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
  13 /*
  14  * Cheesy number->string conversion, complete with carry rounding error.
  15  */
  16 static char *num2str(unsigned long num, int maxlen, int base, int pow2)
  17 {
  18         char postfix[] = { ' ', 'K', 'M', 'G', 'P', 'E' };
  19         unsigned int thousand;
  20         char *buf;
  21         int i;
  22
  23         if (pow2)
  24                 thousand = 1024;
  25         else
  26                 thousand = 1000;
  27
  28         buf = malloc(128);
  29
  30         for (i = 0; base > 1; i++)
  31                 base /= thousand;
  32
  33         do {
  34                 int len, carry = 0;
  35
  36                 len = sprintf(buf, "%'lu", num);
  37                 if (len <= maxlen) {
  38                         if (i >= 1) {
  39                                 buf[len] = postfix[i];
  40                                 buf[len + 1] = '\0';
  41                         }
  42                         return buf;
  43                 }
  44
  45                 if ((num % thousand) >= (thousand / 2))
  46                         carry = 1;
  47
  48                 num /= thousand;
  49                 num += carry;
  50                 i++;
  51         } while (i <= 5);
  52
  53         return buf;
  54 }
  55
  56 void update_rusage_stat(struct thread_data *td)
  57 {
  58         struct thread_stat *ts = &td->ts;
  59
  60         getrusage(RUSAGE_SELF, &ts->ru_end);
  61
  62         ts->usr_time += mtime_since(&ts->ru_start.ru_utime,
  63                                         &ts->ru_end.ru_utime);
  64         ts->sys_time += mtime_since(&ts->ru_start.ru_stime,
  65                                         &ts->ru_end.ru_stime);
  66         ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw
  67                         - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
  68         ts->minf += ts->ru_end.ru_minflt - ts->ru_start.ru_minflt;
  69         ts->majf += ts->ru_end.ru_majflt - ts->ru_start.ru_majflt;
  70
  71         memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
  72 }
  73
  74 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
  75                     double *mean, double *dev)
  76 {
  77         double n = is->samples;
  78
  79         if (is->samples == 0)
  80                 return 0;
  81
  82         *min = is->min_val;
  83         *max = is->max_val;
  84
  85         n = (double) is->samples;
  86         *mean = is->mean;
  87
  88         if (n > 1.0)
  89                 *dev = sqrt(is->S / (n - 1.0));
  90         else
  91                 *dev = 0;
  92
  93         return 1;
  94 }
  95
  96 static void show_group_stats(struct group_run_stats *rs, int id)
  97 {
  98         char *p1, *p2, *p3, *p4;
  99         const char *ddir_str[] = { "   READ", "  WRITE" };
 100         int i;
 101
 102         log_info("\nRun status group %d (all jobs):\n", id);
 103
 104         for (i = 0; i <= DDIR_WRITE; i++) {
 105                 if (!rs->max_run[i])
 106                         continue;
 107
 108                 p1 = num2str(rs->io_kb[i], 6, 1024, 1);
 109                 p2 = num2str(rs->agg[i], 6, 1024, 1);
 110                 p3 = num2str(rs->min_bw[i], 6, 1024, 1);
 111                 p4 = num2str(rs->max_bw[i], 6, 1024, 1);
 112
 113                 log_info("%s: io=%siB, aggrb=%siB/s, minb=%siB/s, maxb=%siB/s,"
 114                          " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2,
 115                                                 p3, p4, rs->min_run[i],
 116                                                 rs->max_run[i]);
 117
 118                 free(p1);
 119                 free(p2);
 120                 free(p3);
 121                 free(p4);
 122         }
 123 }
 124
 125 #define ts_total_io_u(ts)       \
 126         ((ts)->total_io_u[0] + (ts)->total_io_u[1])
 127
 128 static void stat_calc_dist(unsigned int *map, unsigned long total,
 129                            double *io_u_dist)
 130 {
 131         int i;
 132
 133         /*
 134          * Do depth distribution calculations
 135          */
 136         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 137                 if (total) {
 138                         io_u_dist[i] = (double) map[i] / (double) total;
 139                         io_u_dist[i] *= 100.0;
 140                         if (io_u_dist[i] < 0.1 && map[i])
 141                                 io_u_dist[i] = 0.1;
 142                 } else
 143                         io_u_dist[i] = 0.0;
 144         }
 145 }
 146
 147 static void stat_calc_lat(struct thread_stat *ts, double *dst,
 148                           unsigned int *src, int nr)
 149 {
