1 /* 2 * Copyright (c) 1980, 1986, 1991, 1993 3 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 48 #include <sys/param.h> 49 #include <sys/time.h> 50 #include <sys/proc.h> 51 #include <sys/dkstat.h> 52 #include <sys/uio.h> 53 #include <sys/namei.h> 54 #include <sys/malloc.h> 55 #include <sys/signal.h> 56 #include <sys/fcntl.h> 57 #include <sys/ioctl.h> 58 #include <sys/sysctl.h> 59 #include <sys/vmmeter.h> 60 61 #include <vm/vm_param.h> 62 63 #include <ctype.h> 64 #include <devstat.h> 65 #include <err.h> 66 #include <errno.h> 67 #include <kvm.h> 68 #include <limits.h> 69 #include <nlist.h> 70 #include <paths.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <sysexits.h> 75 #include <time.h> 76 #include <unistd.h> 77 78 static char da[] = "da"; 79 80 static struct nlist namelist[] = { 81 #define X_CPTIME 0 82 { "_cp_time" }, 83 #define X_SUM 1 84 { "_cnt" }, 85 #define X_BOOTTIME 2 86 { "_boottime" }, 87 #define X_HZ 3 88 { "_hz" }, 89 #define X_STATHZ 4 90 { "_stathz" }, 91 #define X_NCHSTATS 5 92 { "_nchstats" }, 93 #define X_INTRNAMES 6 94 { "_intrnames" }, 95 #define X_EINTRNAMES 7 96 { "_eintrnames" }, 97 #define X_INTRCNT 8 98 { "_intrcnt" }, 99 #define X_EINTRCNT 9 100 { "_eintrcnt" }, 101 #ifdef notyet 102 #define X_DEFICIT 10 103 { "_deficit" }, 104 #define X_FORKSTAT 11 105 { "_forkstat" }, 106 #define X_REC 12 107 { "_rectime" }, 108 #define X_PGIN 13 109 { "_pgintime" }, 110 #define X_XSTATS 14 111 { "_xstats" }, 112 #define X_END 15 113 #else 114 #define X_END 10 115 #endif 116 { "" }, 117 }; 118 119 struct statinfo cur, last; 120 int num_devices, maxshowdevs; 121 long generation; 122 struct device_selection *dev_select; 123 int num_selected; 124 struct devstat_match *matches; 125 int num_matches = 0; 126 int num_devices_specified, num_selections; 127 long select_generation; 128 char **specified_devices; 129 devstat_select_mode select_mode; 130 131 struct vmmeter sum, osum; 132 133 int winlines = 20; 134 int nflag = 0; 135 136 kvm_t *kd; 137 138 #define FORKSTAT 0x01 139 #define INTRSTAT 0x02 140 #define MEMSTAT 0x04 141 #define SUMSTAT 0x08 142 #define TIMESTAT 0x10 143 #define VMSTAT 0x20 144 #define ZMEMSTAT 0x40 145 146 static void cpustats(void); 147 static void devstats(void); 148 static void dosysctl(char *); 149 static void domem(void); 150 static void dointr(void); 151 static void dosum(void); 152 static void dovmstat(u_int, int); 153 static void dozmem(void); 154 static void kread(int, void *, size_t); 155 static void needhdr(int); 156 static void printhdr(void); 157 static void usage(void); 158 159 static long pct(long, long); 160 static long getuptime(void); 161 162 char **getdrivedata(char **); 163 164 int 165 main(argc, argv) 166 int argc; 167 char **argv; 168 { 169 int c, todo; 170 u_int interval; 171 int reps; 172 char *memf, *nlistf; 173 char errbuf[_POSIX2_LINE_MAX]; 174 175 memf = nlistf = NULL; 176 interval = reps = todo = 0; 177 maxshowdevs = 2; 178 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 179 switch (c) { 180 case 'c': 181 reps = atoi(optarg); 182 break; 183 case 'f': 184 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 185 break; 186 case 'i': 187 todo |= INTRSTAT; 188 break; 189 case 'M': 190 memf = optarg; 191 break; 192 case 'm': 193 todo |= MEMSTAT; 194 break; 195 case 'N': 196 nlistf = optarg; 197 break; 198 case 'n': 199 nflag = 1; 200 maxshowdevs = atoi(optarg); 201 if (maxshowdevs < 0) 202 