usr.sbin/iostat/iostat.c

   1 /*
   2  * Copyright (c) 1997, 1998  Kenneth D. Merry.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/usr.sbin/iostat/iostat.c,v 1.17.2.2 2001/07/19 04:15:42 kris Exp $
  29  * $DragonFly: src/usr.sbin/iostat/iostat.c,v 1.7 2005/09/01 19:08:38 swildner Exp $
  30  */
  31 /*
  32  * Parts of this program are derived from the original FreeBSD iostat
  33  * program:
  34  */
  35 /*-
  36  * Copyright (c) 1986, 1991, 1993
  37  *      The Regents of the University of California.  All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. All advertising materials mentioning features or use of this software
  48  *    must display the following acknowledgement:
  49  *      This product includes software developed by the University of
  50  *      California, Berkeley and its contributors.
  51  * 4. Neither the name of the University nor the names of its contributors
  52  *    may be used to endorse or promote products derived from this software
  53  *    without specific prior written permission.
  54  *
  55  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  56  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  57  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  58  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  59  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  60  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  61  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  62  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  63  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  64  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  65  * SUCH DAMAGE.
  66  */
  67 /*
  68  * Ideas for the new iostat statistics output modes taken from the NetBSD
  69  * version of iostat:
  70  */
  71 /*
  72  * Copyright (c) 1996 John M. Vinopal
  73  * All rights reserved.
  74  *
  75  * Redistribution and use in source and binary forms, with or without
  76  * modification, are permitted provided that the following conditions
  77  * are met:
  78  * 1. Redistributions of source code must retain the above copyright
  79  *    notice, this list of conditions and the following disclaimer.
  80  * 2. Redistributions in binary form must reproduce the above copyright
  81  *    notice, this list of conditions and the following disclaimer in the
  82  *    documentation and/or other materials provided with the distribution.
  83  * 3. All advertising materials mentioning features or use of this software
  84  *    must display the following acknowledgement:
  85  *      This product includes software developed for the NetBSD Project
  86  *      by John M. Vinopal.
  87  * 4. The name of the author may not be used to endorse or promote products
  88  *    derived from this software without specific prior written permission.
  89  *
  90  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  91  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  92  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  93  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  94  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  95  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  96  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  97  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  98  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  99  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 100  * SUCH DAMAGE.
 101  */
 102
 103 #include <sys/user.h>
 104 #include <sys/param.h>
 105 #include <sys/errno.h>
 106
 107 #include <err.h>
 108 #include <ctype.h>
 109 #include <fcntl.h>
 110 #include <kinfo.h>
 111 #include <stdio.h>
 112 #include <stdlib.h>
 113 #include <string.h>
 114 #include <unistd.h>
 115 #include <limits.h>
 116 #include <devstat.h>
 117
 118 struct statinfo cur, last;
 119 uint64_t tk_nin, old_tk_nin, diff_tk_nin;
 120 uint64_t tk_nout, old_tk_nout, diff_tk_nout;
 121 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
 122 double cp_time_total;
 123 int num_devices;
 124 struct device_selection *dev_select;
 125 int maxshowdevs;
 126 int dflag = 0, Dflag=0, Iflag = 0, Cflag = 0, Tflag = 0, oflag = 0, Kflag = 0;
 127
 128 /* local function declarations */
 129 static void usage(void);
 130 static void phdr(int signo);
 131 static void devstats(int perf_select);
 132 static void cpustats(void);
 133
 134 static void
 135 usage(void)
 136 {
 137         /*
 138          * We also support the following 'traditional' syntax:
 139          * iostat [drives] [wait [count]]
 140          * This isn't mentioned in the man page, or the usage statement,
 141          * but it is supported.
