1 /* 2 * Copyright (c) 1980, 1986, 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1980, 1986, 1991 The Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)vmstat.c 5.34 (Berkeley) 06/23/92"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/time.h> 20 #include <sys/proc.h> 21 #include <sys/user.h> 22 #include <sys/dkstat.h> 23 #include <sys/buf.h> 24 #include <sys/namei.h> 25 #include <sys/malloc.h> 26 #include <sys/signal.h> 27 #include <sys/fcntl.h> 28 #include <sys/ioctl.h> 29 #include <sys/kinfo.h> 30 #include <vm/vm.h> 31 #include <time.h> 32 #include <nlist.h> 33 #include <kvm.h> 34 #include <errno.h> 35 #include <unistd.h> 36 #include <stdio.h> 37 #include <ctype.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <paths.h> 41 #include <limits.h> 42 43 #define NEWVM /* XXX till old has been updated or purged */ 44 struct nlist nl[] = { 45 #define X_CPTIME 0 46 { "_cp_time" }, 47 #define X_DK_NDRIVE 1 48 { "_dk_ndrive" }, 49 #define X_SUM 2 50 { "_cnt" }, 51 #define X_BOOTTIME 3 52 { "_boottime" }, 53 #define X_DKXFER 4 54 { "_dk_xfer" }, 55 #define X_HZ 5 56 { "_hz" }, 57 #define X_STATHZ 6 58 { "_stathz" }, 59 #define X_NCHSTATS 7 60 { "_nchstats" }, 61 #define X_INTRNAMES 8 62 { "_intrnames" }, 63 #define X_EINTRNAMES 9 64 { "_eintrnames" }, 65 #define X_INTRCNT 10 66 { "_intrcnt" }, 67 #define X_EINTRCNT 11 68 { "_eintrcnt" }, 69 #define X_KMEMSTAT 12 70 { "_kmemstats" }, 71 #define X_KMEMBUCKETS 13 72 { "_bucket" }, 73 #ifdef notdef 74 #define X_DEFICIT 14 75 { "_deficit" }, 76 #define X_FORKSTAT 15 77 { "_forkstat" }, 78 #define X_REC 16 79 { "_rectime" }, 80 #define X_PGIN 17 81 { "_pgintime" }, 82 #define X_XSTATS 18 83 { "_xstats" }, 84 #define X_END 18 85 #else 86 #define X_END 14 87 #endif 88 #ifdef hp300 89 #define X_HPDINIT (X_END) 90 { "_hp_dinit" }, 91 #endif 92 #ifdef tahoe 93 #define X_VBDINIT (X_END) 94 { "_vbdinit" }, 95 #define X_CKEYSTATS (X_END+1) 96 { "_ckeystats" }, 97 #define X_DKEYSTATS (X_END+2) 98 { "_dkeystats" }, 99 #endif 100 #ifdef vax 101 #define X_MBDINIT (X_END) 102 { "_mbdinit" }, 103 #define X_UBDINIT (X_END+1) 104 { "_ubdinit" }, 105 #endif 106 { "" }, 107 }; 108 109 struct _disk { 110 long time[CPUSTATES]; 111 long *xfer; 112 } cur, last; 113 114 struct vmmeter sum, osum; 115 char **dr_name; 116 int *dr_select, dk_ndrive, ndrives; 117 118 int winlines = 20; 119 120 kvm_t *kd; 121 122 #define FORKSTAT 0x01 123 #define INTRSTAT 0x02 124 #define MEMSTAT 0x04 125 #define SUMSTAT 0x08 126 #define TIMESTAT 0x10 127 #define VMSTAT 0x20 128 129 #include "names.c" /* disk names -- machine dependent */ 130 131 void cpustats(), dkstats(), dointr(), domem(), dosum(); 132 void dovmstat(), kread(), usage(); 133 #ifdef notdef 134 void dotimes(), doforkst(); 135 #endif 136 137 main(argc, argv) 138 register int argc; 139 register char **argv; 140 { 141 extern int optind; 142 extern char *optarg; 143 register int c, todo; 144 u_int interval; 145 int reps; 146 char *memf, *nlistf; 147 char errbuf[_POSIX2_LINE_MAX]; 148 149 memf = nlistf = NULL; 150 interval = reps = todo = 0; 151 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 152 switch (c) { 153 case 'c': 154 reps = atoi(optarg); 155 break; 156 #ifndef notdef 157 case 'f': 158 todo |= FORKSTAT; 159 break; 160 #endif 161 case 'i': 162 todo |= INTRSTAT; 163 break; 164 case 'M': 165 memf = optarg; 166 break; 167 case 'm': 168 todo |= MEMSTAT; 169 break; 170 case 'N': 171 nlistf = optarg; 172 break; 173 case 's': 174 todo |= SUMSTAT; 175 break; 176 #ifndef notdef 177 case 't': 178 todo |= TIMESTAT; 179 break; 180 #endif 181 case 'w': 182 interval = atoi(optarg); 183 break; 184 case '?': 185 default: 186 usage(); 187 } 188 } 189 argc -= optind; 190 argv += optind; 191 192 if (todo == 0) 193 todo = VMSTAT; 194 195 /* 196 * Discard setgid privileges if not the running kernel so that bad 197 * guys can't print interesting stuff from kernel memory. 