vmstat.c revision 5463
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 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#ifndef lint 41static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 42#endif /* not lint */ 43 44#include <sys/param.h> 45#include <sys/time.h> 46#include <sys/proc.h> 47#include <sys/user.h> 48#include <sys/dkstat.h> 49#include <sys/buf.h> 50#include <sys/namei.h> 51#include <sys/malloc.h> 52#include <sys/signal.h> 53#include <sys/fcntl.h> 54#include <sys/ioctl.h> 55#include <sys/sysctl.h> 56#include <vm/vm.h> 57#include <time.h> 58#include <nlist.h> 59#include <kvm.h> 60#include <errno.h> 61#include <unistd.h> 62#include <stdio.h> 63#include <ctype.h> 64#include <stdlib.h> 65#include <string.h> 66#include <paths.h> 67#include <limits.h> 68 69struct nlist namelist[] = { 70#define X_CPTIME 0 71 { "_cp_time" }, 72#define X_DK_NDRIVE 1 73 { "_dk_ndrive" }, 74#define X_SUM 2 75 { "_cnt" }, 76#define X_BOOTTIME 3 77 { "_boottime" }, 78#define X_DKXFER 4 79 { "_dk_xfer" }, 80#define X_HZ 5 81 { "_hz" }, 82#define X_STATHZ 6 83 { "_stathz" }, 84#define X_NCHSTATS 7 85 { "_nchstats" }, 86#define X_INTRNAMES 8 87 { "_intrnames" }, 88#define X_EINTRNAMES 9 89 { "_eintrnames" }, 90#define X_INTRCNT 10 91 { "_intrcnt" }, 92#define X_EINTRCNT 11 93 { "_eintrcnt" }, 94#define X_KMEMSTAT 12 95 { "_kmemstats" }, 96#define X_KMEMBUCKETS 13 97 { "_bucket" }, 98#ifdef notdef 99#define X_DEFICIT 14 100 { "_deficit" }, 101#define X_FORKSTAT 15 102 { "_forkstat" }, 103#define X_REC 16 104 { "_rectime" }, 105#define X_PGIN 17 106 { "_pgintime" }, 107#define X_XSTATS 18 108 { "_xstats" }, 109#define X_END 19 110#else 111#define X_END 14 112#endif 113#if defined(hp300) || defined(luna68k) 114#define X_HPDINIT (X_END) 115 { "_hp_dinit" }, 116#endif 117#if defined(i386) 118#define X_DK_NAMES (X_END) 119 { "_dk_names" }, 120#endif 121#ifdef mips 122#define X_SCSI_DINIT (X_END) 123 { "_scsi_dinit" }, 124#endif 125#ifdef tahoe 126#define X_VBDINIT (X_END) 127 { "_vbdinit" }, 128#define X_CKEYSTATS (X_END+1) 129 { "_ckeystats" }, 130#define X_DKEYSTATS (X_END+2) 131 { "_dkeystats" }, 132#endif 133#ifdef vax 134#define X_MBDINIT (X_END) 135 { "_mbdinit" }, 136#define X_UBDINIT (X_END+1) 137 { "_ubdinit" }, 138#endif 139 { "" }, 140}; 141 142struct _disk { 143 long time[CPUSTATES]; 144 long *xfer; 145} cur, last; 146 147struct vmmeter sum, osum; 148char **dr_name; 149int *dr_select, dk_ndrive, ndrives; 150 151int winlines = 20; 152 153kvm_t *kd; 154 155#define FORKSTAT 0x01 156#define INTRSTAT 0x02 157#define MEMSTAT 0x04 158#define SUMSTAT 0x08 159#define TIMESTAT 0x10 160#define VMSTAT 0x20 161 162#include "names.c" /* disk names -- machine dependent */ 163 164void cpustats(), dkstats(), dointr(), domem(), dosum(); 165void dovmstat(), kread(), usage(); 166#ifdef notdef 167void dotimes(), doforkst(); 168#endif 169 170main(argc, argv) 171 register int argc; 172 register char **argv; 173{ 174 extern int optind; 175 extern char *optarg; 176 register int c, todo; 177 u_int interval; 178 int reps; 179 char *memf, *nlistf; 180 char errbuf[_POSIX2_LINE_MAX]; 181 182 memf = nlistf = NULL; 183 interval = reps = todo = 0; 184 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 185 switch (c) { 186 case 'c': 187 reps = atoi(optarg); 188 break; 189#ifndef notdef 190 case 'f': 191 todo |= FORKSTAT; 192 break; 193#endif 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 's': 207 todo |= SUMSTAT; 208 break; 209#ifndef notdef 210 case 't': 211 todo |= TIMESTAT; 212 break; 213#endif 214 case 'w': 215 interval = atoi(optarg); 216 break; 217 case '?': 218 default: 219 usage(); 220 } 221 } 222 argc -= optind; 223 argv += optind; 224 225 if (todo == 0) 226 todo = VMSTAT; 227 228 /* 229 * Discard setgid privileges if not the running kernel so that bad 230 * guys can't print interesting stuff from kernel memory. 