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 * @(#) Copyright (c) 1980, 1986, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)vmstat.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/vmstat/vmstat.c,v 1.38.2.4 2001/07/31 19:52:41 tmm Exp $ 36 * $DragonFly: src/usr.bin/vmstat/vmstat.c,v 1.6 2003/08/29 17:09:33 hmp Exp $ 37 */ 38 39 #define _KERNEL_STRUCTURES 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/proc.h> 43 #include <sys/dkstat.h> 44 #include <sys/uio.h> 45 #include <sys/namei.h> 46 #include <sys/malloc.h> 47 #include <sys/signal.h> 48 #include <sys/fcntl.h> 49 #include <sys/ioctl.h> 50 #include <sys/sysctl.h> 51 #include <sys/vmmeter.h> 52 53 #include <vm/vm_param.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <kvm.h> 59 #include <limits.h> 60 #include <nlist.h> 61 #include <paths.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <sysexits.h> 66 #include <time.h> 67 #include <unistd.h> 68 #include <devstat.h> 69 70 static struct nlist namelist[] = { 71 #define X_CPTIME 0 72 { "_cp_time" }, 73 #define X_BOOTTIME 1 74 { "_boottime" }, 75 #define X_HZ 2 76 { "_hz" }, 77 #define X_STATHZ 3 78 { "_stathz" }, 79 #define X_NCHSTATS 4 80 { "_nchstats" }, 81 #define X_INTRNAMES 5 82 { "_intrnames" }, 83 #define X_EINTRNAMES 6 84 { "_eintrnames" }, 85 #define X_INTRCNT 7 86 { "_intrcnt" }, 87 #define X_EINTRCNT 8 88 { "_eintrcnt" }, 89 #define X_KMEMSTATISTICS 9 90 { "_kmemstatistics" }, 91 #if 0 92 #define X_KMEMBUCKETS 10 93 { "_bucket" }, 94 #else 95 { "_kmemstatistics" }, 96 #endif 97 #define X_ZLIST 11 98 { "_zlist" }, 99 #ifdef notyet 100 #define X_DEFICIT 12 101 { "_deficit" }, 102 #define X_FORKSTAT 13 103 { "_forkstat" }, 104 #define X_REC 14 105 { "_rectime" }, 106 #define X_PGIN 15 107 { "_pgintime" }, 108 #define X_XSTATS 16 109 { "_xstats" }, 110 #define X_END 17 111 #else 112 #define X_END 12 113 #endif 114 { "" }, 115 }; 116 117 struct statinfo cur, last; 118 int num_devices, maxshowdevs; 119 long generation; 120 struct device_selection *dev_select; 121 int num_selected; 122 struct devstat_match *matches; 123 int num_matches = 0; 124 int num_devices_specified, num_selections; 125 long select_generation; 126 char **specified_devices; 127 devstat_select_mode select_mode; 128 129 struct vmmeter vmm, ovmm; 130 struct vmstats vms, ovms; 131 132 int winlines = 20; 133 int nflag = 0; 134 135 kvm_t *kd; 136 137 #define FORKSTAT 0x01 138 #define INTRSTAT 0x02 139 #define MEMSTAT 0x04 140 #define SUMSTAT 0x08 141 #define TIMESTAT 0x10 142 #define VMSTAT 0x20 143 #define ZMEMSTAT 0x40 144 145 void cpustats(), dointr(), domem(), dosum(), dozmem(); 146 void dovmstat(), kread(), usage(); 147 #ifdef notyet 148 void dotimes(), doforkst(); 149 #endif 150 void printhdr __P((void)); 151 static void devstats(); 152 153 int 154 main(argc, argv) 155 register int argc; 156 register char **argv; 157 { 158 register int c, todo; 159 u_int interval; 160 int reps; 161 char *memf, *nlistf; 162 char errbuf[_POSIX2_LINE_MAX]; 163 164 memf = nlistf = NULL; 165 interval = reps = todo = 0; 166 maxshowdevs = 2; 167 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 168 switch (c) { 169 case 'c': 170 reps = atoi(optarg); 171 break; 172 case 'f': 173 #ifdef notyet 174 todo |= FORKSTAT; 175 #else 176 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 177 #endif 178 break; 179 case 'i': 180 todo |= INTRSTAT; 181 break; 182 case 'M': 183 memf = optarg; 184 break; 185 case 'm': 186 todo |= MEMSTAT; 187 break; 188 case 'N': 189 nlistf = optarg; 190 break; 191 case 'n': 192 nflag = 1; 193 maxshowdevs = atoi(optarg); 194 if (maxshowdevs < 0) 195 errx(1, "number of devices %d is < 0", 196 maxshowdevs); 197 break; 198 case 'p': 199 if (buildmatch(optarg, &matches, &num_matches) != 0) 200 errx(1, "%s", devstat_errbuf); 201 break; 202 case 's': 203 todo |= SUMSTAT; 204 break; 205 case 't': 206 #ifdef notyet 207 todo |= TIMESTAT; 208 #else 209 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 210 #endif 211 break; 212 case 'w': 213 interval = atoi(optarg); 214 break; 215 case 'z': 216 todo |= ZMEMSTAT; 217 break; 218 case '?': 219 default: 220 usage(); 221 } 222 } 223 argc -= optind; 224 argv += optind; 225 226 if (todo == 0) 227 todo = VMSTAT; 228 229 /* 230 * Discard setgid privileges if not the running kernel so that bad 231 * guys can't print interesting stuff from kernel memory. 