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 1.23 2008/02/19 18:19:15 thomas Exp $ 37 */ 38 39 #include <sys/user.h> 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/uio.h> 43 #include <sys/namei.h> 44 #include <sys/malloc.h> 45 #include <sys/signal.h> 46 #include <sys/fcntl.h> 47 #include <sys/ioctl.h> 48 #include <sys/sysctl.h> 49 #include <sys/vmmeter.h> 50 #include <sys/interrupt.h> 51 52 #include <vm/vm_param.h> 53 54 #include <ctype.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <kinfo.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_BOOTTIME 0 72 { "_boottime", 0, 0, 0, 0 }, 73 #define X_NCHSTATS 1 74 { "_nchstats", 0, 0, 0, 0 }, 75 #define X_KMEMSTATISTICS 2 76 { "_kmemstatistics", 0, 0, 0, 0 }, 77 #define X_ZLIST 3 78 { "_zlist", 0, 0, 0, 0 }, 79 #ifdef notyet 80 #define X_DEFICIT 4 81 { "_deficit", 0, 0, 0, 0 }, 82 #define X_FORKSTAT 5 83 { "_forkstat", 0, 0, 0, 0 }, 84 #define X_REC 6 85 { "_rectime", 0, 0, 0, 0 }, 86 #define X_PGIN 7 87 { "_pgintime", 0, 0, 0, 0 }, 88 #define X_XSTATS 8 89 { "_xstats", 0, 0, 0, 0 }, 90 #define X_END 9 91 #else 92 #define X_END 4 93 #endif 94 { "", 0, 0, 0, 0 }, 95 }; 96 97 struct statinfo cur, last; 98 int num_devices, maxshowdevs; 99 long generation; 100 struct device_selection *dev_select; 101 int num_selected; 102 struct devstat_match *matches; 103 int num_matches = 0; 104 int num_devices_specified, num_selections; 105 long select_generation; 106 char **specified_devices; 107 devstat_select_mode select_mode; 108 109 struct vmmeter vmm, ovmm; 110 struct vmstats vms, ovms; 111 112 int winlines = 20; 113 int nflag = 0; 114 int verbose = 0; 115 116 kvm_t *kd; 117 118 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time; 119 120 #define FORKSTAT 0x01 121 #define INTRSTAT 0x02 122 #define MEMSTAT 0x04 123 #define SUMSTAT 0x08 124 #define TIMESTAT 0x10 125 #define VMSTAT 0x20 126 #define ZMEMSTAT 0x40 127 128 static void cpustats(void); 129 static void dointr(void); 130 static void domem(void); 131 static void dosum(void); 132 static void dozmem(void); 133 static void dovmstat(u_int, int); 134 static void kread(int, void *, size_t); 135 static void usage(void); 136 static char **getdrivedata(char **); 137 static long getuptime(void); 138 static void needhdr(int); 139 static long pct(long, long); 140 141 #ifdef notyet 142 static void dotimes(void); /* Not implemented */ 143 static void doforkst(void); 144 #endif 145 static void printhdr(void); 146 static void devstats(void); 147 148 int 149 main(int argc, char **argv) 150 { 151 int c, todo; 152 u_int interval; /* milliseconds */ 153 int reps; 154 char *memf, *nlistf; 155 char errbuf[_POSIX2_LINE_MAX]; 156 157 memf = nlistf = NULL; 158 interval = reps = todo = 0; 159 maxshowdevs = 2; 160 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) { 161 switch (c) { 162 case 'c': 163 reps = atoi(optarg); 164 break; 165 case 'f': 166 #ifdef notyet 167 todo |= FORKSTAT; 168 #else 169 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 170 #endif 171 break; 172 case 'i': 173 todo |= INTRSTAT; 174 break; 175 case 'M': 176 memf = optarg; 177 break; 178 case 'm': 179 todo |= MEMSTAT; 180 break; 181 case 'N': 182 nlistf = optarg; 183 break; 184 case 'n': 185 nflag = 1; 186 maxshowdevs = atoi(optarg); 187 if (maxshowdevs < 0) 188 errx(1, "number of devices %d is < 0", 189 maxshowdevs); 190 break; 191 case 'p': 192 if (buildmatch(optarg, &matches, &num_matches) != 0) 193 errx(1, "%s", devstat_errbuf); 194 break; 195 case 's': 196 todo |= SUMSTAT; 197 break; 198 case 't': 199 #ifdef notyet 200 todo |= TIMESTAT; 201 #else 202 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 203 #endif 204 break; 205 case 'v': 206 ++verbose; 207 break; 208 case 'w': 209 interval = (u_int)(strtod(optarg, NULL) * 1000.0); 210 break; 211 case 'z': 212 todo |= ZMEMSTAT; 213 break; 214 default: 215 usage(); 216 } 217 } 218 argc -= optind; 219 argv += optind; 220 221 if (todo == 0) 222 todo = VMSTAT; 223 224 /* 225 * Discard setgid privileges if not the running kernel so that bad 226 * guys can't print interesting stuff from kernel memory. 