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 */ 37 38 #include <sys/user.h> 39 #include <sys/param.h> 40 #include <sys/time.h> 41 #include <sys/uio.h> 42 #include <sys/namei.h> 43 #include <sys/malloc.h> 44 #include <sys/signal.h> 45 #include <sys/fcntl.h> 46 #include <sys/ioctl.h> 47 #include <sys/sysctl.h> 48 #include <sys/vmmeter.h> 49 #include <sys/interrupt.h> 50 51 #include <vm/vm_param.h> 52 53 #include <ctype.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <kinfo.h> 57 #include <kvm.h> 58 #include <limits.h> 59 #include <nlist.h> 60 #include <paths.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <sysexits.h> 65 #include <time.h> 66 #include <unistd.h> 67 #include <devstat.h> 68 69 static struct nlist namelist[] = { 70 #define X_BOOTTIME 0 71 { "_boottime", 0, 0, 0, 0 }, 72 #define X_NCHSTATS 1 73 { "_nchstats", 0, 0, 0, 0 }, 74 #define X_KMEMSTATISTICS 2 75 { "_kmemstatistics", 0, 0, 0, 0 }, 76 #define X_ZLIST 3 77 { "_zlist", 0, 0, 0, 0 }, 78 #ifdef notyet 79 #define X_DEFICIT 4 80 { "_deficit", 0, 0, 0, 0 }, 81 #define X_FORKSTAT 5 82 { "_forkstat", 0, 0, 0, 0 }, 83 #define X_REC 6 84 { "_rectime", 0, 0, 0, 0 }, 85 #define X_PGIN 7 86 { "_pgintime", 0, 0, 0, 0 }, 87 #define X_XSTATS 8 88 { "_xstats", 0, 0, 0, 0 }, 89 #define X_END 9 90 #else 91 #define X_END 4 92 #endif 93 { "", 0, 0, 0, 0 }, 94 }; 95 96 struct statinfo cur, last; 97 int num_devices, maxshowdevs; 98 long generation; 99 struct device_selection *dev_select; 100 int num_selected; 101 struct devstat_match *matches; 102 int num_matches = 0; 103 int num_devices_specified, num_selections; 104 long select_generation; 105 char **specified_devices; 106 devstat_select_mode select_mode; 107 108 struct vmmeter vmm, ovmm; 109 struct vmstats vms, ovms; 110 111 int winlines = 20; 112 int nflag = 0; 113 int verbose = 0; 114 115 kvm_t *kd; 116 117 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time; 118 119 #define FORKSTAT 0x01 120 #define INTRSTAT 0x02 121 #define MEMSTAT 0x04 122 #define SUMSTAT 0x08 123 #define TIMESTAT 0x10 124 #define VMSTAT 0x20 125 #define ZMEMSTAT 0x40 126 127 static void cpustats(void); 128 static void dointr(void); 129 static void domem(void); 130 static void dosum(void); 131 static void dozmem(void); 132 static void dovmstat(u_int, int); 133 static void kread(int, void *, size_t); 134 static void usage(void); 135 static char **getdrivedata(char **); 136 static long getuptime(void); 137 static void needhdr(int); 138 static long pct(long, long); 139 140 #ifdef notyet 141 static void dotimes(void); /* Not implemented */ 142 static void doforkst(void); 143 #endif 144 static void printhdr(void); 145 static void devstats(void); 146 147 int 148 main(int argc, char **argv) 149 { 150 int c, todo; 151 u_int interval; /* milliseconds */ 152 int reps; 153 char *memf, *nlistf; 154 char errbuf[_POSIX2_LINE_MAX]; 155 156 memf = nlistf = NULL; 157 interval = reps = todo = 0; 158 maxshowdevs = 2; 159 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) { 160 switch (c) { 161 case 'c': 162 reps = atoi(optarg); 163 break; 164 case 'f': 165 #ifdef notyet 166 todo |= FORKSTAT; 167 #else 168 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 169 #endif 170 break; 171 case 'i': 172 todo |= INTRSTAT; 173 break; 174 case 'M': 175 memf = optarg; 176 break; 177 case 'm': 178 todo |= MEMSTAT; 179 break; 180 case 'N': 181 nlistf = optarg; 182 break; 183 case 'n': 184 nflag = 1; 185 maxshowdevs = atoi(optarg); 186 if (maxshowdevs < 0) 187 errx(1, "number of devices %d is < 0", 188 maxshowdevs); 189 break; 190 case 'p': 191 if (buildmatch(optarg, &matches, &num_matches) != 0) 192 errx(1, "%s", devstat_errbuf); 193 break; 194 case 's': 195 todo |= SUMSTAT; 196 break; 197 case 't': 198 #ifdef notyet 199 todo |= TIMESTAT; 200 #else 201 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 202 #endif 203 break; 204 case 'v': 205 ++verbose; 206 break; 207 case 'w': 208 interval = (u_int)(strtod(optarg, NULL) * 1000.0); 209 break; 210 case 'z': 211 todo |= ZMEMSTAT; 212 break; 213 default: 214 usage(); 215 } 216 } 217 argc -= optind; 218 argv += optind; 219 220 if (todo == 0) 221 todo = VMSTAT; 222 223 /* 224 * Discard setgid privileges if not the running kernel so that bad 225 * guys can't print interesting stuff from kernel memory. 