vmstat.c revision 1.18
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 35 static 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 41 /*static char sccsid[] = "from: @(#)vmstat.c 8.1 (Berkeley) 6/6/93";*/ 42 static char *rcsid = "$Id: vmstat.c,v 1.18 1995/03/14 07:35:49 pk Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/time.h> 47 #include <sys/proc.h> 48 #include <sys/user.h> 49 #include <sys/dkstat.h> 50 #include <sys/buf.h> 51 #include <sys/namei.h> 52 #include <sys/malloc.h> 53 #include <sys/signal.h> 54 #include <sys/fcntl.h> 55 #include <sys/ioctl.h> 56 #include <sys/sysctl.h> 57 #include <sys/device.h> 58 #include <vm/vm.h> 59 #include <time.h> 60 #include <nlist.h> 61 #include <kvm.h> 62 #include <errno.h> 63 #include <unistd.h> 64 #include <stdio.h> 65 #include <ctype.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <paths.h> 69 #include <limits.h> 70 71 #define NEWVM /* XXX till old has been updated or purged */ 72 struct nlist namelist[] = { 73 #define X_CPTIME 0 74 { "_cp_time" }, 75 #define X_DK_NDRIVE 1 76 { "_dk_ndrive" }, 77 #define X_SUM 2 78 { "_cnt" }, 79 #define X_BOOTTIME 3 80 { "_boottime" }, 81 #define X_DKXFER 4 82 { "_dk_xfer" }, 83 #define X_HZ 5 84 { "_hz" }, 85 #define X_STATHZ 6 86 { "_stathz" }, 87 #define X_NCHSTATS 7 88 { "_nchstats" }, 89 #define X_INTRNAMES 8 90 { "_intrnames" }, 91 #define X_EINTRNAMES 9 92 { "_eintrnames" }, 93 #define X_INTRCNT 10 94 { "_intrcnt" }, 95 #define X_EINTRCNT 11 96 { "_eintrcnt" }, 97 #define X_KMEMSTAT 12 98 { "_kmemstats" }, 99 #define X_KMEMBUCKETS 13 100 { "_bucket" }, 101 #define X_ALLEVENTS 14 102 { "_allevents" }, 103 #ifdef notdef 104 #define X_DEFICIT 15 105 { "_deficit" }, 106 #define X_FORKSTAT 16 107 { "_forkstat" }, 108 #define X_REC 17 109 { "_rectime" }, 110 #define X_PGIN 18 111 { "_pgintime" }, 112 #define X_XSTATS 19 113 { "_xstats" }, 114 #define X_END 20 115 #else 116 #define X_END 15 117 #endif 118 #if defined(hp300) || defined(luna68k) 119 #define X_HPDINIT (X_END) 120 { "_hp_dinit" }, 121 #endif 122 #ifdef mips 123 #define X_SCSI_DINIT (X_END) 124 { "_scsi_dinit" }, 125 #endif 126 #ifdef tahoe 127 #define X_VBDINIT (X_END) 128 { "_vbdinit" }, 129 #define X_CKEYSTATS (X_END+1) 130 { "_ckeystats" }, 131 #define X_DKEYSTATS (X_END+2) 132 { "_dkeystats" }, 133 #endif 134 #ifdef vax 135 #define X_MBDINIT (X_END) 136 { "_mbdinit" }, 137 #define X_UBDINIT (X_END+1) 138 { "_ubdinit" }, 139 #endif 140 { "" }, 141 }; 142 143 struct _disk { 144 long time[CPUSTATES]; 145 long *xfer; 146 } cur, last; 147 148 struct vmmeter sum, osum; 149 char **dr_name; 150 int *dr_select, dk_ndrive, ndrives; 151 152 int winlines = 20; 153 154 kvm_t *kd; 155 156 #define FORKSTAT 0x01 157 #define INTRSTAT 0x02 158 #define MEMSTAT 0x04 159 #define SUMSTAT 0x08 160 #define TIMESTAT 0x10 161 #define VMSTAT 0x20 162 163 #include "names.c" /* disk names -- machine dependent */ 164 165 void cpustats(), dkstats(), dointr(), domem(), dosum(); 166 void dovmstat(), kread(), usage(); 167 #ifdef notdef 168 void dotimes(), doforkst(); 169 #endif 170 171 main(argc, argv) 172 register int argc; 173 register char **argv; 174 { 175 extern int optind; 176 extern char *optarg; 177 register int c, todo; 178 u_int interval; 179 int reps; 180 char *memf, *nlistf; 181 char errbuf[_POSIX2_LINE_MAX]; 182 183 memf = nlistf = NULL; 184 interval = reps = todo = 0; 185 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 186 switch (c) { 187 case 'c': 188 reps = atoi(optarg); 189 break; 190 #ifndef notdef 191 case 'f': 192 todo |= FORKSTAT; 193 break; 194 #endif 195 case 'i': 196 todo |= INTRSTAT; 197 break; 198 case 'M': 199 memf = optarg; 200 break; 201 case 'm': 202 todo |= MEMSTAT; 203 break; 204 case 'N': 205 nlistf = optarg; 206 break; 207 case 's': 208 todo |= SUMSTAT; 209 break; 210 #ifndef notdef 211 case 't': 212 todo |= TIMESTAT; 213 break; 214 #endif 215 case 'w': 216 interval = atoi(optarg); 217 break; 218 case '?': 219 default: 220 usage(); 221 } 222 } 223 argc -= optind; 224 argv += optind; 225 226 if (todo == 0) 227 todo = VMSTAT; 228 229 /* 230 * Discard setgid privileges if not the running kernel so that bad 231 * guys can't print interesting stuff from kernel memory. 