227 */ 228 if (nlistf != NULL || memf != NULL) 229 setgid(getgid()); 230 231 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 232 if (kd == 0) 233 errx(1, "kvm_openfiles: %s", errbuf); 234 235 if ((c = kvm_nlist(kd, namelist)) != 0) { 236 if (c > 0) { 237 warnx("undefined symbols:"); 238 for (c = 0; c < (int)__arysize(namelist); c++) 239 if (namelist[c].n_type == 0) 240 fprintf(stderr, " %s", 241 namelist[c].n_name); 242 fputc('\n', stderr); 243 } else 244 warnx("kvm_nlist: %s", kvm_geterr(kd)); 245 exit(1); 246 } 247 248 if (todo & VMSTAT) { 249 struct winsize winsize; 250 251 /* 252 * Make sure that the userland devstat version matches the 253 * kernel devstat version. If not, exit and print a 254 * message informing the user of his mistake. 255 */ 256 if (checkversion() < 0) 257 errx(1, "%s", devstat_errbuf); 258 259 260 argv = getdrivedata(argv); 261 winsize.ws_row = 0; 262 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 263 if (winsize.ws_row > 0) 264 winlines = winsize.ws_row; 265 266 } 267 268 #define BACKWARD_COMPATIBILITY 269 #ifdef BACKWARD_COMPATIBILITY 270 if (*argv) { 271 interval = (u_int)(strtod(*argv, NULL) * 1000.0); 272 if (*++argv) 273 reps = atoi(*argv); 274 } 275 #endif 276 277 if (interval) { 278 if (!reps) 279 reps = -1; 280 } else if (reps) { 281 interval = 1000; 282 } 283 284 #ifdef notyet 285 if (todo & FORKSTAT) 286 doforkst(); 287 #endif 288 if (todo & MEMSTAT) 289 domem(); 290 if (todo & ZMEMSTAT) 291 dozmem(); 292 if (todo & SUMSTAT) 293 dosum(); 294 #ifdef notyet 295 if (todo & TIMESTAT) 296 dotimes(); 297 #endif 298 if (todo & INTRSTAT) 299 dointr(); 300 if (todo & VMSTAT) 301 dovmstat(interval, reps); 302 exit(0); 303 } 304 305 static char ** 306 getdrivedata(char **argv) 307 { 308 if ((num_devices = getnumdevs()) < 0) 309 errx(1, "%s", devstat_errbuf); 310 311 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 312 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 313 bzero(cur.dinfo, sizeof(struct devinfo)); 314 bzero(last.dinfo, sizeof(struct devinfo)); 315 316 if (getdevs(&cur) == -1) 317 errx(1, "%s", devstat_errbuf); 318 319 num_devices = cur.dinfo->numdevs; 320 generation = cur.dinfo->generation; 321 322 specified_devices = (char **)malloc(sizeof(char *)); 323 for (num_devices_specified = 0; *argv; ++argv) { 324 if (isdigit(**argv)) 325 break; 326 num_devices_specified++; 327 specified_devices = (char **)realloc(specified_devices, 328 sizeof(char *) * 329 num_devices_specified); 330 specified_devices[num_devices_specified - 1] = *argv; 331 } 332 dev_select = NULL; 333 334 if (nflag == 0 && maxshowdevs < num_devices_specified) 335 maxshowdevs = num_devices_specified; 336 337 /* 338 * People are generally only interested in disk statistics when 339 * they're running vmstat. So, that's what we're going to give 340 * them if they don't specify anything by default. We'll also give 341 * them any other random devices in the system so that we get to 342 * maxshowdevs devices, if that many devices exist. If the user 343 * specifies devices on the command line, either through a pattern 344 * match or by naming them explicitly, we will give the user only 345 * those devices. 346 */ 347 if ((num_devices_specified == 0) && (num_matches == 0)) { 348 if (buildmatch("da", &matches, &num_matches) != 0) 349 errx(1, "%s", devstat_errbuf); 350 351 select_mode = DS_SELECT_ADD; 352 } else 353 select_mode = DS_SELECT_ONLY; 354 355 /* 356 * At this point, selectdevs will almost surely indicate that the 357 * device list has changed, so we don't look for return values of 0 358 * or 1. If we get back -1, though, there is an error. 