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 void update_rusage_stat(struct thread_data *td)
  14 {
  15         struct thread_stat *ts = &td->ts;
  16
  17         getrusage(RUSAGE_SELF, &ts->ru_end);
  18
  19         ts->usr_time += mtime_since(&ts->ru_start.ru_utime,
  20                                         &ts->ru_end.ru_utime);
  21         ts->sys_time += mtime_since(&ts->ru_start.ru_stime,
  22                                         &ts->ru_end.ru_stime);
  23         ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw
  24                         - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
  25         ts->minf += ts->ru_end.ru_minflt - ts->ru_start.ru_minflt;
  26         ts->majf += ts->ru_end.ru_majflt - ts->ru_start.ru_majflt;
  27
  28         memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
  29 }
  30
  31 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
  32                     double *mean, double *dev)
  33 {
  34         double n = is->samples;
  35
  36         if (is->samples == 0)
  37                 return 0;
  38
  39         *min = is->min_val;
  40         *max = is->max_val;
  41
  42         n = (double) is->samples;
  43         *mean = is->mean;
  44
  45         if (n > 1.0)
  46                 *dev = sqrt(is->S / (n - 1.0));
  47         else
  48                 *dev = 0;
  49
  50         return 1;
  51 }
  52
  53 static void show_group_stats(struct group_run_stats *rs, int id)
  54 {
  55         char *p1, *p2, *p3, *p4;
  56         const char *ddir_str[] = { "   READ", "  WRITE" };
  57         int i;
  58
  59         log_info("\nRun status group %d (all jobs):\n", id);
  60
  61         for (i = 0; i <= DDIR_WRITE; i++) {
  62                 const int i2p = is_power_of_2(rs->kb_base);
  63
  64                 if (!rs->max_run[i])
  65                         continue;
  66
  67                 p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p);
  68                 p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p);
  69                 p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p);
  70                 p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p);
  71
  72                 log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s,"
  73                          " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2,
  74                                                 p3, p4, rs->min_run[i],
  75                                                 rs->max_run[i]);
  76
  77                 free(p1);
  78                 free(p2);
  79                 free(p3);
  80                 free(p4);
  81         }
  82 }
  83
  84 #define ts_total_io_u(ts)       \
  85         ((ts)->total_io_u[0] + (ts)->total_io_u[1])
  86
  87 static void stat_calc_dist(unsigned int *map, unsigned long total,
  88                            double *io_u_dist)
  89 {
  90         int i;
  91
  92         /*
  93          * Do depth distribution calculations
  94          */
  95         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
  96                 if (total) {
  97                         io_u_dist[i] = (double) map[i] / (double) total;
  98                         io_u_dist[i] *= 100.0;
  99                         if (io_u_dist[i] < 0.1 && map[i])
 100                                 io_u_dist[i] = 0.1;
 101                 } else
 102                         io_u_dist[i] = 0.0;
 103         }
 104 }
 105
 106 static void stat_calc_lat(struct thread_stat *ts, double *dst,
 107                           unsigned int *src, int nr)
 108 {
 109         unsigned long total = ts_total_io_u(ts);
 110         int i;
 111
 112         /*
 113          * Do latency distribution calculations
 114          */
 115         for (i = 0; i < nr; i++) {
 116                 if (total) {
 117                         dst[i] = (double) src[i] / (double) total;
 118                         dst[i] *= 100.0;
 119                         if (dst[i] < 0.01 && src[i])
 120                                 dst[i] = 0.01;
 121                 } else
 122                         dst[i] = 0.0;
 123         }
 124 }
 125
 126 static void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 127 {
 128         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
 129 }
 130
 131 static void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
 132 {
 133         stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 134 }
 135
 136 static int usec_to_msec(unsigned long *min, unsigned long *max, double *mean,
 137                         double *dev)
 138 {
 139         if (*min > 1000 && *max > 1000 && *mean > 1000.0 && *dev > 1000.0) {
 140                 *min /= 1000;
 141                 *max /= 1000;
 142                 *mean /= 1000.0;
 143                 *dev /= 1000.0;
 144                 return 0;
 145         }
 146
 147         return 1;
 148 }
 149
 150 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
 151                              int ddir)
 152 {
 153         const char *ddir_str[] = { "read ", "write" };
 154         unsigned long min, max, runt;
 155         unsigned long long bw, iops;
 156         double mean, dev;
 157         char *io_p, *bw_p, *iops_p;
 158         int i2p;
 159
 160         if (!ts->runtime[ddir])
 161                 return;
