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
  17 static struct fio_mutex *stat_mutex;
  18
  19 void update_rusage_stat(struct thread_data *td)
  20 {
  21         struct thread_stat *ts = &td->ts;
  22
  23         fio_getrusage(&td->ru_end);
  24         ts->usr_time += mtime_since(&td->ru_start.ru_utime,
  25                                         &td->ru_end.ru_utime);
  26         ts->sys_time += mtime_since(&td->ru_start.ru_stime,
  27                                         &td->ru_end.ru_stime);
  28         ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
  29                         - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
  30         ts->minf += td->ru_end.ru_minflt - td->ru_start.ru_minflt;
  31         ts->majf += td->ru_end.ru_majflt - td->ru_start.ru_majflt;
  32
  33         memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
  34 }
  35
  36 /*
  37  * Given a latency, return the index of the corresponding bucket in
  38  * the structure tracking percentiles.
  39  *
  40  * (1) find the group (and error bits) that the value (latency)
  41  * belongs to by looking at its MSB. (2) find the bucket number in the
  42  * group by looking at the index bits.
  43  *
  44  */
  45 static unsigned int plat_val_to_idx(unsigned int val)
  46 {
  47         unsigned int msb, error_bits, base, offset, idx;
  48
  49         /* Find MSB starting from bit 0 */
  50         if (val == 0)
  51                 msb = 0;
  52         else
  53                 msb = (sizeof(val)*8) - __builtin_clz(val) - 1;
  54
  55         /*
  56          * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
  57          * all bits of the sample as index
  58          */
  59         if (msb <= FIO_IO_U_PLAT_BITS)
  60                 return val;
  61
  62         /* Compute the number of error bits to discard*/
  63         error_bits = msb - FIO_IO_U_PLAT_BITS;
  64
  65         /* Compute the number of buckets before the group */
  66         base = (error_bits + 1) << FIO_IO_U_PLAT_BITS;
  67
  68         /*
  69          * Discard the error bits and apply the mask to find the
  70          * index for the buckets in the group
  71          */
  72         offset = (FIO_IO_U_PLAT_VAL - 1) & (val >> error_bits);
  73
  74         /* Make sure the index does not exceed (array size - 1) */
  75         idx = (base + offset) < (FIO_IO_U_PLAT_NR - 1) ?
  76                 (base + offset) : (FIO_IO_U_PLAT_NR - 1);
  77
  78         return idx;
  79 }
  80
  81 /*
  82  * Convert the given index of the bucket array to the value
  83  * represented by the bucket
  84  */
  85 static unsigned int plat_idx_to_val(unsigned int idx)
  86 {
  87         unsigned int error_bits, k, base;
  88
  89         assert(idx < FIO_IO_U_PLAT_NR);
  90
  91         /* MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
  92          * all bits of the sample as index */
  93         if (idx < (FIO_IO_U_PLAT_VAL << 1))
  94                 return idx;
  95
  96         /* Find the group and compute the minimum value of that group */
  97         error_bits = (idx >> FIO_IO_U_PLAT_BITS) - 1;
  98         base = 1 << (error_bits + FIO_IO_U_PLAT_BITS);
  99
 100         /* Find its bucket number of the group */
 101         k = idx % FIO_IO_U_PLAT_VAL;
 102
 103         /* Return the mean of the range of the bucket */
 104         return base + ((k + 0.5) * (1 << error_bits));
 105 }
 106
 107 static int double_cmp(const void *a, const void *b)
 108 {
 109         const fio_fp64_t fa = *(const fio_fp64_t *) a;
 110         const fio_fp64_t fb = *(const fio_fp64_t *) b;
 111         int cmp = 0;
 112
 113         if (fa.u.f > fb.u.f)
 114                 cmp = 1;
 115         else if (fa.u.f < fb.u.f)
 116                 cmp = -1;
 117
 118         return cmp;
 119 }
 120
 121 unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 122                                    fio_fp64_t *plist, unsigned int **output,
 123                                    unsigned int *maxv, unsigned int *minv)
 124 {
 125         unsigned long sum = 0;
 126         unsigned int len, i, j = 0;
 127         unsigned int oval_len = 0;
 128         unsigned int *ovals = NULL;
 129         int is_last;
 130
 131         *minv = -1U;
 132         *maxv = 0;
 133
 134         len = 0;
 135         while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
 136                 len++;
 137
 138         if (!len)
 139                 return 0;
 140
 141         /*
 142          * Sort the percentile list. Note that it may already be sorted if
 143          * we are using the default values, but since it's a short list this
 144          * isn't a worry. Also note that this does not work for NaN values.
 145          */
 146         if (len > 1)
 147                 qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
 148
 149         /*
 150          * Calculate bucket values, note down max and min values
 151          */
 152         is_last = 0;
 153         for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
 154                 sum += io_u_plat[i];
 155                 while (sum >= (plist[j].u.f / 100.0 * nr)) {
 156                         assert(plist[j].u.f <= 100.0);
 157
 158                         if (j == oval_len) {
 159                                 oval_len += 100;
 160                                 ovals = realloc(ovals, oval_len * sizeof(unsigned int));
 161                         }
 162
 163                         ovals[j] = plat_idx_to_val(i);
 164                         if (ovals[j] < *minv)
 165                                 *minv = ovals[j];
 166                         if (ovals[j] > *maxv)
 167                                 *maxv = ovals[j];
 168
 169                         is_last = (j == len - 1);
 170                         if (is_last)
 171                                 break;
 172
 173                         j++;
 174                 }
 175         }
 176
 177         *output = ovals;
 178         return len;
 179 }
 180
 181 /*
 182  * Find and display the p-th percentile of clat
 183  */
 184 static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 185                                   fio_fp64_t *plist, unsigned int precision)
 186 {
 187         unsigned int len, j = 0, minv, maxv;
 188         unsigned int *ovals;
 189         int is_last, per_line, scale_down;
 190         char fmt[32];
 191
 192         len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
 193         if (!len)
 194                 goto out;
 195
 196         /*
 197          * We default to usecs, but if the value range is such that we
 198          * should scale down to msecs, do that.