232 */ 233 if (nlistf != NULL || memf != NULL) 234 setgid(getgid()); 235 236 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 237 if (kd == 0) { 238 (void)fprintf(stderr, 239 "vmstat: kvm_openfiles: %s\n", errbuf); 240 exit(1); 241 } 242 243 if ((c = kvm_nlist(kd, namelist)) != 0) { 244 if (c > 0) { 245 (void)fprintf(stderr, 246 "vmstat: undefined symbols:"); 247 for (c = 0; 248 c < sizeof(namelist)/sizeof(namelist[0]); c++) 249 if (namelist[c].n_type == 0) 250 fprintf(stderr, " %s", 251 namelist[c].n_name); 252 (void)fputc('\n', stderr); 253 } else 254 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 255 kvm_geterr(kd)); 256 exit(1); 257 } 258 259 if (todo & VMSTAT) { 260 char **getdrivedata(); 261 struct winsize winsize; 262 263 argv = getdrivedata(argv); 264 winsize.ws_row = 0; 265 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 266 if (winsize.ws_row > 0) 267 winlines = winsize.ws_row; 268 269 } 270 271 #define BACKWARD_COMPATIBILITY 272 #ifdef BACKWARD_COMPATIBILITY 273 if (*argv) { 274 interval = atoi(*argv); 275 if (*++argv) 276 reps = atoi(*argv); 277 } 278 #endif 279 280 if (interval) { 281 if (!reps) 282 reps = -1; 283 } else if (reps) 284 interval = 1; 285 286 #ifdef notdef 287 if (todo & FORKSTAT) 288 doforkst(); 289 #endif 290 if (todo & MEMSTAT) 291 domem(); 292 if (todo & SUMSTAT) 293 dosum(); 294 #ifdef notdef 295 if (todo & TIMESTAT) 296 dotimes(); 297 #endif 298 if (todo & INTRSTAT) 299 dointr(); 300 if (todo & VMSTAT) 301 dovmstat(interval, reps); 302 exit(0); 303 } 304 305 char ** 306 getdrivedata(argv) 307 char **argv; 308 { 309 register int i; 310 register char **cp; 311 char buf[30]; 312 313 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 314 if (dk_ndrive <= 0) { 315 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 316 exit(1); 317 } 318 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 319 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 320 for (i = 0; i < dk_ndrive; i++) 321 dr_name[i] = NULL; 322 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 323 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 324 if (!read_names()) 325 exit (1); 326 for (i = 0; i < dk_ndrive; i++) 327 if (dr_name[i] == NULL) { 328 (void)sprintf(buf, "??%d", i); 329 dr_name[i] = strdup(buf); 330 } 331 332 /* 333 * Choose drives to be displayed. Priority goes to (in order) drives 334 * supplied as arguments, default drives. If everything isn't filled 335 * in and there are drives not taken care of, display the first few 336 * that fit. 337 */ 338 #define BACKWARD_COMPATIBILITY 339 for (ndrives = 0; *argv; ++argv) { 340 #ifdef BACKWARD_COMPATIBILITY 341 if (isdigit(**argv)) 342 break; 343 #endif 344 for (i = 0; i < dk_ndrive; i++) { 345 if (strcmp(dr_name[i], *argv)) 346 continue; 347 dr_select[i] = 1; 348 ++ndrives; 349 break; 350 } 351 } 352 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 353 if (dr_select[i]) 354 continue; 355 for (cp = defdrives; *cp; cp++) 356 if (strcmp(dr_name[i], *cp) == 0) { 357 dr_select[i] = 1; 358 ++ndrives; 359 break; 360 } 361 } 362 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 363 if (dr_select[i]) 364 continue; 365 dr_select[i] = 1; 366 ++ndrives; 367 } 368 return(argv); 369 } 370 371 long 372 getuptime() 373 { 374 static time_t now, boottime; 375 time_t uptime; 376 377 if (boottime == 0) 378 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 379 (void)time(&now); 380 uptime = now - boottime; 381 if (uptime <= 0 || uptime > 60*60*24*365*10) { 382 (void)fprintf(stderr, 383 "vmstat: time makes no sense; namelist must be wrong.