vmstat.c revision 1.1
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[] = "@(#)vmstat.c 5.31 (Berkeley) 7/2/91"; 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/vmmeter.h> 56 #include <vm/vm.h> 57 #include <vm/vm_statistics.h> 58 #include <time.h> 59 #include <nlist.h> 60 #include <kvm.h> 61 #include <errno.h> 62 #include <unistd.h> 63 #include <stdio.h> 64 #include <ctype.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <paths.h> 68 69 #define NEWVM /* XXX till old has been updated or purged */ 70 struct nlist nl[] = { 71 #define X_CPTIME 0 72 { "_cp_time" }, 73 #define X_TOTAL 1 74 { "_total" }, 75 #define X_SUM 2 76 { "_cnt" }, /* XXX for now that's where it is */ 77 #define X_BOOTTIME 3 78 { "_boottime" }, 79 #define X_DKXFER 4 80 { "_dk_xfer" }, 81 #define X_HZ 5 82 { "_hz" }, 83 #define X_PHZ 6 84 { "_phz" }, 85 #define X_NCHSTATS 7 86 { "_nchstats" }, 87 #define X_INTRNAMES 8 88 { "_intrnames" }, 89 #define X_EINTRNAMES 9 90 { "_eintrnames" }, 91 #define X_INTRCNT 10 92 { "_intrcnt" }, 93 #define X_EINTRCNT 11 94 { "_eintrcnt" }, 95 #define X_DK_NDRIVE 12 96 { "_dk_ndrive" }, 97 #define X_KMEMSTAT 13 98 { "_kmemstats" }, 99 #define X_KMEMBUCKETS 14 100 { "_bucket" }, 101 #define X_VMSTAT 15 102 { "_vm_stat" }, 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 19 115 #else 116 #define X_END 15 117 #endif 118 #ifdef hp300 119 #define X_HPDINIT (X_END+1) 120 { "_hp_dinit" }, 121 #endif 122 #ifdef tahoe 123 #define X_VBDINIT (X_END+1) 124 { "_vbdinit" }, 125 #define X_CKEYSTATS (X_END+2) 126 { "_ckeystats" }, 127 #define X_DKEYSTATS (X_END+3) 128 { "_dkeystats" }, 129 #endif 130 #ifdef vax 131 #define X_MBDINIT (X_END+1) 132 { "_mbdinit" }, 133 #define X_UBDINIT (X_END+2) 134 { "_ubdinit" }, 135 #endif 136 #ifdef __386BSD__ 137 #define X_FREE (X_END+1) 138 { "_vm_page_free_count" }, 139 #define X_ACTIVE (X_END+2) 140 { "_vm_page_active_count" }, 141 #define X_INACTIVE (X_END+3) 142 { "_vm_page_inactive_count" }, 143 #define X_WIRED (X_END+4) 144 { "_vm_page_wire_count" }, 145 #define X_PAGESIZE (X_END+5) 146 { "_page_size" }, 147 #define X_ISA_BIO (X_END+6) 148 { "_isa_devtab_bio" }, 149 #endif /* __386BSD__ */ 150 { "" }, 151 }; 152 153 struct _disk { 154 long time[CPUSTATES]; 155 long *xfer; 156 } cur, last; 157 158 struct vm_statistics vm_stat, ostat; 159 struct vmmeter sum, osum; 160 char *vmunix = _PATH_UNIX; 161 char **dr_name; 162 int *dr_select, dk_ndrive, ndrives; 163 #ifdef __386BSD__ 164 /* to make up for statistics that don't get updated */ 165 int size, free_count, active_count, inactive, wired; 166 #endif 167 168 int winlines = 20; 169 170 #define FORKSTAT 0x01 171 #define INTRSTAT 0x02 172 #define MEMSTAT 0x04 173 #define SUMSTAT 0x08 174 #define TIMESTAT 0x10 175 #define VMSTAT 0x20 176 177 #include "names.c" /* disk names -- machine dependent */ 178 179 void cpustats(), dkstats(), dointr(), domem(), dosum(); 180 void dovmstat(), kread(), usage(); 181 #ifdef notdef 182 void dotimes(), doforkst(); 183 #endif 184 185 main(argc, argv) 186 register int argc; 187 register char **argv; 188 { 189 extern int optind; 190 extern char *optarg; 191 register int c, todo; 192 u_int interval; 193 int reps; 194 char *kmem; 195 196 kmem = NULL; 197 interval = reps = todo = 0; 198 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 199 switch (c) { 200 case 'c': 201 reps = atoi(optarg); 202 break; 203 #ifndef notdef 204 case 'f': 205 todo |= FORKSTAT; 206 break; 207 #endif 208 case 'i': 209 todo |= INTRSTAT; 210 break; 211 case 'M': 212 kmem = optarg; 213 break; 214 case 'm': 215 todo |= MEMSTAT; 216 break; 217 case 'N': 218 vmunix = optarg; 219 break; 220 case 's': 221 todo |= SUMSTAT; 222 break; 223 #ifndef notdef 224 case 't': 225 todo |= TIMESTAT; 226 