errx(1, "number of devices %d is < 0", 203 maxshowdevs); 204 break; 205 case 'p': 206 if (buildmatch(optarg, &matches, &num_matches) != 0) 207 errx(1, "%s", devstat_errbuf); 208 break; 209 case 's': 210 todo |= SUMSTAT; 211 break; 212 case 't': 213 #ifdef notyet 214 todo |= TIMESTAT; 215 #else 216 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 217 #endif 218 break; 219 case 'w': 220 interval = atoi(optarg); 221 break; 222 case 'z': 223 todo |= ZMEMSTAT; 224 break; 225 case '?': 226 default: 227 usage(); 228 } 229 } 230 argc -= optind; 231 argv += optind; 232 233 if (todo == 0) 234 todo = VMSTAT; 235 236 /* 237 * Discard setgid privileges if not the running kernel so that bad 238 * guys can't print interesting stuff from kernel memory. 239 */ 240 if (nlistf != NULL || memf != NULL) 241 setgid(getgid()); 242 243 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 244 if (kd == 0) 245 errx(1, "kvm_openfiles: %s", errbuf); 246 setgid(getgid()); 247 248 if ((c = kvm_nlist(kd, namelist)) != 0) { 249 if (c > 0) { 250 warnx("undefined symbols:"); 251 for (c = 0; 252 c < (int)(sizeof(namelist)/sizeof(namelist[0])); 253 c++) 254 if (namelist[c].n_type == 0) 255 (void)fprintf(stderr, " %s", 256 namelist[c].n_name); 257 (void)fputc('\n', stderr); 258 } else 259 warnx("kvm_nlist: %s", kvm_geterr(kd)); 260 exit(1); 261 } 262 263 if (todo & VMSTAT) { 264 struct winsize winsize; 265 266 /* 267 * Make sure that the userland devstat version matches the 268 * kernel devstat version. If not, exit and print a 269 * message informing the user of his mistake. 270 */ 271 if (checkversion() < 0) 272 errx(1, "%s", devstat_errbuf); 273 274 275 argv = getdrivedata(argv); 276 winsize.ws_row = 0; 277 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 278 if (winsize.ws_row > 0) 279 winlines = winsize.ws_row; 280 281 } 282 283 #define BACKWARD_COMPATIBILITY 284 #ifdef BACKWARD_COMPATIBILITY 285 if (*argv) { 286 interval = atoi(*argv); 287 if (*++argv) 288 reps = atoi(*argv); 289 } 290 #endif 291 292 if (interval) { 293 if (!reps) 294 reps = -1; 295 } else if (reps) 296 interval = 1; 297 298 #ifdef notyet 299 if (todo & FORKSTAT) 300 doforkst(); 301 #endif 302 if (todo & MEMSTAT) 303 domem(); 304 if (todo & ZMEMSTAT) 305 dozmem(); 306 if (todo & SUMSTAT) 307 dosum(); 308 #ifdef notyet 309 if (todo & TIMESTAT) 310 dotimes(); 311 #endif 312 if (todo & INTRSTAT) 313 dointr(); 314 if (todo & VMSTAT) 315 dovmstat(interval, reps); 316 exit(0); 317 } 318 319 char ** 320 getdrivedata(argv) 321 char **argv; 322 { 323 if ((num_devices = getnumdevs()) < 0) 324 errx(1, "%s", devstat_errbuf); 325 326 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 327 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 328 bzero(cur.dinfo, sizeof(struct devinfo)); 329 bzero(last.dinfo, sizeof(struct devinfo)); 330 331 if (getdevs(&cur) == -1) 332 errx(1, "%s", devstat_errbuf); 333 334 num_devices = cur.dinfo->numdevs; 335 generation = cur.dinfo->generation; 336 337 specified_devices = (char **)malloc(sizeof(char *)); 338 for (num_devices_specified = 0; *argv; ++argv) { 339 if (isdigit(**argv)) 340 break; 341 num_devices_specified++; 342 specified_devices = (char **)realloc(specified_devices, 343 sizeof(char *) * 344 num_devices_specified); 345 specified_devices[num_devices_specified - 1] = *argv; 346 } 347 dev_select = NULL; 348 349 if (nflag == 0 && maxshowdevs < num_devices_specified) 350 maxshowdevs = num_devices_specified; 351 352 /* 353 * People are generally only interested in disk statistics when 354 * they're running vmstat. So, that's what we're going to give 355 * them if they don't specify anything by default. We'll also give 356 * them any other random devices in the system so that we get to 357 * maxshowdevs devices, if that many devices exist. If the user 358 * specifies devices on the command line, either through a pattern 359 * match or by naming them explicitly, we will give the user only 360 * those devices. 361 */ 362 if ((num_devices_specified == 0) && (num_matches == 0)) { 363 if (buildmatch(da, &matches, &num_matches) != 0) 364 errx(1, "%s", devstat_errbuf); 365 366 select_mode = DS_SELECT_ADD; 367 } else 368 select_mode = DS_SELECT_ONLY; 369 370 /* 371 * At this point, selectdevs will almost surely indicate that the 372 * device list has changed, so we don't look for return values of 0 373 * or 1. If we get back -1, though, there is an error. 374 */ 375 if (selectdevs(&dev_select, &num_selected, &num_selections, 376 &select_generation, generation, cur.dinfo->devices, 377 num_devices, matches, num_matches, specified_devices, 378 num_devices_specified, select_mode, 379 maxshowdevs, 0) == -1) 380 errx(1, "%s", devstat_errbuf); 381 382 return(argv); 383 } 384 385 long 386 getuptime() 387 { 388 static time_t now, boottime; 389 time_t uptime; 390 391 if (boottime == 0) 392 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 393 (void)time(&now); 394 uptime = now - boottime; 395 if (uptime <= 0 || uptime > 60*60*24*365*10) 396 errx(1, "time makes no sense; namelist must be wrong"); 397 return(uptime); 398 } 399 400 int hz, hdrcnt; 401 402 void 403 dovmstat(interval, reps) 404 u_int interval; 405 int reps; 406 { 407 struct vmtotal total; 408 time_t uptime, halfuptime; 409 struct devinfo *tmp_dinfo; 410 int mib[2]; 411 size_t size; 412 413 uptime = getuptime(); 414 halfuptime = uptime / 2; 415 (void)signal(SIGCONT, needhdr); 416 417 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 418 kread(X_STATHZ, &hz, sizeof(hz)); 419 if (!hz) 420 kread(X_HZ, &hz, sizeof(hz)); 421 422 for (hdrcnt = 1;;) { 423 if (!--hdrcnt) 424 printhdr(); 425 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 426 427 tmp_dinfo = last.dinfo; 428 last.dinfo = cur.dinfo; 429 cur.dinfo = tmp_dinfo; 430 last.busy_time = cur.busy_time; 431 432 /* 433 * Here what we want to do is refresh our device stats. 434 * getdevs() returns 1 when the device list has changed. 435 * If the device list has changed, we want to go through 436 * the selection process again, in case a device that we 437 * were previously displaying has gone away. 438 */ 439 switch (getdevs(&cur)) { 440 case -1: 441 errx(1, "%s", devstat_errbuf); 442 break; 443 case 1: { 444 int retval; 445 446 num_devices = cur.dinfo->numdevs; 447 generation = cur.dinfo->generation; 448 449 retval = selectdevs(&dev_select, &num_selected, 450 &num_selections, &select_generation, 451 generation, cur.dinfo->devices, 452 num_devices, matches, num_matches, 453 specified_devices, 454 num_devices_specified, select_mode, 455 maxshowdevs, 0); 456 switch (retval) { 457 case -1: 458 errx(1, "%s", devstat_errbuf); 459 break; 460 case 1: 461 printhdr(); 462 break; 463 default: 464 break; 465 } 466 } 467 default: 468 break; 469 } 470 471 kread(X_SUM, &sum, sizeof(sum)); 472 size = sizeof(total); 473 mib[0] = CTL_VM; 474 mib[1] = VM_METER; 475 