vmstat.c revision 1.6
1 /* 2 * Copyright (c) 1980, 1986, 1991 The Regents of the University of California. 3 * 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 char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1991 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)vmstat.c 5.31 (Berkeley) 7/2/91";*/ 42 static char rcsid[] = "$Id: vmstat.c,v 1.6 1993/08/01 18:03:21 mycroft 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/vmmeter.h> 57 #include <vm/vm.h> 58 #include <vm/vm_statistics.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 70 #define NEWVM /* XXX till old has been updated or purged */ 71 struct nlist nl[] = { 72 #define X_CPTIME 0 73 { "_cp_time" }, 74 #define X_TOTAL 1 75 { "_total" }, 76 #define X_SUM 2 77 { "_cnt" }, /* XXX for now that's where it is */ 78 #define X_BOOTTIME 3 79 { "_boottime" }, 80 #define X_DKXFER 4 81 { "_dk_xfer" }, 82 #define X_HZ 5 83 { "_hz" }, 84 #define X_PHZ 6 85 { "_phz" }, 86 #define X_NCHSTATS 7 87 { "_nchstats" }, 88 #define X_INTRNAMES 8 89 { "_intrnames" }, 90 #define X_EINTRNAMES 9 91 { "_eintrnames" }, 92 #define X_INTRCNT 10 93 { "_intrcnt" }, 94 #define X_EINTRCNT 11 95 { "_eintrcnt" }, 96 #define X_DK_NDRIVE 12 97 { "_dk_ndrive" }, 98 #define X_KMEMSTAT 13 99 { "_kmemstats" }, 100 #define X_KMEMBUCKETS 14 101 { "_bucket" }, 102 #define X_VMSTAT 15 103 { "_vm_stat" }, 104 #ifdef notdef 105 #define X_DEFICIT 15 106 { "_deficit" }, 107 #define X_FORKSTAT 16 108 { "_forkstat" }, 109 #define X_REC 17 110 { "_rectime" }, 111 #define X_PGIN 18 112 { "_pgintime" }, 113 #define X_XSTATS 19 114 { "_xstats" }, 115 #define X_END 19 116 #else 117 #define X_END 15 118 #endif 119 #ifdef hp300 120 #define X_HPDINIT (X_END+1) 121 { "_hp_dinit" }, 122 #endif 123 #ifdef tahoe 124 #define X_VBDINIT (X_END+1) 125 { "_vbdinit" }, 126 #define X_CKEYSTATS (X_END+2) 127 { "_ckeystats" }, 128 #define X_DKEYSTATS (X_END+3) 129 { "_dkeystats" }, 130 #endif 131 #ifdef vax 132 #define X_MBDINIT (X_END+1) 133 { "_mbdinit" }, 134 #define X_UBDINIT (X_END+2) 135 { "_ubdinit" }, 136 #endif 137 #ifdef i386 138 #define X_FREE (X_END+1) 139 { "_vm_page_free_count" }, 140 #define X_ACTIVE (X_END+2) 141 { "_vm_page_active_count" }, 142 #define X_INACTIVE (X_END+3) 143 { "_vm_page_inactive_count" }, 144 #define X_WIRED (X_END+4) 145 { "_vm_page_wire_count" }, 146 #define X_PAGESIZE (X_END+5) 147 { "_page_size" }, 148 #define X_ISA_BIO (X_END+6) 149 { "_isa_subdev" }, 150 #endif i386 151 { "" }, 152 }; 153 154 struct _disk { 155 long time[CPUSTATES]; 156 long *xfer; 157 } cur, last; 158 159 struct vm_statistics vm_stat, ostat; 160 struct vmmeter sum, osum; 161 char *vmunix = _PATH_UNIX; 162 char **dr_name; 163 int *dr_select, dk_ndrive, ndrives; 164 #ifdef __386BSD__ 165 /* to make up for statistics that don't get updated */ 166 int size, free_count, active_count, inactive, wired; 167 #endif 168 169 int winlines = 20; 170 171 #define FORKSTAT 0x01 172 #define INTRSTAT 0x02 173 #define MEMSTAT 0x04 174 #define SUMSTAT 0x08 175 #define TIMESTAT 0x10 176 #define VMSTAT 0x20 177 178 #include "names.c" /* disk names -- machine dependent */ 179 180 void cpustats(), dkstats(), dointr(), domem(), dosum(); 181 void dovmstat(), kread(), usage(); 182 #ifdef notdef 183 void