 199          */
 200         if (minv > 2000 && maxv > 99999) {
 201                 scale_down = 1;
 202                 log_info("    clat percentiles (msec):\n     |");
 203         } else {
 204                 scale_down = 0;
 205                 log_info("    clat percentiles (usec):\n     |");
 206         }
 207
 208         snprintf(fmt, sizeof(fmt), "%%1.%uf", precision);
 209         per_line = (80 - 7) / (precision + 14);
 210
 211         for (j = 0; j < len; j++) {
 212                 char fbuf[16], *ptr = fbuf;
 213
 214                 /* for formatting */
 215                 if (j != 0 && (j % per_line) == 0)
 216                         log_info("     |");
 217
 218                 /* end of the list */
 219                 is_last = (j == len - 1);
 220
 221                 if (plist[j].u.f < 10.0)
 222                         ptr += sprintf(fbuf, " ");
 223
 224                 snprintf(ptr, sizeof(fbuf), fmt, plist[j].u.f);
 225
 226                 if (scale_down)
 227                         ovals[j] = (ovals[j] + 999) / 1000;
 228
 229                 log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
 230
 231                 if (is_last)
 232                         break;
 233
 234                 if ((j % per_line) == per_line - 1)     /* for formatting */
 235                         log_info("\n");
 236         }
 237
 238 out:
 239         if (ovals)
 240                 free(ovals);
 241 }
 242
 243 int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
 244              double *mean, double *dev)
 245 {
 246         double n = (double) is->samples;
 247
 248         if (n == 0)
 249                 return 0;
 250
 251         *min = is->min_val;
 252         *max = is->max_val;
 253         *mean = is->mean.u.f;
 254
 255         if (n > 1.0)
 256                 *dev = sqrt(is->S.u.f / (n - 1.0));
 257         else
 258                 *dev = 0;
 259
 260         return 1;
 261 }
 262
 263 void show_group_stats(struct group_run_stats *rs)
 264 {
 265         char *p1, *p2, *p3, *p4;
 266         const char *ddir_str[] = { "   READ", "  WRITE" , "   TRIM"};
 267         int i;
 268
 269         log_info("\nRun status group %d (all jobs):\n", rs->groupid);
 270
 271         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 272                 const int i2p = is_power_of_2(rs->kb_base);
 273
 274                 if (!rs->max_run[i])
 275                         continue;
 276
 277                 p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p, 8);
 278                 p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p, rs->unit_base);
 279                 p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
 280                 p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
 281
 282                 log_info("%s: io=%s, aggrb=%s/s, minb=%s/s, maxb=%s/s,"
 283                          " mint=%llumsec, maxt=%llumsec\n",
 284                                 rs->unified_rw_rep ? "  MIXED" : ddir_str[i],
 285                                 p1, p2, p3, p4,
 286                                 (unsigned long long) rs->min_run[i],
 287                                 (unsigned long long) rs->max_run[i]);
 288
 289                 free(p1);
 290                 free(p2);
 291                 free(p3);
 292                 free(p4);
 293         }
 294 }
 295
 296 void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
 297 {
 298         int i;
 299
 300         /*
 301          * Do depth distribution calculations
 302          */
 303         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 304                 if (total) {
 305                         io_u_dist[i] = (double) map[i] / (double) total;
 306                         io_u_dist[i] *= 100.0;
 307                         if (io_u_dist[i] < 0.1 && map[i])
 308                                 io_u_dist[i] = 0.1;
 309                 } else
 310                         io_u_dist[i] = 0.0;
 311         }
 312 }
 313
 314 static void stat_calc_lat(struct thread_stat *ts, double *dst,
 315                           unsigned int *src, int nr)
 316 {
 317         unsigned long total = ddir_rw_sum(ts->total_io_u);
 318         int i;
 319
 320         /*
 321          * Do latency distribution calculations
 322          */
 323         for (i = 0; i < nr; i++) {
 324                 if (total) {
 325                         dst[i] = (double) src[i] / (double) total;
 326                         dst[i] *= 100.0;
 327                         if (dst[i] < 0.01 && src[i])
 328                                 dst[i] = 0.01;
 329                 } else
 330                         dst[i] = 0.0;
 331         }
 332 }
 333
 334 void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 335 {
 336         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
 337 }
 338
 339 void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
 340 {
 341         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 342 }
 343
 344 static void display_lat(const char *name, unsigned long min, unsigned long max,
 345                         double mean, double dev)
 346 {
 347         const char *base = "(usec)";
 348         char *minp, *maxp;
 349
 350         if (!usec_to_msec(&min, &max, &mean, &dev))
 351                 base = "(msec)";
 352
 353         minp = num2str(min, 6, 1, 0, 0);
 354         maxp = num2str(max, 6, 1, 0, 0);
 355
 356         log_info("    %s %s: min=%s, max=%s, avg=%5.02f,"
 357                  " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
 358
 359         free(minp);
 360         free(maxp);
 361 }
 362
 363 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
 364                              int ddir)
 365 {
 366         const char *ddir_str[] = { "read ", "write", "trim" };
 367         unsigned long min, max, runt;
 368         unsigned long long bw, iops;
 369         double mean, dev;
 370         char *io_p, *bw_p, *iops_p;
 371         int i2p;
 372
 373         assert(ddir_rw(ddir));
 374
 375         if (!ts->runtime[ddir])
 376                 return;
 377
 378         i2p = is_power_of_2(rs->kb_base);
 379         runt = ts->runtime[ddir];
 380
 381         bw = (1000 * ts->io_bytes[ddir]) / runt;
 382         io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p, 8);
 383         bw_p = num2str(bw, 6, 1, i2p, ts->unit_base);
 384
 385         iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
 386         iops_p = num2str(iops, 6, 1, 0, 0);
 387
 388         log_info("  %s: io=%s, bw=%s/s, iops=%s, runt=%6llumsec\n",
 389                                 rs->unified_rw_rep ? "mixed" : ddir_str[ddir],
 390                                 io_p, bw_p, iops_p,
 391                                 (unsigned long long) ts->runtime[ddir]);
 392
 393         free(io_p);
 394         free(bw_p);
 395         free(iops_p);
 396
 397         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 398                 display_lat("slat", min, max, mean, dev);
 399         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 400                 display_lat("clat", min, max, mean, dev);
 401         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
 402                 display_lat(" lat", min, max, mean, dev);
 403
 404         if (ts->clat_percentiles) {
 405                 show_clat_percentiles(ts->io_u_plat[ddir],
 406                                         ts->clat_stat[ddir].samples,
 407                                         ts->percentile_list,
 408                                         ts->percentile_precision);
 409         }
 410         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 411                 double p_of_agg = 100.0, fkb_base = (double)rs->kb_base;
 412                 const char *bw_str = (rs->unit_base == 1 ? "Kbit" : "KB");
 413
 414                 if (rs->unit_base == 1) {
 415                         min *= 8.0;
 416                         max *= 8.0;
 417                         mean *= 8.0;
 418                         dev *= 8.0;
 419                 }
 420
 421                 if (rs->agg[ddir]) {
 422                         p_of_agg = mean * 100 / (double) rs->agg[ddir];
 423                         if (p_of_agg > 100.0)
 424                                 p_of_agg = 100.0;
 425                 }
 426
 427                 if (mean > fkb_base * fkb_base) {
 428                         min /= fkb_base;
 429                         max /= fkb_base;
 430                         mean /= fkb_base;
 431                         dev /= fkb_base;
 432                         bw_str = (rs->unit_base == 1 ? "Mbit" : "MB");
 433                 }
 434
 435                 log_info("    bw (%-4s/s): min=%5lu, max=%5lu, per=%3.2f%%,"
 436                          " avg=%5.02f, stdev=%5.02f\n", bw_str, min, max,
 437                                                         p_of_agg, mean, dev);
 438         }
 439 }
 440
 441 static int show_lat(double *io_u_lat, int nr, const char **ranges,
 442                     const char *msg)
 443 {
 444         int new_line = 1, i, line = 0, shown = 0;
 445
 446         for (i = 0; i < nr; i++) {
 447                 if (io_u_lat[i] <= 0.0)
 448                         continue;
 449                 shown = 1;
 450                 if (new_line) {
 451                         if (line)
 452                                 log_info("\n");
 453                         log_info("    lat (%s) : ", msg);
 454                         new_line = 0;
