vmstat.c revision 148630
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#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#if 0 41#ifndef lint 42static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 43#endif /* not lint */ 44#endif 45 46#include <sys/cdefs.h> 47__FBSDID("$FreeBSD: head/usr.bin/vmstat/vmstat.c 148630 2005-08-01 21:33:17Z rwatson $"); 48 49#include <sys/param.h> 50#include <sys/time.h> 51#include <sys/proc.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/resource.h> 59#include <sys/sysctl.h> 60#include <sys/vmmeter.h> 61 62#include <vm/vm_param.h> 63 64#include <ctype.h> 65#include <devstat.h> 66#include <err.h> 67#include <errno.h> 68#include <kvm.h> 69#include <limits.h> 70#include <memstat.h> 71#include <nlist.h> 72#include <paths.h> 73#include <stdio.h> 74#include <stdlib.h> 75#include <string.h> 76#include <sysexits.h> 77#include <time.h> 78#include <unistd.h> 79 80static char da[] = "da"; 81 82static struct nlist namelist[] = { 83#define X_CPTIME 0 84 { "_cp_time" }, 85#define X_SUM 1 86 { "_cnt" }, 87#define X_BOOTTIME 2 88 { "_boottime" }, 89#define X_HZ 3 90 { "_hz" }, 91#define X_STATHZ 4 92 { "_stathz" }, 93#define X_NCHSTATS 5 94 { "_nchstats" }, 95#define X_INTRNAMES 6 96 { "_intrnames" }, 97#define X_EINTRNAMES 7 98 { "_eintrnames" }, 99#define X_INTRCNT 8 100 { "_intrcnt" }, 101#define X_EINTRCNT 9 102 { "_eintrcnt" }, 103#define X_KMEMSTATS 10 104 { "_kmemstatistics" }, 105#define X_KMEMZONES 11 106 { "_kmemzones" }, 107#ifdef notyet 108#define X_DEFICIT XXX 109 { "_deficit" }, 110#define X_REC XXX 111 { "_rectime" }, 112#define X_PGIN XXX 113 { "_pgintime" }, 114#define X_XSTATS XXX 115 { "_xstats" }, 116#define X_END XXX 117#else 118#define X_END 12 119#endif 120 { "" }, 121}; 122 123static struct statinfo cur, last; 124static int num_devices, maxshowdevs; 125static long generation; 126static struct device_selection *dev_select; 127static int num_selected; 128static struct devstat_match *matches; 129static int num_matches = 0; 130static int num_devices_specified, num_selections; 131static long select_generation; 132static char **specified_devices; 133static devstat_select_mode select_mode; 134 135static struct vmmeter sum, osum; 136 137static int winlines = 20; 138static int aflag; 139static int nflag; 140 141static kvm_t *kd; 142 143#define FORKSTAT 0x01 144#define INTRSTAT 0x02 145#define MEMSTAT 0x04 146#define SUMSTAT 0x08 147#define TIMESTAT 0x10 148#define VMSTAT 0x20 149#define ZMEMSTAT 0x40 150 151static void cpustats(void); 152static void devstats(void); 153static void doforkst(void); 154static void domem(void); 155static void dointr(void); 156static void dosum(void); 157static void dovmstat(unsigned int, int); 158static void domemstat_zone(void); 159static void kread(int, void *, size_t); 160static void kreado(int, void *, size_t, size_t); 161static char *kgetstr(const char *); 162static void needhdr(int); 163static void printhdr(void); 164static void usage(void); 165 166static long pct(long, long); 167static long getuptime(void); 168 169static char **getdrivedata(char **); 170 171int 172main(int argc, char *argv[]) 173{ 174 int c, todo; 175 unsigned int interval; 176 int reps; 177 char *memf, *nlistf; 178 char errbuf[_POSIX2_LINE_MAX]; 179 180 memf = nlistf = NULL; 181 interval = reps = todo = 0; 182 maxshowdevs = 2; 183 while ((c = getopt(argc, argv, "ac:fiM:mN:n:p:stw:z")) != -1) { 184 switch (c) { 185 case 'a': 186 aflag++; 187 break; 188 case 'c': 189 reps = atoi(optarg); 190 break; 191 case 'f': 192 todo |= FORKSTAT; 193 break; 194 case 'i': 195 todo |= INTRSTAT; 196 break; 197 case 'M': 198 memf = optarg; 199 break; 200 case 'm': 201 todo |= MEMSTAT; 202 break; 203 case 'N': 204 nlistf = optarg; 205 break; 206 case 'n': 207 nflag = 1; 208 maxshowdevs = atoi(optarg); 209 if (maxshowdevs < 0) 210 errx(1, "number of devices %d is < 0", 211 maxshowdevs); 212 break; 213 case 'p': 214 if (devstat_buildmatch(optarg, &matches, &num_matches) != 0) 215 errx(1, "%s", devstat_errbuf); 216 break; 217 case 's': 218 todo |= SUMSTAT; 219 break; 220 case 't': 221#ifdef notyet 222 todo |= TIMESTAT; 223#else 224 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 225#endif 226 break; 227 case 'w': 228 interval = atoi(optarg); 229 break; 230 case 'z': 231 todo |= ZMEMSTAT; 232 break; 233 case '?': 234 default: 235 usage(); 236 } 237 } 238 argc -= optind; 239 argv += optind; 240 241 if (todo == 0) 242 todo = VMSTAT; 243 244 if (memf != NULL) { 245 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 246 if (kd == NULL) 247 errx(1, "kvm_openfiles: %s", errbuf); 248 } 249 250 if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) { 251 if (c > 0) { 252 warnx("undefined symbols:"); 253 for (c = 0; 254 c < (int)(sizeof(namelist)/sizeof(namelist[0])); 255 c++) 256 if (namelist[c].n_type == 0) 257 (void)fprintf(stderr, " %s", 258 namelist[c].n_name); 259 (void)fputc('\n', stderr); 260 } else 261 warnx("kvm_nlist: %s", kvm_geterr(kd)); 262 exit(1); 263 } 264 265 if (todo & VMSTAT) { 266 struct winsize winsize; 267 268 /* 269 * Make sure that the userland devstat version matches the 270 * kernel devstat version. If not, exit and print a 271 * message informing the user of his mistake. 272 */ 273 if (devstat_checkversion(NULL) < 0) 274 errx(1, "%s", devstat_errbuf); 275 276 277 argv = getdrivedata(argv); 278 winsize.ws_row = 0; 279 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 280 if (winsize.ws_row > 0) 281 winlines = winsize.ws_row; 282 283 } 284 285#define BACKWARD_COMPATIBILITY 286#ifdef BACKWARD_COMPATIBILITY 287 if (*argv) { 288 interval = atoi(*argv); 289 if (*++argv) 290 reps = atoi(*argv); 291 } 292#endif 293 294 if (interval) { 295 if (!reps) 296 reps = -1; 297 } else if (reps) 298 interval = 1; 299 300 if (todo & FORKSTAT) 301 doforkst(); 302 if (todo & MEMSTAT) 303 domem(); 304 if (todo & ZMEMSTAT) 305 domemstat_zone(); 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 319static int 320mysysctl(const char *name, void *oldp, size_t *oldlenp, 321 void *newp, size_t newlen) 322{ 323 int error; 324 325 error = sysctlbyname(name, oldp, oldlenp, newp, newlen); 326 if (error != 0 && errno != ENOMEM) 327 err(1, "sysctl(%s)", name); 328 return (error); 329} 330 331static char ** 332getdrivedata(char **argv) 333{ 334 if ((num_devices = devstat_getnumdevs(NULL)) < 0) 335 errx(1, "%s", devstat_errbuf); 336 337 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 338 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 339 bzero(cur.dinfo, sizeof(struct devinfo)); 340 bzero(last.dinfo, sizeof(struct devinfo)); 341 342 if (devstat_getdevs(NULL, &cur) == -1) 343 errx(1, "%s", devstat_errbuf); 344 345 num_devices = cur.dinfo->numdevs; 346 generation = cur.dinfo->generation; 347 348 specified_devices = (char **)malloc(sizeof(char *)); 349 for (num_devices_specified = 0; *argv; ++argv) { 350 if (isdigit(**argv)) 351 break; 352 num_devices_specified++; 353 specified_devices = (char **)realloc(specified_devices, 354 sizeof(char *) * 355 num_devices_specified); 356 specified_devices[num_devices_specified - 1] = *argv; 357 } 358 dev_select = NULL; 359 360 if (nflag == 0 && maxshowdevs < num_devices_specified) 361 maxshowdevs = num_devices_specified; 362 363 /* 364 * People are generally only interested in disk statistics when 365 * they're running vmstat. So, that's what we're going to give 366 * them if they don't specify anything by default. We'll also give 367 * them any other random devices in the system so that we get to 368 * maxshowdevs devices, if that many devices exist. If the user 369 * specifies devices on the command line, either through a pattern 370 * match or by naming them explicitly, we will give the user only 371 * those devices. 