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->bw_stat[ddir], &min, &max, &mean, &dev)) {
 214                 double p_of_agg;
 215
 216                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 217                 log_info("    bw (KB/s) : min=%5lu, max=%5lu, per=%3.2f%%,"
 218                          " avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg,
 219                                                         mean, dev);
 220         }
 221 }
 222
 223 static void show_lat(double *io_u_lat, int nr, const char **ranges,
 224                      const char *msg)
 225 {
 226         int new_line = 1, i, line = 0;
 227
 228         for (i = 0; i < nr; i++) {
 229                 if (io_u_lat[i] <= 0.0)
 230                         continue;
 231                 if (new_line) {
 232                         if (line)
 233                                 log_info("\n");
 234                         log_info("     lat (%s): ", msg);
 235                         new_line = 0;
 236                         line = 0;
 237                 }
 238                 if (line)
 239                         log_info(", ");
 240                 log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
 241                 line++;
 242                 if (line == 5)
 243                         new_line = 1;
 244         }
 245 }
 246
 247 static void show_lat_u(double *io_u_lat_u)
 248 {
 249         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 250                                  "250=", "500=", "750=", "1000=", };
 251
 252         show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
 253 }
 254
 255 static void show_lat_m(double *io_u_lat_m)
 256 {
 257         const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
 258                                  "250=", "500=", "750=", "1000=", "2000=",
 259                                  ">=2000=", };
 260
 261         show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
 262 }
 263
 264 static void show_latencies(double *io_u_lat_u, double *io_u_lat_m)
 265 {
 266         show_lat_u(io_u_lat_u);
 267         log_info("\n");
 268         show_lat_m(io_u_lat_m);
 269         log_info("\n");
 270 }
 271
 272 static void show_thread_status(struct thread_stat *ts,
 273                                struct group_run_stats *rs)
 274 {
 275         double usr_cpu, sys_cpu;
 276         unsigned long runtime;
 277         double io_u_dist[FIO_IO_U_MAP_NR];
 278         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 279         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 280
 281         if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
 282             !(ts->total_io_u[0] + ts->total_io_u[1]))
 283                 return;
 284
 285         if (!ts->error) {
 286                 log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d\n",
 287                                         ts->name, ts->groupid, ts->members,
 288                                         ts->error, (int) ts->pid);
 289         } else {
 290                 log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d\n",
 291                                         ts->name, ts->groupid, ts->members,
 292                                         ts->error, ts->verror, (int) ts->pid);
 293         }
 294
 295         if (ts->description)
 296                 log_info("  Description  : [%s]\n", ts->description);
 297
 298         if (ts->io_bytes[DDIR_READ])
 299                 show_ddir_status(rs, ts, DDIR_READ);
 300         if (ts->io_bytes[DDIR_WRITE])
 301                 show_ddir_status(rs, ts, DDIR_WRITE);
 302
 303         runtime = ts->total_run_time;
 304         if (runtime) {
 305                 double runt = (double) runtime;
 306
 307                 usr_cpu = (double) ts->usr_time * 100 / runt;
 308                 sys_cpu = (double) ts->sys_time * 100 / runt;
 309         } else {
 310                 usr_cpu = 0;
 311                 sys_cpu = 0;
 312         }
 313
 314         log_info("  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
 315                  " minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
 316
 317         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 318         log_info("  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
 319                  " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 320                                         io_u_dist[1], io_u_dist[2],
 321                                         io_u_dist[3], io_u_dist[4],
 322                                         io_u_dist[5], io_u_dist[6]);
 323
 324         stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
 325         log_info("     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 326                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 327                                         io_u_dist[1], io_u_dist[2],
 328                                         io_u_dist[3], io_u_dist[4],
 329                                         io_u_dist[5], io_u_dist[6]);
 330         stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
 331         log_info("     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
 332                  " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
 333                                         io_u_dist[1], io_u_dist[2],
 334                                         io_u_dist[3], io_u_dist[4],
 335                                         io_u_dist[5], io_u_dist[6]);
 336         log_info("     issued r/w: total=%lu/%lu, short=%lu/%lu\n",
 337                                         ts->total_io_u[0], ts->total_io_u[1],
