stat.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <sys/time.h>
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <dirent.h>
   7 #include <libgen.h>
   8 #include <math.h>
   9
  10 #include "fio.h"
  11 #include "diskutil.h"
  12 #include "lib/ieee754.h"
  13 #include "json.h"
  14 #include "lib/getrusage.h"
  15 #include "idletime.h"
  16 #include "lib/pow2.h"
  17 #include "lib/output_buffer.h"
  18 #include "helper_thread.h"
  19 #include "smalloc.h"
  20
  21 #define LOG_MSEC_SLACK  10
  22
  23 struct fio_mutex *stat_mutex;
  24
  25 void clear_rusage_stat(struct thread_data *td)
  26 {
  27         struct thread_stat *ts = &td->ts;
  28
  29         fio_getrusage(&td->ru_start);
  30         ts->usr_time = ts->sys_time = 0;
  31         ts->ctx = 0;
  32         ts->minf = ts->majf = 0;
  33 }
  34
  35 void update_rusage_stat(struct thread_data *td)
  36 {
  37         struct thread_stat *ts = &td->ts;
  38
  39         fio_getrusage(&td->ru_end);
  40         ts->usr_time += mtime_since_tv(&td->ru_start.ru_utime,
  41                                         &td->ru_end.ru_utime);
  42         ts->sys_time += mtime_since_tv(&td->ru_start.ru_stime,
  43                                         &td->ru_end.ru_stime);
  44         ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
  45                         - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
  46         ts->minf += td->ru_end.ru_minflt - td->ru_start.ru_minflt;
  47         ts->majf += td->ru_end.ru_majflt - td->ru_start.ru_majflt;
  48
  49         memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
  50 }
  51
  52 /*
  53  * Given a latency, return the index of the corresponding bucket in
  54  * the structure tracking percentiles.
  55  *
  56  * (1) find the group (and error bits) that the value (latency)
  57  * belongs to by looking at its MSB. (2) find the bucket number in the
  58  * group by looking at the index bits.
  59  *
  60  */
  61 static unsigned int plat_val_to_idx(unsigned long long val)
  62 {
  63         unsigned int msb, error_bits, base, offset, idx;
  64
  65         /* Find MSB starting from bit 0 */
  66         if (val == 0)
  67                 msb = 0;
  68         else
  69                 msb = (sizeof(val)*8) - __builtin_clzll(val) - 1;
  70
  71         /*
  72          * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
  73          * all bits of the sample as index
  74          */
  75         if (msb <= FIO_IO_U_PLAT_BITS)
  76                 return val;
  77
  78         /* Compute the number of error bits to discard*/
  79         error_bits = msb - FIO_IO_U_PLAT_BITS;
  80
  81         /* Compute the number of buckets before the group */
  82         base = (error_bits + 1) << FIO_IO_U_PLAT_BITS;
  83
  84         /*
  85          * Discard the error bits and apply the mask to find the
  86          * index for the buckets in the group
  87          */
  88         offset = (FIO_IO_U_PLAT_VAL - 1) & (val >> error_bits);
  89
  90         /* Make sure the index does not exceed (array size - 1) */
  91         idx = (base + offset) < (FIO_IO_U_PLAT_NR - 1) ?
  92                 (base + offset) : (FIO_IO_U_PLAT_NR - 1);
  93
  94         return idx;
  95 }
  96
  97 /*
  98  * Convert the given index of the bucket array to the value
  99  * represented by the bucket
 100  */
 101 static unsigned long long plat_idx_to_val(unsigned int idx)
 102 {
 103         unsigned int error_bits;
 104         unsigned long long k, base;
 105
 106         assert(idx < FIO_IO_U_PLAT_NR);
 107
 108         /* MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
 109          * all bits of the sample as index */
 110         if (idx < (FIO_IO_U_PLAT_VAL << 1))
 111                 return idx;
 112
 113         /* Find the group and compute the minimum value of that group */
 114         error_bits = (idx >> FIO_IO_U_PLAT_BITS) - 1;
 115         base = ((unsigned long long) 1) << (error_bits + FIO_IO_U_PLAT_BITS);
 116
 117         /* Find its bucket number of the group */
 118         k = idx % FIO_IO_U_PLAT_VAL;
 119
 120         /* Return the mean of the range of the bucket */
 121         return base + ((k + 0.5) * (1 << error_bits));
 122 }
 123
 124 static int double_cmp(const void *a, const void *b)
 125 {
 126         const fio_fp64_t fa = *(const fio_fp64_t *) a;
 127         const fio_fp64_t fb = *(const fio_fp64_t *) b;
 128         int cmp = 0;
 129
 130         if (fa.u.f > fb.u.f)
 131                 cmp = 1;
 132         else if (fa.u.f < fb.u.f)
 133                 cmp = -1;
 134
 135         return cmp;
 136 }
 137
 138 unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long long nr,
 139                                    fio_fp64_t *plist, unsigned long long **output,
 140                                    unsigned long long *maxv, unsigned long long *minv)
 141 {
 142         unsigned long long sum = 0;
 143         unsigned int len, i, j = 0;
 144         unsigned int oval_len = 0;
 145         unsigned long long *ovals = NULL;
 146         bool is_last;
 147
 148         *minv = -1ULL;
 149         *maxv = 0;
 150
 151         len = 0;
 152         while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
 153                 len++;
 154
 155         if (!len)
 156                 return 0;
 157
 158         /*
 159          * Sort the percentile list. Note that it may already be sorted if
 160          * we are using the default values, but since it's a short list this
 161          * isn't a worry. Also note that this does not work for NaN values.
 162          */
 163         if (len > 1)
 164                 qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
 165
 166         /*
 167          * Calculate bucket values, note down max and min values
 168          */
 169         is_last = false;
 170         for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
 171                 sum += io_u_plat[i];
 172                 while (sum >= (plist[j].u.f / 100.0 * nr)) {
 173                         assert(plist[j].u.f <= 100.0);
 174
 175                         if (j == oval_len) {
 176                                 oval_len += 100;
 177                                 ovals = realloc(ovals, oval_len * sizeof(*ovals));
 178                         }
 179
 180                         ovals[j] = plat_idx_to_val(i);
 181                         if (ovals[j] < *minv)
 182                                 *minv = ovals[j];
 183                         if (ovals[j] > *maxv)
 184                                 *maxv = ovals[j];
 185
 186                         is_last = (j == len - 1) != 0;
 187                         if (is_last)
 188                                 break;
 189
 190                         j++;
 191                 }
 192         }
 193
 194         *output = ovals;
 195         return len;
 196 }
 197
 198 /*
 199  * Find and display the p-th percentile of clat
 200  */
 201 static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long long nr,
 202                                   fio_fp64_t *plist, unsigned int precision,
 203                                   const char *pre, struct buf_output *out)
 204 {
 205         unsigned int divisor, len, i, j = 0;
 206         unsigned long long minv, maxv;
 207         unsigned long long *ovals;
 208         int per_line, scale_down, time_width;
 209         bool is_last;
 210         char fmt[32];
 211
 212         len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
 213         if (!len || !ovals)
 214                 goto out;
 215
 216         /*
 217          * We default to nsecs, but if the value range is such that we
 218          * should scale down to usecs or msecs, do that.
 219          */
 220         if (minv > 2000000 && maxv > 99999999ULL) {
 221                 scale_down = 2;
 222                 divisor = 1000000;
 223                 log_buf(out, "    %s percentiles (msec):\n     |", pre);
 224         } else if (minv > 2000 && maxv > 99999) {
 225                 scale_down = 1;
 226                 divisor = 1000;
 227                 log_buf(out, "    %s percentiles (usec):\n     |", pre);
 228         } else {
 229                 scale_down = 0;
 230                 divisor = 1;
 231                 log_buf(out, "    %s percentiles (nsec):\n     |", pre);
 232         }
 233
 234
 235         time_width = max(5, (int) (log10(maxv / divisor) + 1));
 236         snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3,
 237                         precision, time_width);
 238         /* fmt will be something like " %5.2fth=[%4llu]%c" */
 239         per_line = (80 - 7) / (precision + 10 + time_width);
 240
 241         for (j = 0; j < len; j++) {
 242                 /* for formatting */
 243                 if (j != 0 && (j % per_line) == 0)
 244                         log_buf(out, "     |");
 245
 246                 /* end of the list */
 247                 is_last = (j == len - 1) != 0;
 248
 249                 for (i = 0; i < scale_down; i++)
 250                         ovals[j] = (ovals[j] + 999) / 1000;
 251
 252                 log_buf(out, fmt, plist[j].u.f, ovals[j], is_last ? '\n' : ',');
 253
 254                 if (is_last)
 255                         break;
 256
 257                 if ((j % per_line) == per_line - 1)     /* for formatting */
 258                         log_buf(out, "\n");
 259         }
 260
 261 out:
 262         if (ovals)
 263                 free(ovals);
 264 }
 265
 266 bool calc_lat(struct io_stat *is, unsigned long long *min,
 267               unsigned long long *max, double *mean, double *dev)
 268 {
 269         double n = (double) is->samples;
 270
 271         if (n == 0)
 272                 return false;
 273
 274         *min = is->min_val;
 275         *max = is->max_val;
 276         *mean = is->mean.u.f;
 277
 278         if (n > 1.0)
 279                 *dev = sqrt(is->S.u.f / (n - 1.0));
 280         else
 281                 *dev = 0;
 282
 283         return true;
 284 }
 285
 286 void show_group_stats(struct group_run_stats *rs, struct buf_output *out)
 287 {
 288         char *io, *agg, *min, *max;
 289         char *ioalt, *aggalt, *minalt, *maxalt;
 290         const char *str[] = { "   READ", "  WRITE" , "   TRIM"};
 291         int i;
 292
 293         log_buf(out, "\nRun status group %d (all jobs):\n", rs->groupid);
 294
 295         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 296                 const int i2p = is_power_of_2(rs->kb_base);
 297
 298                 if (!rs->max_run[i])
 299                         continue;
 300
 301                 io = num2str(rs->iobytes[i], rs->sig_figs, 1, i2p, N2S_BYTE);
 302                 ioalt = num2str(rs->iobytes[i], rs->sig_figs, 1, !i2p, N2S_BYTE);
 303                 agg = num2str(rs->agg[i], rs->sig_figs, 1, i2p, rs->unit_base);
 304                 aggalt = num2str(rs->agg[i], rs->sig_figs, 1, !i2p, rs->unit_base);
 305                 min = num2str(rs->min_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
 306                 minalt = num2str(rs->min_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
 307                 max = num2str(rs->max_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
 308                 maxalt = num2str(rs->max_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
 309                 log_buf(out, "%s: bw=%s (%s), %s-%s (%s-%s), io=%s (%s), run=%llu-%llumsec\n",
 310                                 rs->unified_rw_rep ? "  MIXED" : str[i],
 311                                 agg, aggalt, min, max, minalt, maxalt, io, ioalt,
 312                                 (unsigned long long) rs->min_run[i],
 313                                 (unsigned long long) rs->max_run[i]);
 314
 315                 free(io);
 316                 free(agg);
 317                 free(min);
 318                 free(max);
 319                 free(ioalt);
 320                 free(aggalt);
 321                 free(minalt);
 322                 free(maxalt);
 323         }
 324 }
 325
 326 void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
 327 {
 328         int i;
 329
 330         /*
 331          * Do depth distribution calculations
 332          */
 333         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 334                 if (total) {
 335                         io_u_dist[i] = (double) map[i] / (double) total;
 336                         io_u_dist[i] *= 100.0;
 337                         if (io_u_dist[i] < 0.1 && map[i])
 338                                 io_u_dist[i] = 0.1;
 339                 } else
 340                         io_u_dist[i] = 0.0;
 341         }
 342 }
 343
 344 static void stat_calc_lat(struct thread_stat *ts, double *dst,
 345                           unsigned int *src, int nr)