dotimes(), doforkst(); 184 #endif 185 186 main(argc, argv) 187 register int argc; 188 register char **argv; 189 { 190 extern int optind; 191 extern char *optarg; 192 register int c, todo; 193 u_int interval; 194 int reps; 195 char *kmem; 196 197 kmem = NULL; 198 interval = reps = todo = 0; 199 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 200 switch (c) { 201 case 'c': 202 reps = atoi(optarg); 203 break; 204 #ifndef notdef 205 case 'f': 206 todo |= FORKSTAT; 207 break; 208 #endif 209 case 'i': 210 todo |= INTRSTAT; 211 break; 212 case 'M': 213 kmem = optarg; 214 break; 215 case 'm': 216 todo |= MEMSTAT; 217 break; 218 case 'N': 219 vmunix = optarg; 220 break; 221 case 's': 222 todo |= SUMSTAT; 223 break; 224 #ifndef notdef 225 case 't': 226 todo |= TIMESTAT; 227 break; 228 #endif 229 case 'w': 230 interval = atoi(optarg); 231 break; 232 case '?': 233 default: 234 usage(); 235 } 236 } 237 argc -= optind; 238 argv += optind; 239 240 if (todo == 0) 241 todo = VMSTAT; 242 243 if (kvm_openfiles(vmunix, kmem, NULL) < 0) { 244 (void)fprintf(stderr, 245 "vmstat: kvm_openfiles: %s\n", kvm_geterr()); 246 exit(1); 247 } 248 249 if ((c = kvm_nlist(nl)) != 0) { 250 if (c > 0) { 251 (void)fprintf(stderr, 252 "vmstat: undefined symbols in %s:", vmunix); 253 for (c = 0; c < sizeof(nl)/sizeof(nl[0]); c++) 254 if (nl[c].n_type == 0) 255 fprintf(stderr, " %s", nl[c].n_name); 256 (void)fputc('\n', stderr); 257 } else 258 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 259 kvm_geterr()); 260 exit(1); 261 } 262 263 if (todo & VMSTAT) { 264 char **getdrivedata(); 265 struct winsize winsize; 266 267 argv = getdrivedata(argv); 268 winsize.ws_row = 0; 269 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 270 if (winsize.ws_row > 0) 271 winlines = winsize.ws_row; 272 273 } 274 275 #define BACKWARD_COMPATIBILITY 276 #ifdef BACKWARD_COMPATIBILITY 277 if (*argv) { 278 interval = atoi(*argv); 279 if (*++argv) 280 reps = atoi(*argv); 281 } 282 #endif 283 284 if (interval) { 285 if (!reps) 286 reps = -1; 287 } else if (reps) 288 interval = 1; 289 290 #ifdef notdef 291 if (todo & FORKSTAT) 292 doforkst(); 293 #endif 294 if (todo & MEMSTAT) 295 domem(); 296 if (todo & SUMSTAT) 297 dosum(); 298 #ifdef notdef 299 if (todo & TIMESTAT) 300 dotimes(); 301 #endif 302 if (todo & INTRSTAT) 303 dointr(); 304 if (todo & VMSTAT) 305 dovmstat(interval, reps); 306 exit(0); 307 } 308 309 char ** 310 getdrivedata(argv) 311 char **argv; 312 { 313 register int i; 314 register char **cp; 315 char buf[30]; 316 317 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 318 if (dk_ndrive <= 0) { 319 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 320 exit(1); 321 } 322 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 323 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 324 for (i = 0; i < dk_ndrive; i++) 325 dr_name[i] = NULL; 326 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 327 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 328 read_names(); 329 for (i = 0; i < dk_ndrive; i++) 330 if (dr_name[i] == NULL) { 331 (void)sprintf(buf, "??