 338                                         ts->short_io_u[0], ts->short_io_u[1]);
 339         stat_calc_lat_u(ts, io_u_lat_u);
 340         stat_calc_lat_m(ts, io_u_lat_m);
 341         show_latencies(io_u_lat_u, io_u_lat_m);
 342         if (ts->continue_on_error) {
 343                 log_info("     errors    : total=%lu, first_error=%d/<%s>\n",
 344                                         ts->total_err_count,
 345                                         ts->first_error,
 346                                         strerror(ts->first_error));
 347         }
 348 }
 349
 350 static void show_ddir_status_terse(struct thread_stat *ts,
 351                                    struct group_run_stats *rs, int ddir)
 352 {
 353         unsigned long min, max;
 354         unsigned long long bw;
 355         double mean, dev;
 356
 357         bw = 0;
 358         if (ts->runtime[ddir])
 359                 bw = ts->io_bytes[ddir] / ts->runtime[ddir];
 360
 361         log_info(";%llu;%llu;%lu", ts->io_bytes[ddir] >> 10, bw,
 362                                                         ts->runtime[ddir]);
 363
 364         if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 365                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 366         else
 367                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 368
 369         if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 370                 log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
 371         else
 372                 log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 373
 374         if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 375                 double p_of_agg;
 376
 377                 p_of_agg = mean * 100 / (double) rs->agg[ddir];
 378                 log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
 379         } else
 380                 log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
 381 }
 382
 383
 384 static void show_thread_status_terse(struct thread_stat *ts,
 385                                      struct group_run_stats *rs)
 386 {
 387         double io_u_dist[FIO_IO_U_MAP_NR];
 388         double io_u_lat_u[FIO_IO_U_LAT_U_NR];
 389         double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 390         double usr_cpu, sys_cpu;
 391         int i;
 392
 393         log_info("%s;%d;%d", ts->name, ts->groupid, ts->error);
 394
 395         show_ddir_status_terse(ts, rs, 0);
 396         show_ddir_status_terse(ts, rs, 1);
 397
 398         if (ts->total_run_time) {
 399                 double runt = (double) ts->total_run_time;
 400
 401                 usr_cpu = (double) ts->usr_time * 100 / runt;
 402                 sys_cpu = (double) ts->sys_time * 100 / runt;
 403         } else {
 404                 usr_cpu = 0;
 405                 sys_cpu = 0;
 406         }
 407
 408         log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
 409                                                                 ts->minf);
 410
 411         stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
 412         stat_calc_lat_u(ts, io_u_lat_u);
 413         stat_calc_lat_m(ts, io_u_lat_m);
 414
 415         log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
 416                         io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
 417                         io_u_dist[4], io_u_dist[5], io_u_dist[6]);
 418
 419         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
 420                 log_info(";%3.2f%%", io_u_lat_u[i]);
 421         for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
 422                 log_info(";%3.2f%%", io_u_lat_m[i]);
 423         if (ts->continue_on_error)
 424                 log_info(";%lu;%d", ts->total_err_count, ts->first_error);
 425         log_info("\n");
 426
 427         if (ts->description)
 428                 log_info(";%s", ts->description);
 429
 430         log_info("\n");
 431 }
 432
 433 static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
 434 {
 435         double mean, S;
 436
 437         dst->min_val = min(dst->min_val, src->min_val);
 438         dst->max_val = max(dst->max_val, src->max_val);
 439         dst->samples += src->samples;
 440
 441         /*
 442          * Needs a new method for calculating stddev, we cannot just
 443          * average them we do below for nr > 1
 444          */
 445         if (nr == 1) {
 446                 mean = src->mean;
 447                 S = src->S;
 448         } else {
 449                 mean = ((src->mean * (double) (nr - 1))
 450                                 + dst->mean) / ((double) nr);
 451                 S = ((src->S * (double) (nr - 1)) + dst->S) / ((double) nr);
 452         }
 453
 454         dst->mean = mean;
 455         dst->S = S;
 456 }
 457
 458 void show_run_stats(void)
 459 {
 460         struct group_run_stats *runstats, *rs;
 461         struct thread_data *td;
 462         struct thread_stat *threadstats, *ts;
 463         int i, j, k, l, nr_ts, last_ts, idx;
 464         int kb_base_warned = 0;
 465
 466         runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
 467
 468         for (i = 0; i < groupid + 1; i++) {
 469                 rs = &runstats[i];
 470
 471                 memset(rs, 0, sizeof(*rs));
 472                 rs->min_bw[0] = rs->min_run[0] = ~0UL;
 473                 rs->min_bw[1] = rs->min_run[1] = ~0UL;
 474         }
 475
 476         /*
 477          * find out how many threads stats we need. if group reporting isn't
 478          * enabled, it's one-per-td.
