1 /* 2 * Copyright (c) 1980, 1986, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/proc.h> 47 #include <sys/dkstat.h> 48 #include <sys/buf.h> 49 #include <sys/uio.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/sysctl.h> 56 #include <sys/vmmeter.h> 57 58 #include <vm/vm_param.h> 59 60 #include <time.h> 61 #include <nlist.h> 62 #include <kvm.h> 63 #include <errno.h> 64 #include <unistd.h> 65 #include <stdio.h> 66 #include <ctype.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <paths.h> 70 #include <limits.h> 71 72 struct nlist namelist[] = { 73 #define X_CPTIME 0 74 { "_cp_time" }, 75 #define X_DK_NDRIVE 1 76 { "_dk_ndrive" }, 77 #define X_SUM 2 78 { "_cnt" }, 79 #define X_BOOTTIME 3 80 { "_boottime" }, 81 #define X_DKXFER 4 82 { "_dk_xfer" }, 83 #define X_HZ 5 84 { "_hz" }, 85 #define X_STATHZ 6 86 { "_stathz" }, 87 #define X_NCHSTATS 7 88 { "_nchstats" }, 89 #define X_INTRNAMES 8 90 { "_intrnames" }, 91 #define X_EINTRNAMES 9 92 { "_eintrnames" }, 93 #define X_INTRCNT 10 94 { "_intrcnt" }, 95 #define X_EINTRCNT 11 96 { "_eintrcnt" }, 97 #define X_KMEMSTAT 12 98 { "_kmemstats" }, 99 #define X_KMEMBUCKETS 13 100 { "_bucket" }, 101 #ifdef notdef 102 #define X_DEFICIT 14 103 { "_deficit" }, 104 #define X_FORKSTAT 15 105 { "_forkstat" }, 106 #define X_REC 16 107 { "_rectime" }, 108 #define X_PGIN 17 109 { "_pgintime" }, 110 #define X_XSTATS 18 111 { "_xstats" }, 112 #define X_END 19 113 #else 114 #define X_END 14 115 #endif 116 #if defined(hp300) || defined(luna68k) 117 #define X_HPDINIT (X_END) 118 { "_hp_dinit" }, 119 #endif 120 #if defined(i386) 121 #define X_DK_NAMES (X_END) 122 { "_dk_names" }, 123 #endif 124 #ifdef mips 125 #define X_SCSI_DINIT (X_END) 126 { "_scsi_dinit" }, 127 #endif 128 #ifdef tahoe 129 #define X_VBDINIT (X_END) 130 { "_vbdinit" }, 131 #define X_CKEYSTATS (X_END+1) 132 { "_ckeystats" }, 133 #define X_DKEYSTATS (X_END+2) 134 { "_dkeystats" }, 135 #endif 136 #ifdef vax 137 #define X_MBDINIT (X_END) 138 { "_mbdinit" }, 139 #define X_UBDINIT (X_END+1) 140 { "_ubdinit" }, 141 #endif 142 { "" }, 143 }; 144 145 struct _disk { 146 long time[CPUSTATES]; 147 long *xfer; 148 } cur, last; 149 150 struct vmmeter sum, osum; 151 char **dr_name; 152 int *dr_select, dk_ndrive, ndrives; 153 154 int winlines = 20; 155 156 kvm_t *kd; 157 158 #define FORKSTAT 0x01 159 #define INTRSTAT 0x02 160 #define MEMSTAT 0x04 161 #define SUMSTAT 0x08 162 #define TIMESTAT 0x10 163 #define VMSTAT 0x20 164 165 #include "names.c" /* disk names -- machine dependent */ 166 167 void cpustats(), dkstats(), dointr(), domem(), dosum(); 168 void dovmstat(), kread(), usage(); 169 #ifdef notdef 170 void dotimes(), doforkst(); 171 #endif 172 173 main(argc, argv) 174 register int argc; 175 register char **argv; 176 { 177 extern int optind; 178 extern char *optarg; 179 register int c, todo; 180 u_int interval; 181 int reps; 182 char *memf, *nlistf; 183 char errbuf[_POSIX2_LINE_MAX]; 184 185 memf = nlistf = NULL; 186 interval = reps = todo = 0; 187 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 188 switch (c) { 189 case 'c': 190 reps = atoi(optarg); 191 break; 192 #ifndef notdef 193 case 'f': 194 todo |= FORKSTAT; 195 break; 196 #endif 197 case 'i': 198 todo |= INTRSTAT; 199 break; 200 case 'M': 201 memf = optarg; 202 break; 203 case 'm': 204 todo |= MEMSTAT; 205 break; 206 case 'N': 207 nlistf = optarg; 208 break; 209 case 's': 210 todo |= SUMSTAT; 211 break; 212 #ifndef notdef 213 case 't': 214 todo |= TIMESTAT; 215 break; 216 #endif 217 case 'w': 218 interval = atoi(optarg); 219 break; 220 case '?': 221 default: 222 usage(); 223 } 224 } 225 argc -= optind; 226 argv += optind; 227 228 if (todo == 0) 229 todo = VMSTAT; 230 231 /* 232 * Discard setgid privileges if not the running kernel so that bad 233 * guys can't print interesting stuff from kernel memory. 