%d", i); 332 dr_name[i] = strdup(buf); 333 } 334 335 /* 336 * Choose drives to be displayed. Priority goes to (in order) drives 337 * supplied as arguments, default drives. If everything isn't filled 338 * in and there are drives not taken care of, display the first few 339 * that fit. 340 */ 341 #define BACKWARD_COMPATIBILITY 342 for (ndrives = 0; *argv; ++argv) { 343 #ifdef BACKWARD_COMPATIBILITY 344 if (isdigit(**argv)) 345 break; 346 #endif 347 for (i = 0; i < dk_ndrive; i++) { 348 if (strcmp(dr_name[i], *argv)) 349 continue; 350 dr_select[i] = 1; 351 ++ndrives; 352 break; 353 } 354 } 355 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 356 if (dr_select[i]) 357 continue; 358 for (cp = defdrives; *cp; cp++) 359 if (strcmp(dr_name[i], *cp) == 0) { 360 dr_select[i] = 1; 361 ++ndrives; 362 break; 363 } 364 } 365 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 366 if (dr_select[i]) 367 continue; 368 dr_select[i] = 1; 369 ++ndrives; 370 } 371 return(argv); 372 } 373 374 #ifdef __386BSD__ 375 /* 376 * Make up for the fact that under 0.1, VM doesn't update all of the 377 * fields in the statistics structures. 378 */ 379 380 void 381 fill_in_vm_stat(vm_stat) 382 struct vm_statistics *vm_stat; 383 { 384 kread(X_FREE, &vm_stat->free_count, sizeof(vm_stat->free_count)); 385 kread(X_ACTIVE, &vm_stat->active_count, sizeof(vm_stat->active_count)); 386 kread(X_INACTIVE, &vm_stat->inactive_count, 387 sizeof(vm_stat->inactive_count)); 388 kread(X_WIRED, &vm_stat->wire_count, sizeof(vm_stat->wire_count)); 389 kread(X_PAGESIZE, &vm_stat->pagesize, sizeof(vm_stat->pagesize)); 390 } 391 #endif 392 393 long 394 getuptime() 395 { 396 static time_t now, boottime; 397 time_t uptime; 398 399 if (boottime == 0) 400 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 401 (void)time(&now); 402 uptime = now - boottime; 403 if (uptime <= 0 || uptime > 60*60*24*365*10) { 404 (void)fprintf(stderr, 405 "vmstat: time makes no sense; namelist must be wrong.\n"); 406 exit(1); 407 } 408 return(uptime); 409 } 410 411 int hz, hdrcnt; 412 413 void 414 dovmstat(interval, reps) 415 u_int interval; 416 int reps; 417 { 418 struct vmtotal total; 419 time_t uptime, halfuptime; 420 void needhdr(); 421 #ifndef notdef 422 int deficit; 423 #endif 424 425 uptime = getuptime(); 426 halfuptime = uptime / 2; 427 (void)signal(SIGCONT, needhdr); 428 429 if (nl[X_PHZ].n_type != 0 && nl[X_PHZ].n_value != 0) 430 kread(X_PHZ, &hz, sizeof(hz)); 431 if (!hz) 432 kread(X_HZ, &hz, sizeof(hz)); 433 434 for (hdrcnt = 1;;) { 435 if (!--hdrcnt) 436 printhdr(); 437 kread(X_CPTIME, cur.time, sizeof(cur.time)); 438 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer * dk_ndrive)); 439 kread(X_SUM, &sum, sizeof(sum)); 440 kread(X_TOTAL, &total, sizeof(total)); 441 kread(X_VMSTAT, &vm_stat, sizeof(vm_stat)); 442 #ifdef __386BSD__ 443 fill_in_vm_stat (&vm_stat); 444 #endif 445 #ifdef notdef 446 kread(X_DEFICIT, &deficit, sizeof(deficit)); 447 #endif 448 (void)printf("%2d %1d %1d ", 449 total.t_rq, total.t_dw + total.t_pw, total.t_sw); 450 #define pgtok(a) ((a)*NBPG >> 10) 451 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 452 (void)printf("%5ld %5ld ", 453 #ifdef __386BSD__ 454 pgtok(vm_stat.active_count), pgtok(vm_stat.free_count)); 455 #else 456 pgtok(total.t_avm), pgtok(total.t_free)); 457 #endif 458 #ifdef NEWVM 459 (void)printf("%4lu ", rate(vm_stat.faults - ostat.faults)); 460 (void)printf("%3lu ", 461 rate(vm_stat.reactivations - ostat.reactivations)); 462 (void)printf("%3lu ", rate(vm_stat.pageins - ostat.pageins)); 463 (void)printf("%3lu %3lu ", 464 rate(vm_stat.pageouts - ostat.pageouts), 0); 465 #else 466 (void)printf("%3lu %2lu ", 467 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 468 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 469 rate(sum.v_xsfrec + sum.v_xifrec - 470 osum.v_xsfrec - osum.v_xifrec)); 471 (void)printf("%3lu ", 472 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 473 (void)printf("%3lu %3lu ", 474 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 475 rate(pgtok(sum.v_dfree - osum.v_dfree))); 476 (void)printf("%3d ", pgtok(deficit)); 477 #endif 478 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 479 dkstats(); 480 (void)printf("%4lu %4lu %3lu ", 481 rate(sum.v_intr - osum.v_intr), 482 rate(sum.v_syscall - osum.v_syscall), 483 rate(sum.v_swtch - osum.v_swtch)); 484 cpustats(); 485 (void)printf("\n"); 486 (void)fflush(stdout); 487 if (reps >= 0 && --reps <= 0) 488 break; 489 osum = sum; 490 ostat = vm_stat; 491 uptime = interval; 492 /* 493 * We round upward to avoid losing low-frequency events 494 * (i.e., >= 1 per interval but < 1 per second). 495 */ 496 halfuptime = (uptime + 1) / 2; 497 (void)sleep(interval); 498 } 499 } 500 501 printhdr() 502 { 503 register int i; 504 505 (void)printf(" procs memory page%*s", 20, ""); 506 if (ndrives > 1) 507 (void)printf("disks %*s faults cpu\n", 508 ndrives * 3 - 6, ""); 509 else 510 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 511 #ifndef NEWVM 512 (void)printf(" r b w avm fre re at pi po fr de sr "); 513 #else 514 (void)printf(" r b w avm fre flt re pi po fr sr "); 515 #endif 516 for (i = 0; i < dk_ndrive; i++) 517 if (dr_select[i]) 518 (void)printf("%c%c ", dr_name[i][0], 519 dr_name[i][strlen(dr_name[i]) - 1]); 520 (void)printf(" in sy cs us sy id\n"); 521 hdrcnt = winlines - 2; 522 } 523 524 /* 525 * Force a header to be prepended to the next output. 526 */ 527 void 528 needhdr() 529 { 530 531 hdrcnt = 1; 532 } 533 534 #ifdef notdef 535 void 536 dotimes() 537 { 538 u_int pgintime, rectime; 539 540 kread(X_REC, &rectime, sizeof(rectime)); 541 kread(X_PGIN, &pgintime, sizeof(pgintime)); 542 kread(X_SUM, &sum, sizeof(sum)); 543 (void)printf("%u reclaims, %u total time (usec)\n", 544 sum.v_pgrec, rectime); 545 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 546 (void)printf("\n"); 547 (void)printf("%u page ins, %u total time (msec)\n", 548 sum.v_pgin, pgintime / 10); 549 (void)printf("average: %8.1f msec / page in\n", 550 pgintime / (sum.v_pgin * 10.0)); 551 } 552 #endif 553 554 pct(top, bot) 555 long top, bot; 556 { 557 if (bot == 0) 558 return(0); 559 return((top * 100) / bot); 560 } 561 562 #define PCT(top, bot) pct((long)(top), (long)(bot)) 563 564 #if defined(tahoe) 565 #include <machine/cpu.h> 566 #endif 567 568 void 569 dosum() 570 { 571 struct nchstats nchstats; 572 #ifndef NEWVM 573 struct xstats xstats; 574 #endif 575 long nchtotal; 576 #if defined(tahoe) 577 struct keystats keystats; 578 #endif 579 580 kread(X_SUM, &sum, sizeof(sum)); 581 #ifdef NEWVM 582 kread(X_VMSTAT, &vm_stat, sizeof(vm_stat)); 583 #ifdef __386BSD__ 584 fill_in_vm_stat(&vm_stat); 585 #endif 586 #else 587 (void)printf("%9u swap