232 */ 233 if (nlistf != NULL || memf != NULL) 234 setgid(getgid()); 235 236 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 237 if (kd == 0) 238 errx(1, "kvm_openfiles: %s", errbuf); 239 240 if ((c = kvm_nlist(kd, namelist)) != 0) { 241 if (c > 0) { 242 warnx("undefined symbols:"); 243 for (c = 0; 244 c < sizeof(namelist)/sizeof(namelist[0]); c++) 245 if (namelist[c].n_type == 0) 246 fprintf(stderr, " %s", 247 namelist[c].n_name); 248 (void)fputc('\n', stderr); 249 } else 250 warnx("kvm_nlist: %s", kvm_geterr(kd)); 251 exit(1); 252 } 253 254 if (todo & VMSTAT) { 255 char **getdrivedata(); 256 struct winsize winsize; 257 258 /* 259 * Make sure that the userland devstat version matches the 260 * kernel devstat version. If not, exit and print a 261 * message informing the user of his mistake. 262 */ 263 if (checkversion() < 0) 264 errx(1, "%s", devstat_errbuf); 265 266 267 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 notyet 291 if (todo & FORKSTAT) 292 doforkst(); 293 #endif 294 if (todo & MEMSTAT) 295 domem(); 296 if (todo & ZMEMSTAT) 297 dozmem(); 298 if (todo & SUMSTAT) 299 dosum(); 300 #ifdef notyet 301 if (todo & TIMESTAT) 302 dotimes(); 303 #endif 304 if (todo & INTRSTAT) 305 dointr(); 306 if (todo & VMSTAT) 307 dovmstat(interval, reps); 308 exit(0); 309 } 310 311 char ** 312 getdrivedata(argv) 313 char **argv; 314 { 315 if ((num_devices = getnumdevs()) < 0) 316 errx(1, "%s", devstat_errbuf); 317 318 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 319 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 320 bzero(cur.dinfo, sizeof(struct devinfo)); 321 bzero(last.dinfo, sizeof(struct devinfo)); 322 323 if (getdevs(&cur) == -1) 324 errx(1, "%s", devstat_errbuf); 325 326 num_devices = cur.dinfo->numdevs; 327 generation = cur.dinfo->generation; 328 329 specified_devices = (char **)malloc(sizeof(char *)); 330 for (num_devices_specified = 0; *argv; ++argv) { 331 if (isdigit(**argv)) 332 break; 333 num_devices_specified++; 334 specified_devices = (char **)realloc(specified_devices, 335 sizeof(char *) * 336 num_devices_specified); 337 specified_devices[num_devices_specified - 1] = *argv; 338 } 339 dev_select = NULL; 340 341 if (nflag == 0 && maxshowdevs < num_devices_specified) 342 maxshowdevs = num_devices_specified; 343 344 /* 345 * People are generally only interested in disk statistics when 346 * they're running vmstat. So, that's what we're going to give 347 * them if they don't specify anything by default. We'll also give 348 * them any other random devices in the system so that we get to 349 * maxshowdevs devices, if that many devices exist. If the user 350 * specifies devices on the command line, either through a pattern 351 * match or by naming them explicitly, we will give the user only 352 * those devices. 353 */ 354 if ((num_devices_specified == 0) && (num_matches == 0)) { 355 if (buildmatch("da", &matches, &num_matches) != 0) 356 errx(1, "%s", devstat_errbuf); 357 358 select_mode = DS_SELECT_ADD; 359 } else 360 select_mode = DS_SELECT_ONLY; 361 362 /* 363 * At this point, selectdevs will almost surely indicate that the 364 * device list has changed, so we don't look for return values of 0 365 * or 1. If we get back -1, though, there is an error. 