break; 227 #endif 228 case 'w': 229 interval = atoi(optarg); 230 break; 231 case '?': 232 default: 233 usage(); 234 } 235 } 236 argc -= optind; 237 argv += optind; 238 239 if (todo == 0) 240 todo = VMSTAT; 241 242 if (kvm_openfiles(vmunix, kmem, NULL) < 0) { 243 (void)fprintf(stderr, 244 "vmstat: kvm_openfiles: %s\n", kvm_geterr()); 245 exit(1); 246 } 247 248 if ((c = kvm_nlist(nl)) != 0) { 249 if (c > 0) { 250 (void)fprintf(stderr, 251 "vmstat: undefined symbols in %s:", vmunix); 252 for (c = 0; c < sizeof(nl)/sizeof(nl[0]); c++) 253 if (nl[c].n_type == 0) 254 fprintf(stderr, " %s", nl[c].n_name); 255 (void)fputc('\n', stderr); 256 } else 257 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 258 kvm_geterr()); 259 exit(1); 260 } 261 262 if (todo & VMSTAT) { 263 char **getdrivedata(); 264 struct winsize winsize; 265 266 argv = getdrivedata(argv); 267 winsize.ws_row = 0; 268 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 269 if (winsize.ws_row > 0) 270 winlines = winsize.ws_row; 271 272 } 273 274 #define BACKWARD_COMPATIBILITY 275 #ifdef BACKWARD_COMPATIBILITY 276 if (*argv) { 277 interval = atoi(*argv); 278 if (*++argv) 279 reps = atoi(*argv); 280 } 281 #endif 282 283 if (interval) { 284 if (!reps) 285 reps = -1; 286 } else if (reps) 287 interval = 1; 288 289 #ifdef notdef 290 if (todo & FORKSTAT) 291 doforkst(); 292 #endif 293 if (todo & MEMSTAT) 294 domem(); 295 if (todo & SUMSTAT) 296 dosum(); 297 #ifdef notdef 298 if (todo & TIMESTAT) 299 dotimes(); 300 #endif 301 if (todo & INTRSTAT) 302 dointr(); 303 if (todo & VMSTAT) 304 dovmstat(interval, reps); 305 exit(0); 306 } 307 308 char ** 309 getdrivedata(argv) 310 char **argv; 311 { 312 register int i; 313 register char **cp; 314 char buf[30]; 315 316 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 317 if (dk_ndrive <= 0) { 318 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 319 exit(1); 320 } 321 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 322 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 323 for (i = 0; i < dk_ndrive; i++) 324 dr_name[i] = NULL; 325 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 326 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 327 read_names(); 328 for (i = 0; i < dk_ndrive; i++) 329 if (dr_name[i] == NULL) { 330 (void)sprintf(buf, "??%d", i); 331 dr_name[i] = strdup(buf); 332 } 333 334 /* 335 * Choose drives to be displayed. Priority goes to (in order) drives 336 * supplied as arguments, default drives. If everything isn't filled 337 * in and there are drives not taken care of, display the first few 338 * that fit. 339 */ 340 #define BACKWARD_COMPATIBILITY 341 for (ndrives = 0; *argv; ++argv) { 342 #ifdef BACKWARD_COMPATIBILITY 343 if (isdigit(**argv)) 344 break; 345 #endif 346 for (i = 0; i < dk_ndrive; i++) { 347 if (strcmp(dr_name[i], *argv)) 348 continue; 349 dr_select[i] = 1; 350 ++ndrives; 351 break; 352 } 353 } 354 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 355 if (dr_select[i]) 356 continue; 357 for (cp = defdrives; *cp; cp++) 358 if (strcmp(dr_name[i], *cp) == 0) { 359 dr_select[i] = 1; 360 ++ndrives; 361 break; 362 } 363 } 364 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 365 if (dr_select[i]) 366 continue; 367 dr_select[i] = 1; 368 ++ndrives; 369 } 370 return(argv); 371 } 372 373 #ifdef __386BSD__ 374 /* 375 * Make up for the fact that under 0.1, VM doesn't update all of the 376 * fields in the statistics structures. 