359 */ 360 if (selectdevs(&dev_select, &num_selected, &num_selections, 361 &select_generation, generation, cur.dinfo->devices, 362 num_devices, matches, num_matches, specified_devices, 363 num_devices_specified, select_mode, 364 maxshowdevs, 0) == -1) 365 errx(1, "%s", devstat_errbuf); 366 367 return(argv); 368 } 369 370 static long 371 getuptime(void) 372 { 373 static time_t now, boottime; 374 time_t uptime; 375 376 if (boottime == 0) 377 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 378 time(&now); 379 uptime = now - boottime; 380 if (uptime <= 0 || uptime > 60*60*24*365*10) 381 errx(1, "time makes no sense; namelist must be wrong"); 382 return(uptime); 383 } 384 385 int hdrcnt; 386 387 static void 388 dovmstat(u_int interval, int reps) 389 { 390 struct vmtotal total; 391 struct devinfo *tmp_dinfo; 392 size_t vmm_size = sizeof(vmm); 393 size_t vms_size = sizeof(vms); 394 size_t vmt_size = sizeof(total); 395 int initial = 1; 396 397 signal(SIGCONT, needhdr); 398 399 for (hdrcnt = 1;;) { 400 if (!--hdrcnt) 401 printhdr(); 402 if (kinfo_get_sched_cputime(&cp_time)) 403 err(1, "kinfo_get_sched_cputime"); 404 405 tmp_dinfo = last.dinfo; 406 last.dinfo = cur.dinfo; 407 cur.dinfo = tmp_dinfo; 408 last.busy_time = cur.busy_time; 409 410 /* 411 * Here what we want to do is refresh our device stats. 412 * getdevs() returns 1 when the device list has changed. 413 * If the device list has changed, we want to go through 414 * the selection process again, in case a device that we 415 * were previously displaying has gone away. 416 */ 417 switch (getdevs(&cur)) { 418 case -1: 419 errx(1, "%s", devstat_errbuf); 420 break; 421 case 1: { 422 int retval; 423 424 num_devices = cur.dinfo->numdevs; 425 generation = cur.dinfo->generation; 426 427 retval = selectdevs(&dev_select, &num_selected, 428 &num_selections, &select_generation, 429 generation, cur.dinfo->devices, 430 num_devices, matches, num_matches, 431 specified_devices, 432 num_devices_specified, select_mode, 433 maxshowdevs, 0); 434 switch (retval) { 435 case -1: 436 errx(1, "%s", devstat_errbuf); 437 break; 438 case 1: 439 printhdr(); 440 break; 441 default: 442 break; 443 } 444 } 445 default: 446 break; 447 } 448 449 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 450 perror("sysctlbyname: vm.vmstats"); 451 exit(1); 452 } 453 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 454 perror("sysctlbyname: vm.vmmeter"); 455 exit(1); 456 } 457 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 458 perror("sysctlbyname: vm.vmtotal"); 459 exit(1); 460 } 461 printf("%2ld %1ld %1ld", 462 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 463 464 #define vmstat_pgtok(a) \ 465 (intmax_t)(((intmax_t)(a) * vms.v_page_size) >> 10) 466 #define rate(x) \ 467 (intmax_t)(initial ? (x) : ((intmax_t)(x) * 1000 + interval / 2) \ 468 / interval) 469 470 printf(" %7jd %6jd ", 471 vmstat_pgtok(total.t_avm), 472 vmstat_pgtok(total.t_free)); 473 printf("%4ju ", 474 rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 475 printf("%3ju ", 476 rate(vmm.v_reactivated - ovmm.v_reactivated)); 477 printf("%3ju ", 478 rate(vmm.v_swapin + vmm.v_vnodein - 479 (ovmm.v_swapin + ovmm.v_vnodein))); 480 printf("%3ju ", 481 rate(vmm.v_swapout + vmm.v_vnodeout - 482 (ovmm.v_swapout + ovmm.v_vnodeout))); 483 printf("%3ju ", 484 rate(vmm.v_tfree - ovmm.v_tfree)); 485 printf("%3ju ", 486 rate(vmm.v_pdpages - ovmm.v_pdpages)); 487 devstats(); 488 printf("%4ju %4ju %3ju ", 489 rate(vmm.v_intr - ovmm.v_intr), 490 rate(vmm.v_syscall - ovmm.v_syscall), 491 rate(vmm.v_swtch - ovmm.v_swtch)); 492 cpustats(); 493 printf("\n"); 494 fflush(stdout); 495 if (reps >= 0 && --reps <= 0) 496 break; 497 ovmm = vmm; 498 usleep(interval * 1000); 499 initial = 0; 500 } 501 } 502 503 static void 504 printhdr(void) 505 { 506 int i, num_shown; 507 508 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 