372 */ 373 if ((num_devices_specified == 0) && (num_matches == 0)) { 374 if (devstat_buildmatch(da, &matches, &num_matches) != 0) 375 errx(1, "%s", devstat_errbuf); 376 377 select_mode = DS_SELECT_ADD; 378 } else 379 select_mode = DS_SELECT_ONLY; 380 381 /* 382 * At this point, selectdevs will almost surely indicate that the 383 * device list has changed, so we don't look for return values of 0 384 * or 1. If we get back -1, though, there is an error. 385 */ 386 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, 387 &select_generation, generation, cur.dinfo->devices, 388 num_devices, matches, num_matches, specified_devices, 389 num_devices_specified, select_mode, 390 maxshowdevs, 0) == -1) 391 errx(1, "%s", devstat_errbuf); 392 393 return(argv); 394} 395 396static long 397getuptime(void) 398{ 399 static struct timeval boottime; 400 static time_t now; 401 time_t uptime; 402 403 if (boottime.tv_sec == 0) { 404 if (kd != NULL) { 405 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 406 } else { 407 size_t size; 408 409 size = sizeof(boottime); 410 mysysctl("kern.boottime", &boottime, &size, NULL, 0); 411 if (size != sizeof(boottime)) 412 errx(1, "kern.boottime size mismatch"); 413 } 414 } 415 (void)time(&now); 416 uptime = now - boottime.tv_sec; 417 if (uptime <= 0 || uptime > 60*60*24*365*10) 418 errx(1, "time makes no sense; namelist must be wrong"); 419 return(uptime); 420} 421 422static void 423fill_vmmeter(struct vmmeter *vmmp) 424{ 425 if (kd != NULL) { 426 kread(X_SUM, vmmp, sizeof(*vmmp)); 427 } else { 428 size_t size = sizeof(unsigned int); 429#define GET_VM_STATS(cat, name) \ 430 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0) 431 /* sys */ 432 GET_VM_STATS(sys, v_swtch); 433 GET_VM_STATS(sys, v_trap); 434 GET_VM_STATS(sys, v_syscall); 435 GET_VM_STATS(sys, v_intr); 436 GET_VM_STATS(sys, v_soft); 437 438 /* vm */ 439 GET_VM_STATS(vm, v_vm_faults); 440 GET_VM_STATS(vm, v_cow_faults); 441 GET_VM_STATS(vm, v_cow_optim); 442 GET_VM_STATS(vm, v_zfod); 443 GET_VM_STATS(vm, v_ozfod); 444 GET_VM_STATS(vm, v_swapin); 445 GET_VM_STATS(vm, v_swapout); 446 GET_VM_STATS(vm, v_swappgsin); 447 GET_VM_STATS(vm, v_swappgsout); 448 GET_VM_STATS(vm, v_vnodein); 449 GET_VM_STATS(vm, v_vnodeout); 450 GET_VM_STATS(vm, v_vnodepgsin); 451 GET_VM_STATS(vm, v_vnodepgsout); 452 GET_VM_STATS(vm, v_intrans); 453 GET_VM_STATS(vm, v_reactivated); 454 GET_VM_STATS(vm, v_pdwakeups); 455 GET_VM_STATS(vm, v_pdpages); 456 GET_VM_STATS(vm, v_dfree); 457 GET_VM_STATS(vm, v_pfree); 458 GET_VM_STATS(vm, v_tfree); 459 GET_VM_STATS(vm, v_page_size); 460 GET_VM_STATS(vm, v_page_count); 461 GET_VM_STATS(vm, v_free_reserved); 462 GET_VM_STATS(vm, v_free_target); 463 GET_VM_STATS(vm, v_free_min); 464 GET_VM_STATS(vm, v_free_count); 465 GET_VM_STATS(vm, v_wire_count); 466 GET_VM_STATS(vm, v_active_count); 467 GET_VM_STATS(vm, v_inactive_target); 468 GET_VM_STATS(vm, v_inactive_count); 469 GET_VM_STATS(vm, v_cache_count); 470 GET_VM_STATS(vm, v_cache_min); 471 GET_VM_STATS(vm, v_cache_max); 472 GET_VM_STATS(vm, v_pageout_free_min); 473 GET_VM_STATS(vm, v_interrupt_free_min); 474 /*GET_VM_STATS(vm, v_free_severe);*/ 475 GET_VM_STATS(vm, v_forks); 476 GET_VM_STATS(vm, v_vforks); 477 GET_VM_STATS(vm, v_rforks); 478 GET_VM_STATS(vm, v_kthreads); 479 GET_VM_STATS(vm, v_forkpages); 480 GET_VM_STATS(vm, v_vforkpages); 481 GET_VM_STATS(vm, v_rforkpages); 482 GET_VM_STATS(vm, v_kthreadpages); 483#undef GET_VM_STATS 484 } 485} 486 487static void 488fill_vmtotal(struct vmtotal *vmtp) 489{ 490 if (kd != NULL) { 491 /* XXX fill vmtp */ 492 errx(1, "not implemented"); 493 } else { 494 size_t size = sizeof(*vmtp); 495 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0); 