 150         unsigned long total = ts_total_io_u(ts);
 151         int i;
 152
 153         /*
 154          * Do latency distribution calculations
 155          */
 156         for (i = 0; i < nr; i++) {
 157                 if (total) {
 158                         dst[i] = (double) src[i] / (double) total;
 159                         dst[i] *= 100.0;
 160                         if (dst[i] < 0.01 && src[i])
 161                                 dst[i] = 0.01;
 162                 } else
 163                         dst[i] = 0.0;
 164         }
 165 }
 166
 167 static void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 168 {
 169         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
 170 }
 171
 172 static void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
 173 {
 174         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 175 }
 176
 177 static int usec_to_msec(unsigned long *min, unsigned long *max, double *mean,
 178                         double *dev)
 179 {
 180         if (*min > 1000 && *max > 1000 && *mean > 1000.0 && *dev > 1000.0) {
 181                 *min /= 1000;
 182                 *max /= 1000;
 183                 *mean /= 1000.0;
 184                 *dev /= 1000.0;
 185                 return 0;
 186         }
 187
 188         return 1;
 189 }
 190
 191 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
 192                              int ddir)
 193 {
 194         const char *ddir_str[] = { "read ", "write" };
 195         unsigned long min, max, runt;
 196         unsigned long long bw, iops;
 197         double mean, dev;
 198         char *io_p, *bw_p, *iops_p;
 199
 200         if (!ts->runtime[ddir])
 201                 return;
 202
 203         runt = ts->runtime[ddir];
 204
 205         bw = (1000 * ts->io_bytes[ddir]) / runt;
 206         io_p = num2str(ts->io_bytes[ddir] >> 10, 6, 1024, 1);
 207         bw_p = num2str(bw >> 10, 6, 1024, 1);
 208
 209         iops = (1000 * ts->total_io_u[ddir]) / runt;
 210         iops_p = num2str(iops, 6, 1, 0);
 211
 212         log_info("  %s: io=%siB, bw=%siB/s, iops=%s, runt=%6lumsec\n",
 213                                         ddir_str[ddir], io_p, bw_p, iops_p,
 214                                         ts->runtime[ddir]);
 215
 216         free(io_p);
 217         free(bw_p);
 218         free(iops_p);
 219
 220         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
 221                 const char *base = "(usec)";
 222                 char *minp, *maxp;
 223
 224                 if (!usec_to_msec(&min, &max, &mean, &dev))
 225                         base = "(msec)";
 226
 227                 minp = num2str(min, 6, 1, 0);
 228                 maxp = num2str(max, 6, 1, 0);
 229
 230                 log_info("    slat %s: min=%s, max=%s, avg=%5.02f,"
 231                          " stdev=%5.02f\n", base, minp, maxp, mean, dev);
 232
 233                 free(minp);
 234                 free(maxp);
 235         }
 236         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
 237                 const char *base = "(usec)";
 238                 char *minp, *maxp;
 239
 240                 if (!usec_to_msec(&min, &max, &mean, &dev))
 241                         base = "(msec)";
 242
 243                 minp = num2str(min, 6, 1, 0);
 244                 maxp = num2str(max, 6, 1, 0);
 245
 246                 log_info("    clat %s: min=%s, max=%s, avg=%5.02f,"
 247                          " stdev=%5.02f\n", base, minp, maxp, mean, dev);
 248
 249                 free(minp);
 250                 free(maxp);
 251         }
 252         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 253                 double p_of_agg;
 254
 255                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 256                 log_info("    bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%,"
 257                          " avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg,
 258                                                         mean, dev);
 259         }
 260 }
 261
 262 static void show_lat(double *io_u_lat, int nr, const char **ranges,
 263                      const char *msg)
 264 {
 265         int new_line = 1, i, line = 0;
 266
 267         for (i = 0; i < nr; i++) {
 268                 if (io_u_lat[i] <= 0.0)
 269                         continue;
 270                 if (new_line) {
 271                         if (line)
 272                                 log_info("\n");
 273                         log_info("     lat (%s): ", msg);
 274                         new_line = 0;
 275                         line = 0;
 276                 }
 277                 if (line)
 278                         log_info(", ");
 279                 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
