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 const 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 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/param.h> 50 #include <sys/time.h> 51 #include <sys/proc.h> 52 #include <sys/uio.h> 53 #include <sys/namei.h> 54 #include <sys/malloc.h> 55 #include <sys/signal.h> 56 #include <sys/fcntl.h> 57 #include <sys/ioctl.h> 58 #include <sys/resource.h> 59 #include <sys/sysctl.h> 60 #include <sys/vmmeter.h> 61 62 #include <vm/vm_param.h> 63 64 #include <ctype.h> 65 #include <devstat.h> 66 #include <err.h> 67 #include <errno.h> 68 #include <kvm.h> 69 #include <limits.h> 70 #include <nlist.h> 71 #include <paths.h> 72 #include <stdio.h> 73 #include <stdlib.h> 74 #include <string.h> 75 #include <sysexits.h> 76 #include <time.h> 77 #include <unistd.h> 78 79 static char da[] = "da"; 80 81 static struct nlist namelist[] = { 82 #define X_CPTIME 0 83 { "_cp_time" }, 84 #define X_SUM 1 85 { "_cnt" }, 86 #define X_BOOTTIME 2 87 { "_boottime" }, 88 #define X_HZ 3 89 { "_hz" }, 90 #define X_STATHZ 4 91 { "_stathz" }, 92 #define X_NCHSTATS 5 93 { "_nchstats" }, 94 #define X_INTRNAMES 6 95 { "_intrnames" }, 96 #define X_EINTRNAMES 7 97 { "_eintrnames" }, 98 #define X_INTRCNT 8 99 { "_intrcnt" }, 100 #define X_EINTRCNT 9 101 { "_eintrcnt" }, 102 #define X_KMEMSTATS 10 103 { "_kmemstatistics" }, 104 #define X_KMEMZONES 11 105 { "_kmemzones" }, 106 #ifdef notyet 107 #define X_DEFICIT XXX 108 { "_deficit" }, 109 #define X_REC XXX 110 { "_rectime" }, 111 #define X_PGIN XXX 112 { "_pgintime" }, 113 #define X_XSTATS XXX 114 { "_xstats" }, 115 #define X_END XXX 116 #else 117 #define X_END 12 118 #endif 119 { "" }, 120 }; 121 122 static struct statinfo cur, last; 123 static int num_devices, maxshowdevs; 124 static long generation; 125 static struct device_selection *dev_select; 126 static int num_selected; 127 static struct devstat_match *matches; 128 static int num_matches = 0; 129 static int num_devices_specified, num_selections; 130 static long select_generation; 131 static char **specified_devices; 132 static devstat_select_mode select_mode; 133 134 static struct vmmeter sum, osum; 135 136 static int winlines = 20; 137 static int aflag; 138 static int nflag; 139 140 static kvm_t *kd; 141 142 #define FORKSTAT 0x01 143 #define INTRSTAT 0x02 144 #define MEMSTAT 0x04 145 #define SUMSTAT 0x08 146 #define TIMESTAT 0x10 147 #define VMSTAT 0x20 148 #define ZMEMSTAT 0x40 149 150 static void cpustats(void); 151 static void devstats(void); 152 static void doforkst(void); 153 static void domem(void); 154 static void dointr(void); 155 static void dosum(void); 156 static void dosysctl(const char *); 157 static void dovmstat(unsigned int, int); 158 static void dozmem(void); 159 static void kread(int, void *, size_t); 160 static void kreado(int, void *, size_t, size_t); 161 static char *kgetstr(const char *); 162 static void needhdr(int); 163 static void printhdr(void); 164 static void usage(void); 165 166 static long pct(long, long); 167 static long getuptime(void); 168 169 static char **getdrivedata(char **); 170 171 int 172 main(int argc, char *argv[]) 173 { 174 int c, todo; 175 