vmstat.c revision 1.21
1 /* $NetBSD: vmstat.c,v 1.21 1995/05/07 22:16:26 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 45 #else 46 static char rcsid[] = "$NetBSD: vmstat.c,v 1.21 1995/05/07 22:16:26 cgd Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/proc.h> 53 #include <sys/user.h> 54 #include <sys/dkstat.h> 55 #include <sys/buf.h> 56 #include <sys/namei.h> 57 #include <sys/malloc.h> 58 #include <sys/signal.h> 59 #include <sys/fcntl.h> 60 #include <sys/ioctl.h> 61 #include <sys/sysctl.h> 62 #include <sys/device.h> 63 #include <vm/vm.h> 64 #include <time.h> 65 #include <nlist.h> 66 #include <kvm.h> 67 #include <errno.h> 68 #include <unistd.h> 69 #include <stdio.h> 70 #include <ctype.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <paths.h> 74 #include <limits.h> 75 76 #define NEWVM /* XXX till old has been updated or purged */ 77 struct nlist namelist[] = { 78 #define X_CPTIME 0 79 { "_cp_time" }, 80 #define X_DK_NDRIVE 1 81 { "_dk_ndrive" }, 82 #define X_SUM 2 83 { "_cnt" }, 84 #define X_BOOTTIME 3 85 { "_boottime" }, 86 #define X_DKXFER 4 87 { "_dk_xfer" }, 88 #define X_HZ 5 89 { "_hz" }, 90 #define X_STATHZ 6 91 { "_stathz" }, 92 #define X_NCHSTATS 7 93 { "_nchstats" }, 94 #define X_INTRNAMES 8 95 { "_intrnames" }, 96 #define X_EINTRNAMES 9 97 { "_eintrnames" }, 98 #define X_INTRCNT 10 99 { "_intrcnt" }, 100 #define X_EINTRCNT 11 101 { "_eintrcnt" }, 102 #define X_KMEMSTAT 12 103 { "_kmemstats" }, 104 #define X_KMEMBUCKETS 13 105 { "_bucket" }, 106 #define X_ALLEVENTS 14 107 { "_allevents" }, 108 #ifdef notdef 109 #define X_DEFICIT 15 110 { "_deficit" }, 111 #define X_FORKSTAT 16 112 { "_forkstat" }, 113 #define X_REC 17 114 { "_rectime" }, 115 #define X_PGIN 18 116 { "_pgintime" }, 117 #define X_XSTATS 19 118 { "_xstats" }, 119 #define X_END 20 120 #else 121 #define X_END 15 122 #endif 123 #if defined(hp300) || defined(luna68k) 124 #define X_HPDINIT (X_END) 125 { "_hp_dinit" }, 126 #endif 127 #ifdef mips 128 #define X_SCSI_DINIT (X_END) 129 { "_scsi_dinit" }, 130 #endif 131 #ifdef tahoe 132 #define X_VBDINIT (X_END) 133 { "_vbdinit" }, 134 #define X_CKEYSTATS (X_END+1) 135 { "_ckeystats" }, 136 #define X_DKEYSTATS (X_END+2) 137 { "_dkeystats" }, 138 #endif 139 { "" }, 140 }; 141 142 struct _disk { 143 long time[CPUSTATES]; 144 long *xfer; 145 } cur, last; 146 147 struct vmmeter sum, osum; 148 char **dr_name; 149 int *dr_select, dk_ndrive, ndrives; 150 151 int winlines = 20; 152 153 kvm_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 */ 163 164 void cpustats(), dkstats(), dointr(), domem(), dosum(); 165 void dovmstat(), kread(), usage(); 166 #ifdef notdef 167 void dotimes(), doforkst(); 168 #endif 169 170 main(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 } 303 304 char ** 305 getdrivedata(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 } 369 370 long 371 getuptime() 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 } 387 388 int hz, hdrcnt; 389 390 void 391 dovmstat(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]; 399 size_t size; 400 401 uptime = getuptime(); 402 halfuptime = uptime / 2; 403 (void)signal(SIGCONT, needhdr); 404 405 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 406 kread(X_STATHZ, &hz, sizeof(hz)); 407 if (!hz) 408 kread(X_HZ, &hz, sizeof(hz)); 409 410 for (hdrcnt = 1;;) { 411 if (!