226 */ 227 if (nlistf != NULL || memf != NULL) 228 setgid(getgid()); 229 230 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 231 if (kd == NULL) 232 errx(1, "kvm_openfiles: %s", errbuf); 233 234 if ((c = kvm_nlist(kd, namelist)) != 0) { 235 if (c > 0) { 236 warnx("undefined symbols:"); 237 for (c = 0; c < (int)__arysize(namelist); c++) 238 if (namelist[c].n_type == 0) 239 fprintf(stderr, " %s", 240 namelist[c].n_name); 241 fputc('\n', stderr); 242 } else 243 warnx("kvm_nlist: %s", kvm_geterr(kd)); 244 exit(1); 245 } 246 247 if (todo & VMSTAT) { 248 struct winsize winsize; 249 250 /* 251 * Make sure that the userland devstat version matches the 252 * kernel devstat version. If not, exit and print a 253 * message informing the user of his mistake. 254 */ 255 if (checkversion() < 0) 256 errx(1, "%s", devstat_errbuf); 257 258 259 argv = getdrivedata(argv); 260 winsize.ws_row = 0; 261 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 262 if (winsize.ws_row > 0) 263 winlines = winsize.ws_row; 264 265 } 266 267 #define BACKWARD_COMPATIBILITY 268 #ifdef BACKWARD_COMPATIBILITY 269 if (*argv) { 270 interval = (u_int)(strtod(*argv, NULL) * 1000.0); 271 if (*++argv) 272 reps = atoi(*argv); 273 } 274 #endif 275 276 if (interval) { 277 if (!reps) 278 reps = -1; 279 } else if (reps) { 280 interval = 1000; 281 } 282 283 #ifdef notyet 284 if (todo & FORKSTAT) 285 doforkst(); 286 #endif 287 if (todo & MEMSTAT) 288 domem(); 289 if (todo & ZMEMSTAT) 290 dozmem(); 291 if (todo & SUMSTAT) 292 dosum(); 293 #ifdef notyet 294 if (todo & TIMESTAT) 295 dotimes(); 296 #endif 297 if (todo & INTRSTAT) 298 dointr(); 299 if (todo & VMSTAT) 300 dovmstat(interval, reps); 301 exit(0); 302 } 303 304 static char ** 305 getdrivedata(char **argv) 306 { 307 if ((num_devices = getnumdevs()) < 0) 308 errx(1, "%s", devstat_errbuf); 309 310 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 311 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 312 bzero(cur.dinfo, sizeof(struct devinfo)); 313 bzero(last.dinfo, sizeof(struct devinfo)); 314 315 if (getdevs(&cur) == -1) 316 errx(1, "%s", devstat_errbuf); 317 318 num_devices = cur.dinfo->numdevs; 319 generation = cur.dinfo->generation; 320 321 specified_devices = (char **)malloc(sizeof(char *)); 322 for (num_devices_specified = 0; *argv; ++argv) { 323 if (isdigit(**argv)) 324 break; 325 num_devices_specified++; 326 specified_devices = (char **)realloc(specified_devices, 327 sizeof(char *) * 328 num_devices_specified); 329 specified_devices[num_devices_specified - 1] = *argv; 330 } 331 dev_select = NULL; 332 333 if (nflag == 0 && maxshowdevs < num_devices_specified) 334 maxshowdevs = num_devices_specified; 335 336 /* 337 * People are generally only interested in disk statistics when 338 * they're running vmstat. So, that's what we're going to give 339 * them if they don't specify anything by default. We'll also give 340 * them any other random devices in the system so that we get to 341 * maxshowdevs devices, if that many devices exist. If the user 342 * specifies devices on the command line, either through a pattern 343 * match or by naming them explicitly, we will give the user only 344 * those devices. 345 */ 346 if ((num_devices_specified == 0) && (num_matches == 0)) { 347 if (buildmatch("da", &matches, &num_matches) != 0) 348 errx(1, "%s", devstat_errbuf); 349 350 select_mode = DS_SELECT_ADD; 351 } else 352 select_mode = DS_SELECT_ONLY; 353 354 /* 355 * At this point, selectdevs will almost surely indicate that the 356 * device list has changed, so we don't look for return values of 0 357 * or 1. If we get back -1, though, there is an error. 