 455                         line = 0;
 456                 }
 457                 if (line)
 458                         log_info(", ");
 459                 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
 460                 line++;
 461                 if (line == 5)
 462                         new_line = 1;
 463         }
 464
 465         if (shown)
 466                 log_info("\n");
 467
 468         return shown;
 469 }
 470
 471 static void show_lat_u(double *io_u_lat_u)
 472 {
 473         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 474                                  "250=", "500=", "750=", "1000=", };
 475
 476         show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
 477 }
 478
 479 static void show_lat_m(double *io_u_lat_m)
 480 {
 481         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 482                                  "250=", "500=", "750=", "1000=", "2000=",
 483                                  ">=2000=", };
 484
 485         show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
 486 }
 487
 488 static void show_latencies(struct thread_stat *ts)
 489 {
 490         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 491         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 492
 493         stat_calc_lat_u(ts, io_u_lat_u);
 494         stat_calc_lat_m(ts, io_u_lat_m);
 495
 496         show_lat_u(io_u_lat_u);
 497         show_lat_m(io_u_lat_m);
 498 }
 499
 500 void show_thread_status_normal(struct thread_stat *ts, struct group_run_stats *rs)
 501 {
 502         double usr_cpu, sys_cpu;
 503         unsigned long runtime;
 504         double io_u_dist[FIO_IO_U_MAP_NR];
 505         time_t time_p;
 506         char time_buf[64];
 507
 508         if (!(ts->io_bytes[DDIR_READ] + ts->io_bytes[DDIR_WRITE] +
 509             ts->io_bytes[DDIR_TRIM]) && !(ts->total_io_u[DDIR_READ] +
 510             ts->total_io_u[DDIR_WRITE] + ts->total_io_u[DDIR_TRIM]))
 511                 return;
 512
 513         time(&time_p);
 514         os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
 515
 516         if (!ts->error) {
 517                 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
 518                                         ts->name, ts->groupid, ts->members,
 519                                         ts->error, (int) ts->pid, time_buf);
 520         } else {
 521                 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
 522                                         ts->name, ts->groupid, ts->members,
 523                                         ts->error, ts->verror, (int) ts->pid,
 524                                         time_buf);
 525         }
 526
 527         if (strlen(ts->description))
 528                 log_info("  Description  : [%s]\n", ts->description);
 529
 530         if (ts->io_bytes[DDIR_READ])
 531                 show_ddir_status(rs, ts, DDIR_READ);
 532         if (ts->io_bytes[DDIR_WRITE])
 533                 show_ddir_status(rs, ts, DDIR_WRITE);
 534         if (ts->io_bytes[DDIR_TRIM])
 535                 show_ddir_status(rs, ts, DDIR_TRIM);
 536
 537         show_latencies(ts);
 538
 539         runtime = ts->total_run_time;
 540         if (runtime) {
 541                 double runt = (double) runtime;
 542
 543                 usr_cpu = (double) ts->usr_time * 100 / runt;
 544                 sys_cpu = (double) ts->sys_time * 100 / runt;
 545         } else {
 546                 usr_cpu = 0;
 547                 sys_cpu = 0;
 548         }
 549
 550         log_info("  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%llu,"
 551                  " majf=%llu, minf=%llu\n", usr_cpu, sys_cpu,
 552                         (unsigned long long) ts->ctx,
 553                         (unsigned long long) ts->majf,
 554                         (unsigned long long) ts->minf);
 555
 556         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
 557         log_info("  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
 558                  " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 559                                         io_u_dist[1], io_u_dist[2],
 560                                         io_u_dist[3], io_u_dist[4],
 561                                         io_u_dist[5], io_u_dist[6]);
 562
 563         stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
 564         log_info("     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 565                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 566                                         io_u_dist[1], io_u_dist[2],
 567                                         io_u_dist[3], io_u_dist[4],
 568                                         io_u_dist[5], io_u_dist[6]);
 569         stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
 570         log_info("     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 571                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 572                                         io_u_dist[1], io_u_dist[2],
 573                                         io_u_dist[3], io_u_dist[4],
 574                                         io_u_dist[5], io_u_dist[6]);
 575         log_info("     issued    : total=r=%llu/w=%llu/d=%llu,"
 576                                  " short=r=%llu/w=%llu/d=%llu\n",
 577                                         (unsigned long long) ts->total_io_u[0],
 578                                         (unsigned long long) ts->total_io_u[1],
 579                                         (unsigned long long) ts->total_io_u[2],
 580                                         (unsigned long long) ts->short_io_u[0],
 581                                         (unsigned long long) ts->short_io_u[1],
 582                                         (unsigned long long) ts->short_io_u[2]);
 583         if (ts->continue_on_error) {
 584                 log_info("     errors    : total=%llu, first_error=%d/<%s>\n",
 585                                         (unsigned long long)ts->total_err_count,
 586                                         ts->first_error,
 587                                         strerror(ts->first_error));
 588         }
 589         if (ts->latency_depth) {
 590                 log_info("     latency   : target=%llu, window=%llu, percentile=%.2f%%, depth=%u\n",
 591                                         (unsigned long long)ts->latency_target,
 592                                         (unsigned long long)ts->latency_window,
 593                                         ts->latency_percentile.u.f,
 594                                         ts->latency_depth);
 595         }
 596 }
 597
 598 static void show_ddir_status_terse(struct thread_stat *ts,
 599                                    struct group_run_stats *rs, int ddir)
 600 {
 601         unsigned long min, max;
 602         unsigned long long bw, iops;
 603         unsigned int *ovals = NULL;
 604         double mean, dev;
 605         unsigned int len, minv, maxv;
 606         int i;
 607
 608         assert(ddir_rw(ddir));
 609
 610         iops = bw = 0;
 611         if (ts->runtime[ddir]) {
 612                 uint64_t runt = ts->runtime[ddir];
 613
 614                 bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
 615                 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
 616         }
 617
 618         log_info(";%llu;%llu;%llu;%llu",
 619                 (unsigned long long) ts->io_bytes[ddir] >> 10, bw, iops,
 620                                         (unsigned long long) ts->runtime[ddir]);
 621
 622         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 623                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 624         else
 625                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 626
 627         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 628                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 629         else
 630                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 631
 632         if (ts->clat_percentiles) {
 633                 len = calc_clat_percentiles(ts->io_u_plat[ddir],
 634                                         ts->clat_stat[ddir].samples,
 635                                         ts->percentile_list, &ovals, &maxv,
 636                                         &minv);
 637         } else
 638                 len = 0;
 639
 640         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 641                 if (i >= len) {
 642                         log_info(";0%%=0");
 643                         continue;
 644                 }
 645                 log_info(";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
 646         }
 647
 648         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
 649                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 650         else
 651                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 652
 653         if (ovals)
 654                 free(ovals);
 655
 656         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 657                 double p_of_agg = 100.0;
 658
 659                 if (rs->agg[ddir]) {
 660                         p_of_agg = mean * 100 / (double) rs->agg[ddir];
 661                         if (p_of_agg > 100.0)
 662                                 p_of_agg = 100.0;
 663                 }
 664
 665                 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
 666         } else