 280                 line++;
 281                 if (line == 5)
 282                         new_line = 1;
 283         }
 284 }
 285
 286 static void show_lat_u(double *io_u_lat_u)
 287 {
 288         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 289                                  "250=", "500=", "750=", "1000=", };
 290
 291         show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
 292 }
 293
 294 static void show_lat_m(double *io_u_lat_m)
 295 {
 296         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 297                                  "250=", "500=", "750=", "1000=", "2000=",
 298                                  ">=2000=", };
 299
 300         show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
 301 }
 302
 303 static void show_latencies(double *io_u_lat_u, double *io_u_lat_m)
 304 {
 305         show_lat_u(io_u_lat_u);
 306         log_info("\n");
 307         show_lat_m(io_u_lat_m);
 308         log_info("\n");
 309 }
 310
 311 static void show_thread_status(struct thread_stat *ts,
 312                                struct group_run_stats *rs)
 313 {
 314         double usr_cpu, sys_cpu;
 315         unsigned long runtime;
 316         double io_u_dist[FIO_IO_U_MAP_NR];
 317         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 318         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 319
 320         if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
 321             !(ts->total_io_u[0] + ts->total_io_u[1]))
 322                 return;
 323
 324         if (!ts->error) {
 325                 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n",
 326                                         ts->name, ts->groupid, ts->members,
 327                                         ts->error, (int) ts->pid);
 328         } else {
 329                 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n",
 330                                         ts->name, ts->groupid, ts->members,
 331                                         ts->error, ts->verror, (int) ts->pid);
 332         }
 333
 334         if (ts->description)
 335                 log_info("  Description  : [%s]\n", ts->description);
 336
 337         if (ts->io_bytes[DDIR_READ])
 338                 show_ddir_status(rs, ts, DDIR_READ);
 339         if (ts->io_bytes[DDIR_WRITE])
 340                 show_ddir_status(rs, ts, DDIR_WRITE);
 341
 342         runtime = ts->total_run_time;
 343         if (runtime) {
 344                 double runt = (double) runtime;
 345
 346                 usr_cpu = (double) ts->usr_time * 100 / runt;
 347                 sys_cpu = (double) ts->sys_time * 100 / runt;
 348         } else {
 349                 usr_cpu = 0;
 350                 sys_cpu = 0;
 351         }
 352
 353         log_info("  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
 354                  " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
 355
 356         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 357         log_info("  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
 358                  " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 359                                         io_u_dist[1], io_u_dist[2],
 360                                         io_u_dist[3], io_u_dist[4],
 361                                         io_u_dist[5], io_u_dist[6]);
 362
 363         stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
 364         log_info("     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 365                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 366                                         io_u_dist[1], io_u_dist[2],
 367                                         io_u_dist[3], io_u_dist[4],
 368                                         io_u_dist[5], io_u_dist[6]);
 369         stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
 370         log_info("     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 371                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 372                                         io_u_dist[1], io_u_dist[2],
 373                                         io_u_dist[3], io_u_dist[4],
 374                                         io_u_dist[5], io_u_dist[6]);
 375         log_info("     issued r/w: total=%lu/%lu, short=%lu/%lu\n",
 376                                         ts->total_io_u[0], ts->total_io_u[1],
 377                                         ts->short_io_u[0], ts->short_io_u[1]);
 378         stat_calc_lat_u(ts, io_u_lat_u);
 379         stat_calc_lat_m(ts, io_u_lat_m);
 380         show_latencies(io_u_lat_u, io_u_lat_m);
 381 }
 382
 383 static void show_ddir_status_terse(struct thread_stat *ts,