 162
 163         i2p = is_power_of_2(rs->kb_base);
 164         runt = ts->runtime[ddir];
 165
 166         bw = (1000 * ts->io_bytes[ddir]) / runt;
 167         io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p);
 168         bw_p = num2str(bw, 6, 1, i2p);
 169
 170         iops = (1000 * ts->total_io_u[ddir]) / runt;
 171         iops_p = num2str(iops, 6, 1, 0);
 172
 173         log_info("  %s: io=%sB, bw=%sB/s, iops=%s, runt=%6lumsec\n",
 174                                         ddir_str[ddir], io_p, bw_p, iops_p,
 175                                         ts->runtime[ddir]);
 176
 177         free(io_p);
 178         free(bw_p);
 179         free(iops_p);
 180
 181         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
 182                 const char *base = "(usec)";
 183                 char *minp, *maxp;
 184
 185                 if (!usec_to_msec(&min, &max, &mean, &dev))
 186                         base = "(msec)";
 187
 188                 minp = num2str(min, 6, 1, 0);
 189                 maxp = num2str(max, 6, 1, 0);
 190
 191                 log_info("    slat %s: min=%s, max=%s, avg=%5.02f,"
 192                          " stdev=%5.02f\n", base, minp, maxp, mean, dev);
 193
 194                 free(minp);
 195                 free(maxp);
 196         }
 197         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
 198                 const char *base = "(usec)";
 199                 char *minp, *maxp;
 200
 201                 if (!usec_to_msec(&min, &max, &mean, &dev))
 202                         base = "(msec)";
 203
 204                 minp = num2str(min, 6, 1, 0);
 205                 maxp = num2str(max, 6, 1, 0);
 206
 207                 log_info("    clat %s: min=%s, max=%s, avg=%5.02f,"
 208                          " stdev=%5.02f\n", base, minp, maxp, mean, dev);
 209
 210                 free(minp);
 211                 free(maxp);
 212         }
 213         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
 214                 const char *base = "(usec)";
 215                 char *minp, *maxp;
 216
 217                 if (!usec_to_msec(&min, &max, &mean, &dev))
 218                         base = "(msec)";
 219
 220                 minp = num2str(min, 6, 1, 0);
 221                 maxp = num2str(max, 6, 1, 0);
 222
 223                 log_info("     lat %s: min=%s, max=%s, avg=%5.02f,"
 224                          " stdev=%5.02f\n", base, minp, maxp, mean, dev);
 225
 226                 free(minp);
 227                 free(maxp);
 228         }
 229         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 230                 double p_of_agg;
 231
 232                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 233                 log_info("    bw (KB/s) : min=%5lu, max=%5lu, per=%3.2f%%,"
 234                          " avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg,
 235                                                         mean, dev);
 236         }
 237 }
 238
 239 static void show_lat(double *io_u_lat, int nr, const char **ranges,
 240                      const char *msg)
 241 {
 242         int new_line = 1, i, line = 0;
 243
 244         for (i = 0; i < nr; i++) {
 245                 if (io_u_lat[i] <= 0.0)
 246                         continue;
 247                 if (new_line) {
 248                         if (line)
 249                                 log_info("\n");
 250                         log_info("     lat (%s): ", msg);
 251                         new_line = 0;
 252                         line = 0;
 253                 }
 254                 if (line)
 255                         log_info(", ");
 256                 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
 257                 line++;
 258                 if (line == 5)
 259                         new_line = 1;
 260         }
 261 }
 262
 263 static void show_lat_u(double *io_u_lat_u)
 264 {
 265         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 266                                  "250=", "500=", "750=", "1000=", };
 267
 268         show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
 269 }
 270
 271 static void show_lat_m(double *io_u_lat_m)
 272 {
 273         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 274                                  "250=", "500=", "750=", "1000=", "2000=",
 275                                  ">=2000=", };
 276
 277         show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
 278 }
 279
 280 static void show_latencies(double *io_u_lat_u, double *io_u_lat_m)
 281 {
 282         show_lat_u(io_u_lat_u);
 283         log_info("\n");
 284         show_lat_m(io_u_lat_m);
 285         log_info("\n");
 286 }
 287
 288 static void show_thread_status(struct thread_stat *ts,
 289                                struct group_run_stats *rs)
 290 {
 291         double usr_cpu, sys_cpu;
 292         unsigned long runtime;
 293         double io_u_dist[FIO_IO_U_MAP_NR];
 294         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 295         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 296
 297         if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
 298             !(ts->total_io_u[0] + ts->total_io_u[1]))
 299                 return;
 300
 301         if (!ts->error) {