496 if (size != sizeof(*vmtp)) 497 errx(1, "vm.total size mismatch"); 498 } 499} 500 501static int hz, hdrcnt; 502 503static void 504dovmstat(unsigned int interval, int reps) 505{ 506 struct vmtotal total; 507 time_t uptime, halfuptime; 508 struct devinfo *tmp_dinfo; 509 size_t size; 510 511 uptime = getuptime(); 512 halfuptime = uptime / 2; 513 (void)signal(SIGCONT, needhdr); 514 515 if (kd != NULL) { 516 if (namelist[X_STATHZ].n_type != 0 && 517 namelist[X_STATHZ].n_value != 0) 518 kread(X_STATHZ, &hz, sizeof(hz)); 519 if (!hz) 520 kread(X_HZ, &hz, sizeof(hz)); 521 } else { 522 struct clockinfo clockrate; 523 524 size = sizeof(clockrate); 525 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0); 526 if (size != sizeof(clockrate)) 527 errx(1, "clockrate size mismatch"); 528 hz = clockrate.hz; 529 } 530 531 for (hdrcnt = 1;;) { 532 if (!--hdrcnt) 533 printhdr(); 534 if (kd != NULL) { 535 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 536 } else { 537 size = sizeof(cur.cp_time); 538 mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0); 539 if (size != sizeof(cur.cp_time)) 540 errx(1, "cp_time size mismatch"); 541 } 542 543 tmp_dinfo = last.dinfo; 544 last.dinfo = cur.dinfo; 545 cur.dinfo = tmp_dinfo; 546 last.snap_time = cur.snap_time; 547 548 /* 549 * Here what we want to do is refresh our device stats. 550 * getdevs() returns 1 when the device list has changed. 551 * If the device list has changed, we want to go through 552 * the selection process again, in case a device that we 553 * were previously displaying has gone away. 554 */ 555 switch (devstat_getdevs(NULL, &cur)) { 556 case -1: 557 errx(1, "%s", devstat_errbuf); 558 break; 559 case 1: { 560 int retval; 561 562 num_devices = cur.dinfo->numdevs; 563 generation = cur.dinfo->generation; 564 565 retval = devstat_selectdevs(&dev_select, &num_selected, 566 &num_selections, &select_generation, 567 generation, cur.dinfo->devices, 568 num_devices, matches, num_matches, 569 specified_devices, 570 num_devices_specified, select_mode, 571 maxshowdevs, 0); 572 switch (retval) { 573 case -1: 574 errx(1, "%s", devstat_errbuf); 575 break; 576 case 1: 577 printhdr(); 578 break; 579 default: 580 break; 581 } 582 } 583 default: 584 break; 585 } 586 587 fill_vmmeter(&sum); 588 fill_vmtotal(&total); 589 (void)printf("%2d %1d %1d", 590 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 591#define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10)) 592#define rate(x) (((x) + halfuptime) / uptime) /* round */ 593 (void)printf(" %7ld %6ld ", (long)vmstat_pgtok(total.t_avm), 594 (long)vmstat_pgtok(total.t_free)); 595 (void)printf("%4lu ", 596 (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults)); 597 (void)printf("%3lu ", 598 (unsigned long)rate(sum.v_reactivated - osum.v_reactivated)); 599 (void)printf("%3lu ", 600 (unsigned long)rate(sum.v_swapin + sum.v_vnodein - 601 (osum.v_swapin + osum.v_vnodein))); 602 (void)printf("%3lu ", 603 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout - 604 (osum.v_swapout + osum.v_vnodeout))); 605 (void)printf("%3lu ", 606 (unsigned long)rate(sum.v_tfree - osum.v_tfree)); 607 (void)printf("%3lu ", 608 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages)); 609 devstats(); 610 (void)printf("%4lu %4lu %3lu ", 611 (unsigned long)rate(sum.v_intr - osum.v_intr), 612 (unsigned long)rate(sum.v_syscall - osum.v_syscall), 613 (unsigned long)rate(sum.v_swtch - osum.v_swtch)); 614 cpustats(); 615 (void)printf("\n"); 616 (void)fflush(stdout); 617 if (reps >= 0 && --reps <= 0) 618 break; 619 osum = sum; 620 uptime = interval; 621 /* 622 * We round upward to avoid losing low-frequency events 623 * (i.e., >= 1 per interval but < 1 per second). 