509 printf(" procs memory page%*s", 19, ""); 510 if (num_shown > 1) 511 printf(" disks %*s", num_shown * 4 - 7, ""); 512 else if (num_shown == 1) 513 printf("disk"); 514 printf(" faults cpu\n"); 515 printf(" r b w avm fre flt re pi po fr sr "); 516 for (i = 0; i < num_devices; i++) 517 if ((dev_select[i].selected) 518 && (dev_select[i].selected <= maxshowdevs)) 519 printf("%c%c%d ", dev_select[i].device_name[0], 520 dev_select[i].device_name[1], 521 dev_select[i].unit_number); 522 printf(" in sy cs us sy id\n"); 523 hdrcnt = winlines - 2; 524 } 525 526 /* 527 * Force a header to be prepended to the next output. 528 */ 529 static void 530 needhdr(__unused int signo) 531 { 532 533 hdrcnt = 1; 534 } 535 536 static long 537 pct(long top, long bot) 538 { 539 long ans; 540 541 if (bot == 0) 542 return(0); 543 ans = (quad_t)top * 100 / bot; 544 return (ans); 545 } 546 547 #define PCT(top, bot) pct((long)(top), (long)(bot)) 548 549 static void 550 dosum(void) 551 { 552 struct nchstats *nch_tmp, nchstats; 553 size_t vms_size = sizeof(vms); 554 size_t vmm_size = sizeof(vmm); 555 int cpucnt; 556 u_long nchtotal; 557 u_long nchpathtotal; 558 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 559 560 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 561 perror("sysctlbyname: vm.vmstats"); 562 exit(1); 563 } 564 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 565 perror("sysctlbyname: vm.vmstats"); 566 exit(1); 567 } 568 printf("%9u cpu context switches\n", vmm.v_swtch); 569 printf("%9u device interrupts\n", vmm.v_intr); 570 printf("%9u software interrupts\n", vmm.v_soft); 571 printf("%9u traps\n", vmm.v_trap); 572 printf("%9u system calls\n", vmm.v_syscall); 573 printf("%9u kernel threads created\n", vmm.v_kthreads); 574 printf("%9u fork() calls\n", vmm.v_forks); 575 printf("%9u vfork() calls\n", vmm.v_vforks); 576 printf("%9u rfork() calls\n", vmm.v_rforks); 577 printf("%9u exec() calls\n", vmm.v_exec); 578 printf("%9u swap pager pageins\n", vmm.v_swapin); 579 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 580 printf("%9u swap pager pageouts\n", vmm.v_swapout); 581 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 582 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 583 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 584 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 585 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 586 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 587 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 588 printf("%9u pages reactivated\n", vmm.v_reactivated); 589 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 590 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 591 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 592 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 593 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 594 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 595 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 596 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 597 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 598 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 599 printf("%9u pages freed\n", vmm.v_tfree); 600 printf("%9u pages freed by daemon\n", vmm.v_dfree); 601 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 602 printf("%9u pages active\n", vms.v_active_count); 603 printf("%9u pages inactive\n", vms.v_inactive_count); 604 printf("%9u pages in VM cache\n", vms.v_cache_count); 605 printf("%9u pages wired down\n", vms.v_wire_count); 606 printf("%9u pages free\n", vms.v_free_count); 607 printf("%9u bytes per page\n", vms.v_page_size); 608 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb); 609 610 if ((nch_tmp = malloc(nch_size)) == NULL) { 611 perror("malloc"); 612 exit(1); 613 } else { 614 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 