--hdrcnt) 412 printhdr(); 413 kread(X_CPTIME, cur.time, sizeof(cur.time)); 414 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive); 415 kread(X_SUM, &sum, sizeof(sum)); 416 size = sizeof(total); 417 mib[0] = CTL_VM; 418 mib[1] = VM_METER; 419 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 420 printf("Can't get kerninfo: %s\n", strerror(errno)); 421 bzero(&total, sizeof(total)); 422 } 423 (void)printf("%2d%2d%2d", 424 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 425 #define pgtok(a) ((a) * sum.v_page_size >> 10) 426 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 427 (void)printf("%6ld%6ld ", 428 pgtok(total.t_avm), pgtok(total.t_free)); 429 #ifdef NEWVM 430 (void)printf("%4lu ", rate(sum.v_faults - osum.v_faults)); 431 (void)printf("%3lu ", 432 rate(sum.v_reactivated - osum.v_reactivated)); 433 (void)printf("%3lu ", rate(sum.v_pageins - osum.v_pageins)); 434 (void)printf("%3lu %3lu ", 435 rate(sum.v_pageouts - osum.v_pageouts), 0); 436 #else 437 (void)printf("%3lu %2lu ", 438 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 439 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 440 rate(sum.v_xsfrec + sum.v_xifrec - 441 osum.v_xsfrec - osum.v_xifrec)); 442 (void)printf("%3lu ", 443 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 444 (void)printf("%3lu %3lu ", 445 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 446 rate(pgtok(sum.v_dfree - osum.v_dfree))); 447 (void)printf("%3d ", pgtok(deficit)); 448 #endif 449 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 450 dkstats(); 451 (void)printf("%4lu %4lu %3lu ", 452 rate(sum.v_intr - osum.v_intr), 453 rate(sum.v_syscall - osum.v_syscall), 454 rate(sum.v_swtch - osum.v_swtch)); 455 cpustats(); 456 (void)printf("\n"); 457 (void)fflush(stdout); 458 if (reps >= 0 && --reps <= 0) 459 break; 460 osum = sum; 461 uptime = interval; 462 /* 463 * We round upward to avoid losing low-frequency events 464 * (i.e., >= 1 per interval but < 1 per second). 465 */ 466 halfuptime = (uptime + 1) / 2; 467 (void)sleep(interval); 468 } 469 } 470 471 printhdr() 472 { 473 register int i; 474 475 (void)printf(" procs memory page%*s", 20, ""); 476 if (ndrives > 1) 477 (void)printf("disks %*s faults cpu\n", 478 ndrives * 3 - 6, ""); 479 else 480 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 481 #ifndef NEWVM 482 (void)printf(" r b w avm fre re at pi po fr de sr "); 483 #else 484 (void)printf(" r b w avm fre flt re pi po fr sr "); 485 #endif 486 for (i = 0; i < dk_ndrive; i++) 487 if (dr_select[i]) 488 (void)printf("%c%c ", dr_name[i][0], 489 dr_name[i][strlen(dr_name[i]) - 1]); 490 (void)printf(" in sy cs us sy id\n"); 491 hdrcnt = winlines - 2; 492 } 493 494 /* 495 * Force a header to be prepended to the next output. 496 */ 497 void 498 needhdr() 499 { 500 501 hdrcnt = 1; 502 } 503 504 #ifdef notdef 505 void 506 dotimes() 507 { 508 u_int pgintime, rectime; 509 510 kread(X_REC, &rectime, sizeof(rectime)); 511 kread(X_PGIN, &pgintime, sizeof(pgintime)); 512 kread(X_SUM, &sum, sizeof(sum)); 513 (void)printf("%u reclaims, %u total time (usec)\n", 514 sum.v_pgrec, rectime); 515 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 516 (void)printf("\n"); 517 (void)printf("%u page ins, %u total time (msec)\n", 518 sum.v_pgin, pgintime / 10); 519 (void)printf("average: %8.1f msec / page in\n", 520 pgintime / (sum.v_pgin * 10.0)); 521 } 522 #endif 523 524 pct(top, bot) 525 long top, bot; 526 { 527 long ans; 528 529 if (bot == 0) 530 return(0); 531 ans = (quad_t)top * 100 / bot; 532 return (ans); 533 } 534 535 #define PCT(top, bot) pct((long)(top), (long)(bot)) 536 537 #if defined(tahoe) 538 #include <machine/cpu.h> 539 #endif 540 541 void 542 dosum() 543 { 544 struct nchstats nchstats; 545 #ifndef NEWVM 546 struct xstats xstats; 547 #endif 548 long nchtotal; 549 #if defined(tahoe) 550 struct keystats keystats; 551 #endif 552 553 kread(X_SUM, &sum, sizeof(sum)); 554 (void)printf("%9u cpu context switches\n", sum.v_swtch); 555 (void)printf("%9u device interrupts\n", sum.v_intr); 556 (void)printf("%9u software interrupts\n", sum.v_soft); 