 302                 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n",
 303                                         ts->name, ts->groupid, ts->members,
 304                                         ts->error, (int) ts->pid);
 305         } else {
 306                 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n",
 307                                         ts->name, ts->groupid, ts->members,
 308                                         ts->error, ts->verror, (int) ts->pid);
 309         }
 310
 311         if (ts->description)
 312                 log_info("  Description  : [%s]\n", ts->description);
 313
 314         if (ts->io_bytes[DDIR_READ])
 315                 show_ddir_status(rs, ts, DDIR_READ);
 316         if (ts->io_bytes[DDIR_WRITE])
 317                 show_ddir_status(rs, ts, DDIR_WRITE);
 318
 319         runtime = ts->total_run_time;
 320         if (runtime) {
 321                 double runt = (double) runtime;
 322
 323                 usr_cpu = (double) ts->usr_time * 100 / runt;
 324                 sys_cpu = (double) ts->sys_time * 100 / runt;
 325         } else {
 326                 usr_cpu = 0;
 327                 sys_cpu = 0;
 328         }
 329
 330         log_info("  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
 331                  " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
 332
 333         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 334         log_info("  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
 335                  " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 336                                         io_u_dist[1], io_u_dist[2],
 337                                         io_u_dist[3], io_u_dist[4],
 338                                         io_u_dist[5], io_u_dist[6]);
 339
 340         stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
 341         log_info("     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 342                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 343                                         io_u_dist[1], io_u_dist[2],
 344                                         io_u_dist[3], io_u_dist[4],
 345                                         io_u_dist[5], io_u_dist[6]);
 346         stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
 347         log_info("     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 348                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 349                                         io_u_dist[1], io_u_dist[2],
 350                                         io_u_dist[3], io_u_dist[4],
 351                                         io_u_dist[5], io_u_dist[6]);
 352         log_info("     issued r/w: total=%lu/%lu, short=%lu/%lu\n",
 353                                         ts->total_io_u[0], ts->total_io_u[1],
 354                                         ts->short_io_u[0], ts->short_io_u[1]);
 355         stat_calc_lat_u(ts, io_u_lat_u);
 356         stat_calc_lat_m(ts, io_u_lat_m);
 357         show_latencies(io_u_lat_u, io_u_lat_m);
 358         if (ts->continue_on_error) {
 359                 log_info("     errors    : total=%lu, first_error=%d/<%s>\n",
 360                                         ts->total_err_count,
 361                                         ts->first_error,
 362                                         strerror(ts->first_error));
 363         }
 364 }
 365
 366 static void show_ddir_status_terse(struct thread_stat *ts,
 367                                    struct group_run_stats *rs, int ddir)
 368 {
 369         unsigned long min, max;
 370         unsigned long long bw;
 371         double mean, dev;
 372
 373         bw = 0;
 374         if (ts->runtime[ddir])
 375                 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
 376
 377         log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw,
 378                                                         ts->runtime[ddir]);
 379
 380         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 381                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 382         else
 383                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 384
 385         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 386                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 387         else
 388                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 389
 390         if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
 391                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 392         else
 393                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 394
 395         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 396                 double p_of_agg;
 397
 398                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 399                 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
 400         } else
 401                 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
 402 }
 403
 404
 405 static void show_thread_status_terse(struct thread_stat *ts,
 406                                      struct group_run_stats *rs)
 407 {
 408         double io_u_dist[FIO_IO_U_MAP_NR];