unsigned int interval; 176 int reps; 177 char *memf, *nlistf; 178 char errbuf[_POSIX2_LINE_MAX]; 179 180 memf = nlistf = NULL; 181 interval = reps = todo = 0; 182 maxshowdevs = 2; 183 while ((c = getopt(argc, argv, "ac:fiM:mN:n:p:stw:z")) != -1) { 184 switch (c) { 185 case 'a': 186 aflag++; 187 break; 188 case 'c': 189 reps = atoi(optarg); 190 break; 191 case 'f': 192 todo |= FORKSTAT; 193 break; 194 case 'i': 195 todo |= INTRSTAT; 196 break; 197 case 'M': 198 memf = optarg; 199 break; 200 case 'm': 201 todo |= MEMSTAT; 202 break; 203 case 'N': 204 nlistf = optarg; 205 break; 206 case 'n': 207 nflag = 1; 208 maxshowdevs = atoi(optarg); 209 if (maxshowdevs < 0) 210 errx(1, "number of devices %d is < 0", 211 maxshowdevs); 212 break; 213 case 'p': 214 if (devstat_buildmatch(optarg, &matches, &num_matches) != 0) 215 errx(1, "%s", devstat_errbuf); 216 break; 217 case 's': 218 todo |= SUMSTAT; 219 break; 220 case 't': 221 #ifdef notyet 222 todo |= TIMESTAT; 223 #else 224 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 225 #endif 226 break; 227 case 'w': 228 interval = atoi(optarg); 229 break; 230 case 'z': 231 todo |= ZMEMSTAT; 232 break; 233 case '?': 234 default: 235 usage(); 236 } 237 } 238 argc -= optind; 239 argv += optind; 240 241 if (todo == 0) 242 todo = VMSTAT; 243 244 if (memf != NULL) { 245 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 246 if (kd == NULL) 247 errx(1, "kvm_openfiles: %s", errbuf); 248 } 249 250 if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) { 251 if (c > 0) { 252 warnx("undefined symbols:"); 253 for (c = 0; 254 c < (int)(sizeof(namelist)/sizeof(namelist[0])); 255 c++) 256 if (namelist[c].n_type == 0) 257 (void)fprintf(stderr, " %s", 258 namelist[c].n_name); 259 (void)fputc('\n', stderr); 260 } else 261 warnx("kvm_nlist: %s", kvm_geterr(kd)); 262 exit(1); 263 } 264 265 if (todo & VMSTAT) { 266 struct winsize winsize; 267 268 /* 269 * Make sure that the userland devstat version matches the 270 * kernel devstat version. If not, exit and print a 271 * message informing the user of his mistake. 272 */ 273 if (devstat_checkversion(NULL) < 0) 274 errx(1, "%s", devstat_errbuf); 275 276 277 argv = getdrivedata(argv); 278 winsize.ws_row = 0; 279 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 280 if (winsize.ws_row > 0) 281 winlines = winsize.ws_row; 282 283 } 284 285 #define BACKWARD_COMPATIBILITY 286 #ifdef BACKWARD_COMPATIBILITY 287 if (*argv) { 288 interval = atoi(*argv); 289 if (*++argv) 290 reps = atoi(*argv); 291 } 292 #endif 293 294 if (interval) { 295 if (!reps) 296 reps = -1; 297 } else if (reps) 298 interval = 1; 299 300 if (todo & FORKSTAT) 301 doforkst(); 302 if (todo & MEMSTAT) 303 domem(); 304 if (todo & ZMEMSTAT) 305 dozmem(); 306 if (todo & SUMSTAT) 307 dosum(); 308 #ifdef notyet 309 if (todo & TIMESTAT) 310 dotimes(); 311 #endif 312 if (todo & INTRSTAT) 313 dointr(); 314 if (todo & VMSTAT) 315 dovmstat(interval, reps); 316 exit(0); 317 } 318 319 static int 320 mysysctl(const char *name, void *oldp, size_t *oldlenp, 321 void *newp, size_t newlen) 322 { 323 int error; 324 325 error = sysctlbyname(name, oldp, oldlenp, newp, newlen); 326 if (error != 0 && errno != ENOMEM) 327 err(1, "sysctl(%s)", name); 328 return (error); 329 } 330 331 static char ** 332 getdrivedata(char **argv) 333 { 334 if ((num_devices = devstat_getnumdevs(NULL)) < 0) 335 errx(1, "%s", devstat_errbuf); 336 337 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 338 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 339 bzero(cur.dinfo, sizeof(struct devinfo)); 340 bzero(last.dinfo, sizeof(struct devinfo)); 341 342 if (devstat_getdevs(NULL, &cur) == -1) 343 errx(1, "%s", devstat_errbuf); 344 345 num_devices = cur.dinfo->numdevs; 346 generation = cur.dinfo->generation; 347 348 specified_devices = (char **)malloc(sizeof(char *)); 349 for (num_devices_specified = 0; *argv; ++argv) { 350 if (isdigit(**argv)) 351 break; 352 num_devices_specified++; 353 specified_devices = (char **)realloc(specified_devices, 354 sizeof(char *) * 355 num_devices_specified); 356 specified_devices[num_devices_specified - 1] = *argv; 357 } 358 dev_select = NULL; 359 360 if (nflag == 0 && maxshowdevs < num_devices_specified) 361 maxshowdevs = num_devices_specified; 362 363 /* 364 * People are generally only interested in disk statistics when 365 * they're running vmstat. So, that's what we're going to give 366 * them if they don't specify anything by default. We'll also give 367 * them any other random devices in the system so that we get to 368 * maxshowdevs devices, if that many devices exist. If the user 369 * specifies devices on the command line, either through a pattern 370 * match or by naming them explicitly, we will give the user only 371 * those devices. 372 */ 373 if ((num_devices_specified == 0) && (num_matches == 0)) { 374 if (devstat_buildmatch(da, &matches, &num_matches) != 0) 375 errx(1, "%s", devstat_errbuf); 376 377 select_mode = DS_SELECT_ADD; 378 } else 379 select_mode = DS_SELECT_ONLY; 380 381 /* 382 * At this point, selectdevs will almost surely indicate that the 383 * device list has changed, so we don't look for return values of 0 384 * or 1. If we get back -1, though, there is an error. 385 */ 386 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, 387 &select_generation, generation, cur.dinfo->devices, 388 num_devices, matches, num_matches, specified_devices, 389 num_devices_specified, select_mode, 390 maxshowdevs, 0) == -1) 391 errx(1, "%s", devstat_errbuf); 392 393 return(argv); 394 } 395 396 static long 397 getuptime(void) 398 { 399 static struct timeval boottime; 400 static time_t now; 401 time_t uptime; 402 403 if (boottime.tv_sec == 0) { 404 if (kd != NULL) { 405 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 406 } else { 407 size_t size; 408 409 size = sizeof(boottime); 410 mysysctl("kern.boottime", &boottime, &size, NULL, 0); 411 if (size != sizeof(boottime)) 412 errx(1, "kern.boottime size mismatch"); 413 } 414 } 415 (void)time(&now); 416 uptime = now - boottime.tv_sec; 417 if (uptime <= 0 || uptime > 60*60*24*365*10) 418 errx(1, "time makes no sense; namelist must be wrong"); 419 return(uptime); 420 } 421 422 static void 423 fill_vmmeter(struct vmmeter *vmmp) 424 { 425 if (kd != NULL) { 426 kread(X_SUM, vmmp, sizeof(*vmmp)); 427 } else { 428 size_t size = sizeof(unsigned int); 429 #define GET_VM_STATS(cat, name) \ 430 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0) 431 /* sys */ 432 GET_VM_STATS(sys, v_swtch); 433 GET_VM_STATS(sys, v_trap); 434 GET_VM_STATS(sys, v_syscall); 435 GET_VM_STATS(sys, v_intr); 436 GET_VM_STATS(sys, v_soft); 437 438 /* vm */ 439 GET_VM_STATS(vm, v_vm_faults); 440 GET_VM_STATS(vm, v_cow_faults); 441 GET_VM_STATS(vm, v_cow_optim); 442 GET_VM_STATS(vm, v_zfod); 443 GET_VM_STATS(vm, v_ozfod); 444 GET_VM_STATS(vm, v_swapin); 445 GET_VM_STATS(vm, v_swapout); 446 GET_VM_STATS(vm, v_swappgsin); 447 GET_VM_STATS(vm, v_swappgsout); 448 GET_VM_STATS(vm, v_vnodein); 449 GET_VM_STATS(vm, v_vnodeout); 450 GET_VM_STATS(vm, v_vnodepgsin); 451 GET_VM_STATS(vm, v_vnodepgsout); 452 GET_VM_STATS(vm, v_intrans); 453 GET_VM_STATS(vm, v_reactivated); 454 GET_VM_STATS(vm, v_pdwakeups); 455 GET_VM_STATS(vm, v_pdpages); 456 GET_VM_STATS(vm, v_dfree); 457 GET_VM_STATS(vm, v_pfree); 458 GET_VM_STATS(vm, v_tfree); 459 GET_VM_STATS(vm, v_page_size); 460 GET_VM_STATS(vm, v_page_count); 461 GET_VM_STATS(vm, v_free_reserved); 462 GET_VM_STATS(vm, v_free_target); 463 GET_VM_STATS(vm, v_free_min); 464 GET_VM_STATS(vm, v_free_count); 465 GET_VM_STATS(vm, v_wire_count); 466 GET_VM_STATS(vm, v_active_count); 467 GET_VM_STATS(vm, v_inactive_target); 468 GET_VM_STATS(vm, v_inactive_count); 469 GET_VM_STATS(vm, v_cache_count); 470 GET_VM_STATS(vm, v_cache_min); 471 GET_VM_STATS(vm, v_cache_max); 472 GET_VM_STATS(vm, v_pageout_free_min); 473 GET_VM_STATS(vm, v_interrupt_free_min); 474 /*GET_VM_STATS(vm, v_free_severe);*/ 475 GET_VM_STATS(vm, v_forks); 476 GET_VM_STATS(vm, v_vforks); 477 GET_VM_STATS(vm, v_rforks); 478 GET_VM_STATS(vm, v_kthreads); 479 GET_VM_STATS(vm, v_forkpages); 480 GET_VM_STATS(vm, v_vforkpages); 481 GET_VM_STATS(vm, v_rforkpages); 482 GET_VM_STATS(vm, v_kthreadpages); 483 #undef GET_VM_STATS 484 } 485 } 486 487 static void 488 fill_vmtotal(struct vmtotal *vmtp) 489 { 490 if (kd != NULL) { 491 /* XXX fill vmtp */ 492 errx(1, "not implemented"); 493 } else { 494 size_t size = sizeof(*vmtp); 495 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0); 496 if (size != sizeof(*vmtp)) 497 errx(1, "vm.total size mismatch"); 498 } 499 } 500 501 static int hz, hdrcnt; 502 503 static void 504 dovmstat(unsigned int interval, int reps) 505 { 506 struct vmtotal total; 507 time_t uptime, halfuptime; 508 struct devinfo *tmp_dinfo; 509 size_t size; 510 511 uptime = getuptime(); 512 halfuptime = uptime / 2; 513 (void)signal(SIGCONT, needhdr); 514 515 if (kd != NULL) { 516 if (namelist[X_STATHZ].n_type != 0 && 517 namelist[X_STATHZ].n_value != 0) 518 kread(X_STATHZ, &hz, sizeof(hz)); 519 if (!hz) 520 kread(X_HZ, &hz, sizeof(hz)); 521 } else { 522 struct clockinfo clockrate; 523 524 size = sizeof(clockrate); 525 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0); 526 if (size != sizeof(clockrate)) 527 errx(1, "clockrate size mismatch"); 528 hz = clockrate.hz; 529 } 530 531 for (hdrcnt = 1;;) { 532 if (!