 142          */
 143         fprintf(stderr, "usage: iostat [-CdhIKoT] [-c count]"
 144                 " [-n devs]\n"
 145                 "\t      [-t type,if,pass] [-w wait] [drives]\n");
 146 }
 147
 148 int
 149 main(int argc, char **argv)
 150 {
 151         int c;
 152         int tflag = 0, hflag = 0, cflag = 0, wflag = 0, nflag = 0;
 153         int count = 0, waittime = 0;
 154         struct devstat_match *matches;
 155         int num_matches = 0;
 156         int hz;
 157         int headercount;
 158         long generation;
 159         int num_devices_specified;
 160         int num_selected, num_selections;
 161         long select_generation;
 162         char **specified_devices;
 163         devstat_select_mode select_mode;
 164
 165         matches = NULL;
 166         maxshowdevs = 3;
 167
 168         while ((c = getopt(argc, argv, "c:CdDhIKM:n:N:ot:Tw:")) != -1) {
 169                 switch(c) {
 170                         case 'c':
 171                                 cflag++;
 172                                 count = atoi(optarg);
 173                                 if (count < 1)
 174                                         errx(1, "count %d is < 1", count);
 175                                 break;
 176                         case 'C':
 177                                 Cflag++;
 178                                 break;
 179                         case 'd':
 180                                 dflag++;
 181                                 break;
 182                         case 'D':
 183                                 Dflag++;
 184                                 break;
 185                         case 'h':
 186                                 hflag++;
 187                                 break;
 188                         case 'I':
 189                                 Iflag++;
 190                                 break;
 191                         case 'K':
 192                                 Kflag++;
 193                                 break;
 194                         case 'n':
 195                                 nflag++;
 196                                 maxshowdevs = atoi(optarg);
 197                                 if (maxshowdevs < 0)
 198                                         errx(1, "number of devices %d is < 0",
 199                                              maxshowdevs);
 200                                 break;
 201                         case 'o':
 202                                 oflag++;
 203                                 break;
 204                         case 't':
 205                                 tflag++;
 206                                 if (buildmatch(optarg, &matches,
 207                                                &num_matches) != 0)
 208                                         errx(1, "%s", devstat_errbuf);
 209                                 break;
 210                         case 'T':
 211                                 Tflag++;
 212                                 break;
 213                         case 'w':
 214                                 wflag++;
 215                                 waittime = atoi(optarg);
 216                                 if (waittime < 1)
 217                                         errx(1, "wait time is < 1");
 218                                 break;
 219                         default:
 220                                 usage();
 221                                 exit(1);
 222                                 break;
 223                 }
 224         }
 225
 226         argc -= optind;
 227         argv += optind;
 228
 229         /*
 230          * Make sure that the userland devstat version matches the kernel
 231          * devstat version.  If not, exit and print a message informing
 232          * the user of his mistake.
 233          */
 234         if (checkversion() < 0)
 235                 errx(1, "%s", devstat_errbuf);
 236
 237         /*
 238          * Figure out how many devices we should display.
 239          */
 240         if (nflag == 0) {
 241                 if (oflag > 0) {
 242                         if ((dflag > 0) && (Cflag == 0) && (Tflag == 0))
 243                                 maxshowdevs = 5;
 244                         else if ((dflag > 0) && (Tflag > 0) && (Cflag == 0))
 245                                 maxshowdevs = 5;
 246                         else
 247                                 maxshowdevs = 4;
 248                 } else {
 249                         if ((dflag > 0) && (Cflag == 0))
 250                                 maxshowdevs = 4;
 251                         else
 252                                 maxshowdevs = 3;
 253                 }
 254         }
 255
 256         /* find out how many devices we have */
 257         if ((num_devices = getnumdevs()) < 0)
 258                 err(1, "can't get number of devices");
 259
 260         if ((cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
 261              NULL)
 262                 err(1, "devinfo malloc failed");
 263         if ((last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
 264              NULL)
 265                 err(1, "devinfo malloc failed");
 266         bzero(cur.dinfo, sizeof(struct devinfo));
 267         bzero(last.dinfo, sizeof(struct devinfo));
 268
 269         /*
 270          * Grab all the devices.  We don't look to see if the list has
 271          * changed here, since it almost certainly has.  We only look for
 272          * errors.
 273          */
 274         if (getdevs(&cur) == -1)
 275                 errx(1, "%s", devstat_errbuf);
 276
 277         num_devices = cur.dinfo->numdevs;
 278         generation = cur.dinfo->generation;
 279
 280         /*
 281          * If the user specified any devices on the command line, see if
 282          * they are in the list of devices we have now.
 283          */
 284         if ((specified_devices = (char **)malloc(sizeof(char *))) == NULL)
 285                 err(1, "specified_devices malloc failed");
 286         for (num_devices_specified = 0; *argv; ++argv) {
 287                 if (isdigit(**argv))
 288                         break;
 289                 num_devices_specified++;
 290                 specified_devices = (char **)realloc(specified_devices,
 291                                                      sizeof(char *) *
 292                                                      num_devices_specified);
 293                 specified_devices[num_devices_specified - 1] = *argv;
 294
 295         }
 296         if (nflag == 0 && maxshowdevs < num_devices_specified)
 297                 maxshowdevs = num_devices_specified;
 298
 299         dev_select = NULL;
 300
 301         if ((num_devices_specified == 0) && (num_matches == 0))
 302                 select_mode = DS_SELECT_ADD;
 303         else
 304                 select_mode = DS_SELECT_ONLY;
 305
 306         /*
 307          * At this point, selectdevs will almost surely indicate that the
 308          * device list has changed, so we don't look for return values of 0
 309          * or 1.  If we get back -1, though, there is an error.