624 */ 625 if (interval != 1) 626 halfuptime = (uptime + 1) / 2; 627 else 628 halfuptime = 0; 629 (void)sleep(interval); 630 } 631} 632 633static void 634printhdr(void) 635{ 636 int i, num_shown; 637 638 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 639 (void)printf(" procs memory page%*s", 19, ""); 640 if (num_shown > 1) 641 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 642 else if (num_shown == 1) 643 (void)printf("disk"); 644 (void)printf(" faults cpu\n"); 645 (void)printf(" r b w avm fre flt re pi po fr sr "); 646 for (i = 0; i < num_devices; i++) 647 if ((dev_select[i].selected) 648 && (dev_select[i].selected <= maxshowdevs)) 649 (void)printf("%c%c%d ", dev_select[i].device_name[0], 650 dev_select[i].device_name[1], 651 dev_select[i].unit_number); 652 (void)printf(" in sy cs us sy id\n"); 653 hdrcnt = winlines - 2; 654} 655 656/* 657 * Force a header to be prepended to the next output. 658 */ 659static void 660needhdr(int dummy __unused) 661{ 662 663 hdrcnt = 1; 664} 665 666#ifdef notyet 667static void 668dotimes(void) 669{ 670 unsigned int pgintime, rectime; 671 672 kread(X_REC, &rectime, sizeof(rectime)); 673 kread(X_PGIN, &pgintime, sizeof(pgintime)); 674 kread(X_SUM, &sum, sizeof(sum)); 675 (void)printf("%u reclaims, %u total time (usec)\n", 676 sum.v_pgrec, rectime); 677 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 678 (void)printf("\n"); 679 (void)printf("%u page ins, %u total time (msec)\n", 680 sum.v_pgin, pgintime / 10); 681 (void)printf("average: %8.1f msec / page in\n", 682 pgintime / (sum.v_pgin * 10.0)); 683} 684#endif 685 686static long 687pct(long top, long bot) 688{ 689 long ans; 690 691 if (bot == 0) 692 return(0); 693 ans = (quad_t)top * 100 / bot; 694 return (ans); 695} 696 697#define PCT(top, bot) pct((long)(top), (long)(bot)) 698 699static void 700dosum(void) 701{ 702 struct nchstats lnchstats; 703 long nchtotal; 704 705 fill_vmmeter(&sum); 706 (void)printf("%9u cpu context switches\n", sum.v_swtch); 707 (void)printf("%9u device interrupts\n", sum.v_intr); 708 (void)printf("%9u software interrupts\n", sum.v_soft); 709 (void)printf("%9u traps\n", sum.v_trap); 710 (void)printf("%9u system calls\n", sum.v_syscall); 711 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 712 (void)printf("%9u fork() calls\n", sum.v_forks); 713 (void)printf("%9u vfork() calls\n", sum.v_vforks); 714 (void)printf("%9u rfork() calls\n", sum.v_rforks); 715 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 716 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 717 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 718 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 719 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 720 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 721 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 722 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 723 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 724 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 725 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 726 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 727 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 728 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 729 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 730 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 731 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 732 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 733 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 734 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 735 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 736 (void)printf("%9u pages freed\n", sum.v_tfree); 737 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 738 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 739 (void)printf("%9u pages active\n", sum.v_active_count); 740 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 