\n"); 384 exit(1); 385 } 386 return(uptime); 387 } 388 389 int hz, hdrcnt; 390 391 void 392 dovmstat(interval, reps) 393 u_int interval; 394 int reps; 395 { 396 struct vmtotal total; 397 time_t uptime, halfuptime; 398 void needhdr(); 399 int mib[2]; 400 size_t size; 401 402 uptime = getuptime(); 403 halfuptime = uptime / 2; 404 (void)signal(SIGCONT, needhdr); 405 406 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 407 kread(X_STATHZ, &hz, sizeof(hz)); 408 if (!hz) 409 kread(X_HZ, &hz, sizeof(hz)); 410 411 for (hdrcnt = 1;;) { 412 if (!--hdrcnt) 413 printhdr(); 414 kread(X_CPTIME, cur.time, sizeof(cur.time)); 415 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive); 416 kread(X_SUM, &sum, sizeof(sum)); 417 size = sizeof(total); 418 mib[0] = CTL_VM; 419 mib[1] = VM_METER; 420 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 421 printf("Can't get kerninfo: %s\n", strerror(errno)); 422 bzero(&total, sizeof(total)); 423 } 424 (void)printf("%2d%2d%2d", 425 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 426 #define pgtok(a) ((a) * sum.v_page_size >> 10) 427 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 428 (void)printf("%6ld%6ld ", 429 pgtok(total.t_avm), pgtok(total.t_free)); 430 #ifdef NEWVM 431 (void)printf("%4lu ", rate(sum.v_faults - osum.v_faults)); 432 (void)printf("%3lu ", 433 rate(sum.v_reactivated - osum.v_reactivated)); 434 (void)printf("%3lu ", rate(sum.v_pageins - osum.v_pageins)); 435 (void)printf("%3lu %3lu ", 436 rate(sum.v_pageouts - osum.v_pageouts), 0); 437 #else 438 (void)printf("%3lu %2lu ", 439 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 440 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 441 rate(sum.v_xsfrec + sum.v_xifrec - 442 osum.v_xsfrec - osum.v_xifrec)); 443 (void)printf("%3lu ", 444 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 445 (void)printf("%3lu %3lu ", 446 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 447 rate(pgtok(sum.v_dfree - osum.v_dfree))); 448 (void)printf("%3d ", pgtok(deficit)); 449 #endif 450 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 451 dkstats(); 452 (void)printf("%4lu %4lu %3lu ", 453 rate(sum.v_intr - osum.v_intr), 454 rate(sum.v_syscall - osum.v_syscall), 455 rate(sum.v_swtch - osum.v_swtch)); 456 cpustats(); 457 (void)printf("\n"); 458 (void)fflush(stdout); 459 if (reps >= 0 && --reps <= 0) 460 break; 461 osum = sum; 462 uptime = interval; 463 /* 464 * We round upward to avoid losing low-frequency events 465 * (i.e., >= 1 per interval but < 1 per second). 466 */ 467 halfuptime = (uptime + 1) / 2; 468 (void)sleep(interval); 469 } 470 } 471 472 printhdr() 473 { 474 register int i; 475 476 (void)printf(" procs memory page%*s", 20, ""); 477 if (ndrives > 1) 478 (void)printf("disks %*s faults cpu\n", 479 ndrives * 3 - 6, ""); 480 else 481 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 482 #ifndef NEWVM 483 (void)printf(" r b w avm fre re at pi po fr de sr "); 484 #else 485 (void)printf(" r b w avm fre flt re pi po fr sr "); 486 #endif 487 for (i = 0; i < dk_ndrive; i++) 488 if (dr_select[i]) 489 (void)printf("%c%c ", dr_name[i][0], 490 dr_name[i][strlen(dr_name[i]) - 1]); 491 (void)printf(" in sy cs us sy id\n"); 492 hdrcnt = winlines - 2; 493 } 494 495 /* 496 * Force a header to be prepended to the next output. 497 */ 498 void 499 needhdr() 500 { 501 502 hdrcnt = 1; 503 } 504 505 #ifdef notdef 506 void 507 dotimes() 508 { 509 u_int pgintime, rectime; 510 511 kread(X_REC, &rectime, sizeof(rectime)); 512 kread(X_PGIN, &pgintime, sizeof(pgintime)); 513 kread(X_SUM, &sum, sizeof(sum)); 514 (void)printf("%u reclaims, %u total time (usec)\n", 515 sum.v_pgrec, rectime); 516 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 517 (void)printf("\n"); 518 (void)printf("%u page ins, %u total time (msec)\n", 519 sum.v_pgin, pgintime / 10); 520 (void)printf("average: %8.1f msec / page in\n", 521 pgintime / (sum.v_pgin * 10.0)); 522 } 523 #endif 524 525 pct(top, bot) 526 long top, bot; 527 { 528 long ans; 529 530 if (bot == 0) 531 return(0); 532 ans = (quad_t)top * 100 / bot; 533 return (ans); 534 } 535 536 #define PCT(top, bot) pct((long)(top), (long)(bot)) 537 538 #if defined(tahoe) 539 #include <machine/cpu.h> 540 #endif 541 542 void 543 dosum() 544 { 545 struct nchstats nchstats; 546 #ifndef NEWVM 547 struct xstats xstats; 548 #endif 549 long nchtotal; 550 #if defined(tahoe) 551 struct keystats keystats; 552 #endif 553 554 kread(X_SUM, &sum, sizeof(sum)); 555 (void)printf("%9u cpu context switches\n", sum.v_swtch); 556 (void)printf("%9u device interrupts\n", sum.v_intr); 557 (void)printf("%9u software interrupts\n", sum.v_soft); 558 #ifdef vax 559 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 560 #endif 561 (void)printf("%9u traps\n", sum.v_trap); 562 (void)printf("%9u system calls\n", sum.v_syscall); 563 (void)printf("%9u total faults taken\n", sum.v_faults); 564 (void)printf("%9u swap ins\n", sum.v_swpin); 565 (void)printf("%9u swap outs\n", sum.v_swpout); 566 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 567 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 568 (void)printf("%9u page ins\n", sum.v_pageins); 569 (void)printf("%9u page outs\n", sum.v_pageouts); 570 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 571 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 572 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 573 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 574 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 575 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 576 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 577 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 578 #ifdef NEWVM 579 (void)printf("%9u VM object cache lookups\n", sum.v_lookups); 580 (void)printf("%9u VM object hits\n", sum.v_hits); 581 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 582 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 583 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 584 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 585 (void)printf("%9u pages free\n", sum.v_free_count); 586 (void)printf("%9u pages wired down\n", sum.v_wire_count); 587 (void)printf("%9u pages active\n", sum.v_active_count); 588 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 589 (void)printf("%9u bytes per page\n", sum.v_page_size); 590 #else 591 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 592 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 593 PCT(sum.v_fastpgrec, sum.v_pgrec)); 594 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 595 (void)printf("%9u executable fill pages created\n", 596 sum.v_nexfod / CLSIZE); 597 (void)printf("%9u executable fill page faults\n", 598 sum.v_exfod / CLSIZE); 599 (void)printf("%9u swap text pages found in free list\n", 600 sum.v_xsfrec); 601 (void)printf("%9u inode text pages found in free list\n", 602 sum.v_xifrec); 603 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 604 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 605 (void)printf("%9u pages freed by the clock daemon\n", 606 sum.v_dfree / CLSIZE); 607 #endif 608 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 609 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 610 nchstats.ncs_badhits + nchstats.ncs_falsehits + 611 nchstats.ncs_miss + nchstats.ncs_long; 612 (void)printf("%9ld total name lookups\n", nchtotal); 613 (void)printf( 614 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 615 "", PCT(nchstats.ncs_goodhits, nchtotal), 616 PCT(nchstats.ncs_neghits, nchtotal), 617 PCT(nchstats.ncs_pass2, nchtotal)); 618 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 619 PCT(nchstats.ncs_badhits, nchtotal), 620 PCT(nchstats.ncs_falsehits, nchtotal), 621 PCT(nchstats.ncs_long, nchtotal)); 622 #ifndef NEWVM 623 kread(X_XSTATS, &xstats, sizeof(xstats)); 624 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 625 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 626 