377 */ 378 379 void 380 fill_in_vm_stat(vm_stat) 381 struct vm_statistics *vm_stat; 382 { 383 kread(X_FREE, &vm_stat->free_count, sizeof(vm_stat->free_count)); 384 kread(X_ACTIVE, &vm_stat->active_count, sizeof(vm_stat->active_count)); 385 kread(X_INACTIVE, &vm_stat->inactive_count, 386 sizeof(vm_stat->inactive_count)); 387 kread(X_WIRED, &vm_stat->wire_count, sizeof(vm_stat->wire_count)); 388 kread(X_PAGESIZE, &vm_stat->pagesize, sizeof(vm_stat->pagesize)); 389 } 390 #endif 391 392 long 393 getuptime() 394 { 395 static time_t now, boottime; 396 time_t uptime; 397 398 if (boottime == 0) 399 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 400 (void)time(&now); 401 uptime = now - boottime; 402 if (uptime <= 0 || uptime > 60*60*24*365*10) { 403 (void)fprintf(stderr, 404 "vmstat: time makes no sense; namelist must be wrong.\n"); 405 exit(1); 406 } 407 return(uptime); 408 } 409 410 int hz, hdrcnt; 411 412 void 413 dovmstat(interval, reps) 414 u_int interval; 415 int reps; 416 { 417 struct vmtotal total; 418 time_t uptime, halfuptime; 419 void needhdr(); 420 #ifndef notdef 421 int deficit; 422 #endif 423 424 uptime = getuptime(); 425 halfuptime = uptime / 2; 426 (void)signal(SIGCONT, needhdr); 427 428 if (nl[X_PHZ].n_type != 0 && nl[X_PHZ].n_value != 0) 429 kread(X_PHZ, &hz, sizeof(hz)); 430 if (!hz) 431 kread(X_HZ, &hz, sizeof(hz)); 432 433 for (hdrcnt = 1;;) { 434 if (!--hdrcnt) 435 printhdr(); 436 kread(X_CPTIME, cur.time, sizeof(cur.time)); 437 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer * dk_ndrive)); 438 kread(X_SUM, &sum, sizeof(sum)); 439 kread(X_TOTAL, &total, sizeof(total)); 440 kread(X_VMSTAT, &vm_stat, sizeof(vm_stat)); 441 #ifdef __386BSD__ 442 fill_in_vm_stat (&vm_stat); 443 #endif 444 #ifdef notdef 445 kread(X_DEFICIT, &deficit, sizeof(deficit)); 446 #endif 447 (void)printf("%2d %1d %1d ", 448 total.t_rq, total.t_dw + total.t_pw, total.t_sw); 449 #define pgtok(a) ((a)*NBPG >> 10) 450 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 451 (void)printf("%5ld %5ld ", 452 #ifdef __386BSD__ 453 pgtok(vm_stat.active_count), pgtok(vm_stat.free_count)); 454 #else 455 pgtok(total.t_avm), pgtok(total.t_free)); 456 #endif 457 #ifdef NEWVM 458 (void)printf("%4lu ", rate(vm_stat.faults - ostat.faults)); 459 (void)printf("%3lu ", 460 rate(vm_stat.reactivations - ostat.reactivations)); 461 (void)printf("%3lu ", rate(vm_stat.pageins - ostat.pageins)); 462 (void)printf("%3lu %3lu ", 463 rate(vm_stat.pageouts - ostat.pageouts), 0); 464 #else 465 (void)printf("%3lu %2lu ", 466 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 467 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 468 rate(sum.v_xsfrec + sum.v_xifrec - 469 osum.v_xsfrec - osum.v_xifrec)); 470 (void)printf("%3lu ", 471 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 472 (void)printf("%3lu %3lu ", 473 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 474 rate(pgtok(sum.v_dfree - osum.v_dfree))); 475 (void)printf("%3d ", pgtok(deficit)); 476 #endif 477 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 478 dkstats(); 479 (void)printf("%4lu %4lu %3lu ", 480 rate(sum.v_intr - osum.v_intr), 481 rate(sum.v_syscall - osum.v_syscall), 482 rate(sum.v_swtch - osum.v_swtch)); 483 cpustats(); 484 (void)printf("\n"); 485 (void)fflush(stdout); 486 if (reps >= 0 && --reps <= 0) 487 break; 488 osum = sum; 489 ostat = vm_stat; 490 uptime = interval; 491 /* 492 * We round upward to avoid losing low-frequency events 493 * (i.e., >= 1 per interval but < 1 per second). 494 */ 495 halfuptime = (uptime + 1) / 2; 496 (void)sleep(interval); 497 } 498 } 499 500 printhdr() 501 { 502 register int i; 503 504 (void)printf(" procs memory page%*s", 20, ""); 505 if (ndrives > 1) 506 (void)printf("disks %*s faults cpu\n", 507 ndrives * 3 - 6, ""); 508 else 509 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 510 #ifndef NEWVM 511 (void)printf(" r b w avm fre re at pi po fr de sr "); 512 #else 513 (void)printf(" r b w avm fre flt re pi po fr sr "); 514 #endif 515 for (i = 0; i < dk_ndrive; i++) 516 if (dr_select[i]) 517 (void)printf("%c%c ", dr_name[i][0], 518 dr_name[i][strlen(dr_name[i]) - 1]); 519 (void)printf(" in sy cs us sy id\n"); 520 hdrcnt = winlines - 2; 521 } 522 523 /* 524 * Force a header to be prepended to the next output. 