 346 {
 347         unsigned long total = ddir_rw_sum(ts->total_io_u);
 348         int i;
 349
 350         /*
 351          * Do latency distribution calculations
 352          */
 353         for (i = 0; i < nr; i++) {
 354                 if (total) {
 355                         dst[i] = (double) src[i] / (double) total;
 356                         dst[i] *= 100.0;
 357                         if (dst[i] < 0.01 && src[i])
 358                                 dst[i] = 0.01;
 359                 } else
 360                         dst[i] = 0.0;
 361         }
 362 }
 363
 364 /*
 365  * To keep the terse format unaltered, add all of the ns latency
 366  * buckets to the first us latency bucket
 367  */
 368 void stat_calc_lat_nu(struct thread_stat *ts, double *io_u_lat_u)
 369 {
 370         unsigned long ntotal = 0, total = ddir_rw_sum(ts->total_io_u);
 371         int i;
 372
 373         stat_calc_lat(ts, io_u_lat_u, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
 374
 375         for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
 376                 ntotal += ts->io_u_lat_n[i];
 377
 378         io_u_lat_u[0] += 100.0 * (double) ntotal / (double) total;
 379 }
 380
 381 void stat_calc_lat_n(struct thread_stat *ts, double *io_u_lat)
 382 {
 383         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_n, FIO_IO_U_LAT_N_NR);
 384 }
 385
 386 void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 387 {
 388         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
 389 }
 390
 391 void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
 392 {
 393         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 394 }
 395
 396 static void display_lat(const char *name, unsigned long long min,
 397                         unsigned long long max, double mean, double dev,
 398                         struct buf_output *out)
 399 {
 400         const char *base = "(nsec)";
 401         char *minp, *maxp;
 402
 403         if (nsec_to_msec(&min, &max, &mean, &dev))
 404                 base = "(msec)";
 405         else if (nsec_to_usec(&min, &max, &mean, &dev))
 406                 base = "(usec)";
 407
 408         minp = num2str(min, 6, 1, 0, N2S_NONE);
 409         maxp = num2str(max, 6, 1, 0, N2S_NONE);
 410
 411         log_buf(out, "    %s %s: min=%s, max=%s, avg=%5.02f,"
 412                  " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
 413
 414         free(minp);
 415         free(maxp);
 416 }
 417
 418 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
 419                              int ddir, struct buf_output *out)
 420 {
 421         const char *str[] = { " read", "write", " trim", "sync" };
 422         unsigned long runt;
 423         unsigned long long min, max, bw, iops;
 424         double mean, dev;
 425         char *io_p, *bw_p, *bw_p_alt, *iops_p;
 426         int i2p;
 427
 428         if (ddir_sync(ddir)) {
 429                 if (calc_lat(&ts->sync_stat, &min, &max, &mean, &dev)) {
 430                         log_buf(out, "  %s:\n", "fsync/fdatasync/sync_file_range");
 431                         display_lat(str[ddir], min, max, mean, dev, out);
 432                         show_clat_percentiles(ts->io_u_sync_plat,
 433                                                 ts->sync_stat.samples,
 434                                                 ts->percentile_list,
 435                                                 ts->percentile_precision,
 436                                                 str[ddir], out);
 437                 }
 438                 return;
 439         }
 440
 441         assert(ddir_rw(ddir));
 442
 443         if (!ts->runtime[ddir])
 444                 return;
 445
 446         i2p = is_power_of_2(rs->kb_base);
 447         runt = ts->runtime[ddir];
 448
 449         bw = (1000 * ts->io_bytes[ddir]) / runt;
 450         io_p = num2str(ts->io_bytes[ddir], ts->sig_figs, 1, i2p, N2S_BYTE);
 451         bw_p = num2str(bw, ts->sig_figs, 1, i2p, ts->unit_base);
 452         bw_p_alt = num2str(bw, ts->sig_figs, 1, !i2p, ts->unit_base);
 453
 454         iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
 455         iops_p = num2str(iops, ts->sig_figs, 1, 0, N2S_NONE);
 456
 457         log_buf(out, "  %s: IOPS=%s, BW=%s (%s)(%s/%llumsec)\n",
 458                         rs->unified_rw_rep ? "mixed" : str[ddir],
 459                         iops_p, bw_p, bw_p_alt, io_p,
 460                         (unsigned long long) ts->runtime[ddir]);
 461
 462         free(io_p);
 463         free(bw_p);
 464         free(bw_p_alt);
 465         free(iops_p);
 466
 467         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 468                 display_lat("slat", min, max, mean, dev, out);
 469         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 470                 display_lat("clat", min, max, mean, dev, out);
 471         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
 472                 display_lat(" lat", min, max, mean, dev, out);
 473
 474         if (ts->clat_percentiles || ts->lat_percentiles) {
 475                 const char *name = ts->clat_percentiles ? "clat" : " lat";
 476                 uint64_t samples;
 477
 478                 if (ts->clat_percentiles)
 479                         samples = ts->clat_stat[ddir].samples;
 480                 else
 481                         samples = ts->lat_stat[ddir].samples;
 482
 483                 show_clat_percentiles(ts->io_u_plat[ddir],
 484                                         samples,
 485                                         ts->percentile_list,
 486                                         ts->percentile_precision, name, out);
 487         }
 488         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 489                 double p_of_agg = 100.0, fkb_base = (double)rs->kb_base;
 490                 const char *bw_str;
 491
 492                 if ((rs->unit_base == 1) && i2p)
 493                         bw_str = "Kibit";
 494                 else if (rs->unit_base == 1)
 495                         bw_str = "kbit";
 496                 else if (i2p)
 497                         bw_str = "KiB";
 498                 else
 499                         bw_str = "kB";
 500
 501                 if (rs->agg[ddir]) {
 502                         p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024);
 503                         if (p_of_agg > 100.0)
 504                                 p_of_agg = 100.0;
 505                 }
 506
 507                 if (rs->unit_base == 1) {
 508                         min *= 8.0;
 509                         max *= 8.0;
 510                         mean *= 8.0;
 511                         dev *= 8.0;
 512                 }
 513
 514                 if (mean > fkb_base * fkb_base) {
 515                         min /= fkb_base;
 516                         max /= fkb_base;
 517                         mean /= fkb_base;
 518                         dev /= fkb_base;
 519                         bw_str = (rs->unit_base == 1 ? "Mibit" : "MiB");
 520                 }
 521
 522                 log_buf(out, "   bw (%5s/s): min=%5llu, max=%5llu, per=%3.2f%%, "
 523                         "avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
 524                         bw_str, min, max, p_of_agg, mean, dev,
 525                         (&ts->bw_stat[ddir])->samples);
 526         }
 527         if (calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev)) {
 528                 log_buf(out, "   iops        : min=%5llu, max=%5llu, "
 529                         "avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
 530                         min, max, mean, dev, (&ts->iops_stat[ddir])->samples);
 531         }
 532 }
 533
 534 static bool show_lat(double *io_u_lat, int nr, const char **ranges,
 535                      const char *msg, struct buf_output *out)
 536 {
 537         bool new_line = true, shown = false;
 538         int i, line = 0;
 539
 540         for (i = 0; i < nr; i++) {
 541                 if (io_u_lat[i] <= 0.0)
 542                         continue;
 543                 shown = true;
 544                 if (new_line) {
 545                         if (line)
 546                                 log_buf(out, "\n");
 547                         log_buf(out, "  lat (%s)   : ", msg);
 548                         new_line = false;
 549                         line = 0;
 550                 }
 551                 if (line)
 552                         log_buf(out, ", ");
 553                 log_buf(out, "%s%3.2f%%", ranges[i], io_u_lat[i]);
 554                 line++;
 555                 if (line == 5)
 556                         new_line = true;
 557         }
 558
 559         if (shown)
 560                 log_buf(out, "\n");
 561
 562         return true;
 563 }
 564
 565 static void show_lat_n(double *io_u_lat_n, struct buf_output *out)
 566 {
 567         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 568                                  "250=", "500=", "750=", "1000=", };
 569
 570         show_lat(io_u_lat_n, FIO_IO_U_LAT_N_NR, ranges, "nsec", out);
 571 }
 572
 573 static void show_lat_u(double *io_u_lat_u, struct buf_output *out)
 574 {
 575         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 576                                  "250=", "500=", "750=", "1000=", };
 577
 578         show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec", out);
 579 }
 580
 581 static void show_lat_m(double *io_u_lat_m, struct buf_output *out)
 582 {
 583         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 584                                  "250=", "500=", "750=", "1000=", "2000=",
 585                                  ">=2000=", };
 586
 587         show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec", out);
 588 }
 589
 590 static void show_latencies(struct thread_stat *ts, struct buf_output *out)
 591 {
 592         double io_u_lat_n[FIO_IO_U_LAT_N_NR];
 593         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 594         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 595
 596         stat_calc_lat_n(ts, io_u_lat_n);
 597         stat_calc_lat_u(ts, io_u_lat_u);
 598         stat_calc_lat_m(ts, io_u_lat_m);
 599
 600         show_lat_n(io_u_lat_n, out);
 601         show_lat_u(io_u_lat_u, out);
 602         show_lat_m(io_u_lat_m, out);
 603 }
 604
 605 static int block_state_category(int block_state)
 606 {
 607         switch (block_state) {
 608         case BLOCK_STATE_UNINIT:
 609                 return 0;
 610         case BLOCK_STATE_TRIMMED:
 611         case BLOCK_STATE_WRITTEN:
 612                 return 1;
 613         case BLOCK_STATE_WRITE_FAILURE:
 614         case BLOCK_STATE_TRIM_FAILURE:
 615                 return 2;
 616         default:
 617                 /* Silence compile warning on some BSDs and have a return */
 618                 assert(0);
 619                 return -1;
 620         }
 621 }
 622
 623 static int compare_block_infos(const void *bs1, const void *bs2)
 624 {
 625         uint32_t block1 = *(uint32_t *)bs1;
 626         uint32_t block2 = *(uint32_t *)bs2;
 627         int state1 = BLOCK_INFO_STATE(block1);
 628         int state2 = BLOCK_INFO_STATE(block2);
 629         int bscat1 = block_state_category(state1);
 630         int bscat2 = block_state_category(state2);
 631         int cycles1 = BLOCK_INFO_TRIMS(block1);
 632         int cycles2 = BLOCK_INFO_TRIMS(block2);
 633
 634         if (bscat1 < bscat2)
 635                 return -1;
 636         if (bscat1 > bscat2)
 637                 return 1;
 638
 639         if (cycles1 < cycles2)
 640                 return -1;
 641         if (cycles1 > cycles2)
 642                 return 1;
 643
 644         if (state1 < state2)
 645                 return -1;
 646         if (state1 > state2)
 647                 return 1;
 648
 649         assert(block1 == block2);
 650         return 0;
 651 }
 652
 653 static int calc_block_percentiles(int nr_block_infos, uint32_t *block_infos,
 654                                   fio_fp64_t *plist, unsigned int **percentiles,
 655                                   unsigned int *types)
 656 {
 657         int len = 0;
 658         int i, nr_uninit;
 659
 660         qsort(block_infos, nr_block_infos, sizeof(uint32_t), compare_block_infos);
 661
 662         while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
 663                 len++;
 664
 665         if (!len)
 666                 return 0;
 667
 668         /*
 669          * Sort the percentile list. Note that it may already be sorted if
 670          * we are using the default values, but since it's a short list this
 671          * isn't a worry. Also note that this does not work for NaN values.