231 */ 232 if (nlistf != NULL || memf != NULL) 233 setgid(getgid()); 234 235 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 236 if (kd == 0) { 237 (void)fprintf(stderr, 238 "vmstat: kvm_openfiles: %s\n", errbuf); 239 exit(1); 240 } 241 242 if ((c = kvm_nlist(kd, namelist)) != 0) { 243 if (c > 0) { 244 (void)fprintf(stderr, 245 "vmstat: undefined symbols:"); 246 for (c = 0; 247 c < sizeof(namelist)/sizeof(namelist[0]); c++) 248 if (namelist[c].n_type == 0) 249 fprintf(stderr, " %s", 250 namelist[c].n_name); 251 (void)fputc('\n', stderr); 252 } else 253 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 254 kvm_geterr(kd)); 255 exit(1); 256 } 257 258 if (todo & VMSTAT) { 259 char **getdrivedata(); 260 struct winsize winsize; 261 262 argv = getdrivedata(argv); 263 winsize.ws_row = 0; 264 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 265 if (winsize.ws_row > 0) 266 winlines = winsize.ws_row; 267 268 } 269 270#define BACKWARD_COMPATIBILITY 271#ifdef BACKWARD_COMPATIBILITY 272 if (*argv) { 273 interval = atoi(*argv); 274 if (*++argv) 275 reps = atoi(*argv); 276 } 277#endif 278 279 if (interval) { 280 if (!reps) 281 reps = -1; 282 } else if (reps) 283 interval = 1; 284 285#ifdef notdef 286 if (todo & FORKSTAT) 287 doforkst(); 288#endif 289 if (todo & MEMSTAT) 290 domem(); 291 if (todo & SUMSTAT) 292 dosum(); 293#ifdef notdef 294 if (todo & TIMESTAT) 295 dotimes(); 296#endif 297 if (todo & INTRSTAT) 298 dointr(); 299 if (todo & VMSTAT) 300 dovmstat(interval, reps); 301 exit(0); 302} 303 304char ** 305getdrivedata(argv) 306 char **argv; 307{ 308 register int i; 309 register char **cp; 310 char buf[30]; 311 312 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 313 if (dk_ndrive < 0) { 314 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 315 exit(1); 316 } 317 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 318 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 319 for (i = 0; i < dk_ndrive; i++) 320 dr_name[i] = NULL; 321 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 322 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 323 if (!read_names()) 324 exit (1); 325 for (i = 0; i < dk_ndrive; i++) 326 if (dr_name[i] == NULL) { 327 (void)sprintf(buf, "??%d", i); 328 dr_name[i] = strdup(buf); 329 } 330 331 /* 332 * Choose drives to be displayed. Priority goes to (in order) drives 333 * supplied as arguments, default drives. If everything isn't filled 334 * in and there are drives not taken care of, display the first few 335 * that fit. 336 */ 337#define BACKWARD_COMPATIBILITY 338 for (ndrives = 0; *argv; ++argv) { 339#ifdef BACKWARD_COMPATIBILITY 340 if (isdigit(**argv)) 341 break; 342#endif 343 for (i = 0; i < dk_ndrive; i++) { 344 if (strcmp(dr_name[i], *argv)) 345 continue; 346 dr_select[i] = 1; 347 ++ndrives; 348 break; 349 } 350 } 351 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 352 if (dr_select[i]) 353 continue; 354 for (cp = defdrives; *cp; cp++) 355 if (strcmp(dr_name[i], *cp) == 0) { 356 dr_select[i] = 1; 357 ++ndrives; 358 break; 359 } 360 } 361 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 362 if (dr_select[i]) 363 continue; 364 dr_select[i] = 1; 365 ++ndrives; 366 } 367 return(argv); 368} 369 370long 371getuptime() 372{ 373 static time_t now, boottime; 374 time_t uptime; 375 376 if (boottime == 0) 377 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 378 (void)time(&now); 379 uptime = now - boottime; 380 if (uptime <= 0 || uptime > 60*60*24*365*10) { 381 (void)fprintf(stderr, 382 "vmstat: time makes no sense; namelist must be wrong.