615 perror("sysctlbyname vfs.cache.nchstats"); 616 free(nch_tmp); 617 exit(1); 618 } else { 619 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 620 perror("realloc"); 621 exit(1); 622 } 623 } 624 } 625 626 cpucnt = nch_size / sizeof(struct nchstats); 627 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 628 629 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 630 nchstats.ncs_badhits + nchstats.ncs_falsehits + 631 nchstats.ncs_miss; 632 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss; 633 printf("%9ld total path lookups\n", nchpathtotal); 634 printf("%9ld total component lookups\n", nchtotal); 635 printf( 636 "%9s cache hits (%ld%% pos + %ld%% neg)\n", 637 "", PCT(nchstats.ncs_goodhits, nchtotal), 638 PCT(nchstats.ncs_neghits, nchtotal)); 639 printf("%9s deletions %ld%%, falsehits %ld%%\n", "", 640 PCT(nchstats.ncs_badhits, nchtotal), 641 PCT(nchstats.ncs_falsehits, nchtotal)); 642 free(nch_tmp); 643 } 644 645 #ifdef notyet 646 void 647 doforkst(void) 648 { 649 struct forkstat fks; 650 651 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 652 printf("%d forks, %d pages, average %.2f\n", 653 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 654 printf("%d vforks, %d pages, average %.2f\n", 655 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 656 } 657 #endif 658 659 static void 660 devstats(void) 661 { 662 int dn; 663 long double transfers_per_second; 664 long double busy_seconds; 665 666 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 667 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 668 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 669 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 670 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 671 old_cp_time = cp_time; 672 673 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 674 675 for (dn = 0; dn < num_devices; dn++) { 676 int di; 677 678 if ((dev_select[dn].selected == 0) 679 || (dev_select[dn].selected > maxshowdevs)) 680 continue; 681 682 di = dev_select[dn].position; 683 684 if (compute_stats(&cur.dinfo->devices[di], 685 &last.dinfo->devices[di], busy_seconds, 686 NULL, NULL, NULL, 687 NULL, &transfers_per_second, NULL, 688 NULL, NULL) != 0) 689 errx(1, "%s", devstat_errbuf); 690 691 printf("%3.0Lf ", transfers_per_second); 692 } 693 } 694 695 static void 696 cpustats(void) 697 { 698 uint64_t total; 699 double totusage; 700 701 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 702 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 703 704 if (total) 705 totusage = 100.0 / total; 706 else 707 totusage = 0; 708 printf("%2.0f ", 709 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 710 printf("%2.0f ", 711 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 712 printf("%2.0f", 713 diff_cp_time.cp_idle * totusage); 714 } 715 716 static void 717 dointr(void) 718 { 719 u_long *intrcnt, uptime; 720 u_int64_t inttotal; 721 size_t nintr, inamlen, i, size; 722 int nwidth; 723 char *intrstr; 724 char **intrname; 725 726 uptime = getuptime(); 727 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 728 errx(1, "sysctlbyname"); 729 intrstr = malloc(inamlen); 730 if (intrstr == NULL) 731 err(1, "malloc"); 732 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 733 for (nintr = 0, i = 0; i < inamlen; ++i) { 734 if (intrstr[i] == 0) 735 nintr++; 736 } 737 intrname = malloc(nintr * sizeof(char *)); 738 for (i = 0; i < nintr; ++i) { 739 intrname[i] = intrstr; 740 intrstr += strlen(intrstr) + 1; 741 } 742 743 size = nintr * sizeof(*intrcnt); 744 intrcnt = calloc(nintr, sizeof(*intrcnt)); 745 if (intrcnt == NULL) 746 err(1, "malloc"); 747 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 748 749 nwidth = 21; 750 for (i = 0; i < nintr; ++i) { 751 if (nwidth < (int)strlen(intrname[i])) 752 nwidth = (int)strlen(intrname[i]); 753 } 754 if (verbose) nwidth += 12; 755 756 printf("%-*.