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 21:08:38 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/param.h>
 104 #include <sys/errno.h>
 105
 106 #include <err.h>
 107 #include <ctype.h>
 108 #include <fcntl.h>
 109 #include <kinfo.h>
 110 #include <stdio.h>
 111 #include <stdlib.h>
 112 #include <string.h>
 113 #include <unistd.h>
 114 #include <limits.h>
 115 #include <devstat.h>
 116
 117 struct statinfo cur, last;
 118 uint64_t tk_nin, old_tk_nin, diff_tk_nin;
 119 uint64_t tk_nout, old_tk_nout, diff_tk_nout;
 120 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
 121 double cp_time_total;
 122 int num_devices;
 123 struct device_selection *dev_select;
 124 int maxshowdevs;
 125 int dflag = 0, Iflag = 0, Cflag = 0, Tflag = 0, oflag = 0, Kflag = 0;
 126
 127 /* local function declarations */
 128 static void usage(void);
 129 static void phdr(int signo);
 130 static void devstats(int perf_select);
 131 static void cpustats(void);
 132
 133 static void
 134 usage(void)
 135 {
 136         /*
 137          * We also support the following 'traditional' syntax:
 138          * iostat [drives] [wait [count]]
 139          * This isn't mentioned in the man page, or the usage statement,
 140          * but it is supported.
 141          */
 142         fprintf(stderr, "usage: iostat [-CdhIKoT] [-c count]"
 143                 " [-n devs]\n"
 144                 "\t      [-t type,if,pass] [-w wait] [drives]\n");
 145 }
 146
 147 int
 148 main(int argc, char **argv)
 149 {
 150         int c;
 151         int tflag = 0, hflag = 0, cflag = 0, wflag = 0, nflag = 0;
 152         int count = 0, waittime = 0;
 153         struct devstat_match *matches;
 154         int num_matches = 0;
 155         int hz;
 156         int headercount;
 157         long generation;
 158         int num_devices_specified;
 159         int num_selected, num_selections;
 160         long select_generation;
 161         char **specified_devices;
 162         devstat_select_mode select_mode;
 163
 164         matches = NULL;
 165         maxshowdevs = 3;
 166
 167         while ((c = getopt(argc, argv, "c:CdhIKM:n:N:ot:Tw:")) != -1) {
 168                 switch(c) {
 169                         case 'c':
 170                                 cflag++;
 171                                 count = atoi(optarg);
 172                                 if (count < 1)
 173                                         errx(1, "count %d is < 1", count);
 174                                 break;
 175                         case 'C':
 176                                 Cflag++;
 177                                 break;
 178                         case 'd':
 179                                 dflag++;
 180                                 break;
 181                         case 'h':
 182                                 hflag++;
 183                                 break;
 184                         case 'I':
 185                                 Iflag++;
 186                                 break;
 187                         case 'K':
 188                                 Kflag++;
 189                                 break;
 190                         case 'n':
 191                                 nflag++;
 192                                 maxshowdevs = atoi(optarg);
 193                                 if (maxshowdevs < 0)
 194                                         errx(1, "number of devices %d is < 0",
 195                                              maxshowdevs);
 196                                 break;
 197                         case 'o':
 198                                 oflag++;
 199                                 break;
 200                         case 't':
 201                                 tflag++;
 202                                 if (buildmatch(optarg, &matches,
 203                                                &num_matches) != 0)
 204                                         errx(1, "%s", devstat_errbuf);
 205                                 break;
 206                         case 'T':
 207                                 Tflag++;
 208                                 break;
 209                         case 'w':
 210                                 wflag++;
 211                                 waittime = atoi(optarg);
 212                                 if (waittime < 1)
 213                                         errx(1, "wait time is < 1");
 214                                 break;
 215                         default:
 216                                 usage();
 217                                 exit(1);
 218                                 break;
 219                 }
 220         }
 221
 222         argc -= optind;
 223         argv += optind;
 224
 225         /*
 226          * Make sure that the userland devstat version matches the kernel
 227          * devstat version.  If not, exit and print a message informing
 228          * the user of his mistake.
 229          */
 230         if (checkversion() < 0)
 231                 errx(1, "%s", devstat_errbuf);
 232
 233         /*
 234          * Figure out how many devices we should display.