\n"); 383 exit(1); 384 } 385 return(uptime); 386} 387 388int hz, hdrcnt; 389 390void 391dovmstat(interval, reps) 392 u_int interval; 393 int reps; 394{ 395 struct vmtotal total; 396 time_t uptime, halfuptime; 397 void needhdr(); 398 int mib[2], size; 399 400 uptime = getuptime(); 401 halfuptime = uptime / 2; 402 (void)signal(SIGCONT, needhdr); 403 404 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 405 kread(X_STATHZ, &hz, sizeof(hz)); 406 if (!hz) 407 kread(X_HZ, &hz, sizeof(hz)); 408 409 for (hdrcnt = 1;;) { 410 if (!--hdrcnt) 411 printhdr(); 412 kread(X_CPTIME, cur.time, sizeof(cur.time)); 413 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive); 414 kread(X_SUM, &sum, sizeof(sum)); 415 size = sizeof(total); 416 mib[0] = CTL_VM; 417 mib[1] = VM_METER; 418 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 419 printf("Can't get kerninfo: %s\n", strerror(errno)); 420 bzero(&total, sizeof(total)); 421 } 422 (void)printf("%2d%2d%2d", 423 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 424#define pgtok(a) ((a) * sum.v_page_size >> 10) 425#define rate(x) (((x) + halfuptime) / uptime) /* round */ 426 (void)printf("%6ld%6ld ", 427 pgtok(total.t_avm), pgtok(total.t_free)); 428 (void)printf("%4lu ", rate(sum.v_vm_faults - osum.v_vm_faults)); 429 (void)printf("%3lu ", 430 rate(sum.v_reactivated - osum.v_reactivated)); 431 (void)printf("%3lu ", rate(sum.v_swapin + sum.v_vnodein - 432 (osum.v_swapin + osum.v_vnodein))); 433 (void)printf("%3lu ", rate(sum.v_swapout + sum.v_vnodeout - 434 (osum.v_swapout + osum.v_vnodeout))); 435 (void)printf("%3lu ", rate(sum.v_tfree - osum.v_tfree)); 436 (void)printf("%3lu ", rate(sum.v_pdpages - osum.v_pdpages)); 437 dkstats(); 438 (void)printf("%4lu %4lu %3lu ", 439 rate(sum.v_intr - osum.v_intr), 440 rate(sum.v_syscall - osum.v_syscall), 441 rate(sum.v_swtch - osum.v_swtch)); 442 cpustats(); 443 (void)printf("\n"); 444 (void)fflush(stdout); 445 if (reps >= 0 && --reps <= 0) 446 break; 447 osum = sum; 448 uptime = interval; 449 /* 450 * We round upward to avoid losing low-frequency events 451 * (i.e., >= 1 per interval but < 1 per second). 452 */ 453 if (interval != 1) 454 halfuptime = (uptime + 1) / 2; 455 else 456 halfuptime = 0; 457 (void)sleep(interval); 458 } 459} 460 461printhdr() 462{ 463 register int i; 464 465 (void)printf(" procs memory page%*s", 20, ""); 466 if (ndrives > 1) 467 (void)printf("disks %*s faults cpu\n", 468 ndrives * 3 - 6, ""); 469 else 470 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 471 (void)printf(" r b w avm fre flt re pi po fr sr "); 472 for (i = 0; i < dk_ndrive; i++) 473 if (dr_select[i]) 474 (void)printf("%c%c ", dr_name[i][0], 475 dr_name[i][strlen(dr_name[i]) - 1]); 476 (void)printf(" in sy cs us sy id\n"); 477 hdrcnt = winlines - 2; 478} 479 480/* 481 * Force a header to be prepended to the next output. 