*s %11s %10s\n", 757 nwidth, nwidth, "interrupt", "total", "rate"); 758 inttotal = 0; 759 for (i = 0; i < nintr; ++i) { 760 int named; 761 char *infop, irqinfo[72]; 762 763 if ((named = strncmp(intrname[i], "irq", 3)) != 0 || 764 intrcnt[i] > 0) { 765 infop = intrname[i]; 766 if (verbose) { 767 ssize_t irq, cpu; 768 769 irq = i % MAX_INTS; 770 cpu = i / MAX_INTS; 771 if (named) { 772 snprintf(irqinfo, sizeof(irqinfo), 773 "irq%-3zd %3zd: %s", 774 irq, cpu, intrname[i]); 775 } else { 776 snprintf(irqinfo, sizeof(irqinfo), 777 "irq%-3zd %3zd: ", irq, cpu); 778 } 779 infop = irqinfo; 780 } 781 printf("%-*.*s %11lu %10lu\n", 782 nwidth, nwidth, infop, 783 intrcnt[i], intrcnt[i] / uptime); 784 } 785 inttotal += intrcnt[i]; 786 } 787 printf("%-*.*s %11llu %10llu\n", 788 nwidth, nwidth, "Total", 789 (long long)inttotal, (long long)(inttotal / uptime)); 790 } 791 792 #define MAX_KMSTATS 1024 793 794 static long 795 cpuagg(size_t *ary) 796 { 797 int i; 798 long ttl; 799 800 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 801 ttl += ary[i]; 802 return(ttl); 803 } 804 805 static void 806 domem(void) 807 { 808 struct malloc_type *ks; 809 int i, j; 810 int first, nkms; 811 long totuse = 0, totfree = 0, totreq = 0; 812 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 813 char buf[1024]; 814 815 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 816 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 817 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 818 &kmemstats[nkms], sizeof(kmemstats[0]))) 819 err(1, "kvm_read(%p)", (void *)kmsp); 820 if (sizeof(buf) != kvm_read(kd, 821 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 822 err(1, "kvm_read(%p)", 823 kmemstats[nkms].ks_shortdesc); 824 buf[sizeof(buf) - 1] = '\0'; 825 kmemstats[nkms].ks_shortdesc = strdup(buf); 826 kmsp = kmemstats[nkms].ks_next; 827 } 828 if (kmsp != NULL) 829 warnx("truncated to the first %d memory types", nkms); 830 831 printf( 832 "\nMemory statistics by type Type Kern\n"); 833 printf( 834 " Type InUse MemUse HighUse Limit Requests Limit Limit\n"); 835 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 836 if (ks->ks_calls == 0) 837 continue; 838 printf("%19s%7ld%7ldK%7ldK%11zuK%10jd%5u%6u", 839 ks->ks_shortdesc, 840 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 841 (ks->ks_maxused + 1023) / 1024, 842 (ks->ks_limit + 1023) / 1024, (intmax_t)ks->ks_calls, 843 ks->ks_limblocks, ks->ks_mapblocks); 844 first = 1; 845 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 846 if ((ks->ks_size & j) == 0) 847 continue; 848 if (first) 849 printf(" "); 850 else 851 printf(","); 852 if(j<1024) 853 printf("%d",j); 854 else 855 printf("%dK",j>>10); 856 first = 0; 857 } 858 printf("\n"); 859 totuse += cpuagg(ks->ks_memuse); 860 totreq += ks->ks_calls; 861 } 862 printf("\nMemory Totals: In Use Free Requests\n"); 863 printf(" %7ldK %6ldK %8ld\n", 864 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 865 } 866 867 static void 868 dozmem(void) 869 { 870 char *buf; 871 size_t bufsize; 872 873 buf = NULL; 874 bufsize = 1024; 875 for (;;) { 876 if ((buf = realloc(buf, bufsize)) == NULL) 877 err(1, "realloc()"); 878 if (sysctlbyname("vm.zone", buf, &bufsize, NULL, 0) == 0) 879 break; 880 if (errno != ENOMEM) 881 err(1, "sysctl()"); 882 bufsize *= 2; 883 } 884 buf[bufsize] = '\0'; /* play it safe */ 885 printf("%s\n\n", buf); 886 free(buf); 887 } 888 889 /* 890 * kread reads something from the kernel, given its nlist index. 891 */ 892 static void 893 kread(int nlx, void *addr, size_t size) 894 { 895 const 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) != (ssize_t)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 static void 912 usage(void) 913 { 914 fprintf(stderr, "%s%s", 915 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n", 916 " [-n devs] [disks]\n"); 917 exit(1); 918 } 919