 310          */
 311         if (selectdevs(&dev_select, &num_selected,
 312                        &num_selections, &select_generation,
 313                        generation, cur.dinfo->devices, num_devices,
 314                        matches, num_matches,
 315                        specified_devices, num_devices_specified,
 316                        select_mode, maxshowdevs, hflag) == -1)
 317                 errx(1, "%s", devstat_errbuf);
 318
 319         /*
 320          * Look for the traditional wait time and count arguments.
 321          */
 322         if (*argv) {
 323                 waittime = atoi(*argv);
 324
 325                 /* Let the user know he goofed, but keep going anyway */
 326                 if (wflag != 0)
 327                         warnx("discarding previous wait interval, using"
 328                               " %d instead", waittime);
 329                 wflag++;
 330
 331                 if (*++argv) {
 332                         count = atoi(*argv);
 333                         if (cflag != 0)
 334                                 warnx("discarding previous count, using %d"
 335                                       " instead", count);
 336                         cflag++;
 337                 } else
 338                         count = -1;
 339         }
 340
 341         /*
 342          * If the user specified a count, but not an interval, we default
 343          * to an interval of 1 second.
 344          */
 345         if ((wflag == 0) && (cflag > 0))
 346                 waittime = 1;
 347
 348         /*
 349          * If the user specified a wait time, but not a count, we want to
 350          * go on ad infinitum.  This can be redundant if the user uses the
 351          * traditional method of specifying the wait, since in that case we
 352          * already set count = -1 above.  Oh well.
 353          */
 354         if ((wflag > 0) && (cflag == 0))
 355                 count = -1;
 356
 357         if (kinfo_get_sched_hz(&hz))
 358                 err(1, "kinfo_get_sched_hz");
 359         if (kinfo_get_sched_stathz(&hz))
 360                 err(1, "kinfo_get_sched_stathz");
 361
 362         /*
 363          * If the user stops the program (control-Z) and then resumes it,
 364          * print out the header again.
 365          */
 366         signal(SIGCONT, phdr);
 367
 368         for (headercount = 1;;) {
 369                 struct devinfo *tmp_dinfo;
 370
 371                 if (!--headercount) {
 372                         phdr(0);
 373                         headercount = 20;
 374                 }
 375                 if (kinfo_get_tty_tk_nin(&tk_nin))
 376                         err(1, "kinfo_get_tty_tk_nin");
 377                 if (kinfo_get_tty_tk_nout(&tk_nout))
 378                         err(1, "kinfo_get_tty_tk_nout");
 379                 if (kinfo_get_sched_cputime(&cp_time))
 380                         err(1, "kinfo_get_sched_cputime");
 381
 382                 tmp_dinfo = last.dinfo;
 383                 last.dinfo = cur.dinfo;
 384                 cur.dinfo = tmp_dinfo;
 385
 386                 last.busy_time = cur.busy_time;
 387
 388                 /*
 389                  * Here what we want to do is refresh our device stats.
 390                  * getdevs() returns 1 when the device list has changed.
 391                  * If the device list has changed, we want to go through
 392                  * the selection process again, in case a device that we
 393                  * were previously displaying has gone away.
 394                  */
 395                 switch (getdevs(&cur)) {
 396                 case -1:
 397                         errx(1, "%s", devstat_errbuf);
 398                         break;
 399                 case 1: {
 400                         int retval;
 401
 402                         num_devices = cur.dinfo->numdevs;
 403                         generation = cur.dinfo->generation;
 404                         retval = selectdevs(&dev_select, &num_selected,
 405                                             &num_selections, &select_generation,
 406                                             generation, cur.dinfo->devices,
 407                                             num_devices, matches, num_matches,
 408                                             specified_devices,
 409                                             num_devices_specified,
 410                                             select_mode, maxshowdevs, hflag);
 411                         switch(retval) {
 412                         case -1:
 413                                 errx(1, "%s", devstat_errbuf);
 414                                 break;
 415                         case 1:
 416                                 phdr(0);
 417                                 headercount = 20;
 418                                 break;
 419                         default:
 420                                 break;
 421                         }
 422                         break;
 423                 }
 424                 default:
 425                         break;
 426                 }
 427
 428                 /*
 429                  * We only want to re-select devices if we're in 'top'
 430                  * mode.  This is the only mode where the devices selected
 431                  * could actually change.