 479          */
 480         nr_ts = 0;
 481         last_ts = -1;
 482         for_each_td(td, i) {
 483                 if (!td->o.group_reporting) {
 484                         nr_ts++;
 485                         continue;
 486                 }
 487                 if (last_ts == td->groupid)
 488                         continue;
 489
 490                 last_ts = td->groupid;
 491                 nr_ts++;
 492         }
 493
 494         threadstats = malloc(nr_ts * sizeof(struct thread_stat));
 495
 496         for (i = 0; i < nr_ts; i++) {
 497                 ts = &threadstats[i];
 498
 499                 memset(ts, 0, sizeof(*ts));
 500                 for (j = 0; j <= DDIR_WRITE; j++) {
 501                         ts->clat_stat[j].min_val = -1UL;
 502                         ts->slat_stat[j].min_val = -1UL;
 503                         ts->bw_stat[j].min_val = -1UL;
 504                 }
 505                 ts->groupid = -1;
 506         }
 507
 508         j = 0;
 509         last_ts = -1;
 510         idx = 0;
 511         for_each_td(td, i) {
 512                 if (idx && (!td->o.group_reporting ||
 513                     (td->o.group_reporting && last_ts != td->groupid))) {
 514                         idx = 0;
 515                         j++;
 516                 }
 517
 518                 last_ts = td->groupid;
 519
 520                 ts = &threadstats[j];
 521
 522                 idx++;
 523                 ts->members++;
 524
 525                 if (ts->groupid == -1) {
 526                         /*
 527                          * These are per-group shared already
 528                          */
 529                         ts->name = td->o.name;
 530                         ts->description = td->o.description;
 531                         ts->groupid = td->groupid;
 532
 533                         /*
 534                          * first pid in group, not very useful...
 535                          */
 536                         ts->pid = td->pid;
 537
 538                         ts->kb_base = td->o.kb_base;
 539                 } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
 540                         log_info("fio: kb_base differs for jobs in group, using"
 541                                  " %u as the base\n", ts->kb_base);
 542                         kb_base_warned = 1;
 543                 }
 544
 545                 ts->continue_on_error = td->o.continue_on_error;
 546                 ts->total_err_count += td->total_err_count;
 547                 ts->first_error = td->first_error;
 548                 if (!ts->error) {
 549                         if (!td->error && td->o.continue_on_error &&
 550                             td->first_error) {
 551                                 ts->error = td->first_error;
 552                                 ts->verror = td->verror;
 553                         } else  if (td->error) {
 554                                 ts->error = td->error;
 555                                 ts->verror = td->verror;
 556                         }
 557                 }
 558
 559                 for (l = 0; l <= DDIR_WRITE; l++) {
 560                         sum_stat(&ts->clat_stat[l], &td->ts.clat_stat[l], idx);
 561                         sum_stat(&ts->slat_stat[l], &td->ts.slat_stat[l], idx);
 562                         sum_stat(&ts->bw_stat[l], &td->ts.bw_stat[l], idx);
 563
 564                         ts->stat_io_bytes[l] += td->ts.stat_io_bytes[l];
 565                         ts->io_bytes[l] += td->ts.io_bytes[l];
 566
 567                         if (ts->runtime[l] < td->ts.runtime[l])
 568                                 ts->runtime[l] = td->ts.runtime[l];
 569                 }
 570
 571                 ts->usr_time += td->ts.usr_time;
 572                 ts->sys_time += td->ts.sys_time;
 573                 ts->ctx += td->ts.ctx;
 574                 ts->majf += td->ts.majf;
 575                 ts->minf += td->ts.minf;
 576
 577                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 578                         ts->io_u_map[k] += td->ts.io_u_map[k];
 579                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 580                         ts->io_u_submit[k] += td->ts.io_u_submit[k];
 581                 for (k = 0; k < FIO_IO_U_MAP_NR; k++)
 582                         ts->io_u_complete[k] += td->ts.io_u_complete[k];
 583                 for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
 584                         ts->io_u_lat_u[k] += td->ts.io_u_lat_u[k];
 585                 for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
 586                         ts->io_u_lat_m[k] += td->ts.io_u_lat_m[k];
 587
 588
 589                 for (k = 0; k <= DDIR_WRITE; k++) {
 590                         ts->total_io_u[k] += td->ts.total_io_u[k];
 591                         ts->short_io_u[k] += td->ts.short_io_u[k];
 592                 }
 593
 594                 ts->total_run_time += td->ts.total_run_time;
 595                 ts->total_submit += td->ts.total_submit;
 596                 ts->total_complete += td->ts.total_complete;
 597         }
 598
 599         for (i = 0; i < nr_ts; i++) {
 600                 unsigned long long bw;
 601
 602                 ts = &threadstats[i];
 603                 rs = &runstats[ts->groupid];
 604                 rs->kb_base = ts->kb_base;
 605
 606                 for (j = 0; j <= DDIR_WRITE; j++) {
 607                         if (!ts->runtime[j])
 608                                 continue;