358 */ 359 if (selectdevs(&dev_select, &num_selected, &num_selections, 360 &select_generation, generation, cur.dinfo->devices, 361 num_devices, matches, num_matches, specified_devices, 362 num_devices_specified, select_mode, 363 maxshowdevs, 0) == -1) 364 errx(1, "%s", devstat_errbuf); 365 366 return(argv); 367 } 368 369 static long 370 getuptime(void) 371 { 372 static time_t now, boottime; 373 time_t uptime; 374 375 if (boottime == 0) 376 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 377 time(&now); 378 uptime = now - boottime; 379 if (uptime <= 0 || uptime > 60*60*24*365*10) 380 errx(1, "time makes no sense; namelist must be wrong"); 381 return(uptime); 382 } 383 384 int hdrcnt; 385 386 static void 387 dovmstat(u_int interval, int reps) 388 { 389 struct vmtotal total; 390 struct devinfo *tmp_dinfo; 391 size_t vmm_size = sizeof(vmm); 392 size_t vms_size = sizeof(vms); 393 size_t vmt_size = sizeof(total); 394 int initial = 1; 395 396 signal(SIGCONT, needhdr); 397 398 for (hdrcnt = 1;;) { 399 if (!--hdrcnt) 400 printhdr(); 401 if (kinfo_get_sched_cputime(&cp_time)) 402 err(1, "kinfo_get_sched_cputime"); 403 404 tmp_dinfo = last.dinfo; 405 last.dinfo = cur.dinfo; 406 cur.dinfo = tmp_dinfo; 407 last.busy_time = cur.busy_time; 408 409 /* 410 * Here what we want to do is refresh our device stats. 411 * getdevs() returns 1 when the device list has changed. 412 * If the device list has changed, we want to go through 413 * the selection process again, in case a device that we 414 * were previously displaying has gone away. 415 */ 416 switch (getdevs(&cur)) { 417 case -1: 418 errx(1, "%s", devstat_errbuf); 419 break; 420 case 1: { 421 int retval; 422 423 num_devices = cur.dinfo->numdevs; 424 generation = cur.dinfo->generation; 425 426 retval = selectdevs(&dev_select, &num_selected, 427 &num_selections, &select_generation, 428 generation, cur.dinfo->devices, 429 num_devices, matches, num_matches, 430 specified_devices, 431 num_devices_specified, select_mode, 432 maxshowdevs, 0); 433 switch (retval) { 434 case -1: 435 errx(1, "%s", devstat_errbuf); 436 break; 437 case 1: 438 printhdr(); 439 break; 440 default: 441 break; 442 } 443 } 444 default: 445 break; 446 } 447 448 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 449 perror("sysctlbyname: vm.vmstats"); 450 exit(1); 451 } 452 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 453 perror("sysctlbyname: vm.vmmeter"); 454 exit(1); 455 } 456 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 457 perror("sysctlbyname: vm.vmtotal"); 458 exit(1); 459 } 460 printf("%2ld %1ld %1ld", 461 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 462 463 #define vmstat_pgtok(a) \ 464 (intmax_t)(((intmax_t)(a) * vms.v_page_size) >> 10) 465 #define rate(x) \ 466 (intmax_t)(initial ? (x) : ((intmax_t)(x) * 1000 + interval / 2) \ 467 / interval) 468 469 printf(" %7jd %6jd ", 470 vmstat_pgtok(total.t_avm), 471 vmstat_pgtok(total.t_free)); 472 printf("%4ju ", 473 rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 474 printf("%3ju ", 475 rate(vmm.v_reactivated - ovmm.v_reactivated)); 476 printf("%3ju ", 477 rate(vmm.v_swapin + vmm.v_vnodein - 478 (ovmm.v_swapin + ovmm.v_vnodein))); 479 printf("%3ju ", 480 rate(vmm.v_swapout + vmm.v_vnodeout - 481 (ovmm.v_swapout + ovmm.v_vnodeout))); 482 printf("%3ju ", 483 rate(vmm.v_tfree - ovmm.v_tfree)); 484 printf("%3ju ", 485 rate(vmm.v_pdpages - ovmm.v_pdpages)); 486 devstats(); 487 printf("%4ju %4ju %3ju ", 488 rate(vmm.v_intr - ovmm.v_intr), 489 rate(vmm.v_syscall - ovmm.v_syscall), 490 rate(vmm.v_swtch - ovmm.v_swtch)); 491 cpustats(); 492 printf("\n"); 493 fflush(stdout); 494 if (reps >= 0 && --reps <= 0) 495 break; 496 ovmm = vmm; 497 usleep(interval * 1000); 498 initial = 0; 499 } 500 } 501 502 static void 503 printhdr(void) 504 { 505 int i, num_shown; 506 507 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 508 