482 */ 483void 484needhdr() 485{ 486 487 hdrcnt = 1; 488} 489 490#ifdef notdef 491void 492dotimes() 493{ 494 u_int pgintime, rectime; 495 496 kread(X_REC, &rectime, sizeof(rectime)); 497 kread(X_PGIN, &pgintime, sizeof(pgintime)); 498 kread(X_SUM, &sum, sizeof(sum)); 499 (void)printf("%u reclaims, %u total time (usec)\n", 500 sum.v_pgrec, rectime); 501 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 502 (void)printf("\n"); 503 (void)printf("%u page ins, %u total time (msec)\n", 504 sum.v_pgin, pgintime / 10); 505 (void)printf("average: %8.1f msec / page in\n", 506 pgintime / (sum.v_pgin * 10.0)); 507} 508#endif 509 510pct(top, bot) 511 long top, bot; 512{ 513 long ans; 514 515 if (bot == 0) 516 return(0); 517 ans = (quad_t)top * 100 / bot; 518 return (ans); 519} 520 521#define PCT(top, bot) pct((long)(top), (long)(bot)) 522 523#if defined(tahoe) 524#include <machine/cpu.h> 525#endif 526 527void 528dosum() 529{ 530 struct nchstats nchstats; 531 long nchtotal; 532#if defined(tahoe) 533 struct keystats keystats; 534#endif 535 536 kread(X_SUM, &sum, sizeof(sum)); 537 (void)printf("%9u cpu context switches\n", sum.v_swtch); 538 (void)printf("%9u device interrupts\n", sum.v_intr); 539 (void)printf("%9u software interrupts\n", sum.v_soft); 540#ifdef vax 541 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 542#endif 543 (void)printf("%9u traps\n", sum.v_trap); 544 (void)printf("%9u system calls\n", sum.v_syscall); 545 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 546 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 547 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 548 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 549 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 550 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 551 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 552 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 553 (void)printf("%9u VM object cache lookups\n", sum.v_lookups); 554 (void)printf("%9u VM object hits\n", sum.v_hits); 555 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 556 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 557 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 558 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 559 (void)printf("%9u zero fill pages allocated\n", sum.v_nzfod); 560 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 561 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 562 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 563 (void)printf("%9u pages freed\n", sum.v_tfree); 564 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 565 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 566 (void)printf("%9u pages active\n", sum.v_active_count); 567 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 568 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 569 (void)printf("%9u pages wired down\n", sum.v_wire_count); 570 (void)printf("%9u pages free\n", sum.v_free_count); 571 (void)printf("%9u bytes per page\n", sum.v_page_size); 572 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 573 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 574 nchstats.ncs_badhits + nchstats.ncs_falsehits + 575 nchstats.ncs_miss + nchstats.ncs_long; 576 (void)printf("%9ld total name lookups\n", nchtotal); 577 (void)printf( 578 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 579 "", PCT(nchstats.ncs_goodhits, nchtotal), 580 PCT(nchstats.ncs_neghits, nchtotal), 581 PCT(nchstats.ncs_pass2, nchtotal)); 582 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 583 PCT(nchstats.ncs_badhits, nchtotal), 