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 627 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 628 (void)printf("%9lu total calls to xfree", xstats.free); 629 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 630 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 631 #endif 632 #if defined(tahoe) 633 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 634 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 635 keystats.ks_allocs, "code cache keys allocated", 636 PCT(keystats.ks_allocfree, keystats.ks_allocs), 637 PCT(keystats.ks_norefs, keystats.ks_allocs), 638 PCT(keystats.ks_taken, keystats.ks_allocs), 639 PCT(keystats.ks_shared, keystats.ks_allocs)); 640 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 641 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 642 keystats.ks_allocs, "data cache keys allocated", 643 PCT(keystats.ks_allocfree, keystats.ks_allocs), 644 PCT(keystats.ks_norefs, keystats.ks_allocs), 645 PCT(keystats.ks_taken, keystats.ks_allocs), 646 PCT(keystats.ks_shared, keystats.ks_allocs)); 647 #endif 648 } 649 650 #ifdef notdef 651 void 652 doforkst() 653 { 654 struct forkstat fks; 655 656 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 657 (void)printf("%d forks, %d pages, average %.2f\n", 658 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 659 (void)printf("%d vforks, %d pages, average %.2f\n", 660 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 661 } 662 #endif 663 664 void 665 dkstats() 666 { 667 register int dn, state; 668 double etime; 669 long tmp; 670 671 for (dn = 0; dn < dk_ndrive; ++dn) { 672 tmp = cur.xfer[dn]; 673 cur.xfer[dn] -= last.xfer[dn]; 674 last.xfer[dn] = tmp; 675 } 676 etime = 0; 677 for (state = 0; state < CPUSTATES; ++state) { 678 tmp = cur.time[state]; 679 cur.time[state] -= last.time[state]; 680 last.time[state] = tmp; 681 etime += cur.time[state]; 682 } 683 if (etime == 0) 684 etime = 1; 685 etime /= hz; 686 for (dn = 0; dn < dk_ndrive; ++dn) { 687 if (!dr_select[dn]) 688 continue; 689 (void)printf("%2.0f ", cur.xfer[dn] / etime); 690 } 691 } 692 693 void 694 cpustats() 695 { 696 register int state; 697 double pct, total; 698 699 total = 0; 700 for (state = 0; state < CPUSTATES; ++state) 701 total += cur.time[state]; 702 if (total) 703 pct = 100 / total; 704 else 705 pct = 0; 706 (void)printf("%2.0f ", (cur.time[CP_USER] + cur.time[CP_NICE]) * pct); 707 (void)printf("%2.0f ", (cur.time[CP_SYS] + cur.time[CP_INTR]) * pct); 708 (void)printf("%2.0f", cur.time[CP_IDLE] * pct); 709 } 710 711 void 712 dointr() 713 { 714 register long *intrcnt, inttotal, uptime; 715 register int nintr, inamlen; 716 register char *intrname; 717 struct evcnt evcnt, *allevents; 718 struct device dev; 719 720 uptime = getuptime(); 721 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 722 inamlen = 723 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 724 intrcnt = malloc((size_t)nintr); 725 intrname = malloc((size_t)inamlen); 726 if (intrcnt == NULL || intrname == NULL) { 727 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 728 exit(1); 729 } 730 kread(X_INTRCNT, intrcnt, (size_t)nintr); 731 kread(X_INTRNAMES, intrname, (size_t)inamlen); 732 (void)printf("interrupt total rate\n"); 733 inttotal = 0; 734 nintr /= sizeof(long); 735 while (--nintr >= 0) { 736 if (*intrcnt) 737 (void)printf("%-12s %8ld %8ld\n", intrname, 738 *intrcnt, *intrcnt / uptime); 739 intrname += strlen(intrname) + 1; 740 inttotal += *intrcnt++; 741 } 742 kread(X_ALLEVENTS, &allevents, sizeof allevents); 743 while (allevents) { 744 if (kvm_read(kd, (int)allevents, (void *)&evcnt, 745 sizeof evcnt) != sizeof evcnt) { 746 (void)fprintf(stderr, "vmstat: event chain trashed\n", 747 kvm_geterr(kd)); 748 exit(1); 749 } 750 if (strcmp(evcnt.ev_name, "intr") == 0) { 751 if (kvm_read(kd, (int)evcnt.ev_dev, (void *)&dev, 752 sizeof dev) != sizeof dev) { 753 (void)fprintf(stderr, "vmstat: event chain trashed\n", 754 kvm_geterr(kd)); 755 exit(1); 756 } 757 if (evcnt.ev_count) 758 (void)printf("%-12s %8ld %8ld\n", dev.dv_xname, 759 evcnt.ev_count, evcnt.ev_count / uptime); 760 } 761 allevents = evcnt.ev_next; 762 } 763 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 764 } 765 766 /* 767 * These names are defined in <sys/malloc.h>. 