 667                 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
 668 }
 669
 670 static void add_ddir_status_json(struct thread_stat *ts,
 671                 struct group_run_stats *rs, int ddir, struct json_object *parent)
 672 {
 673         unsigned long min, max;
 674         unsigned long long bw, iops;
 675         unsigned int *ovals = NULL;
 676         double mean, dev;
 677         unsigned int len, minv, maxv;
 678         int i;
 679         const char *ddirname[] = {"read", "write", "trim"};
 680         struct json_object *dir_object, *tmp_object, *percentile_object;
 681         char buf[120];
 682         double p_of_agg = 100.0;
 683
 684         assert(ddir_rw(ddir));
 685
 686         if (ts->unified_rw_rep && ddir != DDIR_READ)
 687                 return;
 688
 689         dir_object = json_create_object();
 690         json_object_add_value_object(parent,
 691                 ts->unified_rw_rep ? "mixed" : ddirname[ddir], dir_object);
 692
 693         iops = bw = 0;
 694         if (ts->runtime[ddir]) {
 695                 uint64_t runt = ts->runtime[ddir];
 696
 697                 bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
 698                 iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
 699         }
 700
 701         json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir] >> 10);
 702         json_object_add_value_int(dir_object, "bw", bw);
 703         json_object_add_value_int(dir_object, "iops", iops);
 704         json_object_add_value_int(dir_object, "runtime", ts->runtime[ddir]);
 705
 706         if (!calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
 707                 min = max = 0;
 708                 mean = dev = 0.0;
 709         }
 710         tmp_object = json_create_object();
 711         json_object_add_value_object(dir_object, "slat", tmp_object);
 712         json_object_add_value_int(tmp_object, "min", min);
 713         json_object_add_value_int(tmp_object, "max", max);
 714         json_object_add_value_float(tmp_object, "mean", mean);
 715         json_object_add_value_float(tmp_object, "stddev", dev);
 716
 717         if (!calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
 718                 min = max = 0;
 719                 mean = dev = 0.0;
 720         }
 721         tmp_object = json_create_object();
 722         json_object_add_value_object(dir_object, "clat", tmp_object);
 723         json_object_add_value_int(tmp_object, "min", min);
 724         json_object_add_value_int(tmp_object, "max", max);
 725         json_object_add_value_float(tmp_object, "mean", mean);
 726         json_object_add_value_float(tmp_object, "stddev", dev);
 727
 728         if (ts->clat_percentiles) {
 729                 len = calc_clat_percentiles(ts->io_u_plat[ddir],
 730                                         ts->clat_stat[ddir].samples,
 731                                         ts->percentile_list, &ovals, &maxv,
 732                                         &minv);
 733         } else
 734                 len = 0;
 735
 736         percentile_object = json_create_object();
 737         json_object_add_value_object(tmp_object, "percentile", percentile_object);
 738         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 739                 if (i >= len) {
 740                         json_object_add_value_int(percentile_object, "0.00", 0);
 741                         continue;
 742                 }
 743                 snprintf(buf, sizeof(buf), "%f", ts->percentile_list[i].u.f);
 744                 json_object_add_value_int(percentile_object, (const char *)buf, ovals[i]);
 745         }
 746
 747         if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
 748                 min = max = 0;
 749                 mean = dev = 0.0;
 750         }
 751         tmp_object = json_create_object();
 752         json_object_add_value_object(dir_object, "lat", tmp_object);
 753         json_object_add_value_int(tmp_object, "min", min);
 754         json_object_add_value_int(tmp_object, "max", max);
 755         json_object_add_value_float(tmp_object, "mean", mean);
 756         json_object_add_value_float(tmp_object, "stddev", dev);
 757         if (ovals)
 758                 free(ovals);
 759
 760         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 761                 if (rs->agg[ddir]) {
 762                         p_of_agg = mean * 100 / (double) rs->agg[ddir];
 763                         if (p_of_agg > 100.0)
 764                                 p_of_agg = 100.0;
 765                 }
 766         } else {
 767                 min = max = 0;
 768                 p_of_agg = mean = dev = 0.0;
 769         }
 770         json_object_add_value_int(dir_object, "bw_min", min);
 771         json_object_add_value_int(dir_object, "bw_max", max);
 772         json_object_add_value_float(dir_object, "bw_agg", mean);
 773         json_object_add_value_float(dir_object, "bw_mean", mean);
 774         json_object_add_value_float(dir_object, "bw_dev", dev);
 775 }
 776
 777 static void show_thread_status_terse_v2(struct thread_stat *ts,
 778                                         struct group_run_stats *rs)
 779 {
 780         double io_u_dist[FIO_IO_U_MAP_NR];
 781         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 782         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 783         double usr_cpu, sys_cpu;
 784         int i;
 785
 786         /* General Info */
 787         log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error);
 788         /* Log Read Status */
 789         show_ddir_status_terse(ts, rs, DDIR_READ);
 790         /* Log Write Status */
 791         show_ddir_status_terse(ts, rs, DDIR_WRITE);
 792         /* Log Trim Status */
 793         show_ddir_status_terse(ts, rs, DDIR_TRIM);
 794
 795         /* CPU Usage */
 796         if (ts->total_run_time) {
 797                 double runt = (double) ts->total_run_time;
 798
 799                 usr_cpu = (double) ts->usr_time * 100 / runt;
 800                 sys_cpu = (double) ts->sys_time * 100 / runt;
 801         } else {
 802                 usr_cpu = 0;
 803                 sys_cpu = 0;
 804         }
 805
 806         log_info(";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
 807                                                 (unsigned long long) ts->ctx,
 808                                                 (unsigned long long) ts->majf,
 809                                                 (unsigned long long) ts->minf);
 810
 811         /* Calc % distribution of IO depths, usecond, msecond latency */
 812         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
 813         stat_calc_lat_u(ts, io_u_lat_u);
 814         stat_calc_lat_m(ts, io_u_lat_m);
 815
 816         /* Only show fixed 7 I/O depth levels*/
 817         log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
 818                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
 819                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
 820
 821         /* Microsecond latency */
 822         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
 823                 log_info(";%3.2f%%", io_u_lat_u[i]);
 824         /* Millisecond latency */
 825         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
 826                 log_info(";%3.2f%%", io_u_lat_m[i]);
 827         /* Additional output if continue_on_error set - default off*/
 828         if (ts->continue_on_error)
 829                 log_info(";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
 830         log_info("\n");
 831
 832         /* Additional output if description is set */
 833         if (ts->description)
 834                 log_info(";%s", ts->description);
 835
 836         log_info("\n");
 837 }
 838
 839 static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
 840                                            struct group_run_stats *rs, int ver)
 841 {
 842         double io_u_dist[FIO_IO_U_MAP_NR];
 843         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 844         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 845         double usr_cpu, sys_cpu;
 846         int i;
 847
 848         /* General Info */
 849         log_info("%d;%s;%s;%d;%d", ver, fio_version_string,
 850                                         ts->name, ts->groupid, ts->error);
 851         /* Log Read Status */
 852         show_ddir_status_terse(ts, rs, DDIR_READ);
 853         /* Log Write Status */
 854         show_ddir_status_terse(ts, rs, DDIR_WRITE);
 855         /* Log Trim Status */
 856         if (ver == 4)
 857                 show_ddir_status_terse(ts, rs, DDIR_TRIM);
 858
 859         /* CPU Usage */
 860         if (ts->total_run_time) {
 861                 double runt = (double) ts->total_run_time;
 862
 863                 usr_cpu = (double) ts->usr_time * 100 / runt;
 864                 sys_cpu = (double) ts->sys_time * 100 / runt;
 865         } else {
 866                 usr_cpu = 0;
 867                 sys_cpu = 0;
 868         }
 869
 870         log_info(";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
 871                                                 (unsigned long long) ts->ctx,
 872                                                 (unsigned long long) ts->majf,
 873                                                 (unsigned long long) ts->minf);
 874
 875         /* Calc % distribution of IO depths, usecond, msecond latency */