366 */ 367 if (selectdevs(&dev_select, &num_selected, &num_selections, 368 &select_generation, generation, cur.dinfo->devices, 369 num_devices, matches, num_matches, specified_devices, 370 num_devices_specified, select_mode, 371 maxshowdevs, 0) == -1) 372 errx(1, "%s", devstat_errbuf); 373 374 return(argv); 375 } 376 377 long 378 getuptime() 379 { 380 static time_t now, boottime; 381 time_t uptime; 382 383 if (boottime == 0) 384 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 385 (void)time(&now); 386 uptime = now - boottime; 387 if (uptime <= 0 || uptime > 60*60*24*365*10) 388 errx(1, "time makes no sense; namelist must be wrong"); 389 return(uptime); 390 } 391 392 int hz, hdrcnt; 393 394 void 395 dovmstat(interval, reps) 396 u_int interval; 397 int reps; 398 { 399 struct vmtotal total; 400 time_t uptime, halfuptime; 401 struct devinfo *tmp_dinfo; 402 void needhdr(); 403 int mib[2]; 404 size_t size; 405 int vmm_size = sizeof(vmm); 406 int vms_size = sizeof(vms); 407 int vmt_size = sizeof(total); 408 409 uptime = getuptime(); 410 halfuptime = uptime / 2; 411 (void)signal(SIGCONT, needhdr); 412 413 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 414 kread(X_STATHZ, &hz, sizeof(hz)); 415 if (!hz) 416 kread(X_HZ, &hz, sizeof(hz)); 417 418 for (hdrcnt = 1;;) { 419 if (!--hdrcnt) 420 printhdr(); 421 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 422 423 tmp_dinfo = last.dinfo; 424 last.dinfo = cur.dinfo; 425 cur.dinfo = tmp_dinfo; 426 last.busy_time = cur.busy_time; 427 428 /* 429 * Here what we want to do is refresh our device stats. 430 * getdevs() returns 1 when the device list has changed. 431 * If the device list has changed, we want to go through 432 * the selection process again, in case a device that we 433 * were previously displaying has gone away. 434 */ 435 switch (getdevs(&cur)) { 436 case -1: 437 errx(1, "%s", devstat_errbuf); 438 break; 439 case 1: { 440 int retval; 441 442 num_devices = cur.dinfo->numdevs; 443 generation = cur.dinfo->generation; 444 445 retval = selectdevs(&dev_select, &num_selected, 446 &num_selections, &select_generation, 447 generation, cur.dinfo->devices, 448 num_devices, matches, num_matches, 449 specified_devices, 450 num_devices_specified, select_mode, 451 maxshowdevs, 0); 452 switch (retval) { 453 case -1: 454 errx(1, "%s", devstat_errbuf); 455 break; 456 case 1: 457 printhdr(); 458 break; 459 default: 460 break; 461 } 462 } 463 default: 464 break; 465 } 466 467 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 468 perror("sysctlbyname: vm.vmstats"); 469 exit(1); 470 } 471 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 472 perror("sysctlbyname: vm.vmmeter"); 473 exit(1); 474 } 475 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 476 perror("sysctlbyname: vm.vmtotal"); 477 exit(1); 478 } 479 (void)printf("%2d %1d %1d", 480 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 481 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 482 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 483 (void)printf(" %7ld %6ld ", 484 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 485 (void)printf("%4lu ", 486 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 487 (void)printf("%3lu ", 488 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 489 (void)printf("%3lu ", 490 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 491 (ovmm.v_swapin + ovmm.v_vnodein))); 492 (void)printf("%3lu ", 493 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 494 (ovmm.v_swapout + ovmm.v_vnodeout))); 495 (void)printf("%3lu ", 496 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 497 (void)printf("%3lu ", 498 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 499 devstats(); 500 (void)printf("%4lu %4lu %3lu ", 501 (u_long)rate(vmm.v_intr - ovmm.v_intr), 502 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 503 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 504 cpustats(); 505 (void)printf("\n"); 506 (void)fflush(stdout); 507 if (reps >= 0 && --reps <= 0) 508 break; 509 ovmm = vmm; 510 uptime = interval; 511 /* 512 * We round upward to avoid losing low-frequency events 513 * (i.e., >= 1 per interval but < 1 per second). 