 432                  */
 433                 if (hflag > 0) {
 434                         int retval;
 435                         retval = selectdevs(&dev_select, &num_selected,
 436                                             &num_selections, &select_generation,
 437                                             generation, cur.dinfo->devices,
 438                                             num_devices, matches, num_matches,
 439                                             specified_devices,
 440                                             num_devices_specified,
 441                                             select_mode, maxshowdevs, hflag);
 442                         switch(retval) {
 443                         case -1:
 444                                 errx(1,"%s", devstat_errbuf);
 445                                 break;
 446                         case 1:
 447                                 phdr(0);
 448                                 headercount = 20;
 449                                 break;
 450                         default:
 451                                 break;
 452                         }
 453                 }
 454
 455                 diff_tk_nin = tk_nin - old_tk_nin;
 456                 old_tk_nin = tk_nin;
 457                 diff_tk_nout = tk_nout - old_tk_nout;
 458                 old_tk_nout = tk_nout;
 459
 460                 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
 461                 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
 462                 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
 463                 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
 464                 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
 465                 cp_time_total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
 466                     diff_cp_time.cp_sys + diff_cp_time.cp_intr +
 467                     diff_cp_time.cp_idle;
 468                 old_cp_time = cp_time;
 469
 470                 if (cp_time_total == 0.0)
 471                         cp_time_total = 1.0;
 472
 473                 if ((dflag == 0) || (Tflag > 0))
 474                         printf("%4.0f%5.0f", diff_tk_nin / cp_time_total * 1e6,
 475                                 diff_tk_nout / cp_time_total * 1e6);
 476                 devstats(hflag);
 477                 if ((dflag == 0) || (Cflag > 0))
 478                         cpustats();
 479                 printf("\n");
 480                 fflush(stdout);
 481
 482                 if (count >= 0 && --count <= 0)
 483                         break;
 484
 485                 sleep(waittime);
 486         }
 487
 488         exit(0);
 489 }
 490
 491 static void
 492 phdr(__unused int signo)
 493 {
 494         int i;
 495         int printed;
 496
 497         if ((dflag == 0) || (Tflag > 0))
 498                 printf("      tty");
 499         for (i = 0, printed=0;(i < num_devices) && (printed < maxshowdevs);i++){
 500                 int di;
 501                 if ((dev_select[i].selected != 0)
 502                  && (dev_select[i].selected <= maxshowdevs)) {
 503                         di = dev_select[i].position;
 504                         if (oflag > 0)
 505                                 printf("%12.6s%d ",
 506                                             cur.dinfo->devices[di].device_name,
 507                                             cur.dinfo->devices[di].unit_number);
 508                         else
 509                                 if (Dflag > 0)
 510                                         printf("%19.6s%d            ",
 511                                                     cur.dinfo->devices[di].device_name,
 512                                                     cur.dinfo->devices[di].unit_number);
 513                                 else
 514                                         printf("%15.6s%d ",
 515                                                     cur.dinfo->devices[di].device_name,
 516                                                     cur.dinfo->devices[di].unit_number);
 517                         printed++;
 518                 }
 519         }
 520         if ((dflag == 0) || (Cflag > 0))
 521                 printf("            cpu\n");
 522         else
 523                 printf("\n");
 524
 525         if ((dflag == 0) || (Tflag > 0))
 526                 printf(" tin tout");
 527
 528         for (i=0, printed = 0;(i < num_devices) && (printed < maxshowdevs);i++){
 529                 if ((dev_select[i].selected != 0)
 530                  && (dev_select[i].selected <= maxshowdevs)) {
 531                         if (oflag > 0) {
 532                                 if (Iflag == 0)
 533                                         printf(" sps tps  msps ");
 534                                 else
 535                                         printf(" blk xfr msps ");
 536                         } else {
 537                                 if (Iflag == 0) {
 538                                         if (Dflag > 0)
 539                                                 printf("   KB/t rtps  MBr/s wtps  MBw/s ");
 540                                         else
 541                                                 printf("  KB/t tps   MB/s ");
 542                                 }
 543                                 else
 544                                         printf("  KB/t xfrs   MB ");
 545                         }
 546                         printed++;
 547                 }
 548         }
 549         if ((dflag == 0) || (Cflag > 0))
 550                 printf(" us ni sy in id\n");
 551         else
 552                 printf("\n");
 553
 554 }
 555
 556 static void
 557 devstats(int perf_select)
 558 {
 559         int dn;
 560         long double kb_per_transfer;
 561         long double transfers_per_second;
 562         long double transfers_per_secondr, transfers_per_secondw;
 563         long double mb_per_second;
 564         long double mb_per_secondr, mb_per_secondw;
 565         u_int64_t total_bytes, total_transfers, total_blocks;
 566         long double busy_seconds;
 567         long double total_mb;
 568         long double blocks_per_second, ms_per_transaction;
 569
 570         /*
 571          * Calculate elapsed time up front, since it's the same for all
 572          * devices.