198 */ 199 if (nlistf != NULL || memf != NULL) 200 setgid(getgid()); 201 202 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 203 if (kd == 0) { 204 (void)fprintf(stderr, 205 "vmstat: kvm_openfiles: %s\n", errbuf); 206 exit(1); 207 } 208 209 if ((c = kvm_nlist(kd, nl)) != 0) { 210 if (c > 0) { 211 (void)fprintf(stderr, 212 "vmstat: undefined symbols: "); 213 for (c = 0; c < sizeof(nl)/sizeof(nl[0]); c++) 214 if (nl[c].n_type == 0) 215 printf(" %s", nl[c].n_name); 216 (void)fputc('\n', stderr); 217 } else 218 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 219 kvm_geterr(kd)); 220 exit(1); 221 } 222 223 if (todo & VMSTAT) { 224 char **getdrivedata(); 225 struct winsize winsize; 226 227 argv = getdrivedata(argv); 228 winsize.ws_row = 0; 229 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 230 if (winsize.ws_row > 0) 231 winlines = winsize.ws_row; 232 233 } 234 235 #define BACKWARD_COMPATIBILITY 236 #ifdef BACKWARD_COMPATIBILITY 237 if (*argv) { 238 interval = atoi(*argv); 239 if (*++argv) 240 reps = atoi(*argv); 241 } 242 #endif 243 244 if (interval) { 245 if (!reps) 246 reps = -1; 247 } else if (reps) 248 interval = 1; 249 250 #ifdef notdef 251 if (todo & FORKSTAT) 252 doforkst(); 253 #endif 254 if (todo & MEMSTAT) 255 domem(); 256 if (todo & SUMSTAT) 257 dosum(); 258 #ifdef notdef 259 if (todo & TIMESTAT) 260 dotimes(); 261 #endif 262 if (todo & INTRSTAT) 263 dointr(); 264 if (todo & VMSTAT) 265 dovmstat(interval, reps); 266 exit(0); 267 } 268 269 char ** 270 getdrivedata(argv) 271 char **argv; 272 { 273 register int i; 274 register char **cp; 275 char buf[30]; 276 277 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 278 if (dk_ndrive <= 0) { 279 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 280 exit(1); 281 } 282 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 283 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 284 for (i = 0; i < dk_ndrive; i++) 285 dr_name[i] = NULL; 286 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 287 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 288 read_names(); 289 for (i = 0; i < dk_ndrive; i++) 290 if (dr_name[i] == NULL) { 291 (void)sprintf(buf, "??%d", i); 292 dr_name[i] = strdup(buf); 293 } 294 295 /* 296 * Choose drives to be displayed. Priority goes to (in order) drives 297 * supplied as arguments, default drives. If everything isn't filled 298 * in and there are drives not taken care of, display the first few 299 * that fit. 300 */ 301 #define BACKWARD_COMPATIBILITY 302 for (ndrives = 0; *argv; ++argv) { 303 #ifdef BACKWARD_COMPATIBILITY 304 if (isdigit(**argv)) 305 break; 306 #endif 307 for (i = 0; i < dk_ndrive; i++) { 308 if (strcmp(dr_name[i], *argv)) 309 continue; 310 dr_select[i] = 1; 311 ++ndrives; 312 break; 313 } 314 } 315 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 316 if (dr_select[i]) 317 continue; 318 for (cp = defdrives; *cp; cp++) 319 if (strcmp(dr_name[i], *cp) == 0) { 320 dr_select[i] = 1; 321 ++ndrives; 322 break; 323 } 324 } 325 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 326 if (dr_select[i]) 327 continue; 328 dr_select[i] = 1; 329 ++ndrives; 330 } 331 return(argv); 332 } 333 334 long 335 getuptime() 336 { 337 static time_t now, boottime; 338 time_t uptime; 339 340 if (boottime == 0) 341 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 342 (void)time(&now); 343 uptime = now - boottime; 344 if (uptime <= 0 || uptime > 60*60*24*365*10) { 345 (void)fprintf(stderr, 346 "vmstat: time makes no sense; namelist must be wrong.