 235          */
 236         if (nflag == 0) {
 237                 if (oflag > 0) {
 238                         if ((dflag > 0) && (Cflag == 0) && (Tflag == 0))
 239                                 maxshowdevs = 5;
 240                         else if ((dflag > 0) && (Tflag > 0) && (Cflag == 0))
 241                                 maxshowdevs = 5;
 242                         else
 243                                 maxshowdevs = 4;
 244                 } else {
 245                         if ((dflag > 0) && (Cflag == 0))
 246                                 maxshowdevs = 4;
 247                         else
 248                                 maxshowdevs = 3;
 249                 }
 250         }
 251
 252         /* find out how many devices we have */
 253         if ((num_devices = getnumdevs()) < 0)
 254                 err(1, "can't get number of devices");
 255
 256         if ((cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
 257              NULL)
 258                 err(1, "devinfo malloc failed");
 259         if ((last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
 260              NULL)
 261                 err(1, "devinfo malloc failed");
 262         bzero(cur.dinfo, sizeof(struct devinfo));
 263         bzero(last.dinfo, sizeof(struct devinfo));
 264
 265         /*
 266          * Grab all the devices.  We don't look to see if the list has
 267          * changed here, since it almost certainly has.  We only look for
 268          * errors.
 269          */
 270         if (getdevs(&cur) == -1)
 271                 errx(1, "%s", devstat_errbuf);
 272
 273         num_devices = cur.dinfo->numdevs;
 274         generation = cur.dinfo->generation;
 275
 276         /*
 277          * If the user specified any devices on the command line, see if
 278          * they are in the list of devices we have now.
 279          */
 280         if ((specified_devices = (char **)malloc(sizeof(char *))) == NULL)
 281                 err(1, "specified_devices malloc failed");
 282         for (num_devices_specified = 0; *argv; ++argv) {
 283                 if (isdigit(**argv))
 284                         break;
 285                 num_devices_specified++;
 286                 specified_devices = (char **)realloc(specified_devices,
 287                                                      sizeof(char *) *
 288                                                      num_devices_specified);
 289                 specified_devices[num_devices_specified - 1] = *argv;
 290
 291         }
 292         if (nflag == 0 && maxshowdevs < num_devices_specified)
 293                 maxshowdevs = num_devices_specified;
 294
 295         dev_select = NULL;
 296
 297         if ((num_devices_specified == 0) && (num_matches == 0))
 298                 select_mode = DS_SELECT_ADD;
 299         else
 300                 select_mode = DS_SELECT_ONLY;
 301
 302         /*
 303          * At this point, selectdevs will almost surely indicate that the
 304          * device list has changed, so we don't look for return values of 0
 305          * or 1.  If we get back -1, though, there is an error.
 306          */
 307         if (selectdevs(&dev_select, &num_selected,
 308                        &num_selections, &select_generation,
 309                        generation, cur.dinfo->devices, num_devices,
 310                        matches, num_matches,
 311                        specified_devices, num_devices_specified,
 312                        select_mode, maxshowdevs, hflag) == -1)
 313                 errx(1, "%s", devstat_errbuf);
 314
 315         /*
 316          * Look for the traditional wait time and count arguments.
 317          */
 318         if (*argv) {
 319                 waittime = atoi(*argv);
 320
 321                 /* Let the user know he goofed, but keep going anyway */
 322                 if (wflag != 0)
 323                         warnx("discarding previous wait interval, using"
 324                               " %d instead", waittime);
 325                 wflag++;
 326
 327                 if (*++argv) {
 328                         count = atoi(*argv);
 329                         if (cflag != 0)
 330                                 warnx("discarding previous count, using %d"
 331                                       " instead", count);
 332                         cflag++;
 333                 } else
 334                         count = -1;
 335         }
 336
 337         /*
 338          * If the user specified a count, but not an interval, we default
 339          * to an interval of 1 second.
 340          */
 341         if ((wflag == 0) && (cflag > 0))
 342                 waittime = 1;
 343
 344         /*
 345          * If the user specified a wait time, but not a count, we want to
 346          * go on ad infinitum.  This can be redundant if the user uses the
 347          * traditional method of specifying the wait, since in that case we
 348          * already set count = -1 above.  Oh well.
 349          */
 350         if ((wflag > 0) && (cflag == 0))
 351                 count = -1;
 352
 353         if (kinfo_get_sched_hz(&hz))
 354                 err(1, "kinfo_get_sched_hz");
 355         if (kinfo_get_sched_stathz(&hz))
 356                 err(1, "kinfo_get_sched_stathz");
 357
 358         /*
 359          * If the user stops the program (control-Z) and then resumes it,
 360          * print out the header again.
 361          */
 362         signal(SIGCONT, phdr);
 363
 364         for (headercount = 1;;) {
 365                 struct devinfo *tmp_dinfo;
 366
 367                 if (!--headercount) {
 368                         phdr(0);
 369                         headercount = 20;
 370                 }
 371                 if (kinfo_get_tty_tk_nin(&tk_nin))
 372                         err(1, "kinfo_get_tty_tk_nin");
 373                 if (kinfo_get_tty_tk_nout(&tk_nout))
 374                         err(1, "kinfo_get_tty_tk_nout");
 375                 if (kinfo_get_sched_cputime(&cp_time))
 376                         err(1, "kinfo_get_sched_cputime");
 377
 378                 tmp_dinfo = last.dinfo;
 379                 last.dinfo = cur.dinfo;
 380                 cur.dinfo = tmp_dinfo;
 381
 382                 last.busy_time = cur.busy_time;
 383
 384                 /*
 385                  * Here what we want to do is refresh our device stats.