234 */ 235 if (nlistf != NULL || memf != NULL) 236 setgid(getgid()); 237 238 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 239 if (kd == 0) { 240 (void)fprintf(stderr, 241 "vmstat: kvm_openfiles: %s\n", errbuf); 242 exit(1); 243 } 244 245 if ((c = kvm_nlist(kd, namelist)) != 0) { 246 if (c > 0) { 247 (void)fprintf(stderr, 248 "vmstat: undefined symbols:"); 249 for (c = 0; 250 c < sizeof(namelist)/sizeof(namelist[0]); c++) 251 if (namelist[c].n_type == 0) 252 fprintf(stderr, " %s", 253 namelist[c].n_name); 254 (void)fputc('\n', stderr); 255 } else 256 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 257 kvm_geterr(kd)); 258 exit(1); 259 } 260 261 if (todo & VMSTAT) { 262 char **getdrivedata(); 263 struct winsize winsize; 264 265 argv = getdrivedata(argv); 266 winsize.ws_row = 0; 267 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 268 if (winsize.ws_row > 0) 269 winlines = winsize.ws_row; 270 271 } 272 273 #define BACKWARD_COMPATIBILITY 274 #ifdef BACKWARD_COMPATIBILITY 275 if (*argv) { 276 interval = atoi(*argv); 277 if (*++argv) 278 reps = atoi(*argv); 279 } 280 #endif 281 282 if (interval) { 283 if (!reps) 284 reps = -1; 285 } else if (reps) 286 interval = 1; 287 288 #ifdef notdef 289 if (todo & FORKSTAT) 290 doforkst(); 291 #endif 292 if (todo & MEMSTAT) 293 domem(); 294 if (todo & SUMSTAT) 295 dosum(); 296 #ifdef notdef 297 if (todo & TIMESTAT) 298 dotimes(); 299 #endif 300 if (todo & INTRSTAT) 301 dointr(); 302 if (todo & VMSTAT) 303 dovmstat(interval, reps); 304 exit(0); 305 } 306 307 char ** 308 getdrivedata(argv) 309 char **argv; 310 { 311 register int i; 312 register char **cp; 313 char buf[30]; 314 315 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 316 if (dk_ndrive < 0) { 317 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 318 exit(1); 319 } 320 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 321 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 322 for (i = 0; i < dk_ndrive; i++) 323 dr_name[i] = NULL; 324 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 325 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 326 if (!read_names()) 327 exit (1); 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 long 374 getuptime() 375 { 376 static time_t now, boottime; 377 time_t uptime; 378 379 if (boottime == 0) 380 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 381 (void)time(&now); 382 uptime = now - boottime; 383 if (uptime <= 0 || uptime > 60*60*24*365*10) { 384 (void)fprintf(stderr, 385 "vmstat: time makes no sense; namelist must be wrong.\n"); 386 exit(1); 387 } 388 return(uptime); 389 } 390 391 int hz, hdrcnt; 392 393 void 394 dovmstat(interval, reps) 395 u_int interval; 396 int reps; 397 { 398 struct vmtotal total; 399 time_t uptime, halfuptime; 400 void needhdr(); 401 int mib[2], size; 402 403 uptime = getuptime(); 404 halfuptime = uptime / 2; 405 (void)signal(SIGCONT, needhdr); 406 407 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 408 kread(X_STATHZ, &hz, sizeof(hz)); 409 if (!hz) 410 kread(X_HZ, &hz, sizeof(hz)); 411 412 for (hdrcnt = 1;;) { 413 if (!--hdrcnt) 414 printhdr(); 415 kread(X_CPTIME, cur.time, sizeof(cur.time)); 416 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive); 417 kread(X_SUM, &sum, sizeof(sum)); 418 size = sizeof(total); 419 mib[0] = CTL_VM; 420 mib[1] = VM_METER; 421 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 422 printf("Can't get kerninfo: %s\n", strerror(errno)); 423 bzero(&total, sizeof(total)); 424 } 425 (void)printf("%2d%2d%2d", 426 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 427 #define pgtok(a) ((a) * sum.v_page_size >> 10) 428 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 429 (void)printf("%6ld%6ld ", 430 pgtok(total.t_avm), pgtok(total.t_free)); 431 (void)printf("%4lu ", rate(sum.v_vm_faults - osum.v_vm_faults)); 432 (void)printf("%3lu ", 433 rate(sum.v_reactivated - osum.v_reactivated)); 434 (void)printf("%3lu ", rate(sum.v_swapin + sum.v_vnodein - 435 (osum.v_swapin + osum.v_vnodein))); 436 (void)printf("%3lu ", rate(sum.v_swapout + sum.v_vnodeout - 437 (osum.v_swapout + osum.v_vnodeout))); 438 (void)printf("%3lu ", rate(sum.v_tfree - osum.v_tfree)); 439 (void)printf("%3lu ", rate(sum.v_pdpages - osum.v_pdpages)); 440 dkstats(); 441 (void)printf("%4lu %4lu %3lu ", 442 rate(sum.v_intr - osum.v_intr), 443 rate(sum.v_syscall - osum.v_syscall), 444 rate(sum.v_swtch - osum.v_swtch)); 445 cpustats(); 446 (void)printf("\n"); 447 (void)fflush(stdout); 448 if (reps >= 0 && --reps <= 0) 449 break; 450 osum = sum; 451 uptime = interval; 452 /* 453 * We round upward to avoid losing low-frequency events 454 * (i.e., >= 1 per interval but < 1 per second). 455 */ 456 if (interval != 1) 457 halfuptime = (uptime + 1) / 2; 458 else 459 halfuptime = 0; 460 (void)sleep(interval); 461 } 462 } 463 464 printhdr() 465 { 466 register int i; 467 468 (void)printf(" procs memory page%*s", 20, ""); 469 if (ndrives > 1) 470 (void)printf("disks %*s faults cpu\n", 471 ndrives * 3 - 6, ""); 472 else 473 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 474 (void)printf(" r b w avm fre flt re pi po fr sr "); 475 for (i = 0; i < dk_ndrive; i++) 476 if (dr_select[i]) 477 (void)printf("%c%c ", dr_name[i][0], 478 dr_name[i][strlen(dr_name[i]) - 1]); 479 (void)printf(" in sy cs us sy id\n"); 480 hdrcnt = winlines - 2; 481 } 482 483 /* 484 * Force a header to be prepended to the next output. 485 */ 486 void 487 needhdr() 488 { 489 490 hdrcnt = 1; 491 } 492 493 #ifdef notdef 494 void 495 dotimes() 496 { 497 u_int pgintime, rectime; 498 499 kread(X_REC, &rectime, sizeof(rectime)); 500 kread(X_PGIN, &pgintime, sizeof(pgintime)); 501 kread(X_SUM, &sum, sizeof(sum)); 502 (void)printf("%u reclaims, %u total time (usec)\n", 503 sum.v_pgrec, rectime); 504 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 505 (void)printf("\n"); 506 (void)printf("%u page ins, %u total time (msec)\n", 507 sum.v_pgin, pgintime / 10); 508 (void)printf("average: %8.1f msec / page in\n", 509 pgintime / (sum.v_pgin * 10.0)); 510 } 511 #endif 512 513 pct(top, bot) 514 long top, bot; 515 { 516 long ans; 517 518 if (bot == 0) 519 return(0); 520 ans = (quad_t)top * 100 / bot; 521 return (ans); 522 } 523 524 #define PCT(top, bot) pct((long)(top), (long)(bot)) 525 526 #if defined(tahoe) 527 #include <machine/cpu.h> 528 #endif 529 530 void 531 dosum() 532 { 533 struct nchstats nchstats; 534 long nchtotal; 535 #if defined(tahoe) 536 struct keystats keystats; 537 #endif 538 539 kread(X_SUM, &sum, sizeof(sum)); 540 (void)printf("%9u cpu context switches\n", sum.v_swtch); 541 (void)printf("%9u device interrupts\n", sum.v_intr); 542 (void)printf("%9u software interrupts\n", sum.v_soft); 543 #ifdef vax 544 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 545 #endif 546 (void)printf("%9u traps\n", sum.v_trap); 547 (void)printf("%9u system calls\n", sum.v_syscall); 548 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 549 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 550 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 551 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 552 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 553 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 554 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 555 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 556 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 557 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 558 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 559 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 560 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 561 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 562 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 563 (void)printf("%9u pages freed\n", sum.v_tfree); 564 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 565 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 566 (void)printf("%9u pages