741 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 742 (void)printf("%9u pages wired down\n", sum.v_wire_count); 743 (void)printf("%9u pages free\n", sum.v_free_count); 744 (void)printf("%9u bytes per page\n", sum.v_page_size); 745 if (kd != NULL) { 746 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats)); 747 } else { 748 size_t size = sizeof(lnchstats); 749 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0); 750 if (size != sizeof(lnchstats)) 751 errx(1, "vfs.cache.nchstats size mismatch"); 752 } 753 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits + 754 lnchstats.ncs_badhits + lnchstats.ncs_falsehits + 755 lnchstats.ncs_miss + lnchstats.ncs_long; 756 (void)printf("%9ld total name lookups\n", nchtotal); 757 (void)printf( 758 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 759 "", PCT(lnchstats.ncs_goodhits, nchtotal), 760 PCT(lnchstats.ncs_neghits, nchtotal), 761 PCT(lnchstats.ncs_pass2, nchtotal)); 762 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 763 PCT(lnchstats.ncs_badhits, nchtotal), 764 PCT(lnchstats.ncs_falsehits, nchtotal), 765 PCT(lnchstats.ncs_long, nchtotal)); 766} 767 768static void 769doforkst(void) 770{ 771 fill_vmmeter(&sum); 772 (void)printf("%u forks, %u pages, average %.2f\n", 773 sum.v_forks, sum.v_forkpages, 774 sum.v_forks == 0 ? 0.0 : 775 (double)sum.v_forkpages / sum.v_forks); 776 (void)printf("%u vforks, %u pages, average %.2f\n", 777 sum.v_vforks, sum.v_vforkpages, 778 sum.v_vforks == 0 ? 0.0 : 779 (double)sum.v_vforkpages / sum.v_vforks); 780 (void)printf("%u rforks, %u pages, average %.2f\n", 781 sum.v_rforks, sum.v_rforkpages, 782 sum.v_rforks == 0 ? 0.0 : 783 (double)sum.v_rforkpages / sum.v_rforks); 784} 785 786static void 787devstats(void) 788{ 789 int dn, state; 790 long double transfers_per_second; 791 long double busy_seconds; 792 long tmp; 793 794 for (state = 0; state < CPUSTATES; ++state) { 795 tmp = cur.cp_time[state]; 796 cur.cp_time[state] -= last.cp_time[state]; 797 last.cp_time[state] = tmp; 798 } 799 800 busy_seconds = cur.snap_time - last.snap_time; 801 802 for (dn = 0; dn < num_devices; dn++) { 803 int di; 804 805 if ((dev_select[dn].selected == 0) 806 || (dev_select[dn].selected > maxshowdevs)) 807 continue; 808 809 di = dev_select[dn].position; 810 811 if (devstat_compute_statistics(&cur.dinfo->devices[di], 812 &last.dinfo->devices[di], busy_seconds, 813 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 814 DSM_NONE) != 0) 815 errx(1, "%s", devstat_errbuf); 816 817 (void)printf("%3.0Lf ", transfers_per_second); 818 } 819} 820 821static void 822cpustats(void) 823{ 824 int state; 825 double lpct, total; 826 827 total = 0; 828 for (state = 0; state < CPUSTATES; ++state) 829 total += cur.cp_time[state]; 830 if (total) 831 lpct = 100.0 / total; 832 else 833 lpct = 0.0; 834 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 835 cur.cp_time[CP_NICE]) * lpct); 836 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 837 cur.cp_time[CP_INTR]) * lpct); 838 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * lpct); 839} 840 841static void 842dointr(void) 843{ 844 unsigned long *intrcnt, uptime; 845 uint64_t inttotal; 846 size_t clen, inamlen, intrcntlen, istrnamlen; 847 unsigned int i, nintr; 848 char *intrname, *tintrname; 849 850 uptime = getuptime(); 851 if (kd != NULL) { 852 intrcntlen = namelist[X_EINTRCNT].n_value - 853 namelist[X_INTRCNT].n_value; 854 inamlen = namelist[X_EINTRNAMES].n_value - 855 namelist[X_INTRNAMES].n_value; 856 if ((intrcnt = malloc(intrcntlen)) == NULL || 857 (intrname = malloc(inamlen)) == NULL) 858 err(1, "malloc()"); 859 kread(X_INTRCNT, intrcnt, intrcntlen); 860 kread(X_INTRNAMES, intrname, inamlen); 861 } else { 862 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) { 863 if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL) 