557 (void)printf("%9u traps\n", sum.v_trap); 558 (void)printf("%9u system calls\n", sum.v_syscall); 559 (void)printf("%9u total faults taken\n", sum.v_faults); 560 (void)printf("%9u swap ins\n", sum.v_swpin); 561 (void)printf("%9u swap outs\n", sum.v_swpout); 562 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 563 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 564 (void)printf("%9u page ins\n", sum.v_pageins); 565 (void)printf("%9u page outs\n", sum.v_pageouts); 566 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 567 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 568 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 569 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 570 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 571 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 572 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 573 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 574 #ifdef NEWVM 575 (void)printf("%9u VM object cache lookups\n", sum.v_lookups); 576 (void)printf("%9u VM object hits\n", sum.v_hits); 577 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 578 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 579 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 580 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 581 (void)printf("%9u pages free\n", sum.v_free_count); 582 (void)printf("%9u pages wired down\n", sum.v_wire_count); 583 (void)printf("%9u pages active\n", sum.v_active_count); 584 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 585 (void)printf("%9u bytes per page\n", sum.v_page_size); 586 #else 587 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 588 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 589 PCT(sum.v_fastpgrec, sum.v_pgrec)); 590 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 591 (void)printf("%9u executable fill pages created\n", 592 sum.v_nexfod / CLSIZE); 593 (void)printf("%9u executable fill page faults\n", 594 sum.v_exfod / CLSIZE); 595 (void)printf("%9u swap text pages found in free list\n", 596 sum.v_xsfrec); 597 (void)printf("%9u inode text pages found in free list\n", 598 sum.v_xifrec); 599 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 600 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 601 (void)printf("%9u pages freed by the clock daemon\n", 602 sum.v_dfree / CLSIZE); 603 #endif 604 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 605 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 606 nchstats.ncs_badhits + nchstats.ncs_falsehits + 607 nchstats.ncs_miss + nchstats.ncs_long; 608 (void)printf("%9ld total name lookups\n", nchtotal); 609 (void)printf( 610 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 611 "", PCT(nchstats.ncs_goodhits, nchtotal), 612 PCT(nchstats.ncs_neghits, nchtotal), 613 PCT(nchstats.ncs_pass2, nchtotal)); 614 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 615 PCT(nchstats.ncs_badhits, nchtotal), 616 PCT(nchstats.ncs_falsehits, nchtotal), 617 PCT(nchstats.ncs_long, nchtotal)); 618 #ifndef NEWVM 619 kread(X_XSTATS, &xstats, sizeof(xstats)); 620 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 621 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 622 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 623 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 624 (void)printf("%9lu total calls to xfree", xstats.free); 625 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 626 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 627 #endif 628 #if defined(tahoe) 629 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 630 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 631 keystats.ks_allocs, "code cache keys