 876         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
 877         stat_calc_lat_u(ts, io_u_lat_u);
 878         stat_calc_lat_m(ts, io_u_lat_m);
 879
 880         /* Only show fixed 7 I/O depth levels*/
 881         log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
 882                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
 883                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
 884
 885         /* Microsecond latency */
 886         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
 887                 log_info(";%3.2f%%", io_u_lat_u[i]);
 888         /* Millisecond latency */
 889         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
 890                 log_info(";%3.2f%%", io_u_lat_m[i]);
 891
 892         /* disk util stats, if any */
 893         if (is_backend)
 894                 show_disk_util(1, NULL);
 895
 896         /* Additional output if continue_on_error set - default off*/
 897         if (ts->continue_on_error)
 898                 log_info(";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
 899
 900         /* Additional output if description is set */
 901         if (strlen(ts->description))
 902                 log_info(";%s", ts->description);
 903
 904         log_info("\n");
 905 }
 906
 907 static struct json_object *show_thread_status_json(struct thread_stat *ts,
 908                                     struct group_run_stats *rs)
 909 {
 910         struct json_object *root, *tmp;
 911         double io_u_dist[FIO_IO_U_MAP_NR];
 912         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 913         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 914         double usr_cpu, sys_cpu;
 915         int i;
 916
 917         root = json_create_object();
 918         json_object_add_value_string(root, "jobname", ts->name);
 919         json_object_add_value_int(root, "groupid", ts->groupid);
 920         json_object_add_value_int(root, "error", ts->error);
 921
 922         add_ddir_status_json(ts, rs, DDIR_READ, root);
 923         add_ddir_status_json(ts, rs, DDIR_WRITE, root);
 924         add_ddir_status_json(ts, rs, DDIR_TRIM, root);
 925
 926         /* CPU Usage */
 927         if (ts->total_run_time) {
 928                 double runt = (double) ts->total_run_time;
 929
 930                 usr_cpu = (double) ts->usr_time * 100 / runt;
 931                 sys_cpu = (double) ts->sys_time * 100 / runt;
 932         } else {
 933                 usr_cpu = 0;
 934                 sys_cpu = 0;
 935         }
 936         json_object_add_value_float(root, "usr_cpu", usr_cpu);
 937         json_object_add_value_float(root, "sys_cpu", sys_cpu);
 938         json_object_add_value_int(root, "ctx", ts->ctx);
 939         json_object_add_value_int(root, "majf", ts->majf);
 940         json_object_add_value_int(root, "minf", ts->minf);
 941
 942
 943         /* Calc % distribution of IO depths, usecond, msecond latency */
 944         stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
 945         stat_calc_lat_u(ts, io_u_lat_u);
 946         stat_calc_lat_m(ts, io_u_lat_m);
 947
 948         tmp = json_create_object();
 949         json_object_add_value_object(root, "iodepth_level", tmp);
 950         /* Only show fixed 7 I/O depth levels*/
 951         for (i = 0; i < 7; i++) {
 952                 char name[20];
 953                 if (i < 6)
 954                         snprintf(name, 20, "%d", 1 << i);
 955                 else
 956                         snprintf(name, 20, ">=%d", 1 << i);
 957                 json_object_add_value_float(tmp, (const char *)name, io_u_dist[i]);
 958         }
 959
 960         tmp = json_create_object();
 961         json_object_add_value_object(root, "latency_us", tmp);
 962         /* Microsecond latency */
 963         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 964                 const char *ranges[] = { "2", "4", "10", "20", "50", "100",
 965                                  "250", "500", "750", "1000", };
 966                 json_object_add_value_float(tmp, ranges[i], io_u_lat_u[i]);
 967         }
 968         /* Millisecond latency */
 969         tmp = json_create_object();
 970         json_object_add_value_object(root, "latency_ms", tmp);
 971         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) {
 972                 const char *ranges[] = { "2", "4", "10", "20", "50", "100",
 973                                  "250", "500", "750", "1000", "2000",
 974                                  ">=2000", };
 975                 json_object_add_value_float(tmp, ranges[i], io_u_lat_m[i]);
 976         }
 977
 978         /* Additional output if continue_on_error set - default off*/
 979         if (ts->continue_on_error) {
 980                 json_object_add_value_int(root, "total_err", ts->total_err_count);
 981                 json_object_add_value_int(root, "first_error", ts->first_error);
 982         }
 983
 984         if (ts->latency_depth) {
 985                 json_object_add_value_int(root, "latency_depth", ts->latency_depth);
 986                 json_object_add_value_int(root, "latency_target", ts->latency_target);
 987                 json_object_add_value_float(root, "latency_percentile", ts->latency_percentile.u.f);
 988                 json_object_add_value_int(root, "latency_window", ts->latency_window);
 989         }
 990
 991         /* Additional output if description is set */
 992         if (strlen(ts->description))
 993                 json_object_add_value_string(root, "desc", ts->description);
 994
 995         return root;
 996 }
 997
 998 static void show_thread_status_terse(struct thread_stat *ts,
 999                                      struct group_run_stats *rs)
1000 {
1001         if (terse_version == 2)
1002                 show_thread_status_terse_v2(ts, rs);
1003         else if (terse_version == 3 || terse_version == 4)
1004                 show_thread_status_terse_v3_v4(ts, rs, terse_version);
1005         else
1006                 log_err("fio: bad terse version!? %d\n", terse_version);
1007 }
1008
1009 struct json_object *show_thread_status(struct thread_stat *ts,
1010                                        struct group_run_stats *rs)
1011 {
1012         if (output_format == FIO_OUTPUT_TERSE)
1013                 show_thread_status_terse(ts, rs);
1014         else if (output_format == FIO_OUTPUT_JSON)
1015                 return(show_thread_status_json(ts, rs));
1016         else
1017                 show_thread_status_normal(ts, rs);
1018         return NULL;
1019 }
1020
1021 static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
1022 {
1023         double mean, S;
1024
1025         if (src->samples == 0)
1026                 return;
1027
1028         dst->min_val = min(dst->min_val, src->min_val);
1029         dst->max_val = max(dst->max_val, src->max_val);
1030
1031         /*
1032          * Compute new mean and S after the merge
1033          * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
1034          *  #Parallel_algorithm>
1035          */
1036         if (nr == 1) {
1037                 mean = src->mean.u.f;
1038                 S = src->S.u.f;
1039         } else {
1040                 double delta = src->mean.u.f - dst->mean.u.f;
1041
1042                 mean = ((src->mean.u.f * src->samples) +
1043                         (dst->mean.u.f * dst->samples)) /
1044                         (dst->samples + src->samples);
1045
1046                 S =  src->S.u.f + dst->S.u.f + pow(delta, 2.0) *
1047                         (dst->samples * src->samples) /
1048                         (dst->samples + src->samples);
1049         }
1050
1051         dst->samples += src->samples;
1052         dst->mean.u.f = mean;
1053         dst->S.u.f = S;
1054 }
1055
1056 void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
1057 {
1058         int i;
1059
1060         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1061                 if (dst->max_run[i] < src->max_run[i])
1062                         dst->max_run[i] = src->max_run[i];
1063                 if (dst->min_run[i] && dst->min_run[i] > src->min_run[i])
1064                         dst->min_run[i] = src->min_run[i];
1065                 if (dst->max_bw[i] < src->max_bw[i])
1066                         dst->max_bw[i] = src->max_bw[i];
1067                 if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
1068                         dst->min_bw[i] = src->min_bw[i];
1069
1070                 dst->io_kb[i] += src->io_kb[i];
1071                 dst->agg[i] += src->agg[i];
1072         }
1073
1074 }
1075
1076 void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr)
1077 {
1078         int l, k;
1079
1080         for (l = 0; l < DDIR_RWDIR_CNT; l++) {
1081                 if (!dst->unified_rw_rep) {
1082                         sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
1083                         sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
1084                         sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
1085                         sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
1086
1087                         dst->io_bytes[l] += src->io_bytes[l];
1088
1089                         if (dst->runtime[l] < src->runtime[l])
1090                                 dst->runtime[l] = src->runtime[l];
1091                 } else {
1092                         sum_stat(&dst->clat_stat[0], &src->clat_stat[l], nr);
1093                         sum_stat(&dst->slat_stat[0], &src->slat_stat[l], nr);