 672          */
 673         if (len > 1)
 674                 qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
 675
 676         nr_uninit = 0;
 677         /* Start only after the uninit entries end */
 678         for (nr_uninit = 0;
 679              nr_uninit < nr_block_infos
 680                 && BLOCK_INFO_STATE(block_infos[nr_uninit]) == BLOCK_STATE_UNINIT;
 681              nr_uninit ++)
 682                 ;
 683
 684         if (nr_uninit == nr_block_infos)
 685                 return 0;
 686
 687         *percentiles = calloc(len, sizeof(**percentiles));
 688
 689         for (i = 0; i < len; i++) {
 690                 int idx = (plist[i].u.f * (nr_block_infos - nr_uninit) / 100)
 691                                 + nr_uninit;
 692                 (*percentiles)[i] = BLOCK_INFO_TRIMS(block_infos[idx]);
 693         }
 694
 695         memset(types, 0, sizeof(*types) * BLOCK_STATE_COUNT);
 696         for (i = 0; i < nr_block_infos; i++)
 697                 types[BLOCK_INFO_STATE(block_infos[i])]++;
 698
 699         return len;
 700 }
 701
 702 static const char *block_state_names[] = {
 703         [BLOCK_STATE_UNINIT] = "unwritten",
 704         [BLOCK_STATE_TRIMMED] = "trimmed",
 705         [BLOCK_STATE_WRITTEN] = "written",
 706         [BLOCK_STATE_TRIM_FAILURE] = "trim failure",
 707         [BLOCK_STATE_WRITE_FAILURE] = "write failure",
 708 };
 709
 710 static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
 711                              fio_fp64_t *plist, struct buf_output *out)
 712 {
 713         int len, pos, i;
 714         unsigned int *percentiles = NULL;
 715         unsigned int block_state_counts[BLOCK_STATE_COUNT];
 716
 717         len = calc_block_percentiles(nr_block_infos, block_infos, plist,
 718                                      &percentiles, block_state_counts);
 719
 720         log_buf(out, "  block lifetime percentiles :\n   |");
 721         pos = 0;
 722         for (i = 0; i < len; i++) {
 723                 uint32_t block_info = percentiles[i];
 724 #define LINE_LENGTH     75
 725                 char str[LINE_LENGTH];
 726                 int strln = snprintf(str, LINE_LENGTH, " %3.2fth=%u%c",
 727                                      plist[i].u.f, block_info,
 728                                      i == len - 1 ? '\n' : ',');
 729                 assert(strln < LINE_LENGTH);
 730                 if (pos + strln > LINE_LENGTH) {
 731                         pos = 0;
 732                         log_buf(out, "\n   |");
 733                 }
 734                 log_buf(out, "%s", str);
 735                 pos += strln;
 736 #undef LINE_LENGTH
 737         }
 738         if (percentiles)
 739                 free(percentiles);
 740
 741         log_buf(out, "        states               :");
 742         for (i = 0; i < BLOCK_STATE_COUNT; i++)
 743                 log_buf(out, " %s=%u%c",
 744                          block_state_names[i], block_state_counts[i],
 745                          i == BLOCK_STATE_COUNT - 1 ? '\n' : ',');
 746 }
 747
 748 static void show_ss_normal(struct thread_stat *ts, struct buf_output *out)
 749 {
 750         char *p1, *p1alt, *p2;
 751         unsigned long long bw_mean, iops_mean;
 752         const int i2p = is_power_of_2(ts->kb_base);
 753
 754         if (!ts->ss_dur)
 755                 return;
 756
 757         bw_mean = steadystate_bw_mean(ts);
 758         iops_mean = steadystate_iops_mean(ts);
 759
 760         p1 = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, i2p, ts->unit_base);
 761         p1alt = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, !i2p, ts->unit_base);
 762         p2 = num2str(iops_mean, ts->sig_figs, 1, 0, N2S_NONE);
 763
 764         log_buf(out, "  steadystate  : attained=%s, bw=%s (%s), iops=%s, %s%s=%.3f%s\n",
 765                 ts->ss_state & FIO_SS_ATTAINED ? "yes" : "no",
 766                 p1, p1alt, p2,
 767                 ts->ss_state & FIO_SS_IOPS ? "iops" : "bw",
 768                 ts->ss_state & FIO_SS_SLOPE ? " slope": " mean dev",
 769                 ts->ss_criterion.u.f,
 770                 ts->ss_state & FIO_SS_PCT ? "%" : "");
 771
 772         free(p1);
 773         free(p1alt);
 774         free(p2);
 775 }
 776
 777 static void show_thread_status_normal(struct thread_stat *ts,
 778                                       struct group_run_stats *rs,
 779                                       struct buf_output *out)
 780 {
 781         double usr_cpu, sys_cpu;
 782         unsigned long runtime;
 783         double io_u_dist[FIO_IO_U_MAP_NR];
 784         time_t time_p;
 785         char time_buf[32];
 786
 787         if (!ddir_rw_sum(ts->io_bytes) && !ddir_rw_sum(ts->total_io_u))
 788                 return;
 789
 790         memset(time_buf, 0, sizeof(time_buf));
 791
 792         time(&time_p);
 793         os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
 794
 795         if (!ts->error) {
 796                 log_buf(out, "%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
 797                                         ts->name, ts->groupid, ts->members,
 798                                         ts->error, (int) ts->pid, time_buf);
 799         } else {
 800                 log_buf(out, "%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
 801                                         ts->name, ts->groupid, ts->members,
 802                                         ts->error, ts->verror, (int) ts->pid,
 803                                         time_buf);
 804         }
 805
 806         if (strlen(ts->description))
 807                 log_buf(out, "  Description  : [%s]\n", ts->description);
 808
 809         if (ts->io_bytes[DDIR_READ])
 810                 show_ddir_status(rs, ts, DDIR_READ, out);
 811         if (ts->io_bytes[DDIR_WRITE])
 812                 show_ddir_status(rs, ts, DDIR_WRITE, out);
 813         if (ts->io_bytes[DDIR_TRIM])
 814                 show_ddir_status(rs, ts, DDIR_TRIM, out);
 815
 816         show_latencies(ts, out);
 817
 818         if (ts->sync_stat.samples)
 819                 show_ddir_status(rs, ts, DDIR_SYNC, out);
 820
 821         runtime = ts->total_run_time;
 822         if (runtime) {
 823                 double runt = (double) runtime;
 824
 825                 usr_cpu = (double) ts->usr_time * 100 / runt;
 826                 sys_cpu = (double) ts->sys_time * 100 / runt;
 827         } else {
 828                 usr_cpu = 0;
 829                 sys_cpu = 0;
 830         }
 831
 832         log_buf(out, "  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%llu,"
 833                  " majf=%llu, minf=%llu\n", usr_cpu, sys_cpu,
 834                         (unsigned long long) ts->ctx,
 835                         (unsigned long long) ts->majf,
 836                         (unsigned long long) ts->minf);
 837
 838         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
 839         log_buf(out, "  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
 840                  " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 841                                         io_u_dist[1], io_u_dist[2],
 842                                         io_u_dist[3], io_u_dist[4],
 843                                         io_u_dist[5], io_u_dist[6]);
 844
 845         stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
 846         log_buf(out, "     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 847                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 848                                         io_u_dist[1], io_u_dist[2],
 849                                         io_u_dist[3], io_u_dist[4],
 850                                         io_u_dist[5], io_u_dist[6]);
 851         stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
 852         log_buf(out, "     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 853                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 854                                         io_u_dist[1], io_u_dist[2],
 855                                         io_u_dist[3], io_u_dist[4],
 856                                         io_u_dist[5], io_u_dist[6]);
 857         log_buf(out, "     issued rwt: total=%llu,%llu,%llu,"
 858                                  " short=%llu,%llu,%llu,"
 859                                  " dropped=%llu,%llu,%llu\n",
 860                                         (unsigned long long) ts->total_io_u[0],
 861                                         (unsigned long long) ts->total_io_u[1],
 862                                         (unsigned long long) ts->total_io_u[2],
 863                                         (unsigned long long) ts->short_io_u[0],
 864                                         (unsigned long long) ts->short_io_u[1],
 865                                         (unsigned long long) ts->short_io_u[2],
 866                                         (unsigned long long) ts->drop_io_u[0],
 867                                         (unsigned long long) ts->drop_io_u[1],
 868                                         (unsigned long long) ts->drop_io_u[2]);
 869         if (ts->continue_on_error) {
 870                 log_buf(out, "     errors    : total=%llu, first_error=%d/<%s>\n",
 871                                         (unsigned long long)ts->total_err_count,
 872                                         ts->first_error,
 873                                         strerror(ts->first_error));
 874         }
 875         if (ts->latency_depth) {
 876                 log_buf(out, "     latency   : target=%llu, window=%llu, percentile=%.2f%%, depth=%u\n",
 877                                         (unsigned long long)ts->latency_target,
 878                                         (unsigned long long)ts->latency_window,
 879                                         ts->latency_percentile.u.f,
 880                                         ts->latency_depth);
 881         }
 882
 883         if (ts->nr_block_infos)
 884                 show_block_infos(ts->nr_block_infos, ts->block_infos,
 885                                   ts->percentile_list, out);
 886
 887         if (ts->ss_dur)
 888                 show_ss_normal(ts, out);
 889 }
 890
 891 static void show_ddir_status_terse(struct thread_stat *ts,
 892                                    struct group_run_stats *rs, int ddir,
 893                                    int ver, struct buf_output *out)
 894 {
 895         unsigned long long min, max, minv, maxv, bw, iops;
 896         unsigned long long *ovals = NULL;
 897         double mean, dev;
 898         unsigned int len;
 899         int i, bw_stat;
 900
 901         assert(ddir_rw(ddir));
 902
 903         iops = bw = 0;
 904         if (ts->runtime[ddir]) {
 905                 uint64_t runt = ts->runtime[ddir];
 906
 907                 bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024; /* KiB/s */
 908                 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
 909         }
 910
 911         log_buf(out, ";%llu;%llu;%llu;%llu",
 912                 (unsigned long long) ts->io_bytes[ddir] >> 10, bw, iops,
 913                                         (unsigned long long) ts->runtime[ddir]);
 914
 915         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 916                 log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
 917         else
 918                 log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 919
 920         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 921                 log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
 922         else
 923                 log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 924
 925         if (ts->clat_percentiles || ts->lat_percentiles) {
 926                 len = calc_clat_percentiles(ts->io_u_plat[ddir],
 927                                         ts->clat_stat[ddir].samples,
 928                                         ts->percentile_list, &ovals, &maxv,
 929                                         &minv);
 930         } else
 931                 len = 0;
 932
 933         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 934                 if (i >= len) {
 935                         log_buf(out, ";0%%=0");
 936                         continue;
 937                 }
 938                 log_buf(out, ";%f%%=%llu", ts->percentile_list[i].u.f, ovals[i]/1000);
 939         }
 940
 941         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
 942                 log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
 943         else
 944                 log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 945
 946         if (ovals)
 947                 free(ovals);
 948
 949         bw_stat = calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev);
 950         if (bw_stat) {
 951                 double p_of_agg = 100.0;
 952
 953                 if (rs->agg[ddir]) {
 954                         p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024);
 955                         if (p_of_agg > 100.0)
 956                                 p_of_agg = 100.0;
 957                 }
 958
 959                 log_buf(out, ";%llu;%llu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
 960         } else
 961                 log_buf(out, ";%llu;%llu;%f%%;%f;%f", 0ULL, 0ULL, 0.0, 0.0, 0.0);
 962
 963         if (ver == 5) {
 964                 if (bw_stat)
 965                         log_buf(out, ";%" PRIu64, (&ts->bw_stat[ddir])->samples);
 966                 else
 967                         log_buf(out, ";%lu", 0UL);
 968
 969                 if (calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev))
 970                         log_buf(out, ";%llu;%llu;%f;%f;%" PRIu64, min, max,
 971                                 mean, dev, (&ts->iops_stat[ddir])->samples);
 972                 else
 973                         log_buf(out, ";%llu;%llu;%f;%f;%lu", 0ULL, 0ULL, 0.0, 0.0, 0UL);
 974         }
 975 }
 976
 977 static void add_ddir_status_json(struct thread_stat *ts,
 978                 struct group_run_stats *rs, int ddir, struct json_object *parent)
 979 {
 980         unsigned long long min, max, minv, maxv;
 981         unsigned long long bw_bytes, bw;
 982         unsigned long long *ovals = NULL;
 983         double mean, dev, iops;
 984         unsigned int len;
 985         int i;
 986         const char *ddirname[] = { "read", "write", "trim", "sync" };
 987         struct json_object *dir_object, *tmp_object, *percentile_object, *clat_bins_object = NULL;
 988         char buf[120];
 989         double p_of_agg = 100.0;
 990
 991         assert(ddir_rw(ddir) || ddir_sync(ddir));
 992
 993         if (ts->unified_rw_rep && ddir != DDIR_READ)
 994                 return;
 995
 996         dir_object = json_create_object();
 997         json_object_add_value_object(parent,
 998                 ts->unified_rw_rep ? "mixed" : ddirname[ddir], dir_object);
 999
1000         if (ddir_rw(ddir)) {
1001                 bw_bytes = 0;
1002                 bw = 0;
1003                 iops = 0.0;
1004                 if (ts->runtime[ddir]) {
1005                         uint64_t runt = ts->runtime[ddir];
1006
1007                         bw_bytes = ((1000 * ts->io_bytes[ddir]) / runt); /* Bytes/s */
1008                         bw = bw_bytes / 1024; /* KiB/s */
1009                         iops = (1000.0 * (uint64_t) ts->total_io_u[ddir]) / runt;
1010                 }
1011
1012                 json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir]);
1013                 json_object_add_value_int(dir_object, "io_kbytes", ts->io_bytes[ddir] >> 10);
1014                 json_object_add_value_int(dir_object, "bw_bytes", bw_bytes);
1015                 json_object_add_value_int(dir_object, "bw", bw);
1016                 json_object_add_value_float(dir_object, "iops", iops);
1017                 json_object_add_value_int(dir_object, "runtime", ts->runtime[ddir]);
1018                 json_object_add_value_int(dir_object, "total_ios", ts->total_io_u[ddir]);
1019                 json_object_add_value_int(dir_object, "short_ios", ts->short_io_u[ddir]);
1020                 json_object_add_value_int(dir_object, "drop_ios", ts->drop_io_u[ddir]);
1021
1022                 if (!calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
1023                         min = max = 0;
1024                         mean = dev = 0.0;
1025                 }
1026                 tmp_object = json_create_object();
1027                 json_object_add_value_object(dir_object, "slat_ns", tmp_object);
1028                 json_object_add_value_int(tmp_object, "min", min);
1029                 json_object_add_value_int(tmp_object, "max", max);
1030                 json_object_add_value_float(tmp_object, "mean", mean);
1031                 json_object_add_value_float(tmp_object, "stddev", dev);
1032
1033                 if (!calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
1034                         min = max = 0;
1035                         mean = dev = 0.0;
1036                 }
1037                 tmp_object = json_create_object();
1038                 json_object_add_value_object(dir_object, "clat_ns", tmp_object);
1039                 json_object_add_value_int(tmp_object, "min", min);
1040                 json_object_add_value_int(tmp_object, "max", max);
1041                 json_object_add_value_float(tmp_object, "mean", mean);
1042                 json_object_add_value_float(tmp_object, "stddev", dev);
1043         } else {
1044                 if (!calc_lat(&ts->sync_stat, &min, &max, &mean, &dev)) {
1045                         min = max = 0;
1046                         mean = dev = 0.0;
1047                 }
1048
1049                 tmp_object = json_create_object();
1050                 json_object_add_value_object(dir_object, "lat_ns", tmp_object);
1051                 json_object_add_value_int(tmp_object, "min", min);
1052                 json_object_add_value_int(tmp_object, "max", max);
1053                 json_object_add_value_float(tmp_object, "mean", mean);
1054                 json_object_add_value_float(tmp_object, "stddev", dev);
1055         }
1056
1057         if (ts->clat_percentiles || ts->lat_percentiles) {