allocated", 632 PCT(keystats.ks_allocfree, keystats.ks_allocs), 633 PCT(keystats.ks_norefs, keystats.ks_allocs), 634 PCT(keystats.ks_taken, keystats.ks_allocs), 635 PCT(keystats.ks_shared, keystats.ks_allocs)); 636 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 637 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 638 keystats.ks_allocs, "data cache keys allocated", 639 PCT(keystats.ks_allocfree, keystats.ks_allocs), 640 PCT(keystats.ks_norefs, keystats.ks_allocs), 641 PCT(keystats.ks_taken, keystats.ks_allocs), 642 PCT(keystats.ks_shared, keystats.ks_allocs)); 643 #endif 644 } 645 646 #ifdef notdef 647 void 648 doforkst() 649 { 650 struct forkstat fks; 651 652 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 653 (void)printf("%d forks, %d pages, average %.2f\n", 654 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 655 (void)printf("%d vforks, %d pages, average %.2f\n", 656 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 657 } 658 #endif 659 660 void 661 dkstats() 662 { 663 register int dn, state; 664 double etime; 665 long tmp; 666 667 for (dn = 0; dn < dk_ndrive; ++dn) { 668 tmp = cur.xfer[dn]; 669 cur.xfer[dn] -= last.xfer[dn]; 670 last.xfer[dn] = tmp; 671 } 672 etime = 0; 673 for (state = 0; state < CPUSTATES; ++state) { 674 tmp = cur.time[state]; 675 cur.time[state] -= last.time[state]; 676 last.time[state] = tmp; 677 etime += cur.time[state]; 678 } 679 if (etime == 0) 680 etime = 1; 681 etime /= hz; 682 for (dn = 0; dn < dk_ndrive; ++dn) { 683 if (!dr_select[dn]) 684 continue; 685 (void)printf("%2.0f ", cur.xfer[dn] / etime); 686 } 687 } 688 689 void 690 cpustats() 691 { 692 register int state; 693 double pct, total; 694 695 total = 0; 696 for (state = 0; state < CPUSTATES; ++state) 697 total += cur.time[state]; 698 if (total) 699 pct = 100 / total; 700 else 701 pct = 0; 702 (void)printf("%2.0f ", (cur.time[CP_USER] + cur.time[CP_NICE]) * pct); 703 (void)printf("%2.0f ", (cur.time[CP_SYS] + cur.time[CP_INTR]) * pct); 704 (void)printf("%2.0f", cur.time[CP_IDLE] * pct); 705 } 706 707 void 708 dointr() 709 { 710 register long *intrcnt, inttotal, uptime; 711 register int nintr, inamlen; 712 register char *intrname; 713 struct evcnt evcnt, *allevents; 714 struct device dev; 715 716 uptime = getuptime(); 717 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 718 inamlen = 719 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 720 intrcnt = malloc((size_t)nintr); 721 intrname = malloc((size_t)inamlen); 722 if (intrcnt == NULL || intrname == NULL) { 723 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 724 exit(1); 725 } 726 kread(X_INTRCNT, intrcnt, (size_t)nintr); 727 kread(X_INTRNAMES, intrname, (size_t)inamlen); 728 (void)printf("interrupt total rate\n"); 729 inttotal = 0; 730 nintr /= sizeof(long); 731 while (--nintr >= 0) { 732 if (*intrcnt) 733 (void)printf("%-12s %8ld %8ld\n", intrname, 734 *intrcnt, *intrcnt / uptime); 735 intrname += strlen(intrname) + 1; 736 inttotal += *intrcnt++; 737 } 738 kread(X_ALLEVENTS, &allevents, sizeof allevents); 739 while (allevents) { 740 if (kvm_read(kd, (long)allevents, (void *)&evcnt, 741 sizeof evcnt) != sizeof evcnt) { 742 (void)fprintf(stderr, "vmstat: event chain trashed\n", 743 kvm_geterr(kd)); 744 exit(1); 745 } 746 if (strcmp(evcnt.ev_name, "intr") == 0) { 747 if (kvm_read(kd, (long)evcnt.ev_dev, (void *)&dev, 748 sizeof dev) != sizeof dev) { 749 (void)fprintf(stderr, "vmstat: event chain trashed\n", 750 kvm_geterr(kd)); 751 exit(1); 752 } 753 if (evcnt.ev_count) 754 (void)printf("%-12s %8ld %8ld\n", dev.dv_xname, 755 evcnt.ev_count, evcnt.ev_count / uptime); 756 } 757 allevents = evcnt.ev_next; 758 } 759 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 760 } 761 762 /* 763 * These names are defined in <sys/malloc.h>. 