768 */ 769 char *kmemnames[] = INITKMEMNAMES; 770 771 void 772 domem() 773 { 774 register struct kmembuckets *kp; 775 register struct kmemstats *ks; 776 register int i, j; 777 int len, size, first; 778 long totuse = 0, totfree = 0, totreq = 0; 779 char *name; 780 struct kmemstats kmemstats[M_LAST]; 781 struct kmembuckets buckets[MINBUCKET + 16]; 782 783 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 784 (void)printf("Memory statistics by bucket size\n"); 785 (void)printf( 786 " Size In Use Free Requests HighWater Couldfree\n"); 787 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 788 if (kp->kb_calls == 0) 789 continue; 790 size = 1 << i; 791 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 792 kp->kb_total - kp->kb_totalfree, 793 kp->kb_totalfree, kp->kb_calls, 794 kp->kb_highwat, kp->kb_couldfree); 795 totfree += size * kp->kb_totalfree; 796 } 797 798 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 799 (void)printf("\nMemory usage type by bucket size\n"); 800 (void)printf(" Size Type(s)\n"); 801 kp = &buckets[MINBUCKET]; 802 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 803 if (kp->kb_calls == 0) 804 continue; 805 first = 1; 806 len = 8; 807 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 808 if (ks->ks_calls == 0) 809 continue; 810 if ((ks->ks_size & j) == 0) 811 continue; 812 name = kmemnames[i] ? kmemnames[i] : "undefined"; 813 len += 2 + strlen(name); 814 if (first) 815 printf("%8d %s", j, name); 816 else 817 printf(","); 818 if (len >= 80) { 819 printf("\n\t "); 820 len = 10 + strlen(name); 821 } 822 if (!first) 823 printf(" %s", name); 824 first = 0; 825 } 826 printf("\n"); 827 } 828 829 (void)printf( 830 "\nMemory statistics by type Type Kern\n"); 831 (void)printf( 832 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 833 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 834 if (ks->ks_calls == 0) 835 continue; 836 (void)printf("%12s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 837 kmemnames[i] ? kmemnames[i] : "undefined", 838 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 839 (ks->ks_maxused + 1023) / 1024, 840 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 841 ks->ks_limblocks, ks->ks_mapblocks); 842 first = 1; 843 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 844 if ((ks->ks_size & j) == 0) 845 continue; 846 if (first) 847 printf(" %d", j); 848 else 849 printf(",%d", j); 850 first = 0; 851 } 852 printf("\n"); 853 totuse += ks->ks_memuse; 854 totreq += ks->ks_calls; 855 } 856 (void)printf("\nMemory Totals: In Use Free Requests\n"); 857 (void)printf(" %7ldK %6ldK %8ld\n", 858 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 859 } 860 861 /* 862 * kread reads something from the kernel, given its nlist index. 863 */ 864 void 865 kread(nlx, addr, size) 866 int nlx; 867 void *addr; 868 size_t size; 869 { 870 char *sym; 871 872 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 873 sym = namelist[nlx].n_name; 874 if (*sym == '_') 875 ++sym; 876 (void)fprintf(stderr, 877 "vmstat: symbol %s not defined\n", sym); 878 exit(1); 879 } 880 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 881 sym = namelist[nlx].n_name; 882 if (*sym == '_') 883 ++sym; 884 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 885 exit(1); 886 } 887 } 888 889 void 890 usage() 891 { 892 (void)fprintf(stderr, 893 #ifndef NEWVM 894 "usage: vmstat [-fimst] [-c count] [-M core] \ 895 [-N system] [-w wait] [disks]\n"); 896 #else 897 "usage: vmstat [-ims] [-c count] [-M core] \ 898 [-N system] [-w wait] [disks]\n"); 899 #endif 900 exit(1); 901 } 902 903
Indexes created Mon Sep 22 10:09:38 GMT 2025