1058                 if (ddir_rw(ddir)) {
1059                         len = calc_clat_percentiles(ts->io_u_plat[ddir],
1060                                         ts->clat_stat[ddir].samples,
1061                                         ts->percentile_list, &ovals, &maxv,
1062                                         &minv);
1063                 } else {
1064                         len = calc_clat_percentiles(ts->io_u_sync_plat,
1065                                         ts->sync_stat.samples,
1066                                         ts->percentile_list, &ovals, &maxv,
1067                                         &minv);
1068                 }
1069
1070                 if (len > FIO_IO_U_LIST_MAX_LEN)
1071                         len = FIO_IO_U_LIST_MAX_LEN;
1072         } else
1073                 len = 0;
1074
1075         percentile_object = json_create_object();
1076         json_object_add_value_object(tmp_object, "percentile", percentile_object);
1077         for (i = 0; i < len; i++) {
1078                 snprintf(buf, sizeof(buf), "%f", ts->percentile_list[i].u.f);
1079                 json_object_add_value_int(percentile_object, (const char *)buf, ovals[i]);
1080         }
1081
1082         if (output_format & FIO_OUTPUT_JSON_PLUS) {
1083                 clat_bins_object = json_create_object();
1084                 if (ts->clat_percentiles)
1085                         json_object_add_value_object(tmp_object, "bins", clat_bins_object);
1086
1087                 for(i = 0; i < FIO_IO_U_PLAT_NR; i++) {
1088                         if (ddir_rw(ddir)) {
1089                                 if (ts->io_u_plat[ddir][i]) {
1090                                         snprintf(buf, sizeof(buf), "%llu", plat_idx_to_val(i));
1091                                         json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_plat[ddir][i]);
1092                                 }
1093                         } else {
1094                                 if (ts->io_u_sync_plat[i]) {
1095                                         snprintf(buf, sizeof(buf), "%llu", plat_idx_to_val(i));
1096                                         json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_sync_plat[i]);
1097                                 }
1098                         }
1099                 }
1100         }
1101
1102         if (!ddir_rw(ddir))
1103                 return;
1104
1105         if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
1106                 min = max = 0;
1107                 mean = dev = 0.0;
1108         }
1109         tmp_object = json_create_object();
1110         json_object_add_value_object(dir_object, "lat_ns", tmp_object);
1111         json_object_add_value_int(tmp_object, "min", min);
1112         json_object_add_value_int(tmp_object, "max", max);
1113         json_object_add_value_float(tmp_object, "mean", mean);
1114         json_object_add_value_float(tmp_object, "stddev", dev);
1115         if (output_format & FIO_OUTPUT_JSON_PLUS && ts->lat_percentiles)
1116                 json_object_add_value_object(tmp_object, "bins", clat_bins_object);
1117
1118         if (ovals)
1119                 free(ovals);
1120
1121         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
1122                 if (rs->agg[ddir]) {
1123                         p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024);
1124                         if (p_of_agg > 100.0)
1125                                 p_of_agg = 100.0;
1126                 }
1127         } else {
1128                 min = max = 0;
1129                 p_of_agg = mean = dev = 0.0;
1130         }
1131         json_object_add_value_int(dir_object, "bw_min", min);
1132         json_object_add_value_int(dir_object, "bw_max", max);
1133         json_object_add_value_float(dir_object, "bw_agg", p_of_agg);
1134         json_object_add_value_float(dir_object, "bw_mean", mean);
1135         json_object_add_value_float(dir_object, "bw_dev", dev);
1136         json_object_add_value_int(dir_object, "bw_samples",
1137                                 (&ts->bw_stat[ddir])->samples);
1138
1139         if (!calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev)) {
1140                 min = max = 0;
1141                 mean = dev = 0.0;
1142         }
1143         json_object_add_value_int(dir_object, "iops_min", min);
1144         json_object_add_value_int(dir_object, "iops_max", max);
1145         json_object_add_value_float(dir_object, "iops_mean", mean);
1146         json_object_add_value_float(dir_object, "iops_stddev", dev);
1147         json_object_add_value_int(dir_object, "iops_samples",
1148                                 (&ts->iops_stat[ddir])->samples);
1149 }
1150
1151 static void show_thread_status_terse_all(struct thread_stat *ts,
1152                                          struct group_run_stats *rs, int ver,
1153                                          struct buf_output *out)
1154 {
1155         double io_u_dist[FIO_IO_U_MAP_NR];
1156         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
1157         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
1158         double usr_cpu, sys_cpu;
1159         int i;
1160
1161         /* General Info */
1162         if (ver == 2)
1163                 log_buf(out, "2;%s;%d;%d", ts->name, ts->groupid, ts->error);
1164         else
1165                 log_buf(out, "%d;%s;%s;%d;%d", ver, fio_version_string,
1166                         ts->name, ts->groupid, ts->error);
1167
1168         /* Log Read Status */
1169         show_ddir_status_terse(ts, rs, DDIR_READ, ver, out);
1170         /* Log Write Status */
1171         show_ddir_status_terse(ts, rs, DDIR_WRITE, ver, out);
1172         /* Log Trim Status */
1173         if (ver == 2 || ver == 4 || ver == 5)
1174                 show_ddir_status_terse(ts, rs, DDIR_TRIM, ver, out);
1175
1176         /* CPU Usage */
1177         if (ts->total_run_time) {
1178                 double runt = (double) ts->total_run_time;
1179
1180                 usr_cpu = (double) ts->usr_time * 100 / runt;
1181                 sys_cpu = (double) ts->sys_time * 100 / runt;
1182         } else {
1183                 usr_cpu = 0;
1184                 sys_cpu = 0;
1185         }
1186
1187         log_buf(out, ";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
1188                                                 (unsigned long long) ts->ctx,
1189                                                 (unsigned long long) ts->majf,
1190                                                 (unsigned long long) ts->minf);
1191
1192         /* Calc % distribution of IO depths, usecond, msecond latency */
1193         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
1194         stat_calc_lat_nu(ts, io_u_lat_u);
1195         stat_calc_lat_m(ts, io_u_lat_m);
1196
1197         /* Only show fixed 7 I/O depth levels*/
1198         log_buf(out, ";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
1199                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
1200                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
1201
1202         /* Microsecond latency */
1203         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
1204                 log_buf(out, ";%3.2f%%", io_u_lat_u[i]);
1205         /* Millisecond latency */
1206         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
1207                 log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
1208
1209         /* disk util stats, if any */
1210         if (ver >= 3)
1211                 show_disk_util(1, NULL, out);
1212
1213         /* Additional output if continue_on_error set - default off*/
1214         if (ts->continue_on_error)
1215                 log_buf(out, ";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
1216         if (ver == 2)
1217                 log_buf(out, "\n");
1218
1219         /* Additional output if description is set */
1220         if (strlen(ts->description))
1221                 log_buf(out, ";%s", ts->description);
1222
1223         log_buf(out, "\n");
1224 }
1225
1226 static void json_add_job_opts(struct json_object *root, const char *name,
1227                               struct flist_head *opt_list, bool num_jobs)
1228 {
1229         struct json_object *dir_object;
1230         struct flist_head *entry;
1231         struct print_option *p;
1232
1233         if (flist_empty(opt_list))
1234                 return;
1235
1236         dir_object = json_create_object();
1237         json_object_add_value_object(root, name, dir_object);
1238
1239         flist_for_each(entry, opt_list) {
1240                 const char *pos = "";
1241
1242                 p = flist_entry(entry, struct print_option, list);
1243                 if (!num_jobs && !strcmp(p->name, "numjobs"))
1244                         continue;
1245                 if (p->value)
1246                         pos = p->value;
1247                 json_object_add_value_string(dir_object, p->name, pos);
1248         }
1249 }
1250
1251 static struct json_object *show_thread_status_json(struct thread_stat *ts,
1252                                                    struct group_run_stats *rs,
1253                                                    struct flist_head *opt_list)
1254 {
1255         struct json_object *root, *tmp;
1256         struct jobs_eta *je;
1257         double io_u_dist[FIO_IO_U_MAP_NR];
1258         double io_u_lat_n[FIO_IO_U_LAT_N_NR];
1259         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
1260         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
1261         double usr_cpu, sys_cpu;
1262         int i;
1263         size_t size;
1264
1265         root = json_create_object();
1266         json_object_add_value_string(root, "jobname", ts->name);
1267         json_object_add_value_int(root, "groupid", ts->groupid);
1268         json_object_add_value_int(root, "error", ts->error);
1269
1270         /* ETA Info */
1271         je = get_jobs_eta(true, &size);
1272         if (je) {
1273                 json_object_add_value_int(root, "eta", je->eta_sec);
1274                 json_object_add_value_int(root, "elapsed", je->elapsed_sec);
1275         }
1276
1277         if (opt_list)
1278                 json_add_job_opts(root, "job options", opt_list, true);
1279
1280         add_ddir_status_json(ts, rs, DDIR_READ, root);
1281         add_ddir_status_json(ts, rs, DDIR_WRITE, root);
1282         add_ddir_status_json(ts, rs, DDIR_TRIM, root);
1283         add_ddir_status_json(ts, rs, DDIR_SYNC, root);
1284
1285         /* CPU Usage */
1286         if (ts->total_run_time) {
1287                 double runt = (double) ts->total_run_time;
1288
1289                 usr_cpu = (double) ts->usr_time * 100 / runt;
1290                 sys_cpu = (double) ts->sys_time * 100 / runt;
1291         } else {
1292                 usr_cpu = 0;
1293                 sys_cpu = 0;
1294         }
1295         json_object_add_value_float(root, "usr_cpu", usr_cpu);
1296         json_object_add_value_float(root, "sys_cpu", sys_cpu);
1297         json_object_add_value_int(root, "ctx", ts->ctx);
1298         json_object_add_value_int(root, "majf", ts->majf);
1299         json_object_add_value_int(root, "minf", ts->minf);
1300
1301
1302         /* Calc % distribution of IO depths, usecond, msecond latency */
1303         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
1304         stat_calc_lat_n(ts, io_u_lat_n);
1305         stat_calc_lat_u(ts, io_u_lat_u);
1306         stat_calc_lat_m(ts, io_u_lat_m);
1307
1308         tmp = json_create_object();
1309         json_object_add_value_object(root, "iodepth_level", tmp);
1310         /* Only show fixed 7 I/O depth levels*/
1311         for (i = 0; i < 7; i++) {
1312                 char name[20];
1313                 if (i < 6)
1314                         snprintf(name, 20, "%d", 1 << i);
1315                 else
1316                         snprintf(name, 20, ">=%d", 1 << i);
1317                 json_object_add_value_float(tmp, (const char *)name, io_u_dist[i]);
1318         }
1319
1320         /* Nanosecond latency */
1321         tmp = json_create_object();
1322         json_object_add_value_object(root, "latency_ns", tmp);
1323         for (i = 0; i < FIO_IO_U_LAT_N_NR; i++) {
1324                 const char *ranges[] = { "2", "4", "10", "20", "50", "100",
1325                                  "250", "500", "750", "1000", };
1326                 json_object_add_value_float(tmp, ranges[i], io_u_lat_n[i]);
1327         }
1328         /* Microsecond latency */
1329         tmp = json_create_object();
1330         json_object_add_value_object(root, "latency_us", tmp);
1331         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1332                 const char *ranges[] = { "2", "4", "10", "20", "50", "100",
1333                                  "250", "500", "750", "1000", };
1334                 json_object_add_value_float(tmp, ranges[i], io_u_lat_u[i]);
1335         }
1336         /* Millisecond latency */
1337         tmp = json_create_object();
1338         json_object_add_value_object(root, "latency_ms", tmp);
1339         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) {
1340                 const char *ranges[] = { "2", "4", "10", "20", "50", "100",
1341                                  "250", "500", "750", "1000", "2000",
1342                                  ">=2000", };
1343                 json_object_add_value_float(tmp, ranges[i], io_u_lat_m[i]);
1344         }
1345
1346         /* Additional output if continue_on_error set - default off*/
1347         if (ts->continue_on_error) {
1348                 json_object_add_value_int(root, "total_err", ts->total_err_count);
1349                 json_object_add_value_int(root, "first_error", ts->first_error);
1350         }
1351
1352         if (ts->latency_depth) {
1353                 json_object_add_value_int(root, "latency_depth", ts->latency_depth);
1354                 json_object_add_value_int(root, "latency_target", ts->latency_target);
1355                 json_object_add_value_float(root, "latency_percentile", ts->latency_percentile.u.f);
1356                 json_object_add_value_int(root, "latency_window", ts->latency_window);
1357         }
1358
1359         /* Additional output if description is set */
1360         if (strlen(ts->description))
1361                 json_object_add_value_string(root, "desc", ts->description);
1362
1363         if (ts->nr_block_infos) {
1364                 /* Block error histogram and types */
1365                 int len;
1366                 unsigned int *percentiles = NULL;
1367                 unsigned int block_state_counts[BLOCK_STATE_COUNT];
1368
1369                 len = calc_block_percentiles(ts->nr_block_infos, ts->block_infos,
1370                                              ts->percentile_list,
1371                                              &percentiles, block_state_counts);
1372
1373                 if (len) {
1374                         struct json_object *block, *percentile_object, *states;
1375                         int state;
1376                         block = json_create_object();
1377                         json_object_add_value_object(root, "block", block);
1378
1379                         percentile_object = json_create_object();
1380                         json_object_add_value_object(block, "percentiles",
1381                                                      percentile_object);
1382                         for (i = 0; i < len; i++) {
1383                                 char buf[20];
1384                                 snprintf(buf, sizeof(buf), "%f",
1385                                          ts->percentile_list[i].u.f);
1386                                 json_object_add_value_int(percentile_object,
1387                                                           (const char *)buf,
1388                                                           percentiles[i]);
1389                         }
1390
1391                         states = json_create_object();
1392                         json_object_add_value_object(block, "states", states);
1393                         for (state = 0; state < BLOCK_STATE_COUNT; state++) {
1394                                 json_object_add_value_int(states,
1395                                         block_state_names[state],
1396                                         block_state_counts[state]);
1397                         }
1398                         free(percentiles);
1399                 }
1400         }
1401
1402         if (ts->ss_dur) {
1403                 struct json_object *data;
1404                 struct json_array *iops, *bw;
1405                 int i, j, k;
1406                 char ss_buf[64];
1407
1408                 snprintf(ss_buf, sizeof(ss_buf), "%s%s:%f%s",
1409                         ts->ss_state & FIO_SS_IOPS ? "iops" : "bw",
1410                         ts->ss_state & FIO_SS_SLOPE ? "_slope" : "",
1411                         (float) ts->ss_limit.u.f,
1412                         ts->ss_state & FIO_SS_PCT ? "%" : "");
1413
1414                 tmp = json_create_object();
1415                 json_object_add_value_object(root, "steadystate", tmp);
1416                 json_object_add_value_string(tmp, "ss", ss_buf);
1417                 json_object_add_value_int(tmp, "duration", (int)ts->ss_dur);
1418                 json_object_add_value_int(tmp, "attained", (ts->ss_state & FIO_SS_ATTAINED) > 0);
1419
1420                 snprintf(ss_buf, sizeof(ss_buf), "%f%s", (float) ts->ss_criterion.u.f,
1421                         ts->ss_state & FIO_SS_PCT ? "%" : "");
1422                 json_object_add_value_string(tmp, "criterion", ss_buf);
1423                 json_object_add_value_float(tmp, "max_deviation", ts->ss_deviation.u.f);
1424                 json_object_add_value_float(tmp, "slope", ts->ss_slope.u.f);
1425
1426                 data = json_create_object();
1427                 json_object_add_value_object(tmp, "data", data);
1428                 bw = json_create_array();
1429                 iops = json_create_array();
1430
1431                 /*
1432                 ** if ss was attained or the buffer is not full,
1433                 ** ss->head points to the first element in the list.