584 PCT(nchstats.ncs_falsehits, nchtotal), 585 PCT(nchstats.ncs_long, nchtotal)); 586#if defined(tahoe) 587 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 588 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 589 keystats.ks_allocs, "code cache keys allocated", 590 PCT(keystats.ks_allocfree, keystats.ks_allocs), 591 PCT(keystats.ks_norefs, keystats.ks_allocs), 592 PCT(keystats.ks_taken, keystats.ks_allocs), 593 PCT(keystats.ks_shared, keystats.ks_allocs)); 594 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 595 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 596 keystats.ks_allocs, "data cache keys allocated", 597 PCT(keystats.ks_allocfree, keystats.ks_allocs), 598 PCT(keystats.ks_norefs, keystats.ks_allocs), 599 PCT(keystats.ks_taken, keystats.ks_allocs), 600 PCT(keystats.ks_shared, keystats.ks_allocs)); 601#endif 602} 603 604#ifdef notdef 605void 606doforkst() 607{ 608 struct forkstat fks; 609 610 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 611 (void)printf("%d forks, %d pages, average %.2f\n", 612 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 613 (void)printf("%d vforks, %d pages, average %.2f\n", 614 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 615} 616#endif 617 618void 619dkstats() 620{ 621 register int dn, state; 622 double etime; 623 long tmp; 624 625 for (dn = 0; dn < dk_ndrive; ++dn) { 626 tmp = cur.xfer[dn]; 627 cur.xfer[dn] -= last.xfer[dn]; 628 last.xfer[dn] = tmp; 629 } 630 etime = 0; 631 for (state = 0; state < CPUSTATES; ++state) { 632 tmp = cur.time[state]; 633 cur.time[state] -= last.time[state]; 634 last.time[state] = tmp; 635 etime += cur.time[state]; 636 } 637 if (etime == 0) 638 etime = 1; 639 etime /= hz; 640 for (dn = 0; dn < dk_ndrive; ++dn) { 641 if (!dr_select[dn]) 642 continue; 643 (void)printf("%2.0f ", cur.xfer[dn] / etime); 644 } 645} 646 647void 648cpustats() 649{ 650 register int state; 651 double pct, total; 652 653 total = 0; 654 for (state = 0; state < CPUSTATES; ++state) 655 total += cur.time[state]; 656 if (total) 657 pct = 100 / total; 658 else 659 pct = 0; 660 (void)printf("%2.0f ", (cur.time[CP_USER] + cur.time[CP_NICE]) * pct); 661 (void)printf("%2.0f ", (cur.time[CP_SYS] + cur.time[CP_INTR]) * pct); 662 (void)printf("%2.0f", cur.time[CP_IDLE] * pct); 663} 664 665void 666dointr() 667{ 668 register long *intrcnt, inttotal, uptime; 669 register int nintr, inamlen; 670 register char *intrname; 671 672 uptime = getuptime(); 673 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 674 inamlen = 675 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 676 intrcnt = malloc((size_t)nintr); 677 intrname = malloc((size_t)inamlen); 678 if (intrcnt == NULL || intrname == NULL) { 679 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 680 exit(1); 681 } 682 kread(X_INTRCNT, intrcnt, (size_t)nintr); 683 kread(X_INTRNAMES, intrname, (size_t)inamlen); 684 (void)printf("interrupt total rate\n"); 685 inttotal = 0; 686 nintr /= sizeof(long); 687 while (--nintr >= 0) { 688 if (*intrcnt) 689 (void)printf("%-12s %8ld %8ld\n", intrname, 690 *intrcnt, *intrcnt / uptime); 691 intrname += strlen(intrname) + 1; 692 inttotal += *intrcnt++; 693 } 694 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 695} 696 697/* 698 * These names are defined in <sys/malloc.h>. 