printf(" procs memory page%*s", 19, ""); 509 if (num_shown > 1) 510 printf(" disks %*s", num_shown * 4 - 7, ""); 511 else if (num_shown == 1) 512 printf("disk"); 513 printf(" faults cpu\n"); 514 printf(" r b w avm fre flt re pi po fr sr "); 515 for (i = 0; i < num_devices; i++) 516 if ((dev_select[i].selected) 517 && (dev_select[i].selected <= maxshowdevs)) 518 printf("%c%c%d ", dev_select[i].device_name[0], 519 dev_select[i].device_name[1], 520 dev_select[i].unit_number); 521 printf(" in sy cs us sy id\n"); 522 hdrcnt = winlines - 2; 523 } 524 525 /* 526 * Force a header to be prepended to the next output. 527 */ 528 static void 529 needhdr(__unused int signo) 530 { 531 532 hdrcnt = 1; 533 } 534 535 static long 536 pct(long top, long bot) 537 { 538 long ans; 539 540 if (bot == 0) 541 return(0); 542 ans = (quad_t)top * 100 / bot; 543 return (ans); 544 } 545 546 #define PCT(top, bot) pct((long)(top), (long)(bot)) 547 548 static void 549 dosum(void) 550 { 551 struct nchstats *nch_tmp, nchstats; 552 size_t vms_size = sizeof(vms); 553 size_t vmm_size = sizeof(vmm); 554 int cpucnt; 555 u_long nchtotal; 556 u_long nchpathtotal; 557 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 558 559 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 560 perror("sysctlbyname: vm.vmstats"); 561 exit(1); 562 } 563 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 564 perror("sysctlbyname: vm.vmstats"); 565 exit(1); 566 } 567 printf("%9u cpu context switches\n", vmm.v_swtch); 568 printf("%9u device interrupts\n", vmm.v_intr); 569 printf("%9u software interrupts\n", vmm.v_soft); 570 printf("%9u traps\n", vmm.v_trap); 571 printf("%9u system calls\n", vmm.v_syscall); 572 printf("%9u kernel threads created\n", vmm.v_kthreads); 573 printf("%9u fork() calls\n", vmm.v_forks); 574 printf("%9u vfork() calls\n", vmm.v_vforks); 575 printf("%9u rfork() calls\n", vmm.v_rforks); 576 printf("%9u exec() calls\n", vmm.v_exec); 577 printf("%9u swap pager pageins\n", vmm.v_swapin); 578 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 579 printf("%9u swap pager pageouts\n", vmm.v_swapout); 580 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 581 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 582 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 583 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 584 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 585 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 586 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 587 printf("%9u pages reactivated\n", vmm.v_reactivated); 588 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 589 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 590 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 591 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 592 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 593 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 594 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 595 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 596 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 597 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 598 printf("%9u pages freed\n", vmm.v_tfree); 599 printf("%9u pages freed by daemon\n", vmm.v_dfree); 600 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 601 printf("%9u pages active\n", vms.v_active_count); 602 printf("%9u pages inactive\n", vms.v_inactive_count); 603 printf("%9u pages in VM cache\n", vms.v_cache_count); 604 printf("%9u pages wired down\n", vms.v_wire_count); 605 printf("%9u pages free\n", vms.v_free_count); 606 printf("%9u bytes per page\n", vms.v_page_size); 607 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb); 608 609 if ((nch_tmp = malloc(nch_size)) == NULL) { 610 perror("malloc"); 611 exit(1); 612 } else { 613 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 614 perror("sysctlbyname vfs.cache.nchstats"); 615 free(nch_tmp); 616 exit(1); 617 } else { 618 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 619 perror("realloc"); 620 exit(1); 621 } 622 } 623 } 624 625 cpucnt = nch_size / sizeof(struct nchstats); 626 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 627 628 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 629 nchstats.ncs_badhits + nchstats.ncs_falsehits + 630 nchstats.ncs_miss; 631 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss; 632 printf("%9ld total path lookups\n", nchpathtotal); 633 printf("%9ld total component lookups\n", nchtotal); 634 printf( 635 "%9s cache hits (%ld%% pos + %ld%% neg)\n", 636 "", PCT(nchstats.ncs_goodhits, nchtotal), 637 PCT(nchstats.ncs_neghits, nchtotal)); 638 printf("%9s deletions %ld%%, falsehits %ld%%\n", "", 639 PCT(nchstats.ncs_badhits, nchtotal), 640 PCT(nchstats.ncs_falsehits, nchtotal)); 641 free(nch_tmp); 642 } 643 644 #ifdef notyet 645 void 646 doforkst(void) 647 { 648 struct forkstat fks; 649 650 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 651 printf("%d forks, %d pages, average %.2f\n", 652 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 653 printf("%d vforks, %d pages, average %.2f\n", 654 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 655 } 656 #endif 657 658 static void 659 devstats(void) 660 { 661 int dn; 662 long double transfers_per_second; 663 long double busy_seconds; 664 665 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 666 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 667 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 668 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 669 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 670 old_cp_time = cp_time; 671 672 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 673 674 for (dn = 0; dn < num_devices; dn++) { 675 int di; 676 677 if ((dev_select[dn].selected == 0) 678 || (dev_select[dn].selected > maxshowdevs)) 679 continue; 680 681 di = dev_select[dn].position; 682 683 if (compute_stats(&cur.dinfo->devices[di], 684 &last.dinfo->devices[di], busy_seconds, 685 NULL, NULL, NULL, 686 NULL, &transfers_per_second, NULL, 687 NULL, NULL) != 0) 688 errx(1, "%s", devstat_errbuf); 689 690 printf("%3.0Lf ", transfers_per_second); 691 } 692 } 693 694 static void 695 cpustats(void) 696 { 697 uint64_t total; 698 double totusage; 699 700 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 701 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 702 703 if (total) 704 totusage = 100.0 / total; 705 else 706 totusage = 0; 707 printf("%2.0f ", 708 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 709 printf("%2.0f ", 710 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 711 printf("%2.0f", 712 diff_cp_time.cp_idle * totusage); 713 } 714 715 static void 716 dointr(void) 717 { 718 u_long *intrcnt, uptime; 719 u_int64_t inttotal; 720 size_t nintr, inamlen, i, size; 721 int nwidth; 722 char *intrstr; 723 char **intrname; 724 725 uptime = getuptime(); 726 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 727 errx(1, "sysctlbyname"); 728 intrstr = malloc(inamlen); 729 if (intrstr == NULL) 730 err(1, "malloc"); 731 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 732 for (nintr = 0, i = 0; i < inamlen; ++i) { 733 if (intrstr[i] == 0) 734 nintr++; 735 } 736 intrname = malloc(nintr * sizeof(char *)); 737 for (i = 0; i < nintr; ++i) { 738 intrname[i] = intrstr; 739 intrstr += strlen(intrstr) + 1; 740 } 741 742 size = nintr * sizeof(*intrcnt); 743 intrcnt = calloc(nintr, sizeof(*intrcnt)); 744 if (intrcnt == NULL) 745 err(1, "malloc"); 746 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 747 748 nwidth = 21; 749 for (i = 0; i < nintr; ++i) { 750 if (nwidth < (int)strlen(intrname[i])) 751 nwidth = (int)strlen(intrname[i]); 752 } 753 if (verbose) nwidth += 12; 754 755 printf("%-*.