 409         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 410         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 411         double usr_cpu, sys_cpu;
 412         int i;
 413
 414         log_info("%s;%d;%d", ts->name, ts->groupid, ts->error);
 415
 416         show_ddir_status_terse(ts, rs, 0);
 417         show_ddir_status_terse(ts, rs, 1);
 418
 419         if (ts->total_run_time) {
 420                 double runt = (double) ts->total_run_time;
 421
 422                 usr_cpu = (double) ts->usr_time * 100 / runt;
 423                 sys_cpu = (double) ts->sys_time * 100 / runt;
 424         } else {
 425                 usr_cpu = 0;
 426                 sys_cpu = 0;
 427         }
 428
 429         log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
 430                                                                 ts->minf);
 431
 432         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 433         stat_calc_lat_u(ts, io_u_lat_u);
 434         stat_calc_lat_m(ts, io_u_lat_m);
 435
 436         log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
 437                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
 438                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
 439
 440         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
 441                 log_info(";%3.2f%%", io_u_lat_u[i]);
 442         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
 443                 log_info(";%3.2f%%", io_u_lat_m[i]);
 444         if (ts->continue_on_error)
 445                 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
 446         log_info("\n");
 447
 448         if (ts->description)
 449                 log_info(";%s", ts->description);
 450
 451         log_info("\n");
 452 }
 453
 454 static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
 455 {
 456         double mean, S;
 457
 458         dst->min_val = min(dst->min_val, src->min_val);
 459         dst->max_val = max(dst->max_val, src->max_val);
 460         dst->samples += src->samples;
 461
 462         /*
 463          * Needs a new method for calculating stddev, we cannot just
 464          * average them we do below for nr > 1
 465          */
 466         if (nr == 1) {
 467                 mean = src->mean;
 468                 S = src->S;
 469         } else {
 470                 mean = ((src->mean * (double) (nr - 1))
 471                                 + dst->mean) / ((double) nr);
 472                 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr);
 473         }
 474
 475         dst->mean = mean;
 476         dst->S = S;
 477 }
 478
 479 void show_run_stats(void)
 480 {
 481         struct group_run_stats *runstats, *rs;
 482         struct thread_data *td;
 483         struct thread_stat *threadstats, *ts;
 484         int i, j, k, l, nr_ts, last_ts, idx;
 485         int kb_base_warned = 0;
 486
 487         runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
 488
 489         for (i = 0; i < groupid + 1; i++) {
 490                 rs = &runstats[i];
 491
 492                 memset(rs, 0, sizeof(*rs));
 493                 rs->min_bw[0] = rs->min_run[0] = ~0UL;
 494                 rs->min_bw[1] = rs->min_run[1] = ~0UL;
 495         }
 496
 497         /*
 498          * find out how many threads stats we need. if group reporting isn't
 499          * enabled, it's one-per-td.
 500          */
 501         nr_ts = 0;
 502         last_ts = -1;
 503         for_each_td(td, i) {
 504                 if (!td->o.group_reporting) {
 505                         nr_ts++;
 506                         continue;
 507                 }
 508                 if (last_ts == td->groupid)
 509                         continue;
 510
 511                 last_ts = td->groupid;
 512                 nr_ts++;
 513         }
 514
 515         threadstats = malloc(nr_ts * sizeof(struct thread_stat));
 516
 517         for (i = 0; i < nr_ts; i++) {
 518                 ts = &threadstats[i];
 519
 520                 memset(ts, 0, sizeof(*ts));
 521                 for (j = 0; j <= DDIR_WRITE; j++) {
 522                         ts->lat_stat[j].min_val = -1UL;
 523                         ts->clat_stat[j].min_val = -1UL;
 524                         ts->slat_stat[j].min_val = -1UL;
 525                         ts->bw_stat[j].min_val = -1UL;
 526                 }
 527                 ts->groupid = -1;
 528         }
 529
 530         j = 0;
 531         last_ts = -1;
 532         idx = 0;
 533         for_each_td(td, i) {
 534                 if (idx && (!td->o.group_reporting ||
 535                     (td->o.group_reporting && last_ts != td->groupid))) {
 536                         idx = 0;
 537                         j++;
 538                 }
 539
 540                 last_ts = td->groupid;
 541
 542                 ts = &threadstats[j];
 543
 544                 idx++;
 545                 ts->members++;
 546
 547                 if (ts->groupid == -1) {
 548                         /*
 549                          * These are per-group shared already
 550                          */
 551                         ts->name = td->o.name;
 552                         ts->description = td->o.description;
 553                         ts->groupid = td->groupid;
 554
 555                         /*
 556                          * first pid in group, not very useful...