1434                 ** otherwise it actually points to the second element
1435                 ** in the list
1436                 */
1437                 if ((ts->ss_state & FIO_SS_ATTAINED) || !(ts->ss_state & FIO_SS_BUFFER_FULL))
1438                         j = ts->ss_head;
1439                 else
1440                         j = ts->ss_head == 0 ? ts->ss_dur - 1 : ts->ss_head - 1;
1441                 for (i = 0; i < ts->ss_dur; i++) {
1442                         k = (j + i) % ts->ss_dur;
1443                         json_array_add_value_int(bw, ts->ss_bw_data[k]);
1444                         json_array_add_value_int(iops, ts->ss_iops_data[k]);
1445                 }
1446                 json_object_add_value_int(data, "bw_mean", steadystate_bw_mean(ts));
1447                 json_object_add_value_int(data, "iops_mean", steadystate_iops_mean(ts));
1448                 json_object_add_value_array(data, "iops", iops);
1449                 json_object_add_value_array(data, "bw", bw);
1450         }
1451
1452         return root;
1453 }
1454
1455 static void show_thread_status_terse(struct thread_stat *ts,
1456                                      struct group_run_stats *rs,
1457                                      struct buf_output *out)
1458 {
1459         if (terse_version >= 2 && terse_version <= 5)
1460                 show_thread_status_terse_all(ts, rs, terse_version, out);
1461         else
1462                 log_err("fio: bad terse version!? %d\n", terse_version);
1463 }
1464
1465 struct json_object *show_thread_status(struct thread_stat *ts,
1466                                        struct group_run_stats *rs,
1467                                        struct flist_head *opt_list,
1468                                        struct buf_output *out)
1469 {
1470         struct json_object *ret = NULL;
1471
1472         if (output_format & FIO_OUTPUT_TERSE)
1473                 show_thread_status_terse(ts, rs,  out);
1474         if (output_format & FIO_OUTPUT_JSON)
1475                 ret = show_thread_status_json(ts, rs, opt_list);
1476         if (output_format & FIO_OUTPUT_NORMAL)
1477                 show_thread_status_normal(ts, rs,  out);
1478
1479         return ret;
1480 }
1481
1482 static void sum_stat(struct io_stat *dst, struct io_stat *src, bool first)
1483 {
1484         double mean, S;
1485
1486         if (src->samples == 0)
1487                 return;
1488
1489         dst->min_val = min(dst->min_val, src->min_val);
1490         dst->max_val = max(dst->max_val, src->max_val);
1491
1492         /*
1493          * Compute new mean and S after the merge
1494          * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
1495          *  #Parallel_algorithm>
1496          */
1497         if (first) {
1498                 mean = src->mean.u.f;
1499                 S = src->S.u.f;
1500         } else {
1501                 double delta = src->mean.u.f - dst->mean.u.f;
1502
1503                 mean = ((src->mean.u.f * src->samples) +
1504                         (dst->mean.u.f * dst->samples)) /
1505                         (dst->samples + src->samples);
1506
1507                 S =  src->S.u.f + dst->S.u.f + pow(delta, 2.0) *
1508                         (dst->samples * src->samples) /
1509                         (dst->samples + src->samples);
1510         }
1511
1512         dst->samples += src->samples;
1513         dst->mean.u.f = mean;
1514         dst->S.u.f = S;
1515 }
1516
1517 void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
1518 {
1519         int i;
1520
1521         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1522                 if (dst->max_run[i] < src->max_run[i])
1523                         dst->max_run[i] = src->max_run[i];
1524                 if (dst->min_run[i] && dst->min_run[i] > src->min_run[i])
1525                         dst->min_run[i] = src->min_run[i];
1526                 if (dst->max_bw[i] < src->max_bw[i])
1527                         dst->max_bw[i] = src->max_bw[i];
1528                 if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
1529                         dst->min_bw[i] = src->min_bw[i];
1530
1531                 dst->iobytes[i] += src->iobytes[i];
1532                 dst->agg[i] += src->agg[i];
1533         }
1534
1535         if (!dst->kb_base)
1536                 dst->kb_base = src->kb_base;
1537         if (!dst->unit_base)
1538                 dst->unit_base = src->unit_base;
1539         if (!dst->sig_figs)
1540                 dst->sig_figs = src->sig_figs;
1541 }
1542
1543 void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
1544                       bool first)
1545 {
1546         int l, k;
1547
1548         for (l = 0; l < DDIR_RWDIR_CNT; l++) {
1549                 if (!dst->unified_rw_rep) {
1550                         sum_stat(&dst->clat_stat[l], &src->clat_stat[l], first);
1551                         sum_stat(&dst->slat_stat[l], &src->slat_stat[l], first);
1552                         sum_stat(&dst->lat_stat[l], &src->lat_stat[l], first);
1553                         sum_stat(&dst->bw_stat[l], &src->bw_stat[l], first);
1554                         sum_stat(&dst->iops_stat[l], &src->iops_stat[l], first);
1555
1556                         dst->io_bytes[l] += src->io_bytes[l];
1557
1558                         if (dst->runtime[l] < src->runtime[l])
1559                                 dst->runtime[l] = src->runtime[l];
1560                 } else {
1561                         sum_stat(&dst->clat_stat[0], &src->clat_stat[l], first);
1562                         sum_stat(&dst->slat_stat[0], &src->slat_stat[l], first);
1563                         sum_stat(&dst->lat_stat[0], &src->lat_stat[l], first);
1564                         sum_stat(&dst->bw_stat[0], &src->bw_stat[l], first);
1565                         sum_stat(&dst->iops_stat[0], &src->iops_stat[l], first);
1566
1567                         dst->io_bytes[0] += src->io_bytes[l];
1568
1569                         if (dst->runtime[0] < src->runtime[l])
1570                                 dst->runtime[0] = src->runtime[l];
1571
1572                         /*
1573                          * We're summing to the same destination, so override
1574                          * 'first' after the first iteration of the loop
1575                          */
1576                         first = false;
1577                 }
1578         }
1579
1580         sum_stat(&dst->sync_stat, &src->sync_stat, first);
1581         dst->usr_time += src->usr_time;
1582         dst->sys_time += src->sys_time;
1583         dst->ctx += src->ctx;
1584         dst->majf += src->majf;
1585         dst->minf += src->minf;
1586
1587         for (k = 0; k < FIO_IO_U_MAP_NR; k++) {
1588                 dst->io_u_map[k] += src->io_u_map[k];
1589                 dst->io_u_submit[k] += src->io_u_submit[k];
1590                 dst->io_u_complete[k] += src->io_u_complete[k];
1591         }
1592         for (k = 0; k < FIO_IO_U_LAT_N_NR; k++) {
1593                 dst->io_u_lat_n[k] += src->io_u_lat_n[k];
1594                 dst->io_u_lat_u[k] += src->io_u_lat_u[k];
1595                 dst->io_u_lat_m[k] += src->io_u_lat_m[k];
1596         }
1597         for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
1598                 dst->io_u_sync_plat[k] += src->io_u_sync_plat[k];
1599
1600         for (k = 0; k < DDIR_RWDIR_CNT; k++) {
1601                 if (!dst->unified_rw_rep) {
1602                         dst->total_io_u[k] += src->total_io_u[k];
1603                         dst->short_io_u[k] += src->short_io_u[k];
1604                         dst->drop_io_u[k] += src->drop_io_u[k];
1605                 } else {
1606                         dst->total_io_u[0] += src->total_io_u[k];
1607                         dst->short_io_u[0] += src->short_io_u[k];
1608                         dst->drop_io_u[0] += src->drop_io_u[k];
1609                 }
1610         }
1611
1612         for (k = 0; k < DDIR_RWDIR_CNT; k++) {
1613                 int m;
1614
1615                 for (m = 0; m < FIO_IO_U_PLAT_NR; m++) {
1616                         if (!dst->unified_rw_rep)
1617                                 dst->io_u_plat[k][m] += src->io_u_plat[k][m];
1618                         else
1619                                 dst->io_u_plat[0][m] += src->io_u_plat[k][m];
1620                 }
1621         }
1622
1623         dst->total_run_time += src->total_run_time;
1624         dst->total_submit += src->total_submit;
1625         dst->total_complete += src->total_complete;
1626 }
1627
1628 void init_group_run_stat(struct group_run_stats *gs)
1629 {
1630         int i;
1631         memset(gs, 0, sizeof(*gs));
1632
1633         for (i = 0; i < DDIR_RWDIR_CNT; i++)
1634                 gs->min_bw[i] = gs->min_run[i] = ~0UL;
1635 }
1636
1637 void init_thread_stat(struct thread_stat *ts)
1638 {
1639         int j;
1640
1641         memset(ts, 0, sizeof(*ts));
1642
1643         for (j = 0; j < DDIR_RWDIR_CNT; j++) {
1644                 ts->lat_stat[j].min_val = -1UL;
1645                 ts->clat_stat[j].min_val = -1UL;
1646                 ts->slat_stat[j].min_val = -1UL;
1647                 ts->bw_stat[j].min_val = -1UL;
1648                 ts->iops_stat[j].min_val = -1UL;
1649         }
1650         ts->groupid = -1;
1651 }
1652
1653 void __show_run_stats(void)
1654 {
1655         struct group_run_stats *runstats, *rs;
1656         struct thread_data *td;
1657         struct thread_stat *threadstats, *ts;
1658         int i, j, k, nr_ts, last_ts, idx;
1659         bool kb_base_warned = false;
1660         bool unit_base_warned = false;
1661         struct json_object *root = NULL;
1662         struct json_array *array = NULL;
1663         struct buf_output output[FIO_OUTPUT_NR];
1664         struct flist_head **opt_lists;
1665
1666         runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
1667
1668         for (i = 0; i < groupid + 1; i++)
1669                 init_group_run_stat(&runstats[i]);
1670
1671         /*
1672          * find out how many threads stats we need. if group reporting isn't
1673          * enabled, it's one-per-td.