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 476 (void)printf("Can't get kerninfo: %s\n", 477 strerror(errno)); 478 bzero(&total, sizeof(total)); 479 } 480 (void)printf("%2d %1d %1d", 481 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 482 #define vmstat_pgtok(a) ((a) * sum.v_page_size >> 10) 483 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 484 (void)printf(" %7ld %6ld ", (long)vmstat_pgtok(total.t_avm), 485 (long)vmstat_pgtok(total.t_free)); 486 (void)printf("%4lu ", 487 (u_long)rate(sum.v_vm_faults - osum.v_vm_faults)); 488 (void)printf("%3lu ", 489 (u_long)rate(sum.v_reactivated - osum.v_reactivated)); 490 (void)printf("%3lu ", 491 (u_long)rate(sum.v_swapin + sum.v_vnodein - 492 (osum.v_swapin + osum.v_vnodein))); 493 (void)printf("%3lu ", 494 (u_long)rate(sum.v_swapout + sum.v_vnodeout - 495 (osum.v_swapout + osum.v_vnodeout))); 496 (void)printf("%3lu ", 497 (u_long)rate(sum.v_tfree - osum.v_tfree)); 498 (void)printf("%3lu ", 499 (u_long)rate(sum.v_pdpages - osum.v_pdpages)); 500 devstats(); 501 (void)printf("%4lu %4lu %3lu ", 502 (u_long)rate(sum.v_intr - osum.v_intr), 503 (u_long)rate(sum.v_syscall - osum.v_syscall), 504 (u_long)rate(sum.v_swtch - osum.v_swtch)); 505 cpustats(); 506 (void)printf("\n"); 507 (void)fflush(stdout); 508 if (reps >= 0 && --reps <= 0) 509 break; 510 osum = sum; 511 uptime = interval; 512 /* 513 * We round upward to avoid losing low-frequency events 514 * (i.e., >= 1 per interval but < 1 per second). 515 */ 516 if (interval != 1) 517 halfuptime = (uptime + 1) / 2; 518 else 519 halfuptime = 0; 520 (void)sleep(interval); 521 } 522 } 523 524 void 525 printhdr() 526 { 527 int i, num_shown; 528 529 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 530 (void)printf(" procs memory page%*s", 19, ""); 531 if (num_shown > 1) 532 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 533 else if (num_shown == 1) 534 (void)printf("disk"); 535 (void)printf(" faults cpu\n"); 536 (void)printf(" r b w avm fre flt re pi po fr sr "); 537 for (i = 0; i < num_devices; i++) 538 if ((dev_select[i].selected) 539 && (dev_select[i].selected <= maxshowdevs)) 540 (void)printf("%c%c%d ", dev_select[i].device_name[0], 541 dev_select[i].device_name[1], 542 dev_select[i].unit_number); 543 (void)printf(" in sy cs us sy id\n"); 544 hdrcnt = winlines - 2; 545 } 546 547 /* 548 * Force a header to be prepended to the next output. 549 */ 550 void 551 needhdr(dummy) 552 int dummy __unused; 553 { 554 555 hdrcnt = 1; 556 } 557 558 #ifdef notyet 559 void 560 dotimes() 561 { 562 u_int pgintime, rectime; 563 564 kread(X_REC, &rectime, sizeof(rectime)); 565 kread(X_PGIN, &pgintime, sizeof(pgintime)); 566 kread(X_SUM, &sum, sizeof(sum)); 567 (void)printf("%u reclaims, %u total time (usec)\n", 568 sum.v_pgrec, rectime); 569 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 570 (void)printf("\n"); 571 (void)printf("%u page ins, %u total time (msec)\n", 572 sum.v_pgin, pgintime / 10); 573 (void)printf("average: %8.1f msec / page in\n", 574 pgintime / (sum.v_pgin * 10.0)); 575 } 576 #endif 577 578 long 579 pct(top, bot) 580 long top, bot; 581 { 582 long ans; 583 584 if (bot == 0) 585 return(0); 586 ans = (quad_t)top * 100 / bot; 587 return (ans); 588 } 589 590 #define PCT(top, bot) pct((long)(top), (long)(bot)) 591 592 void 593 dosum() 594 { 595 struct nchstats lnchstats; 596 long nchtotal; 597 598 kread(X_SUM, &sum, sizeof(sum)); 599 (void)printf("%9u cpu