514 */ 515 if (interval != 1) 516 halfuptime = (uptime + 1) / 2; 517 else 518 halfuptime = 0; 519 (void)sleep(interval); 520 } 521 } 522 523 void 524 printhdr() 525 { 526 int i, num_shown; 527 528 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 529 (void)printf(" procs memory page%*s", 19, ""); 530 if (num_shown > 1) 531 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 532 else if (num_shown == 1) 533 (void)printf("disk"); 534 (void)printf(" faults cpu\n"); 535 (void)printf(" r b w avm fre flt re pi po fr sr "); 536 for (i = 0; i < num_devices; i++) 537 if ((dev_select[i].selected) 538 && (dev_select[i].selected <= maxshowdevs)) 539 (void)printf("%c%c%d ", dev_select[i].device_name[0], 540 dev_select[i].device_name[1], 541 dev_select[i].unit_number); 542 (void)printf(" in sy cs us sy id\n"); 543 hdrcnt = winlines - 2; 544 } 545 546 /* 547 * Force a header to be prepended to the next output. 548 */ 549 void 550 needhdr() 551 { 552 553 hdrcnt = 1; 554 } 555 556 long 557 pct(top, bot) 558 long top, bot; 559 { 560 long ans; 561 562 if (bot == 0) 563 return(0); 564 ans = (quad_t)top * 100 / bot; 565 return (ans); 566 } 567 568 #define PCT(top, bot) pct((long)(top), (long)(bot)) 569 570 void 571 dosum() 572 { 573 struct nchstats nchstats; 574 long nchtotal; 575 int vms_size = sizeof(vms); 576 int vmm_size = sizeof(vmm); 577 578 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 579 perror("sysctlbyname: vm.vmstats"); 580 exit(1); 581 } 582 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 583 perror("sysctlbyname: vm.vmstats"); 584 exit(1); 585 } 586 (void)printf("%9u cpu context switches\n", vmm.v_swtch); 587 (void)printf("%9u device interrupts\n", vmm.v_intr); 588 (void)printf("%9u software interrupts\n", vmm.v_soft); 589 (void)printf("%9u traps\n", vmm.v_trap); 590 (void)printf("%9u system calls\n", vmm.v_syscall); 591 (void)printf("%9u kernel threads created\n", vmm.v_kthreads); 592 (void)printf("%9u fork() calls\n", vmm.v_forks); 593 (void)printf("%9u vfork() calls\n", vmm.v_vforks); 594 (void)printf("%9u rfork() calls\n", vmm.v_rforks); 595 (void)printf("%9u swap pager pageins\n", vmm.v_swapin); 596 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 597 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout); 598 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 599 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein); 600 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 601 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 602 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 603 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 604 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 605 (void)printf("%9u pages reactivated\n", vmm.v_reactivated); 606 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 607 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 608 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 609 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 610 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans); 611 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults); 612 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 613 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages); 614 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 615 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 616 (void)printf("%9u pages freed\n", vmm.v_tfree); 617 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree); 618 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 619 (void)printf("%9u pages active\n", vms.v_active_count); 620 (void)printf("%9u pages inactive\n", vms.v_inactive_count); 621 (void)printf("%9u pages in VM cache\n", vms.v_cache_count); 622 (void)printf("%9u pages wired down\n", vms.v_wire_count); 623 (void)printf("%9u pages free\n", vms.v_free_count); 624 (void)printf("%9u bytes per page\n", vms.v_page_size); 625 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 626 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 