525 */ 526 void 527 needhdr() 528 { 529 530 hdrcnt = 1; 531 } 532 533 #ifdef notdef 534 void 535 dotimes() 536 { 537 u_int pgintime, rectime; 538 539 kread(X_REC, &rectime, sizeof(rectime)); 540 kread(X_PGIN, &pgintime, sizeof(pgintime)); 541 kread(X_SUM, &sum, sizeof(sum)); 542 (void)printf("%u reclaims, %u total time (usec)\n", 543 sum.v_pgrec, rectime); 544 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 545 (void)printf("\n"); 546 (void)printf("%u page ins, %u total time (msec)\n", 547 sum.v_pgin, pgintime / 10); 548 (void)printf("average: %8.1f msec / page in\n", 549 pgintime / (sum.v_pgin * 10.0)); 550 } 551 #endif 552 553 pct(top, bot) 554 long top, bot; 555 { 556 if (bot == 0) 557 return(0); 558 return((top * 100) / bot); 559 } 560 561 #define PCT(top, bot) pct((long)(top), (long)(bot)) 562 563 #if defined(tahoe) 564 #include <machine/cpu.h> 565 #endif 566 567 void 568 dosum() 569 { 570 struct nchstats nchstats; 571 #ifndef NEWVM 572 struct xstats xstats; 573 #endif 574 long nchtotal; 575 #if defined(tahoe) 576 struct keystats keystats; 577 #endif 578 579 kread(X_SUM, &sum, sizeof(sum)); 580 #ifdef NEWVM 581 kread(X_VMSTAT, &vm_stat, sizeof(vm_stat)); 582 #ifdef __386BSD__ 583 fill_in_vm_stat(&vm_stat); 584 #endif 585 #else 586 (void)printf("%9u swap ins\n", sum.v_swpin); 587 (void)printf("%9u swap outs\n", sum.v_swpout); 588 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 589 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 590 (void)printf("%9u total address trans. faults taken\n", sum.v_faults); 591 (void)printf("%9u page ins\n", sum.v_pgin); 592 (void)printf("%9u page outs\n", sum.v_pgout); 593 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 594 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 595 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 596 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 597 PCT(sum.v_fastpgrec, sum.v_pgrec)); 598 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 599 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 600 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 601 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 602 (void)printf("%9u executable fill pages created\n", 603 sum.v_nexfod / CLSIZE); 604 (void)printf("%9u executable fill page faults\n", 605 sum.v_exfod / CLSIZE); 606 (void)printf("%9u swap text pages found in free list\n", 607 sum.v_xsfrec); 608 (void)printf("%9u inode text pages found in free list\n", 609 sum.v_xifrec); 610 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 611 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 612 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 613 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 614 (void)printf("%9u pages freed by the clock daemon\n", 615 sum.v_dfree / CLSIZE); 616 #endif 617 (void)printf("%9u cpu context switches\n", sum.v_swtch); 618 (void)printf("%9u device interrupts\n", sum.v_intr); 619 (void)printf("%9u software interrupts\n", sum.v_soft); 620 #ifdef vax 621 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 622 #endif 623 (void)printf("%9u traps\n", sum.v_trap); 624 (void)printf("%9u system calls\n", sum.v_syscall); 625 #ifdef NEWVM 626 (void)printf("%9u bytes per page\n", vm_stat.pagesize); 627 (void)printf("%9u pages free\n", vm_stat.free_count); 628 (void)printf("%9u pages active\n", vm_stat.active_count); 629 (void)printf("%9u pages inactive\n", vm_stat.inactive_count); 630 (void)printf("%9u pages wired down\n", vm_stat.wire_count); 631 (void)printf("%9u zero-fill