 384                                    struct group_run_stats *rs, int ddir)
 385 {
 386         unsigned long min, max;
 387         unsigned long long bw;
 388         double mean, dev;
 389
 390         bw = 0;
 391         if (ts->runtime[ddir])
 392                 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
 393
 394         log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw,
 395                                                         ts->runtime[ddir]);
 396
 397         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 398                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 399         else
 400                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 401
 402         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 403                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 404         else
 405                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 406
 407         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 408                 double p_of_agg;
 409
 410                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 411                 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
 412         } else
 413                 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
 414 }
 415
 416
 417 static void show_thread_status_terse(struct thread_stat *ts,
 418                                      struct group_run_stats *rs)
 419 {
 420         double io_u_dist[FIO_IO_U_MAP_NR];
 421         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 422         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 423         double usr_cpu, sys_cpu;
 424         int i;
 425
 426         log_info("%s;%d;%d", ts->name, ts->groupid, ts->error);
 427
 428         show_ddir_status_terse(ts, rs, 0);
 429         show_ddir_status_terse(ts, rs, 1);
 430
 431         if (ts->total_run_time) {
 432                 double runt = (double) ts->total_run_time;
 433
 434                 usr_cpu = (double) ts->usr_time * 100 / runt;
 435                 sys_cpu = (double) ts->sys_time * 100 / runt;
 436         } else {
 437                 usr_cpu = 0;
 438                 sys_cpu = 0;
 439         }
 440
 441         log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
 442                                                                 ts->minf);
 443
 444         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 445         stat_calc_lat_u(ts, io_u_lat_u);
 446         stat_calc_lat_m(ts, io_u_lat_m);
 447
 448         log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
 449                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
 450                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
 451
 452         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
 453                 log_info(";%3.2f%%", io_u_lat_u[i]);
 454         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
 455                 log_info(";%3.2f%%", io_u_lat_m[i]);
 456         log_info("\n");
 457
 458         if (ts->description)
 459                 log_info(";%s", ts->description);
 460
 461         log_info("\n");
 462 }
 463
 464 static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
 465 {
 466         double mean, S;
 467
 468         dst->min_val = min(dst->min_val, src->min_val);
 469         dst->max_val = max(dst->max_val, src->max_val);
 470         dst->samples += src->samples;
 471
 472         /*
 473          * Needs a new method for calculating stddev, we cannot just
 474          * average them we do below for nr > 1
 475          */
 476         if (nr == 1) {
 477                 mean = src->mean;
 478                 S = src->S;
 479         } else {
 480                 mean = ((src->mean * (double) (nr - 1))
 481                                 + dst->mean) / ((double) nr);
 482                 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr);
 483         }
 484
 485         dst->mean = mean;
 486         dst->S = S;
 487 }
 488
 489 void show_run_stats(void)
 490 {
 491         struct group_run_stats *runstats, *rs;
 492         struct thread_data *td;
 493         struct thread_stat *threadstats, *ts;
 494         int i, j, k, l, nr_ts, last_ts, idx;
 495
 496         runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
 497
 498         for (i = 0; i < groupid + 1; i++) {
 499                 rs = &runstats[i];
 500
 501                 memset(rs, 0, sizeof(*rs));
 502                 rs->min_bw[0] = rs->min_run[0] = ~0UL;
 503                 rs->min_bw[1] = rs->min_run[1] = ~0UL;
 504         }
 505
 506         /*
 507          * find out how many threads stats we need. if group reporting isn't
 508          * enabled, it's one-per-td.