627 nchstats.ncs_badhits + nchstats.ncs_falsehits + 628 nchstats.ncs_miss + nchstats.ncs_long; 629 (void)printf("%9ld total name lookups\n", nchtotal); 630 (void)printf( 631 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 632 "", PCT(nchstats.ncs_goodhits, nchtotal), 633 PCT(nchstats.ncs_neghits, nchtotal), 634 PCT(nchstats.ncs_pass2, nchtotal)); 635 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 636 PCT(nchstats.ncs_badhits, nchtotal), 637 PCT(nchstats.ncs_falsehits, nchtotal), 638 PCT(nchstats.ncs_long, nchtotal)); 639 } 640 641 #ifdef notyet 642 void 643 doforkst() 644 { 645 struct forkstat fks; 646 647 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 648 (void)printf("%d forks, %d pages, average %.2f\n", 649 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 650 (void)printf("%d vforks, %d pages, average %.2f\n", 651 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 652 } 653 #endif 654 655 static void 656 devstats() 657 { 658 register int dn, state; 659 long double transfers_per_second; 660 long double busy_seconds; 661 long tmp; 662 663 for (state = 0; state < CPUSTATES; ++state) { 664 tmp = cur.cp_time[state]; 665 cur.cp_time[state] -= last.cp_time[state]; 666 last.cp_time[state] = tmp; 667 } 668 669 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 670 671 for (dn = 0; dn < num_devices; dn++) { 672 int di; 673 674 if ((dev_select[dn].selected == 0) 675 || (dev_select[dn].selected > maxshowdevs)) 676 continue; 677 678 di = dev_select[dn].position; 679 680 if (compute_stats(&cur.dinfo->devices[di], 681 &last.dinfo->devices[di], busy_seconds, 682 NULL, NULL, NULL, 683 NULL, &transfers_per_second, NULL, 684 NULL, NULL) != 0) 685 errx(1, "%s", devstat_errbuf); 686 687 printf("%3.0Lf ", transfers_per_second); 688 } 689 } 690 691 void 692 cpustats() 693 { 694 register int state; 695 double pct, total; 696 697 total = 0; 698 for (state = 0; state < CPUSTATES; ++state) 699 total += cur.cp_time[state]; 700 if (total) 701 pct = 100 / total; 702 else 703 pct = 0; 704 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 705 cur.cp_time[CP_NICE]) * pct); 706 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 707 cur.cp_time[CP_INTR]) * pct); 708 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 709 } 710 711 void 712 dointr() 713 { 714 register u_long *intrcnt, uptime; 715 register u_int64_t inttotal; 716 register int nintr, inamlen; 717 register char *intrname; 718 719 uptime = getuptime(); 720 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 721 inamlen = 722 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 723 intrcnt = malloc((size_t)nintr); 724 intrname = malloc((size_t)inamlen); 725 if (intrcnt == NULL || intrname == NULL) 726 errx(1, "malloc"); 727 kread(X_INTRCNT, intrcnt, (size_t)nintr); 728 kread(X_INTRNAMES, intrname, (size_t)inamlen); 729 (void)printf("interrupt total rate\n"); 730 inttotal = 0; 731 nintr /= sizeof(long); 732 while (--nintr >= 0) { 733 if (*intrcnt) 734 (void)printf("%-12s %20lu %10lu\n", intrname, 735 *intrcnt, *intrcnt / uptime); 736 intrname += strlen(intrname) + 1; 737 inttotal += *intrcnt++; 738 } 739 (void)printf("Total %20llu %10llu\n", inttotal, 740 inttotal / (u_int64_t) uptime); 741 } 742 743 #define MAX_KMSTATS 200 744 745 void 746 domem() 747 { 748 register struct kmembuckets *kp; 749 register struct malloc_type *ks; 750 register int i, j; 751 int len, size, first, nkms; 752 long totuse = 0, totfree = 0, totreq = 0; 753 const char *name; 754 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 755 char buf[1024]; 756 struct kmembuckets buckets[MINBUCKET + 16]; 757 758 #ifdef X_KMEMBUCKETS 759 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 760 #else 761 bzero(buckets, sizeof(buckets)); 762 #endif 763 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 764 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 765 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 766 &kmemstats[nkms], sizeof(kmemstats[0]))) 767 err(1, "kvm_read(%p)", (void *)kmsp); 768 if (sizeof(buf) != kvm_read(kd, 769 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 770 err(1, "kvm_read(%p)", 771 (void *)kmemstats[nkms].ks_shortdesc); 772 buf[sizeof(buf) - 1] = '\0'; 773 kmemstats[nkms].ks_shortdesc = strdup(buf); 774 kmsp = kmemstats[nkms].ks_next; 775 } 776 if (kmsp != NULL) 777 warnx("truncated to the first %d memory types", nkms); 778 (void)printf("Memory statistics by bucket size\n"); 779 (void)printf( 780 "Size In Use Free Requests HighWater Couldfree\n"); 781 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 782 if (kp->kb_calls == 0) 783 continue; 784 size = 1 << i; 785 if(size < 1024) 786 (void)printf("%4d",size); 787 else 788 (void)printf("%3dK",size>>10); 789 (void)printf(" %8ld %6ld %10lld %7ld %10ld\n", 790 kp->kb_total - kp->kb_totalfree, 791 kp->kb_totalfree, kp->kb_calls, 792 kp->kb_highwat, kp->kb_couldfree); 793 totfree += size * kp->kb_totalfree; 794 } 795 796 (void)printf("\nMemory usage type by bucket size\n"); 797 (void)printf("Size Type(s)\n"); 798 kp = &buckets[MINBUCKET]; 799 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 800 if (kp->kb_calls == 0) 801 continue; 802 first = 1; 803 len = 8; 804 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 805 if (ks->ks_calls == 0) 806 continue; 807 if ((ks->ks_size & j) == 0) 808 continue; 809 name = ks->ks_shortdesc; 810 len += 2 + strlen(name); 811 if (first && j < 1024) 812 printf("%4d %s", j, name); 813 else if (first) 814 printf("%3dK %s", j>>10, name); 815 else 816 printf(","); 817 if (len >= 79) { 818 printf("\n\t "); 819 len = 10 + strlen(name); 820 } 821 if (!first) 822 printf(" %s", name); 823 first = 0; 824 } 825 printf("\n"); 826 } 827 828 (void)printf( 829 "\nMemory statistics by type Type Kern\n"); 830 (void)printf( 831 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 832 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 833 if (ks->ks_calls == 0) 834 continue; 835 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 836 ks->ks_shortdesc, 837 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 838 (ks->ks_maxused + 1023) / 1024, 839 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 840 ks->ks_limblocks, ks->ks_mapblocks); 841 first = 1; 842 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 843 if ((ks->ks_size & j) == 0) 844 continue; 845 if (first) 846 printf(" "); 847 else 848 printf(","); 849 if(j<1024) 850 printf("%d",j); 851 else 852 printf("%dK",j>>10); 853 first = 0; 854 } 855 printf("\n"); 856 totuse += ks->ks_memuse; 857 totreq += ks->ks_calls; 858 } 859 (void)printf("\nMemory Totals: In Use Free Requests\n"); 860 (void)printf(" %7ldK %6ldK %8ld\n", 861 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 862 } 863 864 void 865 dozmem() 866 { 867 char *buf; 868 size_t bufsize; 869 870 buf = NULL; 871 bufsize = 1024; 872 for (;;) { 873 if ((buf = realloc(buf, bufsize)) == NULL) 874 err(1, "realloc()"); 875 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 876 break; 877 if (errno != ENOMEM) 878 err(1, "sysctl()"); 879 bufsize *= 2; 880 } 881 buf[bufsize] = '\0'; /* play it safe */ 882 (void)printf("%s\n\n", buf); 883 free(buf); 884 } 885 886 /* 887 * kread reads something from the kernel, given its nlist index. 888 */ 889 void 890 kread(nlx, addr, size) 891 int nlx; 892 void *addr; 893 size_t size; 894 { 895 char *sym; 896 897 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 898 sym = namelist[nlx].n_name; 899 if (*sym == '_') 900 ++sym; 901 errx(1, "symbol %s not defined", sym); 902 } 903 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 904 sym = namelist[nlx].n_name; 905 if (*sym == '_') 906 ++sym; 907 errx(1, "%s: %s", sym, kvm_geterr(kd)); 908 } 909 } 910 911 void 912 usage() 913 { 914 (void)fprintf(stderr, "%s%s", 915 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 916 " [-n devs] [disks]\n"); 917 exit(1); 918 } 919