1674          */
1675         nr_ts = 0;
1676         last_ts = -1;
1677         for_each_td(td, i) {
1678                 if (!td->o.group_reporting) {
1679                         nr_ts++;
1680                         continue;
1681                 }
1682                 if (last_ts == td->groupid)
1683                         continue;
1684                 if (!td->o.stats)
1685                         continue;
1686
1687                 last_ts = td->groupid;
1688                 nr_ts++;
1689         }
1690
1691         threadstats = malloc(nr_ts * sizeof(struct thread_stat));
1692         opt_lists = malloc(nr_ts * sizeof(struct flist_head *));
1693
1694         for (i = 0; i < nr_ts; i++) {
1695                 init_thread_stat(&threadstats[i]);
1696                 opt_lists[i] = NULL;
1697         }
1698
1699         j = 0;
1700         last_ts = -1;
1701         idx = 0;
1702         for_each_td(td, i) {
1703                 if (!td->o.stats)
1704                         continue;
1705                 if (idx && (!td->o.group_reporting ||
1706                     (td->o.group_reporting && last_ts != td->groupid))) {
1707                         idx = 0;
1708                         j++;
1709                 }
1710
1711                 last_ts = td->groupid;
1712
1713                 ts = &threadstats[j];
1714
1715                 ts->clat_percentiles = td->o.clat_percentiles;
1716                 ts->lat_percentiles = td->o.lat_percentiles;
1717                 ts->percentile_precision = td->o.percentile_precision;
1718                 memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
1719                 opt_lists[j] = &td->opt_list;
1720
1721                 idx++;
1722                 ts->members++;
1723
1724                 if (ts->groupid == -1) {
1725                         /*
1726                          * These are per-group shared already
1727                          */
1728                         strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE - 1);
1729                         if (td->o.description)
1730                                 strncpy(ts->description, td->o.description,
1731                                                 FIO_JOBDESC_SIZE - 1);
1732                         else
1733                                 memset(ts->description, 0, FIO_JOBDESC_SIZE);
1734
1735                         /*
1736                          * If multiple entries in this group, this is
1737                          * the first member.
1738                          */
1739                         ts->thread_number = td->thread_number;
1740                         ts->groupid = td->groupid;
1741
1742                         /*
1743                          * first pid in group, not very useful...
1744                          */
1745                         ts->pid = td->pid;
1746
1747                         ts->kb_base = td->o.kb_base;
1748                         ts->unit_base = td->o.unit_base;
1749                         ts->sig_figs = td->o.sig_figs;
1750                         ts->unified_rw_rep = td->o.unified_rw_rep;
1751                 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
1752                         log_info("fio: kb_base differs for jobs in group, using"
1753                                  " %u as the base\n", ts->kb_base);
1754                         kb_base_warned = true;
1755                 } else if (ts->unit_base != td->o.unit_base && !unit_base_warned) {
1756                         log_info("fio: unit_base differs for jobs in group, using"
1757                                  " %u as the base\n", ts->unit_base);
1758                         unit_base_warned = true;
1759                 }
1760
1761                 ts->continue_on_error = td->o.continue_on_error;
1762                 ts->total_err_count += td->total_err_count;
1763                 ts->first_error = td->first_error;
1764                 if (!ts->error) {
1765                         if (!td->error && td->o.continue_on_error &&
1766                             td->first_error) {
1767                                 ts->error = td->first_error;
1768                                 ts->verror[sizeof(ts->verror) - 1] = '\0';
1769                                 strncpy(ts->verror, td->verror, sizeof(ts->verror) - 1);
1770                         } else  if (td->error) {
1771                                 ts->error = td->error;
1772                                 ts->verror[sizeof(ts->verror) - 1] = '\0';
1773                                 strncpy(ts->verror, td->verror, sizeof(ts->verror) - 1);
1774                         }
1775                 }
1776
1777                 ts->latency_depth = td->latency_qd;
1778                 ts->latency_target = td->o.latency_target;
1779                 ts->latency_percentile = td->o.latency_percentile;
1780                 ts->latency_window = td->o.latency_window;
1781
1782                 ts->nr_block_infos = td->ts.nr_block_infos;
1783                 for (k = 0; k < ts->nr_block_infos; k++)
1784                         ts->block_infos[k] = td->ts.block_infos[k];
1785
1786                 sum_thread_stats(ts, &td->ts, idx == 1);
1787
1788                 if (td->o.ss_dur) {
1789                         ts->ss_state = td->ss.state;
1790                         ts->ss_dur = td->ss.dur;
1791                         ts->ss_head = td->ss.head;
1792                         ts->ss_bw_data = td->ss.bw_data;
1793                         ts->ss_iops_data = td->ss.iops_data;
1794                         ts->ss_limit.u.f = td->ss.limit;
1795                         ts->ss_slope.u.f = td->ss.slope;
1796                         ts->ss_deviation.u.f = td->ss.deviation;
1797                         ts->ss_criterion.u.f = td->ss.criterion;
1798                 }
1799                 else
1800                         ts->ss_dur = ts->ss_state = 0;
1801         }
1802
1803         for (i = 0; i < nr_ts; i++) {
1804                 unsigned long long bw;
1805
1806                 ts = &threadstats[i];
1807                 if (ts->groupid == -1)
1808                         continue;
1809                 rs = &runstats[ts->groupid];
1810                 rs->kb_base = ts->kb_base;
1811                 rs->unit_base = ts->unit_base;
1812                 rs->sig_figs = ts->sig_figs;
1813                 rs->unified_rw_rep += ts->unified_rw_rep;
1814
1815                 for (j = 0; j < DDIR_RWDIR_CNT; j++) {
1816                         if (!ts->runtime[j])
1817                                 continue;
1818                         if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
1819                                 rs->min_run[j] = ts->runtime[j];
1820                         if (ts->runtime[j] > rs->max_run[j])
1821                                 rs->max_run[j] = ts->runtime[j];
1822
1823                         bw = 0;
1824                         if (ts->runtime[j])
1825                                 bw = ts->io_bytes[j] * 1000 / ts->runtime[j];
1826                         if (bw < rs->min_bw[j])
1827                                 rs->min_bw[j] = bw;
1828                         if (bw > rs->max_bw[j])
1829                                 rs->max_bw[j] = bw;
1830
1831                         rs->iobytes[j] += ts->io_bytes[j];
1832                 }
1833         }
1834
1835         for (i = 0; i < groupid + 1; i++) {
1836                 int ddir;
1837
1838                 rs = &runstats[i];
1839
1840                 for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
1841                         if (rs->max_run[ddir])
1842                                 rs->agg[ddir] = (rs->iobytes[ddir] * 1000) /
1843                                                 rs->max_run[ddir];
1844                 }
1845         }
1846
1847         for (i = 0; i < FIO_OUTPUT_NR; i++)
1848                 buf_output_init(&output[i]);
1849
1850         /*
1851          * don't overwrite last signal output
1852          */
1853         if (output_format & FIO_OUTPUT_NORMAL)
1854                 log_buf(&output[__FIO_OUTPUT_NORMAL], "\n");
1855         if (output_format & FIO_OUTPUT_JSON) {
1856                 struct thread_data *global;
1857                 char time_buf[32];
1858                 struct timeval now;
1859                 unsigned long long ms_since_epoch;
1860
1861                 gettimeofday(&now, NULL);
1862                 ms_since_epoch = (unsigned long long)(now.tv_sec) * 1000 +
1863                                  (unsigned long long)(now.tv_usec) / 1000;
1864
1865                 os_ctime_r((const time_t *) &now.tv_sec, time_buf,
1866                                 sizeof(time_buf));
1867                 if (time_buf[strlen(time_buf) - 1] == '\n')
1868                         time_buf[strlen(time_buf) - 1] = '\0';
1869
1870                 root = json_create_object();
1871                 json_object_add_value_string(root, "fio version", fio_version_string);
1872                 json_object_add_value_int(root, "timestamp", now.tv_sec);
1873                 json_object_add_value_int(root, "timestamp_ms", ms_since_epoch);
1874                 json_object_add_value_string(root, "time", time_buf);
1875                 global = get_global_options();
1876                 json_add_job_opts(root, "global options", &global->opt_list, false);
1877                 array = json_create_array();
1878                 json_object_add_value_array(root, "jobs", array);
1879         }
1880
1881         if (is_backend)
1882                 fio_server_send_job_options(&get_global_options()->opt_list, -1U);
1883
1884         for (i = 0; i < nr_ts; i++) {
1885                 ts = &threadstats[i];
1886                 rs = &runstats[ts->groupid];
1887
1888                 if (is_backend) {
1889                         fio_server_send_job_options(opt_lists[i], i);
1890                         fio_server_send_ts(ts, rs);
1891                 } else {
1892                         if (output_format & FIO_OUTPUT_TERSE)
1893                                 show_thread_status_terse(ts, rs, &output[__FIO_OUTPUT_TERSE]);
1894                         if (output_format & FIO_OUTPUT_JSON) {
1895                                 struct json_object *tmp = show_thread_status_json(ts, rs, opt_lists[i]);
1896                                 json_array_add_value_object(array, tmp);
1897                         }
1898                         if (output_format & FIO_OUTPUT_NORMAL)
1899                                 show_thread_status_normal(ts, rs, &output[__FIO_OUTPUT_NORMAL]);
1900                 }
1901         }
1902         if (!is_backend && (output_format & FIO_OUTPUT_JSON)) {
1903                 /* disk util stats, if any */
1904                 show_disk_util(1, root, &output[__FIO_OUTPUT_JSON]);
1905
1906                 show_idle_prof_stats(FIO_OUTPUT_JSON, root, &output[__FIO_OUTPUT_JSON]);
1907
1908                 json_print_object(root, &output[__FIO_OUTPUT_JSON]);
1909                 log_buf(&output[__FIO_OUTPUT_JSON], "\n");
1910                 json_free_object(root);
1911         }
1912
1913         for (i = 0; i < groupid + 1; i++) {
1914                 rs = &runstats[i];
1915
1916                 rs->groupid = i;
1917                 if (is_backend)
1918                         fio_server_send_gs(rs);
1919                 else if (output_format & FIO_OUTPUT_NORMAL)
1920                         show_group_stats(rs, &output[__FIO_OUTPUT_NORMAL]);
1921         }
1922
1923         if (is_backend)
1924                 fio_server_send_du();
1925         else if (output_format & FIO_OUTPUT_NORMAL) {
1926                 show_disk_util(0, NULL, &output[__FIO_OUTPUT_NORMAL]);
1927                 show_idle_prof_stats(FIO_OUTPUT_NORMAL, NULL, &output[__FIO_OUTPUT_NORMAL]);
1928         }
1929
1930         for (i = 0; i < FIO_OUTPUT_NR; i++) {
1931                 struct buf_output *out = &output[i];
1932
1933                 log_info_buf(out->buf, out->buflen);
1934                 buf_output_free(out);
1935         }
1936
1937         log_info_flush();
1938         free(runstats);
1939         free(threadstats);
1940         free(opt_lists);
1941 }
1942
1943 void show_run_stats(void)
1944 {
1945         fio_mutex_down(stat_mutex);
1946         __show_run_stats();
1947         fio_mutex_up(stat_mutex);
1948 }
1949
1950 void __show_running_run_stats(void)
1951 {
1952         struct thread_data *td;
1953         unsigned long long *rt;
1954         struct timespec ts;
1955         int i;
1956
1957         fio_mutex_down(stat_mutex);
1958
1959         rt = malloc(thread_number * sizeof(unsigned long long));
1960         fio_gettime(&ts, NULL);
1961
1962         for_each_td(td, i) {
1963                 td->update_rusage = 1;
1964                 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1965                 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1966                 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1967                 td->ts.total_run_time = mtime_since(&td->epoch, &ts);
1968
1969                 rt[i] = mtime_since(&td->start, &ts);
1970                 if (td_read(td) && td->ts.io_bytes[DDIR_READ])
1971                         td->ts.runtime[DDIR_READ] += rt[i];
1972                 if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
1973                         td->ts.runtime[DDIR_WRITE] += rt[i];
1974                 if (td_trim(td) && td->ts.io_bytes[DDIR_TRIM])
1975                         td->ts.runtime[DDIR_TRIM] += rt[i];
1976         }
1977
1978         for_each_td(td, i) {
1979                 if (td->runstate >= TD_EXITED)
1980                         continue;
1981                 if (td->rusage_sem) {
1982                         td->update_rusage = 1;
1983                         fio_mutex_down(td->rusage_sem);
1984                 }
1985                 td->update_rusage = 0;
1986         }
1987
1988         __show_run_stats();
1989
1990         for_each_td(td, i) {
1991                 if (td_read(td) && td->ts.io_bytes[DDIR_READ])
1992                         td->ts.runtime[DDIR_READ] -= rt[i];
1993                 if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
1994                         td->ts.runtime[DDIR_WRITE] -= rt[i];
1995                 if (td_trim(td) && td->ts.io_bytes[DDIR_TRIM])
1996                         td->ts.runtime[DDIR_TRIM] -= rt[i];
1997         }
1998
1999         free(rt);
2000         fio_mutex_up(stat_mutex);
2001 }
2002
2003 static bool status_interval_init;
2004 static struct timespec status_time;
2005 static bool status_file_disabled;
2006
2007 #define FIO_STATUS_FILE         "fio-dump-status"
2008
2009 static int check_status_file(void)
2010 {
2011         struct stat sb;
2012         const char *temp_dir;
2013         char fio_status_file_path[PATH_MAX];
2014
2015         if (status_file_disabled)
2016                 return 0;
2017
2018         temp_dir = getenv("TMPDIR");
2019         if (temp_dir == NULL) {
2020                 temp_dir = getenv("TEMP");
2021                 if (temp_dir && strlen(temp_dir) >= PATH_MAX)
2022                         temp_dir = NULL;
2023         }
2024         if (temp_dir == NULL)
2025                 temp_dir = "/tmp";
2026
2027         snprintf(fio_status_file_path, sizeof(fio_status_file_path), "%s/%s", temp_dir, FIO_STATUS_FILE);
2028
2029         if (stat(fio_status_file_path, &sb))
2030                 return 0;
2031
2032         if (unlink(fio_status_file_path) < 0) {
2033                 log_err("fio: failed to unlink %s: %s\n", fio_status_file_path,
2034                                                         strerror(errno));
2035                 log_err("fio: disabling status file updates\n");
2036                 status_file_disabled = true;
2037         }
2038
2039         return 1;
2040 }
2041
2042 void check_for_running_stats(void)
2043 {
2044         if (status_interval) {
2045                 if (!status_interval_init) {
2046                         fio_gettime(&status_time, NULL);
2047                         status_interval_init = true;
2048                 } else if (mtime_since_now(&status_time) >= status_interval) {
2049                         show_running_run_stats();
2050                         fio_gettime(&status_time, NULL);
2051                         return;
2052                 }
2053         }
2054         if (check_status_file()) {
2055                 show_running_run_stats();
2056                 return;
2057         }
2058 }
2059
2060 static inline void add_stat_sample(struct io_stat *is, unsigned long long data)
2061 {
2062         double val = data;
2063         double delta;
2064
2065         if (data > is->max_val)
2066                 is->max_val = data;
2067         if (data < is->min_val)
2068                 is->min_val = data;
2069
2070         delta = val - is->mean.u.f;
2071         if (delta) {
2072                 is->mean.u.f += delta / (is->samples + 1.0);
2073                 is->S.u.f += delta * (val - is->mean.u.f);
2074         }
2075
2076         is->samples++;
2077 }
2078
2079 /*
2080  * Return a struct io_logs, which is added to the tail of the log
2081  * list for 'iolog'.