764 */ 765 char *kmemnames[] = INITKMEMNAMES; 766 767 void 768 domem() 769 { 770 register struct kmembuckets *kp; 771 register struct kmemstats *ks; 772 register int i, j; 773 int len, size, first; 774 long totuse = 0, totfree = 0, totreq = 0; 775 char *name; 776 struct kmemstats kmemstats[M_LAST]; 777 struct kmembuckets buckets[MINBUCKET + 16]; 778 779 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 780 (void)printf("Memory statistics by bucket size\n"); 781 (void)printf( 782 " Size In Use Free Requests HighWater Couldfree\n"); 783 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 784 if (kp->kb_calls == 0) 785 continue; 786 size = 1 << i; 787 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 788 kp->kb_total - kp->kb_totalfree, 789 kp->kb_totalfree, kp->kb_calls, 790 kp->kb_highwat, kp->kb_couldfree); 791 totfree += size * kp->kb_totalfree; 792 } 793 794 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 795 (void)printf("\nMemory usage type by bucket size\n"); 796 (void)printf(" Size Type(s)\n"); 797 kp = &buckets[MINBUCKET]; 798 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 799 if (kp->kb_calls == 0) 800 continue; 801 first = 1; 802 len = 8; 803 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 804 if (ks->ks_calls == 0) 805 continue; 806 if ((ks->ks_size & j) == 0) 807 continue; 808 name = kmemnames[i] ? kmemnames[i] : "undefined"; 809 len += 2 + strlen(name); 810 if (first) 811 printf("%8d %s", j, name); 812 else 813 printf(","); 814 if (len >= 80) { 815 printf("\n\t "); 816 len = 10 + strlen(name); 817 } 818 if (!first) 819 printf(" %s", name); 820 first = 0; 821 } 822 printf("\n"); 823 } 824 825 (void)printf( 826 "\nMemory statistics by type Type Kern\n"); 827 (void)printf( 828 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 829 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 830 if (ks->ks_calls == 0) 831 continue; 832 (void)printf("%12s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 833 kmemnames[i] ? kmemnames[i] : "undefined", 834 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 835 (ks->ks_maxused + 1023) / 1024, 836 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 837 ks->ks_limblocks, ks->ks_mapblocks); 838 first = 1; 839 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 840 if ((ks->ks_size & j) == 0) 841 continue; 842 if (first) 843 printf(" %d", j); 844 else 845 printf(",%d", j); 846 first = 0; 847 } 848 printf("\n"); 849 totuse += ks->ks_memuse; 850 totreq += ks->ks_calls; 851 } 852 (void)printf("\nMemory Totals: In Use Free Requests\n"); 853 (void)printf(" %7ldK %6ldK %8ld\n", 854 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 855 } 856 857 /* 858 * kread reads something from the kernel, given its nlist index. 859 */ 860 void 861 kread(nlx, addr, size) 862 int nlx; 863 void *addr; 864 size_t size; 865 { 866 char *sym; 867 868 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 869 sym = namelist[nlx].n_name; 870 if (*sym == '_') 871 ++sym; 872 (void)fprintf(stderr, 873 "vmstat: symbol %s not defined\n", sym); 874 exit(1); 875 } 876 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 877 sym = namelist[nlx].n_name; 878 if (*sym == '_') 879 ++sym; 880 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 881 exit(1); 882 } 883 } 884 885 void 886 usage() 887 { 888 (void)fprintf(stderr, 889 #ifndef NEWVM 890 "usage: vmstat [-fimst] [-c count] [-M core] \ 891 [-N system] [-w wait] [disks]\n"); 892 #else 893 "usage: vmstat [-ims] [-c count] [-M core] \ 894 [-N system] [-w wait] [disks]\n"); 895 #endif 896 exit(1); 897 } 898 899
Indexes created Tue Sep 23 02:09:52 GMT 2025