*s %11s %10s\n", 756 nwidth, nwidth, "interrupt", "total", "rate"); 757 inttotal = 0; 758 for (i = 0; i < nintr; ++i) { 759 int named; 760 char *infop, irqinfo[72]; 761 762 if ((named = strncmp(intrname[i], "irq", 3)) != 0 || 763 intrcnt[i] > 0) { 764 infop = intrname[i]; 765 if (verbose) { 766 ssize_t irq, cpu; 767 768 irq = i % MAX_INTS; 769 cpu = i / MAX_INTS; 770 if (named) { 771 snprintf(irqinfo, sizeof(irqinfo), 772 "irq%-3zd %3zd: %s", 773 irq, cpu, intrname[i]); 774 } else { 775 snprintf(irqinfo, sizeof(irqinfo), 776 "irq%-3zd %3zd: ", irq, cpu); 777 } 778 infop = irqinfo; 779 } 780 printf("%-*.*s %11lu %10lu\n", 781 nwidth, nwidth, infop, 782 intrcnt[i], intrcnt[i] / uptime); 783 } 784 inttotal += intrcnt[i]; 785 } 786 printf("%-*.*s %11llu %10llu\n", 787 nwidth, nwidth, "Total", 788 (long long)inttotal, (long long)(inttotal / uptime)); 789 } 790 791 #define MAX_KMSTATS 1024 792 793 static long 794 cpuagg(size_t *ary) 795 { 796 int i; 797 long ttl; 798 799 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 800 ttl += ary[i]; 801 return(ttl); 802 } 803 804 static void 805 domem(void) 806 { 807 struct malloc_type *ks; 808 int i, j; 809 int first, nkms; 810 long totuse = 0, totfree = 0, totreq = 0; 811 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 812 char buf[1024]; 813 814 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 815 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 816 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 817 &kmemstats[nkms], sizeof(kmemstats[0]))) 818 err(1, "kvm_read(%p)", (void *)kmsp); 819 if (sizeof(buf) != kvm_read(kd, 820 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 821 err(1, "kvm_read(%p)", 822 kmemstats[nkms].ks_shortdesc); 823 buf[sizeof(buf) - 1] = '\0'; 824 kmemstats[nkms].ks_shortdesc = strdup(buf); 825 kmsp = kmemstats[nkms].ks_next; 826 } 827 if (kmsp != NULL) 828 warnx("truncated to the first %d memory types", nkms); 829 830 printf( 831 "\nMemory statistics by type Type Kern\n"); 832 printf( 833 " Type InUse MemUse HighUse Limit Requests Limit Limit\n"); 834 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 835 if (ks->ks_calls == 0) 836 continue; 837 printf("%19s%7ld%7ldK%7ldK%11zuK%10jd%5u%6u", 838 ks->ks_shortdesc, 839 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 840 (ks->ks_maxused + 1023) / 1024, 841 (ks->ks_limit + 1023) / 1024, (intmax_t)ks->ks_calls, 842 ks->ks_limblocks, ks->ks_mapblocks); 843 first = 1; 844 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 845 if ((ks->ks_size & j) == 0) 846 continue; 847 if (first) 848 printf(" "); 849 else 850 printf(","); 851 if(j<1024) 852 printf("%d",j); 853 else 854 printf("%dK",j>>10); 855 first = 0; 856 } 857 printf("\n"); 858 totuse += cpuagg(ks->ks_memuse); 859 totreq += ks->ks_calls; 860 } 861 printf("\nMemory Totals: In Use Free Requests\n"); 862 printf(" %7ldK %6ldK %8ld\n", 863 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 864 } 865 866 static void 867 dozmem(void) 868 { 869 char *buf; 870 size_t bufsize; 871 872 buf = NULL; 873 bufsize = 1024; 874 for (;;) { 875 if ((buf = realloc(buf, bufsize)) == NULL) 876 err(1, "realloc()"); 877 if (sysctlbyname("vm.zone", buf, &bufsize, NULL, 0) == 0) 878 break; 879 if (errno != ENOMEM) 880 err(1, "sysctl()"); 881 bufsize *= 2; 882 } 883 buf[bufsize] = '\0'; /* play it safe */ 884 printf("%s\n\n", buf); 885 free(buf); 886 } 887 888 /* 889 * kread reads something from the kernel, given its nlist index. 890 */ 891 static void 892 kread(int nlx, void *addr, size_t size) 893 { 894 const char *sym; 895 896 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 897 sym = namelist[nlx].n_name; 898 if (*sym == '_') 899 ++sym; 900 errx(1, "symbol %s not defined", sym); 901 } 902 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 903 sym = namelist[nlx].n_name; 904 if (*sym == '_') 905 ++sym; 906 errx(1, "%s: %s", sym, kvm_geterr(kd)); 907 } 908 } 909 910 static void 911 usage(void) 912 { 913 fprintf(stderr, "%s%s", 914 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n", 915 " [-n devs] [disks]\n"); 916 exit(1); 917 } 918