active\n", sum.v_active_count); 567 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 568 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 569 (void)printf("%9u pages wired down\n", sum.v_wire_count); 570 (void)printf("%9u pages free\n", sum.v_free_count); 571 (void)printf("%9u bytes per page\n", sum.v_page_size); 572 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 573 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 574 nchstats.ncs_badhits + nchstats.ncs_falsehits + 575 nchstats.ncs_miss + nchstats.ncs_long; 576 (void)printf("%9ld total name lookups\n", nchtotal); 577 (void)printf( 578 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-directory\n", 579 "", PCT(nchstats.ncs_goodhits, nchtotal), 580 PCT(nchstats.ncs_neghits, nchtotal), 581 PCT(nchstats.ncs_pass2, nchtotal)); 582 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 583 PCT(nchstats.ncs_badhits, nchtotal), 584 PCT(nchstats.ncs_falsehits, nchtotal), 585 PCT(nchstats.ncs_long, nchtotal)); 586 #if defined(tahoe) 587 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 588 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 589 keystats.ks_allocs, "code cache keys allocated", 590 PCT(keystats.ks_allocfree, keystats.ks_allocs), 591 PCT(keystats.ks_norefs, keystats.ks_allocs), 592 PCT(keystats.ks_taken, keystats.ks_allocs), 593 PCT(keystats.ks_shared, keystats.ks_allocs)); 594 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 595 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 596 keystats.ks_allocs, "data cache keys allocated", 597 PCT(keystats.ks_allocfree, keystats.ks_allocs), 598 PCT(keystats.ks_norefs, keystats.ks_allocs), 599 PCT(keystats.ks_taken, keystats.ks_allocs), 600 PCT(keystats.ks_shared, keystats.ks_allocs)); 601 #endif 602 } 603 604 #ifdef notdef 605 void 606 doforkst() 607 { 608 struct forkstat fks; 609 610 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 611 (void)printf("%d forks, %d pages, average %.2f\n", 612 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 613 (void)printf("%d vforks, %d pages, average %.2f\n", 614 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 615 } 616 #endif 617 618 void 619 dkstats() 620 { 621 register int dn, state; 622 double etime; 623 long tmp; 624 625 for (dn = 0; dn < dk_ndrive; ++dn) { 626 tmp = cur.xfer[dn]; 627 cur.xfer[dn] -= last.xfer[dn]; 628 last.xfer[dn] = tmp; 629 } 630 etime = 0; 631 for (state = 0; state < CPUSTATES; ++state) { 632 tmp = cur.time[state]; 633 cur.time[state] -= last.time[state]; 634 last.time[state] = tmp; 635 etime += cur.time[state]; 636 } 637 if (etime == 0) 638 etime = 1; 639 etime /= hz; 640 for (dn = 0; dn < dk_ndrive; ++dn) { 641 if (!dr_select[dn]) 642 continue; 643 (void)printf("%2.0f ", cur.xfer[dn] / etime); 644 } 645 } 646 647 void 648 cpustats() 649 { 650 register int state; 651 double pct, total; 652 653 total = 0; 654 for (state = 0; state < CPUSTATES; ++state) 655 total += cur.time[state]; 656 if (total) 657 pct = 100 / total; 658 else 659 pct = 0; 660 (void)printf("%2.0f ", (cur.time[CP_USER] + cur.time[CP_NICE]) * pct); 661 (void)printf("%2.0f ", (cur.time[CP_SYS] + cur.time[CP_INTR]) * pct); 662 (void)printf("%2.0f", cur.time[CP_IDLE] * pct); 663 } 664 665 void 666 dointr() 667 { 668 register long *intrcnt, inttotal, uptime; 669 register int nintr, inamlen; 670 register char *intrname; 671 672 uptime = getuptime(); 673 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 674 inamlen = 675 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 676 intrcnt = malloc((size_t)nintr); 677 intrname = malloc((size_t)inamlen); 678 if (intrcnt == NULL || intrname == NULL) { 679 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 680 exit(1); 681 } 682 kread(X_INTRCNT, intrcnt, (size_t)nintr); 683 kread(X_INTRNAMES, intrname, (size_t)inamlen); 684 (void)printf("interrupt total rate\n"); 685 inttotal = 0; 686 nintr /= sizeof(long); 687 while (--nintr >= 0) { 688 if (*intrcnt) 689 (void)printf("%-12s %8ld %8ld\n", intrname, 690 *intrcnt, *intrcnt / uptime); 691 intrname += strlen(intrname) + 1; 692 inttotal += *intrcnt++; 693 } 694 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 695 } 696 697 /* 698 * These names are defined in <sys/malloc.h>. 