\n"); 347 exit(1); 348 } 349 return(uptime); 350 } 351 352 int hz, hdrcnt; 353 354 void 355 dovmstat(interval, reps) 356 u_int interval; 357 int reps; 358 { 359 struct vmtotal total; 360 time_t uptime, halfuptime; 361 void needhdr(); 362 int size; 363 364 uptime = getuptime(); 365 halfuptime = uptime / 2; 366 (void)signal(SIGCONT, needhdr); 367 368 if (nl[X_STATHZ].n_type != 0 && nl[X_STATHZ].n_value != 0) 369 kread(X_STATHZ, &hz, sizeof(hz)); 370 if (!hz) 371 kread(X_HZ, &hz, sizeof(hz)); 372 373 for (hdrcnt = 1;;) { 374 if (!--hdrcnt) 375 printhdr(); 376 kread(X_CPTIME, cur.time, sizeof(cur.time)); 377 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer * dk_ndrive)); 378 kread(X_SUM, &sum, sizeof(sum)); 379 size = sizeof(total); 380 if (getkerninfo(KINFO_METER, &total, &size, 0) < 0) { 381 printf("Can't get kerninfo: %s\n", strerror(errno)); 382 bzero(&total, sizeof(total)); 383 } 384 (void)printf("%2d%2d%2d", 385 total.t_rq, total.t_dw + total.t_pw, total.t_sw); 386 #define pgtok(a) ((a) * sum.v_page_size >> 10) 387 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 388 (void)printf("%6ld%6ld ", 389 pgtok(total.t_avm), pgtok(total.t_free)); 390 #ifdef NEWVM 391 (void)printf("%4lu ", rate(sum.v_faults - osum.v_faults)); 392 (void)printf("%3lu ", 393 rate(sum.v_reactivated - osum.v_reactivated)); 394 (void)printf("%3lu ", rate(sum.v_pageins - osum.v_pageins)); 395 (void)printf("%3lu %3lu ", 396 rate(sum.v_pageouts - osum.v_pageouts), 0); 397 #else 398 (void)printf("%3lu %2lu ", 399 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 400 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 401 rate(sum.v_xsfrec + sum.v_xifrec - 402 osum.v_xsfrec - osum.v_xifrec)); 403 (void)printf("%3lu ", 404 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 405 (void)printf("%3lu %3lu ", 406 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 407 rate(pgtok(sum.v_dfree - osum.v_dfree))); 408 (void)printf("%3d ", pgtok(deficit)); 409 #endif 410 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 411 dkstats(); 412 (void)printf("%4lu %4lu %3lu ", 413 rate(sum.v_intr - osum.v_intr), 414 rate(sum.v_syscall - osum.v_syscall), 415 rate(sum.v_swtch - osum.v_swtch)); 416 cpustats(); 417 (void)printf("\n"); 418 (void)fflush(stdout); 419 if (reps >= 0 && --reps <= 0) 420 break; 421 osum = sum; 422 uptime = interval; 423 /* 424 * We round upward to avoid losing low-frequency events 425 * (i.e., >= 1 per interval but < 1 per second). 426 */ 427 halfuptime = (uptime + 1) / 2; 428 (void)sleep(interval); 429 } 430 } 431 432 printhdr() 433 { 434 register int i; 435 436 (void)printf(" procs memory page%*s", 20, ""); 437 if (ndrives > 1) 438 (void)printf("disks %*s faults cpu\n", 439 ndrives * 3 - 6, ""); 440 else 441 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 442 #ifndef NEWVM 443 (void)printf(" r b w avm fre re at pi po fr de sr "); 444 #else 445 (void)printf(" r b w avm fre flt re pi po fr sr "); 446 #endif 447 for (i = 0; i < dk_ndrive; i++) 448 if (dr_select[i]) 449 (void)printf("%c%c ", dr_name[i][0], 450 dr_name[i][strlen(dr_name[i]) - 1]); 451 (void)printf(" in sy cs us sy id\n"); 452 hdrcnt = winlines - 2; 453 } 454 455 /* 456 * Force a header to be prepended to the next output. 