2082  */
2083 static struct io_logs *get_new_log(struct io_log *iolog)
2084 {
2085         size_t new_size, new_samples;
2086         struct io_logs *cur_log;
2087
2088         /*
2089          * Cap the size at MAX_LOG_ENTRIES, so we don't keep doubling
2090          * forever
2091          */
2092         if (!iolog->cur_log_max)
2093                 new_samples = DEF_LOG_ENTRIES;
2094         else {
2095                 new_samples = iolog->cur_log_max * 2;
2096                 if (new_samples > MAX_LOG_ENTRIES)
2097                         new_samples = MAX_LOG_ENTRIES;
2098         }
2099
2100         new_size = new_samples * log_entry_sz(iolog);
2101
2102         cur_log = smalloc(sizeof(*cur_log));
2103         if (cur_log) {
2104                 INIT_FLIST_HEAD(&cur_log->list);
2105                 cur_log->log = malloc(new_size);
2106                 if (cur_log->log) {
2107                         cur_log->nr_samples = 0;
2108                         cur_log->max_samples = new_samples;
2109                         flist_add_tail(&cur_log->list, &iolog->io_logs);
2110                         iolog->cur_log_max = new_samples;
2111                         return cur_log;
2112                 }
2113                 sfree(cur_log);
2114         }
2115
2116         return NULL;
2117 }
2118
2119 /*
2120  * Add and return a new log chunk, or return current log if big enough
2121  */
2122 static struct io_logs *regrow_log(struct io_log *iolog)
2123 {
2124         struct io_logs *cur_log;
2125         int i;
2126
2127         if (!iolog || iolog->disabled)
2128                 goto disable;
2129
2130         cur_log = iolog_cur_log(iolog);
2131         if (!cur_log) {
2132                 cur_log = get_new_log(iolog);
2133                 if (!cur_log)
2134                         return NULL;
2135         }
2136
2137         if (cur_log->nr_samples < cur_log->max_samples)
2138                 return cur_log;
2139
2140         /*
2141          * No room for a new sample. If we're compressing on the fly, flush
2142          * out the current chunk
2143          */
2144         if (iolog->log_gz) {
2145                 if (iolog_cur_flush(iolog, cur_log)) {
2146                         log_err("fio: failed flushing iolog! Will stop logging.\n");
2147                         return NULL;
2148                 }
2149         }
2150
2151         /*
2152          * Get a new log array, and add to our list
2153          */
2154         cur_log = get_new_log(iolog);
2155         if (!cur_log) {
2156                 log_err("fio: failed extending iolog! Will stop logging.\n");
2157                 return NULL;
2158         }
2159
2160         if (!iolog->pending || !iolog->pending->nr_samples)
2161                 return cur_log;
2162
2163         /*
2164          * Flush pending items to new log
2165          */
2166         for (i = 0; i < iolog->pending->nr_samples; i++) {
2167                 struct io_sample *src, *dst;
2168
2169                 src = get_sample(iolog, iolog->pending, i);
2170                 dst = get_sample(iolog, cur_log, i);
2171                 memcpy(dst, src, log_entry_sz(iolog));
2172         }
2173         cur_log->nr_samples = iolog->pending->nr_samples;
2174
2175         iolog->pending->nr_samples = 0;
2176         return cur_log;
2177 disable:
2178         if (iolog)
2179                 iolog->disabled = true;
2180         return NULL;
2181 }
2182
2183 void regrow_logs(struct thread_data *td)
2184 {
2185         regrow_log(td->slat_log);
2186         regrow_log(td->clat_log);
2187         regrow_log(td->clat_hist_log);
2188         regrow_log(td->lat_log);
2189         regrow_log(td->bw_log);
2190         regrow_log(td->iops_log);
2191         td->flags &= ~TD_F_REGROW_LOGS;
2192 }
2193
2194 static struct io_logs *get_cur_log(struct io_log *iolog)
2195 {
2196         struct io_logs *cur_log;
2197
2198         cur_log = iolog_cur_log(iolog);
2199         if (!cur_log) {
2200                 cur_log = get_new_log(iolog);
2201                 if (!cur_log)
2202                         return NULL;
2203         }
2204
2205         if (cur_log->nr_samples < cur_log->max_samples)
2206                 return cur_log;
2207
2208         /*
2209          * Out of space. If we're in IO offload mode, or we're not doing
2210          * per unit logging (hence logging happens outside of the IO thread
2211          * as well), add a new log chunk inline. If we're doing inline
2212          * submissions, flag 'td' as needing a log regrow and we'll take
2213          * care of it on the submission side.
2214          */
2215         if (iolog->td->o.io_submit_mode == IO_MODE_OFFLOAD ||
2216             !per_unit_log(iolog))
2217                 return regrow_log(iolog);
2218
2219         iolog->td->flags |= TD_F_REGROW_LOGS;
2220         assert(iolog->pending->nr_samples < iolog->pending->max_samples);
2221         return iolog->pending;
2222 }
2223
2224 static void __add_log_sample(struct io_log *iolog, union io_sample_data data,
2225                              enum fio_ddir ddir, unsigned int bs,
2226                              unsigned long t, uint64_t offset)
2227 {
2228         struct io_logs *cur_log;
2229
2230         if (iolog->disabled)
2231                 return;
2232         if (flist_empty(&iolog->io_logs))
2233                 iolog->avg_last[ddir] = t;
2234
2235         cur_log = get_cur_log(iolog);
2236         if (cur_log) {
2237                 struct io_sample *s;
2238
2239                 s = get_sample(iolog, cur_log, cur_log->nr_samples);
2240
2241                 s->data = data;
2242                 s->time = t + (iolog->td ? iolog->td->unix_epoch : 0);
2243                 io_sample_set_ddir(iolog, s, ddir);
2244                 s->bs = bs;
2245
2246                 if (iolog->log_offset) {
2247                         struct io_sample_offset *so = (void *) s;
2248
2249                         so->offset = offset;
2250                 }
2251
2252                 cur_log->nr_samples++;
2253                 return;
2254         }
2255
2256         iolog->disabled = true;
2257 }
2258
2259 static inline void reset_io_stat(struct io_stat *ios)
2260 {
2261         ios->max_val = ios->min_val = ios->samples = 0;
2262         ios->mean.u.f = ios->S.u.f = 0;
2263 }
2264
2265 void reset_io_stats(struct thread_data *td)
2266 {
2267         struct thread_stat *ts = &td->ts;
2268         int i, j;
2269
2270         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2271                 reset_io_stat(&ts->clat_stat[i]);
2272                 reset_io_stat(&ts->slat_stat[i]);
2273                 reset_io_stat(&ts->lat_stat[i]);
2274                 reset_io_stat(&ts->bw_stat[i]);
2275                 reset_io_stat(&ts->iops_stat[i]);
2276
2277                 ts->io_bytes[i] = 0;
2278                 ts->runtime[i] = 0;
2279                 ts->total_io_u[i] = 0;
2280                 ts->short_io_u[i] = 0;
2281                 ts->drop_io_u[i] = 0;
2282
2283                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) {
2284                         ts->io_u_plat[i][j] = 0;
2285                         if (!i)
2286                                 ts->io_u_sync_plat[j] = 0;
2287                 }
2288         }
2289
2290         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
2291                 ts->io_u_map[i] = 0;
2292                 ts->io_u_submit[i] = 0;
2293                 ts->io_u_complete[i] = 0;
2294         }
2295
2296         for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
2297                 ts->io_u_lat_n[i] = 0;
2298         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
2299                 ts->io_u_lat_u[i] = 0;
2300         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
2301                 ts->io_u_lat_m[i] = 0;
2302
2303         ts->total_submit = 0;
2304         ts->total_complete = 0;
2305 }
2306
2307 static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
2308                               unsigned long elapsed, bool log_max)
2309 {
2310         /*
2311          * Note an entry in the log. Use the mean from the logged samples,
2312          * making sure to properly round up. Only write a log entry if we
2313          * had actual samples done.
2314          */
2315         if (iolog->avg_window[ddir].samples) {
2316                 union io_sample_data data;
2317
2318                 if (log_max)
2319                         data.val = iolog->avg_window[ddir].max_val;
2320                 else
2321                         data.val = iolog->avg_window[ddir].mean.u.f + 0.50;
2322
2323                 __add_log_sample(iolog, data, ddir, 0, elapsed, 0);
2324         }
2325
2326         reset_io_stat(&iolog->avg_window[ddir]);
2327 }
2328
2329 static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed,
2330                              bool log_max)
2331 {
2332         int ddir;
2333
2334         for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
2335                 __add_stat_to_log(iolog, ddir, elapsed, log_max);
2336 }
2337
2338 static long add_log_sample(struct thread_data *td, struct io_log *iolog,
2339                            union io_sample_data data, enum fio_ddir ddir,
2340                            unsigned int bs, uint64_t offset)
2341 {
2342         unsigned long elapsed, this_window;
2343
2344         if (!ddir_rw(ddir))
2345                 return 0;
2346
2347         elapsed = mtime_since_now(&td->epoch);
2348
2349         /*
2350          * If no time averaging, just add the log sample.
2351          */
2352         if (!iolog->avg_msec) {
2353                 __add_log_sample(iolog, data, ddir, bs, elapsed, offset);
2354                 return 0;
2355         }
2356
2357         /*
2358          * Add the sample. If the time period has passed, then
2359          * add that entry to the log and clear.