1094                         sum_stat(&dst->lat_stat[0], &src->lat_stat[l], nr);
1095                         sum_stat(&dst->bw_stat[0], &src->bw_stat[l], nr);
1096
1097                         dst->io_bytes[0] += src->io_bytes[l];
1098
1099                         if (dst->runtime[0] < src->runtime[l])
1100                                 dst->runtime[0] = src->runtime[l];
1101                 }
1102         }
1103
1104         dst->usr_time += src->usr_time;
1105         dst->sys_time += src->sys_time;
1106         dst->ctx += src->ctx;
1107         dst->majf += src->majf;
1108         dst->minf += src->minf;
1109
1110         for (k = 0; k < FIO_IO_U_MAP_NR; k++)
1111                 dst->io_u_map[k] += src->io_u_map[k];
1112         for (k = 0; k < FIO_IO_U_MAP_NR; k++)
1113                 dst->io_u_submit[k] += src->io_u_submit[k];
1114         for (k = 0; k < FIO_IO_U_MAP_NR; k++)
1115                 dst->io_u_complete[k] += src->io_u_complete[k];
1116         for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
1117                 dst->io_u_lat_u[k] += src->io_u_lat_u[k];
1118         for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
1119                 dst->io_u_lat_m[k] += src->io_u_lat_m[k];
1120
1121         for (k = 0; k < DDIR_RWDIR_CNT; k++) {
1122                 if (!dst->unified_rw_rep) {
1123                         dst->total_io_u[k] += src->total_io_u[k];
1124                         dst->short_io_u[k] += src->short_io_u[k];
1125                 } else {
1126                         dst->total_io_u[0] += src->total_io_u[k];
1127                         dst->short_io_u[0] += src->short_io_u[k];
1128                 }
1129         }
1130
1131         for (k = 0; k < DDIR_RWDIR_CNT; k++) {
1132                 int m;
1133
1134                 for (m = 0; m < FIO_IO_U_PLAT_NR; m++) {
1135                         if (!dst->unified_rw_rep)
1136                                 dst->io_u_plat[k][m] += src->io_u_plat[k][m];
1137                         else
1138                                 dst->io_u_plat[0][m] += src->io_u_plat[k][m];
1139                 }
1140         }
1141
1142         dst->total_run_time += src->total_run_time;
1143         dst->total_submit += src->total_submit;
1144         dst->total_complete += src->total_complete;
1145 }
1146
1147 void init_group_run_stat(struct group_run_stats *gs)
1148 {
1149         int i;
1150         memset(gs, 0, sizeof(*gs));
1151
1152         for (i = 0; i < DDIR_RWDIR_CNT; i++)
1153                 gs->min_bw[i] = gs->min_run[i] = ~0UL;
1154 }
1155
1156 void init_thread_stat(struct thread_stat *ts)
1157 {
1158         int j;
1159
1160         memset(ts, 0, sizeof(*ts));
1161
1162         for (j = 0; j < DDIR_RWDIR_CNT; j++) {
1163                 ts->lat_stat[j].min_val = -1UL;
1164                 ts->clat_stat[j].min_val = -1UL;
1165                 ts->slat_stat[j].min_val = -1UL;
1166                 ts->bw_stat[j].min_val = -1UL;
1167         }
1168         ts->groupid = -1;
1169 }
1170
1171 static void __show_run_stats(void)
1172 {
1173         struct group_run_stats *runstats, *rs;
1174         struct thread_data *td;
1175         struct thread_stat *threadstats, *ts;
1176         int i, j, nr_ts, last_ts, idx;
1177         int kb_base_warned = 0;
1178         int unit_base_warned = 0;
1179         struct json_object *root = NULL;
1180         struct json_array *array = NULL;
1181
1182         runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
1183
1184         for (i = 0; i < groupid + 1; i++)
1185                 init_group_run_stat(&runstats[i]);
1186
1187         /*
1188          * find out how many threads stats we need. if group reporting isn't
1189          * enabled, it's one-per-td.
1190          */
1191         nr_ts = 0;
1192         last_ts = -1;
1193         for_each_td(td, i) {
1194                 if (!td->o.group_reporting) {
1195                         nr_ts++;
1196                         continue;
1197                 }
1198                 if (last_ts == td->groupid)
1199                         continue;
1200
1201                 last_ts = td->groupid;
1202                 nr_ts++;
1203         }
1204
1205         threadstats = malloc(nr_ts * sizeof(struct thread_stat));
1206
1207         for (i = 0; i < nr_ts; i++)
1208                 init_thread_stat(&threadstats[i]);
1209
1210         j = 0;
1211         last_ts = -1;
1212         idx = 0;
1213         for_each_td(td, i) {
1214                 if (idx && (!td->o.group_reporting ||
1215                     (td->o.group_reporting && last_ts != td->groupid))) {
1216                         idx = 0;
1217                         j++;
1218                 }
1219
1220                 last_ts = td->groupid;
1221
1222                 ts = &threadstats[j];
1223
1224                 ts->clat_percentiles = td->o.clat_percentiles;
1225                 ts->percentile_precision = td->o.percentile_precision;
1226                 memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
1227
1228                 idx++;
1229                 ts->members++;
1230
1231                 if (ts->groupid == -1) {
1232                         /*
1233                          * These are per-group shared already
1234                          */
1235                         strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE);
1236                         if (td->o.description)
1237                                 strncpy(ts->description, td->o.description,
1238                                                 FIO_JOBNAME_SIZE);
1239                         else
1240                                 memset(ts->description, 0, FIO_JOBNAME_SIZE);
1241
1242                         /*
1243                          * If multiple entries in this group, this is
1244                          * the first member.
1245                          */
1246                         ts->thread_number = td->thread_number;
1247                         ts->groupid = td->groupid;
1248
1249                         /*
1250                          * first pid in group, not very useful...
1251                          */
1252                         ts->pid = td->pid;
1253
1254                         ts->kb_base = td->o.kb_base;
1255                         ts->unit_base = td->o.unit_base;
1256                         ts->unified_rw_rep = td->o.unified_rw_rep;
1257                 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
1258                         log_info("fio: kb_base differs for jobs in group, using"
1259                                  " %u as the base\n", ts->kb_base);
1260                         kb_base_warned = 1;
1261                 } else if (ts->unit_base != td->o.unit_base && !unit_base_warned) {
1262                         log_info("fio: unit_base differs for jobs in group, using"
1263                                  " %u as the base\n", ts->unit_base);
1264                         unit_base_warned = 1;
1265                 }
1266
1267                 ts->continue_on_error = td->o.continue_on_error;
1268                 ts->total_err_count += td->total_err_count;
1269                 ts->first_error = td->first_error;
1270                 if (!ts->error) {
1271                         if (!td->error && td->o.continue_on_error &&
1272                             td->first_error) {
1273                                 ts->error = td->first_error;
1274                                 strcpy(ts->verror, td->verror);
1275                         } else  if (td->error) {
1276                                 ts->error = td->error;
1277                                 strcpy(ts->verror, td->verror);
1278                         }
1279                 }
1280
1281                 ts->latency_depth = td->latency_qd;
1282                 ts->latency_target = td->o.latency_target;
1283                 ts->latency_percentile = td->o.latency_percentile;
1284                 ts->latency_window = td->o.latency_window;
1285
1286                 sum_thread_stats(ts, &td->ts, idx);
1287         }
1288
1289         for (i = 0; i < nr_ts; i++) {
1290                 unsigned long long bw;
1291
1292                 ts = &threadstats[i];
1293                 rs = &runstats[ts->groupid];
1294                 rs->kb_base = ts->kb_base;
1295                 rs->unit_base = ts->unit_base;
1296                 rs->unified_rw_rep += ts->unified_rw_rep;
1297
1298                 for (j = 0; j < DDIR_RWDIR_CNT; j++) {
1299                         if (!ts->runtime[j])
1300                                 continue;
1301                         if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
1302                                 rs->min_run[j] = ts->runtime[j];
1303                         if (ts->runtime[j] > rs->max_run[j])
1304                                 rs->max_run[j] = ts->runtime[j];
1305
1306                         bw = 0;
1307                         if (ts->runtime[j]) {
1308                                 unsigned long runt = ts->runtime[j];
1309                                 unsigned long long kb;
1310
1311                                 kb = ts->io_bytes[j] / rs->kb_base;
1312                                 bw = kb * 1000 / runt;
1313                         }
1314                         if (bw < rs->min_bw[j])
1315                                 rs->min_bw[j] = bw;
1316                         if (bw > rs->max_bw[j])
1317                                 rs->max_bw[j] = bw;
1318