457 */ 458 void 459 needhdr() 460 { 461 462 hdrcnt = 1; 463 } 464 465 #ifdef notdef 466 void 467 dotimes() 468 { 469 u_int pgintime, rectime; 470 471 kread(X_REC, &rectime, sizeof(rectime)); 472 kread(X_PGIN, &pgintime, sizeof(pgintime)); 473 kread(X_SUM, &sum, sizeof(sum)); 474 (void)printf("%u reclaims, %u total time (usec)\n", 475 sum.v_pgrec, rectime); 476 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 477 (void)printf("\n"); 478 (void)printf("%u page ins, %u total time (msec)\n", 479 sum.v_pgin, pgintime / 10); 480 (void)printf("average: %8.1f msec / page in\n", 481 pgintime / (sum.v_pgin * 10.0)); 482 } 483 #endif 484 485 pct(top, bot) 486 long top, bot; 487 { 488 if (bot == 0) 489 return(0); 490 return((top * 100) / bot); 491 } 492 493 #define PCT(top, bot) pct((long)(top), (long)(bot)) 494 495 #if defined(tahoe) 496 #include <machine/cpu.h> 497 #endif 498 499 void 500 dosum() 501 { 502 struct nchstats nchstats; 503 #ifndef NEWVM 504 struct xstats xstats; 505 #endif 506 long nchtotal; 507 #if defined(tahoe) 508 struct keystats keystats; 509 #endif 510 511 kread(X_SUM, &sum, sizeof(sum)); 512 (void)printf("%9u cpu context switches\n", sum.v_swtch); 513 (void)printf("%9u device interrupts\n", sum.v_intr); 514 (void)printf("%9u software interrupts\n", sum.v_soft); 515 #ifdef vax 516 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 517 #endif 518 (void)printf("%9u traps\n", sum.v_trap); 519 (void)printf("%9u system calls\n", sum.v_syscall); 520 (void)printf("%9u total faults taken\n", sum.v_faults); 521 (void)printf("%9u swap ins\n", sum.v_swpin); 522 (void)printf("%9u swap outs\n", sum.v_swpout); 523 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 524 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 525 (void)printf("%9u page ins\n", sum.v_pageins); 526 (void)printf("%9u page outs\n", sum.v_pageouts); 527 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 528 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 529 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 530 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 531 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 532 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 533 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 534 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 535 #ifdef NEWVM 536 (void)printf("%9u VM object cache lookups\n", sum.v_lookups); 537 (void)printf("%9u VM object hits\n", sum.v_hits); 538 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 539 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 540 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 541 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 542 (void)printf("%9u pages free\n", sum.v_free_count); 543 (void)printf("%9u pages wired down\n", sum.v_wire_count); 544 (void)printf("%9u pages active\n", sum.v_active_count); 545 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 546 (void)printf("%9u bytes per page\n", sum.v_page_size); 547 #else 548 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 549 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 550 PCT(sum.v_fastpgrec, sum.v_pgrec)); 551 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 552 (void)printf("%9u executable fill pages created\n", 553 sum.v_nexfod / CLSIZE); 554 (void)printf("%9u executable fill page faults\n", 555 sum.v_exfod / CLSIZE); 556 (void)printf("%9u swap text pages found in free list\n", 557 sum.v_xsfrec); 558 (void)printf("%9u inode text pages found in free list\n", 559 sum.v_xifrec); 560 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 