 557                          */
 558                         ts->pid = td->pid;
 559
 560                         ts->kb_base = td->o.kb_base;
 561                 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
 562                         log_info("fio: kb_base differs for jobs in group, using"
 563                                  " %u as the base\n", ts->kb_base);
 564                         kb_base_warned = 1;
 565                 }
 566
 567                 ts->continue_on_error = td->o.continue_on_error;
 568                 ts->total_err_count += td->total_err_count;
 569                 ts->first_error = td->first_error;
 570                 if (!ts->error) {
 571                         if (!td->error && td->o.continue_on_error &&
 572                             td->first_error) {
 573                                 ts->error = td->first_error;
 574                                 ts->verror = td->verror;
 575                         } else  if (td->error) {
 576                                 ts->error = td->error;
 577                                 ts->verror = td->verror;
 578                         }
 579                 }
 580
 581                 for (l = 0; l <= DDIR_WRITE; l++) {
 582                         sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx);
 583                         sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx);
 584                         sum_stat(&ts->lat_stat[l], &td->ts.lat_stat[l], idx);
 585                         sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx);
 586
 587                         ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l];
 588                         ts->io_bytes[l] += td->ts.io_bytes[l];
 589
 590                         if (ts->runtime[l] < td->ts.runtime[l])
 591                                 ts->runtime[l] = td->ts.runtime[l];
 592                 }
 593
 594                 ts->usr_time += td->ts.usr_time;
 595                 ts->sys_time += td->ts.sys_time;
 596                 ts->ctx += td->ts.ctx;
 597                 ts->majf += td->ts.majf;
 598                 ts->minf += td->ts.minf;
 599
 600                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 601                         ts->io_u_map[k] += td->ts.io_u_map[k];
 602                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 603                         ts->io_u_submit[k] += td->ts.io_u_submit[k];
 604                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 605                         ts->io_u_complete[k] += td->ts.io_u_complete[k];
 606                 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
 607                         ts->io_u_lat_u[k] += td->ts.io_u_lat_u[k];
 608                 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
 609                         ts->io_u_lat_m[k] += td->ts.io_u_lat_m[k];
 610
 611
 612                 for (k = 0; k <= DDIR_WRITE; k++) {
 613                         ts->total_io_u[k] += td->ts.total_io_u[k];
 614                         ts->short_io_u[k] += td->ts.short_io_u[k];
 615                 }
 616
 617                 ts->total_run_time += td->ts.total_run_time;
 618                 ts->total_submit += td->ts.total_submit;
 619                 ts->total_complete += td->ts.total_complete;
 620         }
 621
 622         for (i = 0; i < nr_ts; i++) {
 623                 unsigned long long bw;
 624
 625                 ts = &threadstats[i];
 626                 rs = &runstats[ts->groupid];
 627                 rs->kb_base = ts->kb_base;
 628
 629                 for (j = 0; j <= DDIR_WRITE; j++) {
 630                         if (!ts->runtime[j])
 631                                 continue;
 632                         if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
 633                                 rs->min_run[j] = ts->runtime[j];
 634                         if (ts->runtime[j] > rs->max_run[j])
 635                                 rs->max_run[j] = ts->runtime[j];
 636
 637                         bw = 0;
 638                         if (ts->runtime[j]) {
 639                                 unsigned long runt;
 640
 641                                 runt = ts->runtime[j];
 642                                 bw = ts->io_bytes[j] / runt;
 643                         }
 644                         if (bw < rs->min_bw[j])
 645                                 rs->min_bw[j] = bw;
 646                         if (bw > rs->max_bw[j])
 647                                 rs->max_bw[j] = bw;
 648
 649                         rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
 650                 }
 651         }
 652
 653         for (i = 0; i < groupid + 1; i++) {
 654                 unsigned long max_run[2];
 655