 509          */
 510         nr_ts = 0;
 511         last_ts = -1;
 512         for_each_td(td, i) {
 513                 if (!td->o.group_reporting) {
 514                         nr_ts++;
 515                         continue;
 516                 }
 517                 if (last_ts == td->groupid)
 518                         continue;
 519
 520                 last_ts = td->groupid;
 521                 nr_ts++;
 522         }
 523
 524         threadstats = malloc(nr_ts * sizeof(struct thread_stat));
 525
 526         for (i = 0; i < nr_ts; i++) {
 527                 ts = &threadstats[i];
 528
 529                 memset(ts, 0, sizeof(*ts));
 530                 for (j = 0; j <= DDIR_WRITE; j++) {
 531                         ts->clat_stat[j].min_val = -1UL;
 532                         ts->slat_stat[j].min_val = -1UL;
 533                         ts->bw_stat[j].min_val = -1UL;
 534                 }
 535                 ts->groupid = -1;
 536         }
 537
 538         j = 0;
 539         last_ts = -1;
 540         idx = 0;
 541         for_each_td(td, i) {
 542                 if (idx && (!td->o.group_reporting ||
 543                     (td->o.group_reporting && last_ts != td->groupid))) {
 544                         idx = 0;
 545                         j++;
 546                 }
 547
 548                 last_ts = td->groupid;
 549
 550                 ts = &threadstats[j];
 551
 552                 idx++;
 553                 ts->members++;
 554
 555                 if (ts->groupid == -1) {
 556                         /*
 557                          * These are per-group shared already
 558                          */
 559                         ts->name = td->o.name;
 560                         ts->description = td->o.description;
 561                         ts->groupid = td->groupid;
 562
 563                         /*
 564                          * first pid in group, not very useful...
 565                          */
 566                         ts->pid = td->pid;
 567                 }
 568
 569                 if (td->error && !ts->error) {
 570                         ts->error = td->error;
 571                         ts->verror = td->verror;
 572                 }
 573
 574                 for (l = 0; l <= DDIR_WRITE; l++) {
 575                         sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx);
 576                         sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx);
 577                         sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx);
 578
 579                         ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l];
 580                         ts->io_bytes[l] += td->ts.io_bytes[l];
 581
 582                         if (ts->runtime[l] < td->ts.runtime[l])
 583                                 ts->runtime[l] = td->ts.runtime[l];
 584                 }
 585
 586                 ts->usr_time += td->ts.usr_time;
 587                 ts->sys_time += td->ts.sys_time;
 588                 ts->ctx += td->ts.ctx;
 589                 ts->majf += td->ts.majf;
 590                 ts->minf += td->ts.minf;
 591
 592                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 593                         ts->io_u_map[k] += td->ts.io_u_map[k];
 594                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 595                         ts->io_u_submit[k] += td->ts.io_u_submit[k];
 596                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 597                         ts->io_u_complete[k] += td->ts.io_u_complete[k];
 598                 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
 599                         ts->io_u_lat_u[k] += td->ts.io_u_lat_u[k];
 600                 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
 601                         ts->io_u_lat_m[k] += td->ts.io_u_lat_m[k];
 602
 603
 604                 for (k = 0; k <= DDIR_WRITE; k++) {
 605                         ts->total_io_u[k] += td->ts.total_io_u[k];
 606                         ts->short_io_u[k] += td->ts.short_io_u[k];
 607                 }
 608
 609                 ts->total_run_time += td->ts.total_run_time;
 610                 ts->total_submit += td->ts.total_submit;
 611                 ts->total_complete += td->ts.total_complete;
 612         }
 613
 614         for (i = 0; i < nr_ts; i++) {
 615                 unsigned long long bw;
 616
 617                 ts = &threadstats[i];
 618                 rs = &runstats[ts->groupid];
 619
 620                 for (j = 0; j <= DDIR_WRITE; j++) {
 621                         if (!ts->runtime[j])
 622                                 continue;
 623                         if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
 624                                 rs->min_run[j] = ts->runtime[j];
 625                         if (ts->runtime[j] > rs->max_run[j])
 626                                 rs->max_run[j] = ts->runtime[j];
 627
 628                         bw = 0;
 629                         if (ts->runtime[j]) {
 630                                 unsigned long runt;