 609                         if (ts->runtime[j] < rs->min_run[j] || !rs->min_run[j])
 610                                 rs->min_run[j] = ts->runtime[j];
 611                         if (ts->runtime[j] > rs->max_run[j])
 612                                 rs->max_run[j] = ts->runtime[j];
 613
 614                         bw = 0;
 615                         if (ts->runtime[j]) {
 616                                 unsigned long runt;
 617
 618                                 runt = ts->runtime[j];
 619                                 bw = ts->io_bytes[j] / runt;
 620                         }
 621                         if (bw < rs->min_bw[j])
 622                                 rs->min_bw[j] = bw;
 623                         if (bw > rs->max_bw[j])
 624                                 rs->max_bw[j] = bw;
 625
 626                         rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
 627                 }
 628         }
 629
 630         for (i = 0; i < groupid + 1; i++) {
 631                 unsigned long max_run[2];
 632
 633                 rs = &runstats[i];
 634                 max_run[0] = rs->max_run[0];
 635                 max_run[1] = rs->max_run[1];
 636
 637                 if (rs->max_run[0])
 638                         rs->agg[0] = (rs->io_kb[0] * 1000) / max_run[0];
 639                 if (rs->max_run[1])
 640                         rs->agg[1] = (rs->io_kb[1] * 1000) / max_run[1];
 641         }
 642
 643         /*
 644          * don't overwrite last signal output
 645          */
 646         if (!terse_output)
 647                 log_info("\n");
 648
 649         for (i = 0; i < nr_ts; i++) {
 650                 ts = &threadstats[i];
 651                 rs = &runstats[ts->groupid];
 652
 653                 if (terse_output)
 654                         show_thread_status_terse(ts, rs);
 655                 else
 656                         show_thread_status(ts, rs);
 657         }
 658
 659         if (!terse_output) {
 660                 for (i = 0; i < groupid + 1; i++)
 661                         show_group_stats(&runstats[i], i);
 662
 663                 show_disk_util();
 664         }
 665
 666         free(runstats);
 667         free(threadstats);
 668 }
 669
 670 static inline void add_stat_sample(struct io_stat *is, unsigned long data)
 671 {
 672         double val = data;
 673         double delta;
 674
 675         if (data > is->max_val)
 676                 is->max_val = data;
 677         if (data < is->min_val)
 678                 is->min_val = data;
 679
 680         delta = val - is->mean;
 681         if (delta) {
 682                 is->mean += delta / (is->samples + 1.0);
 683                 is->S += delta * (val - is->mean);
 684         }
 685
 686         is->samples++;
 687 }
 688
 689 static void __add_log_sample(struct io_log *iolog, unsigned long val,
 690                              enum fio_ddir ddir, unsigned int bs,
 691                              unsigned long time)
 692 {
 693         const int nr_samples = iolog->nr_samples;
 694
 695         if (iolog->nr_samples == iolog->max_samples) {
 696                 int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
 697
 698                 iolog->log = realloc(iolog->log, new_size);
 699                 iolog->max_samples <<= 1;
 700         }
 701
 702         iolog->log[nr_samples].val = val;
 703         iolog->log[nr_samples].time = time;
 704         iolog->log[nr_samples].ddir = ddir;
 705         iolog->log[nr_samples].bs = bs;
 706         iolog->nr_samples++;
 707 }
 708
 709 static void add_log_sample(struct thread_data *td, struct io_log *iolog,
 710                            unsigned long val, enum fio_ddir ddir,
 711                            unsigned int bs)
 712 {
 713         __add_log_sample(iolog, val, ddir, bs, mtime_since_now(&td->epoch));
 714 }
 715
 716 void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
 717 {
 718         struct io_log *iolog = agg_io_log[ddir];
 719
 720         __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis());
 721 }
 722
 723 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
 724                      unsigned long usec, unsigned int bs)
 725 {
 726         struct thread_stat *ts = &td->ts;
 727
 728         add_stat_sample(&ts->clat_stat[ddir], usec);
 729
 730         if (ts->clat_log)
 731                 add_log_sample(td, ts->clat_log, usec, ddir, bs);
 732 }
 733
 734 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
 735                      unsigned long usec, unsigned int bs)
 736 {
 737         struct thread_stat *ts = &td->ts;
 738
 739         add_stat_sample(&ts->slat_stat[ddir], usec);
 740
 741         if (ts->slat_log)
 742                 add_log_sample(td, ts->slat_log, usec, ddir, bs);
 743 }
 744
 745 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
 746                    struct timeval *t)
 747 {
 748         struct thread_stat *ts = &td->ts;
 749         unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
 750         unsigned long rate;
 751
 752         if (spent < td->o.bw_avg_time)
 753                 return;
 754
 755         rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) *
 756                         1000 / spent / 1024;
 757         add_stat_sample(&ts->bw_stat[ddir], rate);
 758
 759         if (ts->bw_log)
 760                 add_log_sample(td, ts->bw_log, rate, ddir, bs);
 761
 762         fio_gettime(&ts->stat_sample_time[ddir], NULL);
 763         ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
 764 }