561 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 562 (void)printf("%9u pages freed by the clock daemon\n", 563 sum.v_dfree / CLSIZE); 564 #endif 565 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 566 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 567 nchstats.ncs_badhits + nchstats.ncs_falsehits + 568 nchstats.ncs_miss + nchstats.ncs_long; 569 (void)printf("%9ld total name lookups\n", nchtotal); 570 (void)printf( 571 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 572 "", PCT(nchstats.ncs_goodhits, nchtotal), 573 PCT(nchstats.ncs_neghits, nchtotal), 574 PCT(nchstats.ncs_pass2, nchtotal)); 575 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 576 PCT(nchstats.ncs_badhits, nchtotal), 577 PCT(nchstats.ncs_falsehits, nchtotal), 578 PCT(nchstats.ncs_long, nchtotal)); 579 #ifndef NEWVM 580 kread(X_XSTATS, &xstats, sizeof(xstats)); 581 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 582 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 583 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 584 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 585 (void)printf("%9lu total calls to xfree", xstats.free); 586 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 587 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 588 #endif 589 #if defined(tahoe) 590 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 591 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 592 keystats.ks_allocs, "code cache keys allocated", 593 PCT(keystats.ks_allocfree, keystats.ks_allocs), 594 PCT(keystats.ks_norefs, keystats.ks_allocs), 595 PCT(keystats.ks_taken, keystats.ks_allocs), 596 PCT(keystats.ks_shared, keystats.ks_allocs)); 597 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 598 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 599 keystats.ks_allocs, "data cache keys allocated", 600 PCT(keystats.ks_allocfree, keystats.ks_allocs), 601 PCT(keystats.ks_norefs, keystats.ks_allocs), 602 PCT(keystats.ks_taken, keystats.ks_allocs), 603 PCT(keystats.ks_shared, keystats.ks_allocs)); 604 #endif 605 } 606 607 #ifdef notdef 608 void 609 doforkst() 610 { 611 struct forkstat fks; 612 613 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 614 (void)printf("%d forks, %d pages, average %.2f\n", 615 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 616 (void)printf("%d vforks, %d pages, average %.2f\n", 617 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 618 } 619 #endif 620 621 void 622 dkstats() 623 { 624 register int dn, state; 625 double etime; 626 long tmp; 627 628 for (dn = 0; dn < dk_ndrive; ++dn) { 629 tmp = cur.xfer[dn]; 630 cur.xfer[dn] -= last.xfer[dn]; 631 last.xfer[dn] = tmp; 632 } 633 etime = 0; 634 for (state = 0; state < CPUSTATES; ++state) { 635 tmp = cur.time[state]; 636 cur.time[state] -= last.time[state]; 637 last.time[state] = tmp; 638 etime += cur.time[state]; 639 } 640 if (etime == 0) 641 etime = 1; 642 etime /= hz; 643 for (dn = 0; dn < dk_ndrive; ++dn) { 644 if (!dr_select[dn]) 645 continue; 646 (void)printf("%2.0f ", cur.xfer[dn] / etime); 647 } 648 } 649 650 void 651 cpustats() 652 { 653 register int state; 654 double pct, total; 655 656 total = 0; 657 for (state = 0; state < CPUSTATES; ++state) 658 total += cur.time[state]; 659 if (total) 660 pct = 100 / total; 661 else 662 pct = 0; 663 (void)printf("%2.0f ", /* user + nice */ 664 (cur.time[0] + cur.time[1]) * pct); 665 (void)printf("%2.0f ", cur.time[2] * pct); /* system */ 666 (void)printf("%2.0f", cur.time[3] * pct); /* idle */ 667 } 668 669 void 670 dointr() 671 { 