 631
 632                                 runt = ts->runtime[j] * 1024 / 1000;
 633                                 bw = ts->io_bytes[j] / runt;
 634                         }
 635                         if (bw < rs->min_bw[j])
 636                                 rs->min_bw[j] = bw;
 637                         if (bw > rs->max_bw[j])
 638                                 rs->max_bw[j] = bw;
 639
 640                         rs->io_kb[j] += ts->io_bytes[j] >> 10;
 641                 }
 642         }
 643
 644         for (i = 0; i < groupid + 1; i++) {
 645                 unsigned long max_run[2];
 646
 647                 rs = &runstats[i];
 648                 max_run[0] = rs->max_run[0] * 1024 / 1000;
 649                 max_run[1] = rs->max_run[1] * 1024 / 1000;
 650
 651                 if (rs->max_run[0])
 652                         rs->agg[0] = (rs->io_kb[0]*1024) / max_run[0];
 653                 if (rs->max_run[1])
 654                         rs->agg[1] = (rs->io_kb[1]*1024) / max_run[1];
 655         }
 656
 657         /*
 658          * don't overwrite last signal output
 659          */
 660         if (!terse_output)
 661                 printf("\n");
 662
 663         for (i = 0; i < nr_ts; i++) {
 664                 ts = &threadstats[i];
 665                 rs = &runstats[ts->groupid];
 666
 667                 if (terse_output)
 668                         show_thread_status_terse(ts, rs);
 669                 else
 670                         show_thread_status(ts, rs);
 671         }
 672
 673         if (!terse_output) {
 674                 for (i = 0; i < groupid + 1; i++)
 675                         show_group_stats(&runstats[i], i);
 676
 677                 show_disk_util();
 678         }
 679
 680         free(runstats);
 681         free(threadstats);
 682 }
 683
 684 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
 685 {
 686         double val = data;
 687         double delta;
 688
 689         if (data > is->max_val)
 690                 is->max_val = data;
 691         if (data < is->min_val)
 692                 is->min_val = data;
 693
 694         delta = val - is->mean;
 695         if (delta) {
 696                 is->mean += delta / (is->samples + 1.0);
 697                 is->S += delta * (val - is->mean);
 698         }
 699
 700         is->samples++;
 701 }
 702
 703 static void __add_log_sample(struct io_log *iolog, unsigned long val,
 704                              enum fio_ddir ddir, unsigned int bs,
 705                              unsigned long time)
 706 {
 707         const int nr_samples = iolog->nr_samples;
 708
 709         if (iolog->nr_samples == iolog->max_samples) {
 710                 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
 711
 712                 iolog->log = realloc(iolog->log, new_size);
 713                 iolog->max_samples <<= 1;
 714         }
 715
 716         iolog->log[nr_samples].val = val;
 717         iolog->log[nr_samples].time = time;
 718         iolog->log[nr_samples].ddir = ddir;
 719         iolog->log[nr_samples].bs = bs;
 720         iolog->nr_samples++;
 721 }
 722
 723 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
 724                            unsigned long val, enum fio_ddir ddir,
 725                            unsigned int bs)
 726 {
 727         __add_log_sample(iolog, val, ddir, bs, mtime_since_now(&td->epoch));
 728 }
 729
 730 void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
 731 {
 732         struct io_log *iolog = agg_io_log[ddir];
 733
 734         __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
 735 }
 736
 737 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
 738                      unsigned long usec, unsigned int bs)
 739 {
 740         struct thread_stat *ts = &td->ts;
 741
 742         add_stat_sample(&ts->clat_stat[ddir], usec);
 743
 744         if (ts->clat_log)
 745                 add_log_sample(td, ts->clat_log, usec, ddir, bs);
 746 }
 747
 748 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
 749                      unsigned long usec, unsigned int bs)
 750 {
 751         struct thread_stat *ts = &td->ts;
 752
 753         add_stat_sample(&ts->slat_stat[ddir], usec);
 754
 755         if (ts->slat_log)
 756                 add_log_sample(td, ts->slat_log, usec, ddir, bs);
 757 }
 758
 759 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
 760                    struct timeval *t)
 761 {
 762         struct thread_stat *ts = &td->ts;
 763         unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
 764         unsigned long rate;
 765
 766         if (spent < td->o.bw_avg_time)
 767                 return;
 768
 769         rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) * 1000 / spent / 1024;
 770         add_stat_sample(&ts->bw_stat[ddir], rate);
 771
 772         if (ts->bw_log)
 773                 add_log_sample(td, ts->bw_log, rate, ddir, bs);
 774
 775         fio_gettime(&ts->stat_sample_time[ddir], NULL);
 776         ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
 777 }