1319                         rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
1320                 }
1321         }
1322
1323         for (i = 0; i < groupid + 1; i++) {
1324                 int ddir;
1325
1326                 rs = &runstats[i];
1327
1328                 for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
1329                         if (rs->max_run[ddir])
1330                                 rs->agg[ddir] = (rs->io_kb[ddir] * 1000) /
1331                                                 rs->max_run[ddir];
1332                 }
1333         }
1334
1335         /*
1336          * don't overwrite last signal output
1337          */
1338         if (output_format == FIO_OUTPUT_NORMAL)
1339                 log_info("\n");
1340         else if (output_format == FIO_OUTPUT_JSON) {
1341                 root = json_create_object();
1342                 json_object_add_value_string(root, "fio version", fio_version_string);
1343                 array = json_create_array();
1344                 json_object_add_value_array(root, "jobs", array);
1345         }
1346
1347         for (i = 0; i < nr_ts; i++) {
1348                 ts = &threadstats[i];
1349                 rs = &runstats[ts->groupid];
1350
1351                 if (is_backend)
1352                         fio_server_send_ts(ts, rs);
1353                 else if (output_format == FIO_OUTPUT_TERSE)
1354                         show_thread_status_terse(ts, rs);
1355                 else if (output_format == FIO_OUTPUT_JSON) {
1356                         struct json_object *tmp = show_thread_status_json(ts, rs);
1357                         json_array_add_value_object(array, tmp);
1358                 } else
1359                         show_thread_status_normal(ts, rs);
1360         }
1361         if (output_format == FIO_OUTPUT_JSON) {
1362                 /* disk util stats, if any */
1363                 show_disk_util(1, root);
1364
1365                 show_idle_prof_stats(FIO_OUTPUT_JSON, root);
1366
1367                 json_print_object(root);
1368                 log_info("\n");
1369                 json_free_object(root);
1370         }
1371
1372         for (i = 0; i < groupid + 1; i++) {
1373                 rs = &runstats[i];
1374
1375                 rs->groupid = i;
1376                 if (is_backend)
1377                         fio_server_send_gs(rs);
1378                 else if (output_format == FIO_OUTPUT_NORMAL)
1379                         show_group_stats(rs);
1380         }
1381
1382         if (is_backend)
1383                 fio_server_send_du();
1384         else if (output_format == FIO_OUTPUT_NORMAL) {
1385                 show_disk_util(0, NULL);
1386                 show_idle_prof_stats(FIO_OUTPUT_NORMAL, NULL);
1387         }
1388
1389         log_info_flush();
1390         free(runstats);
1391         free(threadstats);
1392 }
1393
1394 void show_run_stats(void)
1395 {
1396         fio_mutex_down(stat_mutex);
1397         __show_run_stats();
1398         fio_mutex_up(stat_mutex);
1399 }
1400
1401 static void *__show_running_run_stats(void fio_unused *arg)
1402 {
1403         struct thread_data *td;
1404         unsigned long long *rt;
1405         struct timeval tv;
1406         int i;
1407
1408         rt = malloc(thread_number * sizeof(unsigned long long));
1409         fio_gettime(&tv, NULL);
1410
1411         for_each_td(td, i) {
1412                 rt[i] = mtime_since(&td->start, &tv);
1413                 if (td_read(td) && td->io_bytes[DDIR_READ])
1414                         td->ts.runtime[DDIR_READ] += rt[i];
1415                 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1416                         td->ts.runtime[DDIR_WRITE] += rt[i];
1417                 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1418                         td->ts.runtime[DDIR_TRIM] += rt[i];
1419
1420                 td->update_rusage = 1;
1421                 td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
1422                 td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
1423                 td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
1424                 td->ts.total_run_time = mtime_since(&td->epoch, &tv);
1425         }
1426
1427         for_each_td(td, i) {
1428                 if (td->rusage_sem) {
1429                         td->update_rusage = 1;
1430                         fio_mutex_down(td->rusage_sem);
1431                 }
1432                 td->update_rusage = 0;
1433         }
1434
1435         __show_run_stats();
1436
1437         for_each_td(td, i) {
1438                 if (td_read(td) && td->io_bytes[DDIR_READ])
1439                         td->ts.runtime[DDIR_READ] -= rt[i];
1440                 if (td_write(td) && td->io_bytes[DDIR_WRITE])
1441                         td->ts.runtime[DDIR_WRITE] -= rt[i];
1442                 if (td_trim(td) && td->io_bytes[DDIR_TRIM])
1443                         td->ts.runtime[DDIR_TRIM] -= rt[i];
1444         }
1445
1446         free(rt);
1447         fio_mutex_up(stat_mutex);
1448         return NULL;
1449 }
1450
1451 /*
1452  * Called from signal handler. It _should_ be safe to just run this inline
1453  * in the sig handler, but we should be disturbing the system less by just
1454  * creating a thread to do it.
1455  */
1456 void show_running_run_stats(void)
1457 {
1458         pthread_t thread;
1459
1460         fio_mutex_down(stat_mutex);
1461
1462         if (!pthread_create(&thread, NULL, __show_running_run_stats, NULL)) {
1463                 pthread_detach(thread);
1464                 return;
1465         }
1466
1467         fio_mutex_up(stat_mutex);
1468 }
1469
1470 static int status_interval_init;
1471 static struct timeval status_time;
1472
1473 #define FIO_STATUS_FILE         "/tmp/fio-dump-status"
1474
1475 static int check_status_file(void)
1476 {
1477         struct stat sb;
1478         const char *temp_dir;
1479         char fio_status_file_path[PATH_MAX];
1480
1481         temp_dir = getenv("TMPDIR");
1482         if (temp_dir == NULL)
1483                 temp_dir = getenv("TEMP");
1484         if (temp_dir == NULL)
1485                 temp_dir = "/tmp";
1486
1487         snprintf(fio_status_file_path, sizeof(fio_status_file_path), "%s/%s", temp_dir, FIO_STATUS_FILE);
1488
1489         if (stat(fio_status_file_path, &sb))
1490                 return 0;
1491
1492         unlink(fio_status_file_path);
1493         return 1;
1494 }
1495
1496 void check_for_running_stats(void)
1497 {
1498         if (status_interval) {
1499                 if (!status_interval_init) {
1500                         fio_gettime(&status_time, NULL);
1501                         status_interval_init = 1;
1502                 } else if (mtime_since_now(&status_time) >= status_interval) {
1503                         show_running_run_stats();
1504                         fio_gettime(&status_time, NULL);
1505                         return;
1506                 }
1507         }
1508         if (check_status_file()) {
1509                 show_running_run_stats();
1510                 return;
1511         }
1512 }
1513
1514 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
1515 {
1516         double val = data;
1517         double delta;
1518
1519         if (data > is->max_val)
1520                 is->max_val = data;
1521         if (data < is->min_val)
1522                 is->min_val = data;
1523
1524         delta = val - is->mean.u.f;
1525         if (delta) {
1526                 is->mean.u.f += delta / (is->samples + 1.0);
1527                 is->S.u.f += delta * (val - is->mean.u.f);
1528         }
1529
1530         is->samples++;
1531 }
1532
1533 static void __add_log_sample(struct io_log *iolog, unsigned long val,
1534                              enum fio_ddir ddir, unsigned int bs,
1535                              unsigned long t)
1536 {
1537         const int nr_samples = iolog->nr_samples;
1538
1539         if (iolog->disabled)
1540                 return;
1541
1542         if (!iolog->nr_samples)
1543                 iolog->avg_last = t;
1544
1545         if (iolog->nr_samples == iolog->max_samples) {
1546                 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
1547                 void *new_log;
1548
1549                 new_log = realloc(iolog->log, new_size);
1550                 if (!new_log) {
1551                         log_err("fio: failed extending iolog! Will stop logging.\n");
1552                         iolog->disabled = 1;
1553                         return;
1554                 }
1555                 iolog->log = new_log;
1556                 iolog->max_samples <<= 1;
1557         }
1558
1559         iolog->log[nr_samples].val = val;
1560         iolog->log[nr_samples].time = t;
1561         iolog->log[nr_samples].ddir = ddir;
1562         iolog->log[nr_samples].bs = bs;
1563         iolog->nr_samples++;
1564 }
1565
1566 static inline void reset_io_stat(struct io_stat *ios)
1567 {
1568         ios->max_val = ios->min_val = ios->samples = 0;
1569         ios->mean.u.f = ios->S.u.f = 0;
1570 }
1571
1572 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
1573                            unsigned long val, enum fio_ddir ddir,
1574                            unsigned int bs)
1575 {
1576         unsigned long elapsed, this_window;
1577
1578         if (!ddir_rw(ddir))
1579                 return;
1580
1581         elapsed = mtime_since_now(&td->epoch);
1582
1583         /*
1584          * If no time averaging, just add the log sample.