672 register long *intrcnt, inttotal, uptime; 673 register int nintr, inamlen; 674 register char *intrname; 675 676 uptime = getuptime(); 677 nintr = nl[X_EINTRCNT].n_value - nl[X_INTRCNT].n_value; 678 inamlen = nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value; 679 intrcnt = malloc((size_t)nintr); 680 intrname = malloc((size_t)inamlen); 681 if (intrcnt == NULL || intrname == NULL) { 682 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 683 exit(1); 684 } 685 kread(X_INTRCNT, intrcnt, (size_t)nintr); 686 kread(X_INTRNAMES, intrname, (size_t)inamlen); 687 (void)printf("interrupt total rate\n"); 688 inttotal = 0; 689 nintr /= sizeof(long); 690 while (--nintr >= 0) { 691 if (*intrcnt) 692 (void)printf("%-12s %8ld %8ld\n", intrname, 693 *intrcnt, *intrcnt / uptime); 694 intrname += strlen(intrname) + 1; 695 inttotal += *intrcnt++; 696 } 697 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 698 } 699 700 /* 701 * These names are defined in <sys/malloc.h>. 702 */ 703 char *kmemnames[] = INITKMEMNAMES; 704 705 void 706 domem() 707 { 708 register struct kmembuckets *kp; 709 register struct kmemstats *ks; 710 register int i; 711 int size; 712 long totuse = 0, totfree = 0, totreq = 0; 713 struct kmemstats kmemstats[M_LAST]; 714 struct kmembuckets buckets[MINBUCKET + 16]; 715 716 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 717 (void)printf("Memory statistics by bucket size\n"); 718 (void)printf( 719 " Size In Use Free Requests HighWater Couldfree\n"); 720 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 721 if (kp->kb_calls == 0) 722 continue; 723 size = 1 << i; 724 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 725 kp->kb_total - kp->kb_totalfree, 726 kp->kb_totalfree, kp->kb_calls, 727 kp->kb_highwat, kp->kb_couldfree); 728 totfree += size * kp->kb_totalfree; 729 } 730 731 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 732 (void)printf("\nMemory statistics by type\n"); 733 (void)printf( 734 " Type In Use MemUse HighUse Limit Requests TypeLimit KernLimit\n"); 735 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 736 if (ks->ks_calls == 0) 737 continue; 738 (void)printf("%10s %6ld %7ldK %8ldK %5ldK %8ld %6u %9u\n", 739 kmemnames[i] ? kmemnames[i] : "undefined", 740 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 741 (ks->ks_maxused + 1023) / 1024, 742 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 743 ks->ks_limblocks, ks->ks_mapblocks); 744 totuse += ks->ks_memuse; 745 totreq += ks->ks_calls; 746 } 747 (void)printf("\nMemory Totals: In Use Free Requests\n"); 748 (void)printf(" %7ldK %6ldK %8ld\n", 749 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 750 } 751 752 /* 753 * kread reads something from the kernel, given its nlist index. 754 */ 755 void 756 kread(nlx, addr, size) 757 int nlx; 758 void *addr; 759 size_t size; 760 { 761 char *sym; 762 763 if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) { 764 sym = nl[nlx].n_name; 765 if (*sym == '_') 766 ++sym; 767 (void)fprintf(stderr, 768 "vmstat: symbol %s not defined\n", sym); 769 exit(1); 770 } 771 if (kvm_read(kd, nl[nlx].n_value, addr, size) != size) { 772 sym = nl[nlx].n_name; 773 if (*sym == '_') 774 ++sym; 775 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 776 exit(1); 777 } 778 } 779 780 void 781 usage() 782 { 783 (void)fprintf(stderr, 784 #ifndef NEWVM 785 "usage: vmstat [-fimst] [-c count] [-M core] \ 786 [-N system] [-w wait] [disks]\n"); 787 #else 788 "usage: vmstat [-ims] [-c count] [-M core] \ 789 [-N system] [-w wait] [disks]\n"); 790 #endif 791 exit(1); 792 } 793