context switches\n", sum.v_swtch); 600 (void)printf("%9u device interrupts\n", sum.v_intr); 601 (void)printf("%9u software interrupts\n", sum.v_soft); 602 (void)printf("%9u traps\n", sum.v_trap); 603 (void)printf("%9u system calls\n", sum.v_syscall); 604 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 605 (void)printf("%9u fork() calls\n", sum.v_forks); 606 (void)printf("%9u vfork() calls\n", sum.v_vforks); 607 (void)printf("%9u rfork() calls\n", sum.v_rforks); 608 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 609 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 610 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 611 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 612 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 613 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 614 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 615 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 616 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 617 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 618 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 619 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 620 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 621 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 622 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 623 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 624 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 625 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 626 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 627 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 628 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 629 (void)printf("%9u pages freed\n", sum.v_tfree); 630 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 631 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 632 (void)printf("%9u pages active\n", sum.v_active_count); 633 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 634 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 635 (void)printf("%9u pages wired down\n", sum.v_wire_count); 636 (void)printf("%9u pages free\n", sum.v_free_count); 637 (void)printf("%9u bytes per page\n", sum.v_page_size); 638 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats)); 639 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits + 640 lnchstats.ncs_badhits + lnchstats.ncs_falsehits + 641 lnchstats.ncs_miss + lnchstats.ncs_long; 642 (void)printf("%9ld total name lookups\n", nchtotal); 643 (void)printf( 644 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 645 "", PCT(lnchstats.ncs_goodhits, nchtotal), 646 PCT(lnchstats.ncs_neghits, nchtotal), 647 PCT(lnchstats.ncs_pass2, nchtotal)); 648 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 649 PCT(lnchstats.ncs_badhits, nchtotal), 650 PCT(lnchstats.ncs_falsehits, nchtotal), 651 PCT(lnchstats.ncs_long, nchtotal)); 652 } 653 654 #ifdef notyet 655 void 656 doforkst() 657 { 658 struct forkstat fks; 659 660 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 661 (void)printf("%d forks, %d pages, average %.2f\n", 662 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 663 (void)printf("%d vforks, %d pages, average %.2f\n", 664 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 665 } 666 #endif 667 668 static void 669 devstats() 670 { 671 int dn, state; 672 long double transfers_per_second; 673 long double busy_seconds; 674 long tmp; 675 676 for (state = 0; state < CPUSTATES; ++state) { 677 tmp = cur.cp_time[state]; 678 cur.cp_time[state] -= last.cp_time[state]; 679 last.cp_time[state] = tmp; 680 } 681 682 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 683 684 for (dn = 0; dn < num_devices; dn++) { 685 int di; 686 687 if ((dev_select[dn].selected == 0) 688 || (dev_select[dn].selected > maxshowdevs)) 689 continue; 690 691 di = dev_select[dn].position; 692 693 if (devstat_compute_statistics(&cur.dinfo->devices[di], 694 &last.dinfo->devices[di], busy_seconds, 695 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 696 DSM_NONE) != 0) 697 errx(1, "%s", devstat_errbuf); 698 699 (void)printf("%3.0Lf ", transfers_per_second); 700 } 701 } 702 703 void 704 cpustats() 705 { 706 int state; 707 double lpct, total; 708 709 total = 0; 710 for (state = 0; state < CPUSTATES; ++state) 711 total += cur.cp_time[state]; 712 if (total) 713 lpct = 100.0 / total; 714 else 715 lpct = 0.0; 716 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 717 cur.cp_time[CP_NICE]) * lpct); 718 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 719 cur.cp_time[CP_INTR]) * lpct); 720 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * lpct); 721 } 722 723 void 724 dointr() 725 { 726 u_long *intrcnt, uptime; 727 u_int64_t inttotal; 728 int nintr, inamlen; 729 char *intrname; 730 731 uptime = getuptime(); 732 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 733 inamlen = 734 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 735 intrcnt = malloc((size_t)nintr); 736 intrname = malloc((size_t)inamlen); 737 if (intrcnt == NULL || intrname == NULL) 738 errx(1, "malloc"); 739 kread(X_INTRCNT, intrcnt, (size_t)nintr); 740 kread(X_INTRNAMES, intrname, (size_t)inamlen); 741 (void)printf("interrupt total rate\n"); 742 inttotal = 0; 743 nintr /= sizeof(long); 744 while (--nintr >= 0) { 745 if (*intrcnt) 746 (void)printf("%-12s %20lu %10lu\n", intrname, 747 *intrcnt, *intrcnt / uptime); 748 intrname += strlen(intrname) + 1; 749 inttotal += *intrcnt++; 750 } 751 (void)printf("Total %20llu %10llu\n", inttotal, 752 inttotal / (u_int64_t) uptime); 753 } 754 755 void 756 domem(void) 757 { 758 dosysctl("kern.malloc"); 759 } 760 761 void 762 dozmem(void) 763 { 764 dosysctl("vm.zone"); 765 } 766 767 void 768 dosysctl(char *name) 769 { 770 char *buf; 771 size_t bufsize; 772 773 buf = NULL; 774 bufsize = 1024; 775 for (;;) { 776 if ((buf = realloc(buf, bufsize)) == NULL) 777 err(1, "realloc()"); 778 if (sysctlbyname(name, buf, &bufsize, 0, NULL) == 0) 779 break; 780 if (errno != ENOMEM) 781 err(1, "sysctl()"); 782 bufsize *= 2; 783 } 784 buf[bufsize] = '\0'; /* play it safe */ 785 (void)printf("%s\n\n", buf); 786 free(buf); 787 } 788 789 /* 790 * kread reads something from the kernel, given its nlist index. 791 */ 792 void 793 kread(nlx, addr, size) 794 int nlx; 795 void *addr; 796 size_t size; 797 { 798 char *sym; 799 800 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 801 sym = namelist[nlx].n_name; 802 if (*sym == '_') 803 ++sym; 804 errx(1, "symbol %s not defined", sym); 805 } 806 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (int)size) { 807 sym = namelist[nlx].n_name; 808 if (*sym == '_') 809 ++sym; 810 errx(1, "%s: %s", sym, kvm_geterr(kd)); 811 } 812 } 813 814 void 815 usage() 816 { 817 (void)fprintf(stderr, "%s%s", 818 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 819 " [-n devs] [disks]\n"); 820 exit(1); 821 } 822