2360          */
2361         add_stat_sample(&iolog->avg_window[ddir], data.val);
2362
2363         /*
2364          * If period hasn't passed, adding the above sample is all we
2365          * need to do.
2366          */
2367         this_window = elapsed - iolog->avg_last[ddir];
2368         if (elapsed < iolog->avg_last[ddir])
2369                 return iolog->avg_last[ddir] - elapsed;
2370         else if (this_window < iolog->avg_msec) {
2371                 int diff = iolog->avg_msec - this_window;
2372
2373                 if (inline_log(iolog) || diff > LOG_MSEC_SLACK)
2374                         return diff;
2375         }
2376
2377         __add_stat_to_log(iolog, ddir, elapsed, td->o.log_max != 0);
2378
2379         iolog->avg_last[ddir] = elapsed - (this_window - iolog->avg_msec);
2380         return iolog->avg_msec;
2381 }
2382
2383 void finalize_logs(struct thread_data *td, bool unit_logs)
2384 {
2385         unsigned long elapsed;
2386
2387         elapsed = mtime_since_now(&td->epoch);
2388
2389         if (td->clat_log && unit_logs)
2390                 _add_stat_to_log(td->clat_log, elapsed, td->o.log_max != 0);
2391         if (td->slat_log && unit_logs)
2392                 _add_stat_to_log(td->slat_log, elapsed, td->o.log_max != 0);
2393         if (td->lat_log && unit_logs)
2394                 _add_stat_to_log(td->lat_log, elapsed, td->o.log_max != 0);
2395         if (td->bw_log && (unit_logs == per_unit_log(td->bw_log)))
2396                 _add_stat_to_log(td->bw_log, elapsed, td->o.log_max != 0);
2397         if (td->iops_log && (unit_logs == per_unit_log(td->iops_log)))
2398                 _add_stat_to_log(td->iops_log, elapsed, td->o.log_max != 0);
2399 }
2400
2401 void add_agg_sample(union io_sample_data data, enum fio_ddir ddir, unsigned int bs)
2402 {
2403         struct io_log *iolog;
2404
2405         if (!ddir_rw(ddir))
2406                 return;
2407
2408         iolog = agg_io_log[ddir];
2409         __add_log_sample(iolog, data, ddir, bs, mtime_since_genesis(), 0);
2410 }
2411
2412 void add_sync_clat_sample(struct thread_stat *ts, unsigned long long nsec)
2413 {
2414         unsigned int idx = plat_val_to_idx(nsec);
2415         assert(idx < FIO_IO_U_PLAT_NR);
2416
2417         ts->io_u_sync_plat[idx]++;
2418         add_stat_sample(&ts->sync_stat, nsec);
2419 }
2420
2421 static void add_clat_percentile_sample(struct thread_stat *ts,
2422                                 unsigned long long nsec, enum fio_ddir ddir)
2423 {
2424         unsigned int idx = plat_val_to_idx(nsec);
2425         assert(idx < FIO_IO_U_PLAT_NR);
2426
2427         ts->io_u_plat[ddir][idx]++;
2428 }
2429
2430 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
2431                      unsigned long long nsec, unsigned int bs, uint64_t offset)
2432 {
2433         unsigned long elapsed, this_window;
2434         struct thread_stat *ts = &td->ts;
2435         struct io_log *iolog = td->clat_hist_log;
2436
2437         td_io_u_lock(td);
2438
2439         add_stat_sample(&ts->clat_stat[ddir], nsec);
2440
2441         if (td->clat_log)
2442                 add_log_sample(td, td->clat_log, sample_val(nsec), ddir, bs,
2443                                offset);
2444
2445         if (ts->clat_percentiles)
2446                 add_clat_percentile_sample(ts, nsec, ddir);
2447
2448         if (iolog && iolog->hist_msec) {
2449                 struct io_hist *hw = &iolog->hist_window[ddir];
2450
2451                 hw->samples++;
2452                 elapsed = mtime_since_now(&td->epoch);
2453                 if (!hw->hist_last)
2454                         hw->hist_last = elapsed;
2455                 this_window = elapsed - hw->hist_last;
2456
2457                 if (this_window >= iolog->hist_msec) {
2458                         unsigned int *io_u_plat;
2459                         struct io_u_plat_entry *dst;
2460
2461                         /*
2462                          * Make a byte-for-byte copy of the latency histogram
2463                          * stored in td->ts.io_u_plat[ddir], recording it in a
2464                          * log sample. Note that the matching call to free() is
2465                          * located in iolog.c after printing this sample to the
2466                          * log file.
2467                          */
2468                         io_u_plat = (unsigned int *) td->ts.io_u_plat[ddir];
2469                         dst = malloc(sizeof(struct io_u_plat_entry));
2470                         memcpy(&(dst->io_u_plat), io_u_plat,
2471                                 FIO_IO_U_PLAT_NR * sizeof(unsigned int));
2472                         flist_add(&dst->list, &hw->list);
2473                         __add_log_sample(iolog, sample_plat(dst), ddir, bs,
2474                                                 elapsed, offset);
2475
2476                         /*
2477                          * Update the last time we recorded as being now, minus
2478                          * any drift in time we encountered before actually
2479                          * making the record.
2480                          */
2481                         hw->hist_last = elapsed - (this_window - iolog->hist_msec);
2482                         hw->samples = 0;
2483                 }
2484         }
2485
2486         td_io_u_unlock(td);
2487 }
2488
2489 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
2490                      unsigned long usec, unsigned int bs, uint64_t offset)
2491 {
2492         struct thread_stat *ts = &td->ts;
2493
2494         if (!ddir_rw(ddir))
2495                 return;
2496
2497         td_io_u_lock(td);
2498
2499         add_stat_sample(&ts->slat_stat[ddir], usec);
2500
2501         if (td->slat_log)
2502                 add_log_sample(td, td->slat_log, sample_val(usec), ddir, bs, offset);
2503
2504         td_io_u_unlock(td);
2505 }
2506
2507 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
2508                     unsigned long long nsec, unsigned int bs, uint64_t offset)
2509 {
2510         struct thread_stat *ts = &td->ts;
2511
2512         if (!ddir_rw(ddir))
2513                 return;
2514
2515         td_io_u_lock(td);
2516
2517         add_stat_sample(&ts->lat_stat[ddir], nsec);
2518
2519         if (td->lat_log)
2520                 add_log_sample(td, td->lat_log, sample_val(nsec), ddir, bs,
2521                                offset);
2522
2523         if (ts->lat_percentiles)
2524                 add_clat_percentile_sample(ts, nsec, ddir);
2525
2526         td_io_u_unlock(td);
2527 }
2528
2529 void add_bw_sample(struct thread_data *td, struct io_u *io_u,
2530                    unsigned int bytes, unsigned long long spent)
2531 {
2532         struct thread_stat *ts = &td->ts;
2533         unsigned long rate;
2534
2535         if (spent)
2536                 rate = (unsigned long) (bytes * 1000000ULL / spent);
2537         else
2538                 rate = 0;
2539
2540         td_io_u_lock(td);
2541
2542         add_stat_sample(&ts->bw_stat[io_u->ddir], rate);
2543
2544         if (td->bw_log)
2545                 add_log_sample(td, td->bw_log, sample_val(rate), io_u->ddir,
2546                                bytes, io_u->offset);
2547
2548         td->stat_io_bytes[io_u->ddir] = td->this_io_bytes[io_u->ddir];
2549         td_io_u_unlock(td);
2550 }
2551
2552 static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
2553                          struct timespec *t, unsigned int avg_time,
2554                          uint64_t *this_io_bytes, uint64_t *stat_io_bytes,
2555                          struct io_stat *stat, struct io_log *log,
2556                          bool is_kb)
2557 {
2558         unsigned long spent, rate;
2559         enum fio_ddir ddir;
2560         unsigned int next, next_log;
2561
2562         next_log = avg_time;
2563
2564         spent = mtime_since(parent_tv, t);
2565         if (spent < avg_time && avg_time - spent >= LOG_MSEC_SLACK)
2566                 return avg_time - spent;
2567
2568         td_io_u_lock(td);
2569
2570         /*
2571          * Compute both read and write rates for the interval.
2572          */
2573         for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
2574                 uint64_t delta;
2575
2576                 delta = this_io_bytes[ddir] - stat_io_bytes[ddir];
2577                 if (!delta)
2578                         continue; /* No entries for interval */
2579
2580                 if (spent) {
2581                         if (is_kb)
2582                                 rate = delta * 1000 / spent / 1024; /* KiB/s */
2583                         else
2584                                 rate = (delta * 1000) / spent;
2585                 } else
2586                         rate = 0;
2587
2588                 add_stat_sample(&stat[ddir], rate);
2589
2590                 if (log) {
2591                         unsigned int bs = 0;
2592
2593                         if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
2594                                 bs = td->o.min_bs[ddir];
2595
2596                         next = add_log_sample(td, log, sample_val(rate), ddir, bs, 0);
2597                         next_log = min(next_log, next);
2598                 }
2599
2600                 stat_io_bytes[ddir] = this_io_bytes[ddir];
2601         }
2602
2603         timespec_add_msec(parent_tv, avg_time);
2604
2605         td_io_u_unlock(td);
2606
2607         if (spent <= avg_time)
2608                 next = avg_time;
2609         else
2610                 next = avg_time - (1 + spent - avg_time);
2611
2612         return min(next, next_log);
2613 }
2614
2615 static int add_bw_samples(struct thread_data *td, struct timespec *t)
2616 {
2617         return __add_samples(td, &td->bw_sample_time, t, td->o.bw_avg_time,
2618                                 td->this_io_bytes, td->stat_io_bytes,
2619                                 td->ts.bw_stat, td->bw_log, true);
2620 }
2621
2622 void add_iops_sample(struct thread_data *td, struct io_u *io_u,
2623                      unsigned int bytes)
2624 {
2625         struct thread_stat *ts = &td->ts;
2626
2627         td_io_u_lock(td);
2628
2629         add_stat_sample(&ts->iops_stat[io_u->ddir], 1);
2630
2631         if (td->iops_log)
2632                 add_log_sample(td, td->iops_log, sample_val(1), io_u->ddir,
2633                                bytes, io_u->offset);
2634
2635         td->stat_io_blocks[io_u->ddir] = td->this_io_blocks[io_u->ddir];
2636         td_io_u_unlock(td);
2637 }
2638
2639 static int add_iops_samples(struct thread_data *td, struct timespec *t)
2640 {
2641         return __add_samples(td, &td->iops_sample_time, t, td->o.iops_avg_time,
2642                                 td->this_io_blocks, td->stat_io_blocks,
2643                                 td->ts.iops_stat, td->iops_log, false);
2644 }
2645
2646 /*
2647  * Returns msecs to next event
2648  */
2649 int calc_log_samples(void)
2650 {
2651         struct thread_data *td;
2652         unsigned int next = ~0U, tmp;
2653         struct timespec now;
2654         int i;
2655
2656         fio_gettime(&now, NULL);
2657
2658         for_each_td(td, i) {
2659                 if (!td->o.stats)
2660                         continue;
2661                 if (in_ramp_time(td) ||
2662                     !(td->runstate == TD_RUNNING || td->runstate == TD_VERIFYING)) {
2663                         next = min(td->o.iops_avg_time, td->o.bw_avg_time);
2664                         continue;
2665                 }
2666                 if (!td->bw_log ||
2667                         (td->bw_log && !per_unit_log(td->bw_log))) {
2668                         tmp = add_bw_samples(td, &now);
2669                         if (tmp < next)
2670                                 next = tmp;
2671                 }
2672                 if (!td->iops_log ||
2673                         (td->iops_log && !per_unit_log(td->iops_log))) {
2674                         tmp = add_iops_samples(td, &now);
2675                         if (tmp < next)
2676                                 next = tmp;
2677                 }
2678         }
2679
2680         return next == ~0U ? 0 : next;
2681 }
2682
2683 void stat_init(void)
2684 {
2685         stat_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
2686 }
2687
2688 void stat_exit(void)
2689 {
2690         /*
2691          * When we have the mutex, we know out-of-band access to it
2692          * have ended.
2693          */
2694         fio_mutex_down(stat_mutex);
2695         fio_mutex_remove(stat_mutex);
2696 }
2697
2698 /*
2699  * Called from signal handler. Wake up status thread.
2700  */
2701 void show_running_run_stats(void)
2702 {
2703         helper_do_stat();
2704 }
2705
2706 uint32_t *io_u_block_info(struct thread_data *td, struct io_u *io_u)
2707 {
2708         /* Ignore io_u's which span multiple blocks--they will just get
2709          * inaccurate counts. */
2710         int idx = (io_u->offset - io_u->file->file_offset)
2711                         / td->o.bs[DDIR_TRIM];
2712         uint32_t *info = &td->ts.block_infos[idx];
2713         assert(idx < td->ts.nr_block_infos);
2714         return info;
2715 }