699 */ 700 char *kmemnames[] = INITKMEMNAMES; 701 702 void 703 domem() 704 { 705 register struct kmembuckets *kp; 706 register struct kmemstats *ks; 707 register int i, j; 708 int len, size, first; 709 long totuse = 0, totfree = 0, totreq = 0; 710 char *name; 711 struct kmemstats kmemstats[M_LAST]; 712 struct kmembuckets buckets[MINBUCKET + 16]; 713 714 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 715 (void)printf("Memory statistics by bucket size\n"); 716 (void)printf( 717 "Size In Use Free Requests HighWater Couldfree\n"); 718 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 719 if (kp->kb_calls == 0) 720 continue; 721 size = 1 << i; 722 if(size < 1024) 723 (void)printf("%4d",size); 724 else 725 (void)printf("%3dK",size>>10); 726 (void)printf(" %8ld %6ld %10ld %7ld %10ld\n", 727 kp->kb_total - kp->kb_totalfree, 728 kp->kb_totalfree, kp->kb_calls, 729 kp->kb_highwat, kp->kb_couldfree); 730 totfree += size * kp->kb_totalfree; 731 } 732 733 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 734 (void)printf("\nMemory usage type by bucket size\n"); 735 (void)printf("Size Type(s)\n"); 736 kp = &buckets[MINBUCKET]; 737 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 738 if (kp->kb_calls == 0) 739 continue; 740 first = 1; 741 len = 8; 742 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 743 if (ks->ks_calls == 0) 744 continue; 745 if ((ks->ks_size & j) == 0) 746 continue; 747 name = kmemnames[i] ? kmemnames[i] : "undefined"; 748 len += 2 + strlen(name); 749 if (first && j < 1024) 750 printf("%4d %s", j, name); 751 else if (first) 752 printf("%3dK %s", j>>10, name); 753 else 754 printf(","); 755 if (len >= 79) { 756 printf("\n\t "); 757 len = 10 + strlen(name); 758 } 759 if (!first) 760 printf(" %s", name); 761 first = 0; 762 } 763 printf("\n"); 764 } 765 766 (void)printf( 767 "\nMemory statistics by type Type Kern\n"); 768 (void)printf( 769 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 770 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 771 if (ks->ks_calls == 0) 772 continue; 773 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 774 kmemnames[i] ? kmemnames[i] : "undefined", 775 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 776 (ks->ks_maxused + 1023) / 1024, 777 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 778 ks->ks_limblocks, ks->ks_mapblocks); 779 first = 1; 780 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 781 if ((ks->ks_size & j) == 0) 782 continue; 783 if (first) 784 printf(" "); 785 else 786 printf(","); 787 if(j<1024) 788 printf("%d",j); 789 else 790 printf("%dK",j>>10); 791 first = 0; 792 } 793 printf("\n"); 794 totuse += ks->ks_memuse; 795 totreq += ks->ks_calls; 796 } 797 (void)printf("\nMemory Totals: In Use Free Requests\n"); 798 (void)printf(" %7ldK %6ldK %8ld\n", 799 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 800 } 801 802 /* 803 * kread reads something from the kernel, given its nlist index. 804 */ 805 void 806 kread(nlx, addr, size) 807 int nlx; 808 void *addr; 809 size_t size; 810 { 811 char *sym; 812 813 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 814 sym = namelist[nlx].n_name; 815 if (*sym == '_') 816 ++sym; 817 (void)fprintf(stderr, 818 "vmstat: symbol %s not defined\n", sym); 819 exit(1); 820 } 821 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 822 sym = namelist[nlx].n_name; 823 if (*sym == '_') 824 ++sym; 825 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 826 exit(1); 827 } 828 } 829 830 void 831 usage() 832 { 833 (void)fprintf(stderr, 834 "usage: vmstat [-ims] [-c count] [-M core] \ 835 [-N system] [-w wait] [disks]\n"); 836 exit(1); 837 } 838