ins\n", sum.v_swpin); 588 (void)printf("%9u swap outs\n", sum.v_swpout); 589 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 590 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 591 (void)printf("%9u total address trans. faults taken\n", sum.v_faults); 592 (void)printf("%9u page ins\n", sum.v_pgin); 593 (void)printf("%9u page outs\n", sum.v_pgout); 594 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 595 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 596 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 597 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 598 PCT(sum.v_fastpgrec, sum.v_pgrec)); 599 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 600 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 601 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 602 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 603 (void)printf("%9u executable fill pages created\n", 604 sum.v_nexfod / CLSIZE); 605 (void)printf("%9u executable fill page faults\n", 606 sum.v_exfod / CLSIZE); 607 (void)printf("%9u swap text pages found in free list\n", 608 sum.v_xsfrec); 609 (void)printf("%9u inode text pages found in free list\n", 610 sum.v_xifrec); 611 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 612 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 613 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 614 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 615 (void)printf("%9u pages freed by the clock daemon\n", 616 sum.v_dfree / CLSIZE); 617 #endif 618 (void)printf("%9u cpu context switches\n", sum.v_swtch); 619 (void)printf("%9u device interrupts\n", sum.v_intr); 620 (void)printf("%9u software interrupts\n", sum.v_soft); 621 #ifdef vax 622 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 623 #endif 624 (void)printf("%9u traps\n", sum.v_trap); 625 (void)printf("%9u system calls\n", sum.v_syscall); 626 #ifdef NEWVM 627 (void)printf("%9u bytes per page\n", vm_stat.pagesize); 628 (void)printf("%9u pages free\n", vm_stat.free_count); 629 (void)printf("%9u pages active\n", vm_stat.active_count); 630 (void)printf("%9u pages inactive\n", vm_stat.inactive_count); 631 (void)printf("%9u pages wired down\n", vm_stat.wire_count); 632 (void)printf("%9u zero-fill pages\n", vm_stat.zero_fill_count); 633 (void)printf("%9u pages reactivated\n", vm_stat.reactivations); 634 (void)printf("%9u pageins\n", vm_stat.pageins); 635 (void)printf("%9u pageouts\n", vm_stat.pageouts); 636 (void)printf("%9u VM faults\n", vm_stat.faults); 637 (void)printf("%9u copy-on-write faults\n", vm_stat.cow_faults); 638 (void)printf("%9u VM object cache lookups\n", vm_stat.lookups); 639 (void)printf("%9u VM object hits\n", vm_stat.hits); 640 #endif 641 642 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 643 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 644 nchstats.ncs_badhits + nchstats.ncs_falsehits + 645 nchstats.ncs_miss + nchstats.ncs_long; 646 (void)printf("%9ld total name lookups\n", nchtotal); 647 (void)printf( 648 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 649 "", PCT(nchstats.ncs_goodhits, nchtotal), 650 PCT(nchstats.ncs_neghits, nchtotal), 651 PCT(nchstats.ncs_pass2, nchtotal)); 652 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 653 PCT(nchstats.ncs_badhits, nchtotal), 