 656                 rs = &runstats[i];
 657                 max_run[0] = rs->max_run[0];
 658                 max_run[1] = rs->max_run[1];
 659
 660                 if (rs->max_run[0])
 661                         rs->agg[0] = (rs->io_kb[0] * 1000) / max_run[0];
 662                 if (rs->max_run[1])
 663                         rs->agg[1] = (rs->io_kb[1] * 1000) / max_run[1];
 664         }
 665
 666         /*
 667          * don't overwrite last signal output
 668          */
 669         if (!terse_output)
 670                 log_info("\n");
 671
 672         for (i = 0; i < nr_ts; i++) {
 673                 ts = &threadstats[i];
 674                 rs = &runstats[ts->groupid];
 675
 676                 if (terse_output)
 677                         show_thread_status_terse(ts, rs);
 678                 else
 679                         show_thread_status(ts, rs);
 680         }
 681
 682         if (!terse_output) {
 683                 for (i = 0; i < groupid + 1; i++)
 684                         show_group_stats(&runstats[i], i);
 685
 686                 show_disk_util();
 687         }
 688
 689         free(runstats);
 690         free(threadstats);
 691 }
 692
 693 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
 694 {
 695         double val = data;
 696         double delta;
 697
 698         if (data > is->max_val)
 699                 is->max_val = data;
 700         if (data < is->min_val)
 701                 is->min_val = data;
 702
 703         delta = val - is->mean;
 704         if (delta) {
 705                 is->mean += delta / (is->samples + 1.0);
 706                 is->S += delta * (val - is->mean);
 707         }
 708
 709         is->samples++;
 710 }
 711
 712 static void __add_log_sample(struct io_log *iolog, unsigned long val,
 713                              enum fio_ddir ddir, unsigned int bs,
 714                              unsigned long time)
 715 {
 716         const int nr_samples = iolog->nr_samples;
 717
 718         if (iolog->nr_samples == iolog->max_samples) {
 719                 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
 720
 721                 iolog->log = realloc(iolog->log, new_size);
 722                 iolog->max_samples <<= 1;
 723         }
 724
 725         iolog->log[nr_samples].val = val;
 726         iolog->log[nr_samples].time = time;
 727         iolog->log[nr_samples].ddir = ddir;
 728         iolog->log[nr_samples].bs = bs;
 729         iolog->nr_samples++;
 730 }
 731
 732 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
 733                            unsigned long val, enum fio_ddir ddir,
 734                            unsigned int bs)
 735 {
 736         __add_log_sample(iolog, val, ddir, bs, mtime_since_now(&td->epoch));
 737 }
 738
 739 void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
 740 {
 741         struct io_log *iolog = agg_io_log[ddir];
 742
 743         __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
 744 }
 745
 746 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
 747                      unsigned long usec, unsigned int bs)
 748 {
 749         struct thread_stat *ts = &td->ts;
 750
 751         add_stat_sample(&ts->clat_stat[ddir], usec);
 752
 753         if (ts->clat_log)
 754                 add_log_sample(td, ts->clat_log, usec, ddir, bs);
 755 }
 756
 757 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
 758                      unsigned long usec, unsigned int bs)
 759 {
 760         struct thread_stat *ts = &td->ts;
 761
 762         add_stat_sample(&ts->slat_stat[ddir], usec);
 763
 764         if (ts->slat_log)
 765                 add_log_sample(td, ts->slat_log, usec, ddir, bs);
 766 }
 767
 768 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
 769                     unsigned long usec, unsigned int bs)
 770 {
 771         struct thread_stat *ts = &td->ts;
 772
 773         add_stat_sample(&ts->lat_stat[ddir], usec);
 774
 775         if (ts->lat_log)
 776                 add_log_sample(td, ts->lat_log, usec, ddir, bs);
 777 }
 778
 779 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
 780                    struct timeval *t)
 781 {
 782         struct thread_stat *ts = &td->ts;
 783         unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
 784         unsigned long rate;
 785
 786         if (spent < td->o.bw_avg_time)
 787                 return;
 788
 789         rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) *
 790                         1000 / spent / 1024;
 791         add_stat_sample(&ts->bw_stat[ddir], rate);
 792
 793         if (ts->bw_log)
 794                 add_log_sample(td, ts->bw_log, rate, ddir, bs);
 795
 796         fio_gettime(&ts->stat_sample_time[ddir], NULL);
 797         ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
 798 }