1585          */
1586         if (!iolog->avg_msec) {
1587                 __add_log_sample(iolog, val, ddir, bs, elapsed);
1588                 return;
1589         }
1590
1591         /*
1592          * Add the sample. If the time period has passed, then
1593          * add that entry to the log and clear.
1594          */
1595         add_stat_sample(&iolog->avg_window[ddir], val);
1596
1597         /*
1598          * If period hasn't passed, adding the above sample is all we
1599          * need to do.
1600          */
1601         this_window = elapsed - iolog->avg_last;
1602         if (this_window < iolog->avg_msec)
1603                 return;
1604
1605         /*
1606          * Note an entry in the log. Use the mean from the logged samples,
1607          * making sure to properly round up. Only write a log entry if we
1608          * had actual samples done.
1609          */
1610         if (iolog->avg_window[DDIR_READ].samples) {
1611                 unsigned long mr;
1612
1613                 mr = iolog->avg_window[DDIR_READ].mean.u.f + 0.50;
1614                 __add_log_sample(iolog, mr, DDIR_READ, 0, elapsed);
1615         }
1616         if (iolog->avg_window[DDIR_WRITE].samples) {
1617                 unsigned long mw;
1618
1619                 mw = iolog->avg_window[DDIR_WRITE].mean.u.f + 0.50;
1620                 __add_log_sample(iolog, mw, DDIR_WRITE, 0, elapsed);
1621         }
1622         if (iolog->avg_window[DDIR_TRIM].samples) {
1623                 unsigned long mw;
1624
1625                 mw = iolog->avg_window[DDIR_TRIM].mean.u.f + 0.50;
1626                 __add_log_sample(iolog, mw, DDIR_TRIM, 0, elapsed);
1627         }
1628
1629
1630         reset_io_stat(&iolog->avg_window[DDIR_READ]);
1631         reset_io_stat(&iolog->avg_window[DDIR_WRITE]);
1632         reset_io_stat(&iolog->avg_window[DDIR_TRIM]);
1633         iolog->avg_last = elapsed;
1634 }
1635
1636 void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
1637 {
1638         struct io_log *iolog;
1639
1640         if (!ddir_rw(ddir))
1641                 return;
1642
1643         iolog = agg_io_log[ddir];
1644         __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
1645 }
1646
1647 static void add_clat_percentile_sample(struct thread_stat *ts,
1648                                 unsigned long usec, enum fio_ddir ddir)
1649 {
1650         unsigned int idx = plat_val_to_idx(usec);
1651         assert(idx < FIO_IO_U_PLAT_NR);
1652
1653         ts->io_u_plat[ddir][idx]++;
1654 }
1655
1656 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
1657                      unsigned long usec, unsigned int bs)
1658 {
1659         struct thread_stat *ts = &td->ts;
1660
1661         if (!ddir_rw(ddir))
1662                 return;
1663
1664         add_stat_sample(&ts->clat_stat[ddir], usec);
1665
1666         if (td->clat_log)
1667                 add_log_sample(td, td->clat_log, usec, ddir, bs);
1668
1669         if (ts->clat_percentiles)
1670                 add_clat_percentile_sample(ts, usec, ddir);
1671 }
1672
1673 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
1674                      unsigned long usec, unsigned int bs)
1675 {
1676         struct thread_stat *ts = &td->ts;
1677
1678         if (!ddir_rw(ddir))
1679                 return;
1680
1681         add_stat_sample(&ts->slat_stat[ddir], usec);
1682
1683         if (td->slat_log)
1684                 add_log_sample(td, td->slat_log, usec, ddir, bs);
1685 }
1686
1687 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
1688                     unsigned long usec, unsigned int bs)
1689 {
1690         struct thread_stat *ts = &td->ts;
1691
1692         if (!ddir_rw(ddir))
1693                 return;
1694
1695         add_stat_sample(&ts->lat_stat[ddir], usec);
1696
1697         if (td->lat_log)
1698                 add_log_sample(td, td->lat_log, usec, ddir, bs);
1699 }
1700
1701 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
1702                    struct timeval *t)
1703 {
1704         struct thread_stat *ts = &td->ts;
1705         unsigned long spent, rate;
1706
1707         if (!ddir_rw(ddir))
1708                 return;
1709
1710         spent = mtime_since(&td->bw_sample_time, t);
1711         if (spent < td->o.bw_avg_time)
1712                 return;
1713
1714         /*
1715          * Compute both read and write rates for the interval.
1716          */
1717         for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
1718                 uint64_t delta;
1719
1720                 delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir];
1721                 if (!delta)
1722                         continue; /* No entries for interval */
1723
1724                 rate = delta * 1000 / spent / 1024;
1725                 add_stat_sample(&ts->bw_stat[ddir], rate);
1726
1727                 if (td->bw_log)
1728                         add_log_sample(td, td->bw_log, rate, ddir, bs);
1729
1730                 td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
1731         }
1732
1733         fio_gettime(&td->bw_sample_time, NULL);
1734 }
1735
1736 void add_iops_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
1737                      struct timeval *t)
1738 {
1739         struct thread_stat *ts = &td->ts;
1740         unsigned long spent, iops;
1741
1742         if (!ddir_rw(ddir))
1743                 return;
1744
1745         spent = mtime_since(&td->iops_sample_time, t);
1746         if (spent < td->o.iops_avg_time)
1747                 return;
1748
1749         /*
1750          * Compute both read and write rates for the interval.
1751          */
1752         for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
1753                 uint64_t delta;
1754
1755                 delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
1756                 if (!delta)
1757                         continue; /* No entries for interval */
1758
1759                 iops = (delta * 1000) / spent;
1760                 add_stat_sample(&ts->iops_stat[ddir], iops);
1761
1762                 if (td->iops_log)
1763                         add_log_sample(td, td->iops_log, iops, ddir, bs);
1764
1765                 td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
1766         }
1767
1768         fio_gettime(&td->iops_sample_time, NULL);
1769 }
1770
1771 void stat_init(void)
1772 {
1773         stat_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1774 }
1775
1776 void stat_exit(void)
1777 {
1778         /*
1779          * When we have the mutex, we know out-of-band access to it
1780          * have ended.
1781          */
1782         fio_mutex_down(stat_mutex);
1783         fio_mutex_remove(stat_mutex);
1784 }