pages\n", vm_stat.zero_fill_count); 632 (void)printf("%9u pages reactivated\n", vm_stat.reactivations); 633 (void)printf("%9u pageins\n", vm_stat.pageins); 634 (void)printf("%9u pageouts\n", vm_stat.pageouts); 635 (void)printf("%9u VM faults\n", vm_stat.faults); 636 (void)printf("%9u copy-on-write faults\n", vm_stat.cow_faults); 637 (void)printf("%9u VM object cache lookups\n", vm_stat.lookups); 638 (void)printf("%9u VM object hits\n", vm_stat.hits); 639 #endif 640 641 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 642 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 643 nchstats.ncs_badhits + nchstats.ncs_falsehits + 644 nchstats.ncs_miss + nchstats.ncs_long; 645 (void)printf("%9ld total name lookups\n", nchtotal); 646 (void)printf( 647 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 648 "", PCT(nchstats.ncs_goodhits, nchtotal), 649 PCT(nchstats.ncs_neghits, nchtotal), 650 PCT(nchstats.ncs_pass2, nchtotal)); 651 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 652 PCT(nchstats.ncs_badhits, nchtotal), 653 PCT(nchstats.ncs_falsehits, nchtotal), 654 PCT(nchstats.ncs_long, nchtotal)); 655 #ifndef NEWVM 656 kread(X_XSTATS, &xstats, sizeof(xstats)); 657 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 658 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 659 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 660 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 661 (void)printf("%9lu total calls to xfree", xstats.free); 662 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 663 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 664 #endif 665 #if defined(tahoe) 666 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 667 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 668 keystats.ks_allocs, "code cache keys allocated", 669 PCT(keystats.ks_allocfree, keystats.ks_allocs), 670 PCT(keystats.ks_norefs, keystats.ks_allocs), 671 PCT(keystats.ks_taken, keystats.ks_allocs), 672 PCT(keystats.ks_shared, keystats.ks_allocs)); 673 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 674 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 675 keystats.ks_allocs, "data cache keys allocated", 676 PCT(keystats.ks_allocfree, keystats.ks_allocs), 677 PCT(keystats.ks_norefs, keystats.ks_allocs), 678 PCT(keystats.ks_taken, keystats.ks_allocs), 679 PCT(keystats.ks_shared, keystats.ks_allocs)); 680 #endif 681 } 682 683 #ifdef notdef 684 void 685 doforkst() 686 { 687 struct forkstat fks; 688 689 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 690 (void)printf("%d forks, %d pages, average %.2f\n", 691 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 692 (void)printf("%d vforks, %d pages, average %.2f\n", 693 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 694 } 695 #endif 696 697 void 698 dkstats() 699 { 700 register int dn, state; 701 double etime; 702 long tmp; 703 704 for (dn = 0; dn < dk_ndrive; ++dn) { 705 tmp = cur.xfer[dn]; 706 cur.xfer[dn] -= last.xfer[dn]; 707 last.xfer[dn] = tmp; 708 } 709 etime = 0; 710 for (state = 0; state < CPUSTATES; ++state) { 711 tmp = cur.time[state]; 712 cur.time[state] -= last.time[state]; 713 last.time[state] = tmp; 714 etime += cur.time[state]; 715 } 716 if (etime == 0) 717 etime = 1; 718 etime /= hz; 719 for (dn = 0; dn < dk_ndrive; ++dn) { 720 if (!dr_select[dn]) 721 continue; 722 (void)printf("%2.0f ", cur.xfer[dn] / etime); 723 } 724 } 725 726 void 727 cpustats() 728 { 729 register int state; 730 double pct, total; 731 732 total = 0; 733 for (state = 0; state < CPUSTATES; ++state) 734 total += cur.time[state]; 735 if (total) 736 pct = 100 / total; 737 else 738 pct = 0; 739 (void)printf("%2.0f ", /* user + nice */ 740 (cur.time[0] + cur.time[1]) * pct); 741 (void)printf("%2.0f ", cur.time[2] * pct); /* system */ 742 (void)printf("%2.0f", cur.time[3] * pct); /* idle */ 743 } 744 745 void 746 dointr() 747 { 748 register long *intrcnt, inttotal, uptime; 749 register int nintr, inamlen; 750 register char *intrname; 751 752 uptime = getuptime(); 753 nintr = nl[X_EINTRCNT].n_value - nl[X_INTRCNT].n_value; 754 inamlen = nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value; 755 intrcnt = malloc((size_t)nintr); 756 intrname = malloc((size_t)inamlen); 757 if (intrcnt == NULL || intrname == NULL) { 758 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 759 exit(1); 760 } 761 kread(X_INTRCNT, intrcnt, (size_t)nintr); 762 kread(X_INTRNAMES, intrname, (size_t)inamlen); 763 (void)printf("interrupt total rate\n"); 764 inttotal = 0; 765 nintr /= sizeof(long); 766 while (--nintr >= 0) { 767 if (*intrcnt) 768 (void)printf("%-12s %8ld %8ld\n", intrname, 769 *intrcnt, *intrcnt / uptime); 770 intrname += strlen(intrname) + 1; 771 inttotal += *intrcnt++; 772 } 773 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 774 } 775 776 /* 777 * These names are defined in <sys/malloc.h>. 778 */ 779 char *kmemnames[] = INITKMEMNAMES; 780 781 void 782 domem() 783 { 784 register struct kmembuckets *kp; 785 register struct kmemstats *ks; 786 register int i; 787 int size; 788 long totuse = 0, totfree = 0, totreq = 0; 789 struct kmemstats kmemstats[M_LAST]; 790 struct kmembuckets buckets[MINBUCKET + 16]; 791 792 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 793 (void)printf("Memory statistics by bucket size\n"); 794 (void)printf( 795 " Size In Use Free Requests HighWater Couldfree\n"); 796 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 797 if (kp->kb_calls == 0) 798 continue; 799 size = 1 << i; 800 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 801 kp->kb_total - kp->kb_totalfree, 802 kp->kb_totalfree, kp->kb_calls, 803 kp->kb_highwat, kp->kb_couldfree); 804 totfree += size * kp->kb_totalfree; 805 } 806 807 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 808 (void)printf("\nMemory statistics by type\n"); 809 (void)printf( 810 " Type In Use MemUse HighUse Limit Requests TypeLimit KernLimit\n"); 811 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 812 if (ks->ks_calls == 0) 813 continue; 814 (void)printf("%10s %6ld %7ldK %8ldK %5ldK %8ld %6u %9u\n", 815 kmemnames[i] ? kmemnames[i] : "undefined", 816 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 817 (ks->ks_maxused + 1023) / 1024, 818 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 819 ks->ks_limblocks, ks->ks_mapblocks); 820 totuse += ks->ks_memuse; 821 totreq += ks->ks_calls; 822 } 823 (void)printf("\nMemory Totals: In Use Free Requests\n"); 824 (void)printf(" %7ldK %6ldK %8ld\n", 825 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 826 } 827 828 /* 829 * kread reads something from the kernel, given its nlist index. 830 */ 831 void 832 kread(nlx, addr, size) 833 int nlx; 834 void *addr; 835 size_t size; 836 { 837 char *sym; 838 839 if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) { 840 sym = nl[nlx].n_name; 841 if (*sym == '_') 842 ++sym; 843 (void)fprintf(stderr, 844 "vmstat: %s: symbol %s not defined\n", vmunix, sym); 845 exit(1); 846 } 847 if (kvm_read((void *)nl[nlx].n_value, addr, size) != size) { 848 sym = nl[nlx].n_name; 849 if (*sym == '_') 850 ++sym; 851 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr()); 852 exit(1); 853 } 854 } 855 856 void 857 usage() 858 { 859 (void)fprintf(stderr, 860 #ifndef NEWVM 861 "usage: vmstat [-fimst] [-c count] [-M core] \ 862 [-N system] [-w wait] [disks]\n"); 863 #else 864 "usage: vmstat [-ims] [-c count] [-M core] \ 865 [-N system] [-w wait] [disks]\n"); 866 #endif 867 exit(1); 868 } 869
Indexes created Tue Sep 23 07:09:52 GMT 2025