 386                  * getdevs() returns 1 when the device list has changed.
 387                  * If the device list has changed, we want to go through
 388                  * the selection process again, in case a device that we
 389                  * were previously displaying has gone away.
 390                  */
 391                 switch (getdevs(&cur)) {
 392                 case -1:
 393                         errx(1, "%s", devstat_errbuf);
 394                         break;
 395                 case 1: {
 396                         int retval;
 397
 398                         num_devices = cur.dinfo->numdevs;
 399                         generation = cur.dinfo->generation;
 400                         retval = selectdevs(&dev_select, &num_selected,
 401                                             &num_selections, &select_generation,
 402                                             generation, cur.dinfo->devices,
 403                                             num_devices, matches, num_matches,
 404                                             specified_devices,
 405                                             num_devices_specified,
 406                                             select_mode, maxshowdevs, hflag);
 407                         switch(retval) {
 408                         case -1:
 409                                 errx(1, "%s", devstat_errbuf);
 410                                 break;
 411                         case 1:
 412                                 phdr(0);
 413                                 headercount = 20;
 414                                 break;
 415                         default:
 416                                 break;
 417                         }
 418                         break;
 419                 }
 420                 default:
 421                         break;
 422                 }
 423
 424                 /*
 425                  * We only want to re-select devices if we're in 'top'
 426                  * mode.  This is the only mode where the devices selected
 427                  * could actually change.
 428                  */
 429                 if (hflag > 0) {
 430                         int retval;
 431                         retval = selectdevs(&dev_select, &num_selected,
 432                                             &num_selections, &select_generation,
 433                                             generation, cur.dinfo->devices,
 434                                             num_devices, matches, num_matches,
 435                                             specified_devices,
 436                                             num_devices_specified,
 437                                             select_mode, maxshowdevs, hflag);
 438                         switch(retval) {
 439                         case -1:
 440                                 errx(1,"%s", devstat_errbuf);
 441                                 break;
 442                         case 1:
 443                                 phdr(0);
 444                                 headercount = 20;
 445                                 break;
 446                         default:
 447                                 break;
 448                         }
 449                 }
 450
 451                 diff_tk_nin = tk_nin - old_tk_nin;
 452                 old_tk_nin = tk_nin;
 453                 diff_tk_nout = tk_nout - old_tk_nout;
 454                 old_tk_nout = tk_nout;
 455
 456                 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
 457                 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
 458                 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
 459                 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
 460                 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
 461                 cp_time_total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
 462                     diff_cp_time.cp_sys + diff_cp_time.cp_intr +
 463                     diff_cp_time.cp_idle;
 464                 old_cp_time = cp_time;
 465
 466                 if (cp_time_total == 0.0)
 467                         cp_time_total = 1.0;
 468
 469                 if ((dflag == 0) || (Tflag > 0))
 470                         printf("%4.0f%5.0f", diff_tk_nin / cp_time_total * 1e6,
 471                                 diff_tk_nout / cp_time_total * 1e6);
 472                 devstats(hflag);
 473                 if ((dflag == 0) || (Cflag > 0))
 474                         cpustats();
 475                 printf("\n");
 476                 fflush(stdout);
 477
 478                 if (count >= 0 && --count <= 0)
 479                         break;
 480
 481                 sleep(waittime);
 482         }
 483
 484         exit(0);
 485 }
 486
 487 static void
 488 phdr(__unused int signo)
 489 {
 490         int i;
 491         int printed;
 492
 493         if ((dflag == 0) || (Tflag > 0))
 494                 printf("      tty");
 495         for (i = 0, printed=0;(i < num_devices) && (printed < maxshowdevs);i++){
 496                 int di;
 497                 if ((dev_select[i].selected != 0)
 498                  && (dev_select[i].selected <= maxshowdevs)) {
 499                         di = dev_select[i].position;
 500                         if (oflag > 0)
 501                                 printf("%12.6s%d ",
 502                                             cur.dinfo->devices[di].device_name,
 503                                             cur.dinfo->devices[di].unit_number);
 504                         else
 505                                 printf("%15.6s%d ",