654 PCT(nchstats.ncs_falsehits, nchtotal), 655 PCT(nchstats.ncs_long, nchtotal)); 656 #ifndef NEWVM 657 kread(X_XSTATS, &xstats, sizeof(xstats)); 658 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 659 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 660 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 661 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 662 (void)printf("%9lu total calls to xfree", xstats.free); 663 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 664 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 665 #endif 666 #if defined(tahoe) 667 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 668 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 669 keystats.ks_allocs, "code cache keys allocated", 670 PCT(keystats.ks_allocfree, keystats.ks_allocs), 671 PCT(keystats.ks_norefs, keystats.ks_allocs), 672 PCT(keystats.ks_taken, keystats.ks_allocs), 673 PCT(keystats.ks_shared, keystats.ks_allocs)); 674 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 675 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 676 keystats.ks_allocs, "data cache keys allocated", 677 PCT(keystats.ks_allocfree, keystats.ks_allocs), 678 PCT(keystats.ks_norefs, keystats.ks_allocs), 679 PCT(keystats.ks_taken, keystats.ks_allocs), 680 PCT(keystats.ks_shared, keystats.ks_allocs)); 681 #endif 682 } 683 684 #ifdef notdef 685 void 686 doforkst() 687 { 688 struct forkstat fks; 689 690 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 691 (void)printf("%d forks, %d pages, average %.2f\n", 692 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 693 (void)printf("%d vforks, %d pages, average %.2f\n", 694 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 695 } 696 #endif 697 698 void 699 dkstats() 700 { 701 register int dn, state; 702 double etime; 703 long tmp; 704 705 for (dn = 0; dn < dk_ndrive; ++dn) { 706 tmp = cur.xfer[dn]; 707 cur.xfer[dn] -= last.xfer[dn]; 708 last.xfer[dn] = tmp; 709 } 710 etime = 0; 711 for (state = 0; state < CPUSTATES; ++state) { 712 tmp = cur.time[state]; 713 cur.time[state] -= last.time[state]; 714 last.time[state] = tmp; 715 etime += cur.time[state]; 716 } 717 if (etime == 0) 718 etime = 1; 719 etime /= hz; 720 for (dn = 0; dn < dk_ndrive; ++dn) { 721 if (!dr_select[dn]) 722 continue; 723 (void)printf("%2.0f ", cur.xfer[dn] / etime); 724 } 725 } 726 727 void 728 cpustats() 729 { 730 register int state; 731 double pct, total; 732 733 total = 0; 734 for (state = 0; state < CPUSTATES; ++state) 735 total += cur.time[state]; 736 if (total) 737 pct = 100 / total; 738 else 739 pct = 0; 740 (void)printf("%2.0f ", /* user + nice */ 741 (cur.time[0] + cur.time[1]) * pct); 742 (void)printf("%2.0f ", cur.time[2] * pct); /* system */ 743 (void)printf("%2.0f", cur.time[3] * pct); /* idle */ 744 } 745 746 void 747 dointr() 748 { 749 register unsigned long *intrcnt, inttotal, uptime; 750 register int nintr, inamlen; 751 register char *intrname; 752 753 uptime = getuptime(); 754 nintr = nl[X_EINTRCNT].n_value - nl[X_INTRCNT].n_value; 755 inamlen = nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value; 756 intrcnt = malloc((size_t)nintr); 757 intrname = malloc((size_t)inamlen); 758 if (intrcnt == NULL || intrname == NULL) { 759 