864 err(1, "reallocf()"); 865 if (mysysctl("hw.intrcnt", 866 intrcnt, &intrcntlen, NULL, 0) == 0) 867 break; 868 } 869 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) { 870 if ((intrname = reallocf(intrname, inamlen)) == NULL) 871 err(1, "reallocf()"); 872 if (mysysctl("hw.intrnames", 873 intrname, &inamlen, NULL, 0) == 0) 874 break; 875 } 876 } 877 nintr = intrcntlen / sizeof(unsigned long); 878 tintrname = intrname; 879 istrnamlen = strlen("interrupt"); 880 for (i = 0; i < nintr; i++) { 881 clen = strlen(tintrname); 882 if (clen > istrnamlen) 883 istrnamlen = clen; 884 tintrname += clen + 1; 885 } 886 (void)printf("%-*s %20s %10s\n", istrnamlen, "interrupt", "total", 887 "rate"); 888 inttotal = 0; 889 for (i = 0; i < nintr; i++) { 890 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) 891 (void)printf("%-*s %20lu %10lu\n", istrnamlen, intrname, 892 *intrcnt, *intrcnt / uptime); 893 intrname += strlen(intrname) + 1; 894 inttotal += *intrcnt++; 895 } 896 (void)printf("%-*s %20llu %10llu\n", istrnamlen, "Total", 897 (long long)inttotal, (long long)(inttotal / uptime)); 898} 899 900static void 901domemstat_malloc(void) 902{ 903 struct memory_type_list *mtlp; 904 struct memory_type *mtp; 905 int first, i; 906 907 mtlp = memstat_mtl_alloc(); 908 if (mtlp == NULL) { 909 warn("memstat_mtl_alloc"); 910 return; 911 } 912 if (memstat_sysctl_malloc(mtlp, 0) < 0) { 913 warnx("memstat_sysctl_malloc: %s", 914 memstat_strerror(memstat_mtl_geterror(mtlp))); 915 return; 916 } 917 printf("%13s %5s %6s %7s %8s Size(s)\n", "Type", "InUse", "MemUse", 918 "HighUse", "Requests"); 919 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 920 mtp = memstat_mtl_next(mtp)) { 921 if (memstat_get_numallocs(mtp) == 0 && 922 memstat_get_count(mtp) == 0) 923 continue; 924 printf("%13s %5lld %5lldK %7s %8lld ", 925 memstat_get_name(mtp), memstat_get_count(mtp), 926 ((int64_t)memstat_get_bytes(mtp) + 1023) / 1024, "-", 927 memstat_get_numallocs(mtp)); 928 first = 1; 929 for (i = 0; i < 32; i++) { 930 if (memstat_get_sizemask(mtp) & (1 << i)) { 931 if (!first) 932 printf(","); 933 printf("%d", 1 << (i + 4)); 934 first = 0; 935 } 936 } 937 printf("\n"); 938 } 939 memstat_mtl_free(mtlp); 940} 941 942static void 943domemstat_zone(void) 944{ 945 struct memory_type_list *mtlp; 946 struct memory_type *mtp; 947 char name[MEMTYPE_MAXNAME + 1]; 948 int error; 949 950 mtlp = memstat_mtl_alloc(); 951 if (mtlp == NULL) { 952 warn("memstat_mtl_alloc"); 953 return; 954 } 955 if (kd == NULL) { 956 if (memstat_sysctl_uma(mtlp, 0) < 0) { 957 warnx("memstat_sysctl_uma: %s", 958 memstat_strerror(memstat_mtl_geterror(mtlp))); 959 return; 960 } 961 } else { 962 if (memstat_kvm_uma(mtlp, kd) < 0) { 963 error = memstat_mtl_geterror(mtlp); 964 if (error == MEMSTAT_ERROR_KVM) 965 warnx("memstat_kvm_uma: %s", 966 kvm_geterr(kd)); 967 else 968 warnx("memstat_kvm_uma: %s", 969 memstat_strerror(error)); 970 } 971 } 972 printf("%-15s %-8s %-9s %-7s %-5s %-8s\n\n", "ITEM", "SIZE", "LIMIT", 973 "USED", "FREE", "REQUESTS"); 974 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 975 mtp = memstat_mtl_next(mtp)) { 976 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME); 977 strcat(name, ":"); 978 printf("%-15s %4llu, %8llu, %7llu, %6llu, %8llu\n", name, 979 memstat_get_size(mtp), memstat_get_countlimit(mtp), 980 memstat_get_count(mtp), memstat_get_free(mtp), 981 memstat_get_numallocs(mtp)); 982 } 983 memstat_mtl_free(mtlp); 984 printf("\n"); 985} 986 987/* 988 * domem() replicates the kernel implementation of kern.malloc by inspecting 989 * kernel data structures, which is appropriate for use on a core dump. 990 * domem() must identify the set of malloc types, walk the list, and coalesce 991 * per-CPU state to report. It relies on direct access to internal kernel 992 * data structures that have a fragile (and intentionally unexposed) ABI. 993 * This logic should not be used by live monitoring tools, which should 994 * instead rely solely on the sysctl interface. 