 506                                             cur.dinfo->devices[di].device_name,
 507                                             cur.dinfo->devices[di].unit_number);
 508                         printed++;
 509                 }
 510         }
 511         if ((dflag == 0) || (Cflag > 0))
 512                 printf("            cpu\n");
 513         else
 514                 printf("\n");
 515
 516         if ((dflag == 0) || (Tflag > 0))
 517                 printf(" tin tout");
 518
 519         for (i=0, printed = 0;(i < num_devices) && (printed < maxshowdevs);i++){
 520                 if ((dev_select[i].selected != 0)
 521                  && (dev_select[i].selected <= maxshowdevs)) {
 522                         if (oflag > 0) {
 523                                 if (Iflag == 0)
 524                                         printf(" sps tps msps ");
 525                                 else
 526                                         printf(" blk xfr msps ");
 527                         } else {
 528                                 if (Iflag == 0)
 529                                         printf("  KB/t tps  MB/s ");
 530                                 else
 531                                         printf("  KB/t xfrs   MB ");
 532                         }
 533                         printed++;
 534                 }
 535         }
 536         if ((dflag == 0) || (Cflag > 0))
 537                 printf(" us ni sy in id\n");
 538         else
 539                 printf("\n");
 540
 541 }
 542
 543 static void
 544 devstats(int perf_select)
 545 {
 546         int dn;
 547         long double transfers_per_second;
 548         long double kb_per_transfer, mb_per_second;
 549         u_int64_t total_bytes, total_transfers, total_blocks;
 550         long double busy_seconds;
 551         long double total_mb;
 552         long double blocks_per_second, ms_per_transaction;
 553
 554         /*
 555          * Calculate elapsed time up front, since it's the same for all
 556          * devices.
 557          */
 558         busy_seconds = compute_etime(cur.busy_time, last.busy_time);
 559
 560         for (dn = 0; dn < num_devices; dn++) {
 561                 int di;
 562
 563                 if (((perf_select == 0) && (dev_select[dn].selected == 0))
 564                  || (dev_select[dn].selected > maxshowdevs))
 565                         continue;
 566
 567                 di = dev_select[dn].position;
 568
 569                 if (compute_stats(&cur.dinfo->devices[di],
 570                                   &last.dinfo->devices[di], busy_seconds,
 571                                   &total_bytes, &total_transfers,
 572                                   &total_blocks, &kb_per_transfer,
 573                                   &transfers_per_second, &mb_per_second,
 574                                   &blocks_per_second, &ms_per_transaction)!= 0)
 575                         errx(1, "%s", devstat_errbuf);
 576
 577                 if (perf_select != 0) {
 578                         dev_select[dn].bytes = total_bytes;
 579                         if ((dev_select[dn].selected == 0)
 580                          || (dev_select[dn].selected > maxshowdevs))
 581                                 continue;
 582                 }
 583
 584                 if (Kflag) {
 585                         int block_size = cur.dinfo->devices[di].block_size;
 586                         total_blocks = total_blocks * (block_size ?
 587                                                        block_size : 512) / 1024;
 588                 }
 589
 590                 if (oflag > 0) {
 591                         int msdig = (ms_per_transaction < 100.0) ? 1 : 0;
 592
 593                         if (Iflag == 0)
 594                                 printf("%4.0Lf%4.0Lf%5.*Lf ",
 595                                        blocks_per_second,
 596                                        transfers_per_second,
 597                                        msdig,
 598                                        ms_per_transaction);
 599                         else
 600                                 printf("%4.1qu%4.1qu%5.*Lf ",
 601                                        total_blocks,
 602                                        total_transfers,
 603                                        msdig,
 604                                        ms_per_transaction);
 605                 } else {
 606                         if (Iflag == 0)
 607                                 printf(" %5.2Lf %3.0Lf %5.2Lf ",
 608                                        kb_per_transfer,
 609                                        transfers_per_second,
 610                                        mb_per_second);
 611                         else {
 612                                 total_mb = total_bytes;
 613                                 total_mb /= 1024 * 1024;
 614
 615                                 printf(" %5.2Lf %3.1qu %5.2Lf ",
 616                                        kb_per_transfer,
 617                                        total_transfers,
 618                                        total_mb);
 619                         }
 620                 }
 621         }
 622 }
 623
 624 static void
 625 cpustats(void)
 626 {
 627         if (cp_time_total == 0.0)
 628                 cp_time_total = 1.0;
 629
 630         printf(" %2.0f", 100. * diff_cp_time.cp_user / cp_time_total);
 631         printf(" %2.0f", 100. * diff_cp_time.cp_nice / cp_time_total);
 632         printf(" %2.0f", 100. * diff_cp_time.cp_sys / cp_time_total);
 633         printf(" %2.0f", 100. * diff_cp_time.cp_intr / cp_time_total);
 634         printf(" %2.0f", 100. * diff_cp_time.cp_idle / cp_time_total);
 635 }