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 760 exit(1); 761 } 762 kread(X_INTRCNT, intrcnt, (size_t)nintr); 763 kread(X_INTRNAMES, intrname, (size_t)inamlen); 764 (void)printf("%-12s %10s %8s\n", "interrupt", "count", "rate"); 765 inttotal = 0; 766 nintr /= sizeof(long); 767 while (--nintr >= 0) { 768 if (*intrcnt) 769 (void)printf("%-12s %10lu %8lu\n", intrname, 770 *intrcnt, *intrcnt / uptime); 771 intrname += strlen(intrname) + 1; 772 inttotal += *intrcnt++; 773 } 774 (void)printf("%-12s %10lu %8lu\n", "Total", inttotal, inttotal / uptime); 775 } 776 777 /* 778 * These names are defined in <sys/malloc.h>. 779 */ 780 char *kmemnames[] = INITKMEMNAMES; 781 782 void 783 domem() 784 { 785 register struct kmembuckets *kp; 786 register struct kmemstats *ks; 787 register int i; 788 int size; 789 long totuse = 0, totfree = 0, totreq = 0; 790 struct kmemstats kmemstats[M_LAST + 1]; 791 struct kmembuckets buckets[MINBUCKET + 16]; 792 793 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 794 (void)printf("Memory statistics by bucket size\n"); 795 (void)printf( 796 " Size In Use Free Requests HighWater Couldfree\n"); 797 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 798 if (kp->kb_calls == 0) 799 continue; 800 size = 1 << i; 801 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 802 kp->kb_total - kp->kb_totalfree, 803 kp->kb_totalfree, kp->kb_calls, 804 kp->kb_highwat, kp->kb_couldfree); 805 totfree += size * kp->kb_totalfree; 806 } 807 808 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 809 (void)printf("\nMemory statistics by type\n"); 810 (void)printf( 811 " Type In Use MemUse HighUse Limit Requests TypeLimit KernLimit\n"); 812 for (i = 0, ks = &kmemstats[0]; i <= M_LAST; i++, ks++) { 813 if (ks->ks_calls == 0) 814 continue; 815 (void)printf("%10s %6ld %7ldK %8ldK %5ldK %8ld %6u %9u\n", 816 kmemnames[i] ? kmemnames[i] : "undefined", 817 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 818 (ks->ks_maxused + 1023) / 1024, 819 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 820 ks->ks_limblocks, ks->ks_mapblocks); 821 totuse += ks->ks_memuse; 822 totreq += ks->ks_calls; 823 } 824 (void)printf("\nMemory Totals: In Use Free Requests\n"); 825 (void)printf(" %7ldK %6ldK %8ld\n", 826 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 827 } 828 829 /* 830 * kread reads something from the kernel, given its nlist index. 831 */ 832 void 833 kread(nlx, addr, size) 834 int nlx; 835 void *addr; 836 size_t size; 837 { 838 char *sym; 839 840 if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) { 841 sym = nl[nlx].n_name; 842 if (*sym == '_') 843 ++sym; 844 (void)fprintf(stderr, 845 "vmstat: %s: symbol %s not defined\n", vmunix, sym); 846 exit(1); 847 } 848 if (kvm_read((void *)nl[nlx].n_value, addr, size) != size) { 849 sym = nl[nlx].n_name; 850 if (*sym == '_') 851 ++sym; 852 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr()); 853 exit(1); 854 } 855 } 856 857 void 858 usage() 859 { 860 (void)fprintf(stderr, 861 #ifndef NEWVM 862 "usage: vmstat [-fimst] [-c count] [-M core] \ 863 [-N system] [-w wait] [disks]\n"); 864 #else 865 "usage: vmstat [-ims] [-c count] [-M core] \ 866 [-N system] [-w wait] [disks]\n"); 867 #endif 868 exit(1); 869 } 870
Indexes created Wed Sep 24 05:09:52 GMT 2025