995 */ 996static void 997domem(void) 998{ 999 struct malloc_type_stats mts_local, *mts; 1000 struct malloc_type_internal mti; 1001 struct malloc_type type; 1002 int i; 1003 1004 if (kd == NULL) { 1005 domemstat_malloc(); 1006 return; 1007 } 1008 kread(X_KMEMSTATS, &type.ks_next, sizeof(type.ks_next)); 1009 (void)printf("\n Type InUse MemUse HighUse Requests" 1010 " Size(s)\n"); 1011 do { 1012 /* XXX this should be exported in sys/malloc.h */ 1013 struct { 1014 int kz_size; 1015 char *kz_name; 1016 /* uma_zone_t */ void *kz_zone; 1017 } kz; 1018 size_t kmemzonenum; 1019 char *str; 1020 int first; 1021 1022 if (kvm_read(kd, (u_long)type.ks_next, &type, sizeof(type)) != 1023 sizeof(type)) 1024 errx(1, "%s: %p: %s", __func__, type.ks_next, 1025 kvm_geterr(kd)); 1026 if (kvm_read(kd, (u_long)type.ks_handle, &mti, sizeof(mti)) != 1027 sizeof(mti)) 1028 errx(1, "%s: %p: %s", __func__, type.ks_handle, 1029 kvm_geterr(kd)); 1030 1031 bzero(&mts_local, sizeof(mts_local)); 1032 for (i = 0; i < MAXCPU; i++) { 1033 mts = &mti.mti_stats[i]; 1034 mts_local.mts_memalloced += mts->mts_memalloced; 1035 mts_local.mts_memfreed += mts->mts_memfreed; 1036 mts_local.mts_numallocs += mts->mts_numallocs; 1037 mts_local.mts_numfrees += mts->mts_numfrees; 1038 mts_local.mts_size |= mts->mts_size; 1039 } 1040 if (mts_local.mts_numallocs == 0) 1041 continue; 1042 1043 /* 1044 * Unlike in kern_malloc.c, we don't mask inter-CPU races, as * vmstat on a core is likely for debugging purposes. 1045 */ 1046 1047 str = kgetstr(type.ks_shortdesc); 1048 (void)printf("%13s%6lu%6luK -%9llu", 1049 str, 1050 mts_local.mts_numallocs - mts_local.mts_numfrees, 1051 ((mts_local.mts_memalloced - mts_local.mts_memfreed) + 1052 1023) / 1024, 1053 mts_local.mts_numallocs); 1054 free(str); 1055 for (kmemzonenum = 0, first = 1; ; kmemzonenum++) { 1056 kreado(X_KMEMZONES, &kz, sizeof(kz), 1057 kmemzonenum * sizeof(kz)); 1058 if (kz.kz_name == NULL) { 1059 (void)printf("\n"); 1060 break; 1061 } 1062 if (!(mts_local.mts_size & (1 << kmemzonenum))) 1063 continue; 1064 if (first) 1065 (void)printf(" "); 1066 else 1067 (void)printf(","); 1068 first = 0; 1069 str = kgetstr(kz.kz_name); 1070 (void)printf("%s", str); 1071 free(str); 1072 } 1073 } while (type.ks_next != NULL); 1074} 1075 1076/* 1077 * kread reads something from the kernel, given its nlist index. 1078 */ 1079static void 1080kreado(int nlx, void *addr, size_t size, size_t offset) 1081{ 1082 const char *sym; 1083 1084 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 1085 sym = namelist[nlx].n_name; 1086 if (*sym == '_') 1087 ++sym; 1088 errx(1, "symbol %s not defined", sym); 1089 } 1090 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr, 1091 size) != size) { 1092 sym = namelist[nlx].n_name; 1093 if (*sym == '_') 1094 ++sym; 1095 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1096 } 1097} 1098 1099static void 1100kread(int nlx, void *addr, size_t size) 1101{ 1102 kreado(nlx, addr, size, 0); 1103} 1104 1105static char * 1106kgetstr(const char *strp) 1107{ 1108 int n = 0, size = 1; 1109 char *ret = NULL; 1110 1111 do { 1112 if (size == n + 1) { 1113 ret = realloc(ret, size); 1114 if (ret == NULL) 1115 err(1, "%s: realloc", __func__); 1116 size *= 2; 1117 } 1118 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1) 1119 errx(1, "%s: %s", __func__, kvm_geterr(kd)); 1120 } while (ret[n++] != '\0'); 1121 return (ret); 1122} 1123 1124static void 1125usage(void) 1126{ 1127 (void)fprintf(stderr, "%s%s", 1128 "usage: vmstat [-afimsz] [-c count] [-M core [-N system]] [-w wait]\n", 1129 " [-n devs] [-p type,if,pass] [disks]\n"); 1130 exit(1); 1131} 1132