 573          */
 574         busy_seconds = compute_etime(cur.busy_time, last.busy_time);
 575
 576         for (dn = 0; dn < num_devices; dn++) {
 577                 int di;
 578
 579                 if (((perf_select == 0) && (dev_select[dn].selected == 0))
 580                  || (dev_select[dn].selected > maxshowdevs))
 581                         continue;
 582
 583                 di = dev_select[dn].position;
 584
 585                 if (compute_stats(&cur.dinfo->devices[di],
 586                                   &last.dinfo->devices[di], busy_seconds,
 587                                   &total_bytes, &total_transfers,
 588                                   &total_blocks, &kb_per_transfer,
 589                                   &transfers_per_second, &mb_per_second,
 590                                   &blocks_per_second, &ms_per_transaction)!= 0)
 591                         errx(1, "%s", devstat_errbuf);
 592                 if (compute_stats_read(&cur.dinfo->devices[di],
 593                                 &last.dinfo->devices[di], busy_seconds,
 594                                 NULL, NULL,
 595                                 NULL, NULL,
 596                                 &transfers_per_secondr, &mb_per_secondr,
 597                                 NULL, NULL)!= 0)
 598                         errx(1, "%s", devstat_errbuf);
 599                 if (compute_stats_write(&cur.dinfo->devices[di],
 600                                 &last.dinfo->devices[di], busy_seconds,
 601                                 NULL, NULL,
 602                                 NULL, NULL,
 603                                 &transfers_per_secondw, &mb_per_secondw,
 604                                 NULL, NULL)!= 0)
 605                         errx(1, "%s", devstat_errbuf);
 606
 607                 if (perf_select != 0) {
 608                         dev_select[dn].bytes = total_bytes;
 609                         if ((dev_select[dn].selected == 0)
 610                          || (dev_select[dn].selected > maxshowdevs))
 611                                 continue;
 612                 }
 613
 614                 if (Kflag) {
 615                         int block_size = cur.dinfo->devices[di].block_size;
 616                         total_blocks = total_blocks * (block_size ?
 617                                                        block_size : 512) / 1024;
 618                 }
 619
 620                 if (oflag > 0) {
 621                         int msdig = (ms_per_transaction < 100.0) ? 1 : 0;
 622
 623                         if (Iflag == 0)
 624                                 printf("%4.0Lf%4.0Lf%5.*Lf ",
 625                                        blocks_per_second,
 626                                        transfers_per_second,
 627                                        msdig,
 628                                        ms_per_transaction);
 629                         else
 630                                 printf("%4.1ju%4.1ju%5.*Lf ",
 631                                        (uintmax_t)total_blocks,
 632                                        (uintmax_t)total_transfers,
 633                                        msdig,
 634                                        ms_per_transaction);
 635                 } else {
 636                         if (Iflag == 0)
 637                                 if (Dflag > 0) {
 638                                         printf(" %5.2Lf %4.0Lf %6.2Lf %4.0Lf %6.2Lf  ",
 639                                                kb_per_transfer,
 640                                                transfers_per_secondr,
 641                                                mb_per_secondr,
 642                                                transfers_per_secondw,
 643                                                mb_per_secondw);
 644                                 } else {
 645                                         printf(" %5.2Lf %4.0Lf %5.2Lf ",
 646                                                kb_per_transfer,
 647                                                transfers_per_second,
 648                                                mb_per_second);
 649                                 }
 650                         else {
 651                                 total_mb = total_bytes;
 652                                 total_mb /= 1024 * 1024;
 653
 654                                 printf(" %5.2Lf %3.1ju %5.2Lf ",
 655                                        kb_per_transfer,
 656                                        (uintmax_t)total_transfers,
 657                                        total_mb);
 658                         }
 659                 }
 660         }
 661 }
 662
 663 static void
 664 cpustats(void)
 665 {
 666         if (cp_time_total == 0.0)
 667                 cp_time_total = 1.0;
 668
 669         printf(" %2.0f", 100. * diff_cp_time.cp_user / cp_time_total);
 670         printf(" %2.0f", 100. * diff_cp_time.cp_nice / cp_time_total);
 671         printf(" %2.0f", 100. * diff_cp_time.cp_sys / cp_time_total);
 672         printf(" %2.0f", 100. * diff_cp_time.cp_intr / cp_time_total);
 673         printf(" %2.0f", 100. * diff_cp_time.cp_idle / cp_time_total);
 674 }