699 */ 700char *kmemnames[] = INITKMEMNAMES; 701 702void 703domem() 704{ 705 register struct kmembuckets *kp; 706 register struct kmemstats *ks; 707 register int i, j; 708 int len, size, first; 709 long totuse = 0, totfree = 0, totreq = 0; 710 char *name; 711 struct kmemstats kmemstats[M_LAST]; 712 struct kmembuckets buckets[MINBUCKET + 16]; 713 714 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 715 (void)printf("Memory statistics by bucket size\n"); 716 (void)printf( 717 "Size In Use Free Requests HighWater Couldfree\n"); 718 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 719 if (kp->kb_calls == 0) 720 continue; 721 size = 1 << i; 722 if(size < 1024) 723 (void)printf("%4d",size); 724 else 725 (void)printf("%3dK",size>>10); 726 (void)printf(" %8ld %6ld %10ld %7ld %10ld\n", 727 kp->kb_total - kp->kb_totalfree, 728 kp->kb_totalfree, kp->kb_calls, 729 kp->kb_highwat, kp->kb_couldfree); 730 totfree += size * kp->kb_totalfree; 731 } 732 733 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 734 (void)printf("\nMemory usage type by bucket size\n"); 735 (void)printf("Size Type(s)\n"); 736 kp = &buckets[MINBUCKET]; 737 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 738 if (kp->kb_calls == 0) 739 continue; 740 first = 1; 741 len = 8; 742 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 743 if (ks->ks_calls == 0) 744 continue; 745 if ((ks->ks_size & j) == 0) 746 continue; 747 name = kmemnames[i] ? kmemnames[i] : "undefined"; 748 len += 2 + strlen(name); 749 if (first && j < 1024) 750 printf("%4d %s", j, name); 751 else if (first) 752 printf("%3dK %s", j>>10, name); 753 else 754 printf(","); 755 if (len >= 79) { 756 printf("\n\t "); 757 len = 10 + strlen(name); 758 } 759 if (!first) 760 printf(" %s", name); 761 first = 0; 762 } 763 printf("\n"); 764 } 765 766 (void)printf( 767 "\nMemory statistics by type Type Kern\n"); 768 (void)printf( 769" Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 770 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 771 if (ks->ks_calls == 0) 772 continue; 773 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 774 kmemnames[i] ? kmemnames[i] : "undefined", 775 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 776 (ks->ks_maxused + 1023) / 1024, 777 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 778 ks->ks_limblocks, ks->ks_mapblocks); 779 first = 1; 780 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 781 if ((ks->ks_size & j) == 0) 782 continue; 783 if (first) 784 printf(" "); 785 else 786 printf(","); 787 if(j<1024) 788 printf("%d",j); 789 else 790 printf("%dK",j>>10); 791 first = 0; 792 } 793 printf("\n"); 794 totuse += ks->ks_memuse; 795 totreq += ks->ks_calls; 796 } 797 (void)printf("\nMemory Totals: In Use Free Requests\n"); 798 (void)printf(" %7ldK %6ldK %8ld\n", 799 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 800} 801 802/* 803 * kread reads something from the kernel, given its nlist index. 804 */ 805void 806kread(nlx, addr, size) 807 int nlx; 808 void *addr; 809 size_t size; 810{ 811 char *sym; 812 813 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 814 sym = namelist[nlx].n_name; 815 if (*sym == '_') 816 ++sym; 817 (void)fprintf(stderr, 818 "vmstat: symbol %s not defined\n", sym); 819 exit(1); 820 } 821 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 822 sym = namelist[nlx].n_name; 823 if (*sym == '_') 824 ++sym; 825 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 826 exit(1); 827 } 828} 829 830void 831usage() 832{ 833 (void)fprintf(stderr, 834 "usage: vmstat [-ims] [-c count] [-M core] \ 835[-N system] [-w wait] [disks]\n"); 836 exit(1); 837} 838