--hdrcnt) 533 printhdr(); 534 if (kd != NULL) { 535 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 536 } else { 537 size = sizeof(cur.cp_time); 538 mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0); 539 if (size != sizeof(cur.cp_time)) 540 errx(1, "cp_time size mismatch"); 541 } 542 543 tmp_dinfo = last.dinfo; 544 last.dinfo = cur.dinfo; 545 cur.dinfo = tmp_dinfo; 546 last.snap_time = cur.snap_time; 547 548 /* 549 * Here what we want to do is refresh our device stats. 550 * getdevs() returns 1 when the device list has changed. 551 * If the device list has changed, we want to go through 552 * the selection process again, in case a device that we 553 * were previously displaying has gone away. 554 */ 555 switch (devstat_getdevs(NULL, &cur)) { 556 case -1: 557 errx(1, "%s", devstat_errbuf); 558 break; 559 case 1: { 560 int retval; 561 562 num_devices = cur.dinfo->numdevs; 563 generation = cur.dinfo->generation; 564 565 retval = devstat_selectdevs(&dev_select, &num_selected, 566 &num_selections, &select_generation, 567 generation, cur.dinfo->devices, 568 num_devices, matches, num_matches, 569 specified_devices, 570 num_devices_specified, select_mode, 571 maxshowdevs, 0); 572 switch (retval) { 573 case -1: 574 errx(1, "%s", devstat_errbuf); 575 break; 576 case 1: 577 printhdr(); 578 break; 579 default: 580 break; 581 } 582 } 583 default: 584 break; 585 } 586 587 fill_vmmeter(&sum); 588 fill_vmtotal(&total); 589 (void)printf("%2d %1d %1d", 590 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 591 #define vmstat_pgtok(a) ((a) * sum.v_page_size >> 10) 592 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 593 (void)printf(" %7ld %6ld ", (long)vmstat_pgtok(total.t_avm), 594 (long)vmstat_pgtok(total.t_free)); 595 (void)printf("%4lu ", 596 (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults)); 597 (void)printf("%3lu ", 598 (unsigned long)rate(sum.v_reactivated - osum.v_reactivated)); 599 (void)printf("%3lu ", 600 (unsigned long)rate(sum.v_swapin + sum.v_vnodein - 601 (osum.v_swapin + osum.v_vnodein))); 602 (void)printf("%3lu ", 603 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout - 604 (osum.v_swapout + osum.v_vnodeout))); 605 (void)printf("%3lu ", 606 (unsigned long)rate(sum.v_tfree - osum.v_tfree)); 607 (void)printf("%3lu ", 608 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages)); 609 devstats(); 610 (void)printf("%4lu %4lu %3lu ", 611 (unsigned long)rate(sum.v_intr - osum.v_intr), 612 (unsigned long)rate(sum.v_syscall - osum.v_syscall), 613 (unsigned long)rate(sum.v_swtch - osum.v_swtch)); 614 cpustats(); 615 (void)printf("\n"); 616 (void)fflush(stdout); 617 if (reps >= 0 && --reps <= 0) 618 break; 619 osum = sum; 620 uptime = interval; 621 /* 622 * We round upward to avoid losing low-frequency events 623 * (i.e., >= 1 per interval but < 1 per second). 624 */ 625 if (interval != 1) 626 halfuptime = (uptime + 1) / 2; 627 else 628 halfuptime = 0; 629 (void)sleep(interval); 630 } 631 } 632 633 static void 634 printhdr(void) 635 { 636 int i, num_shown; 637 638 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 639 (void)printf(" procs memory page%*s", 19, ""); 640 if (num_shown > 1) 641 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 642 else if (num_shown == 1) 643 (void)printf("disk"); 644 (void)printf(" faults cpu\n"); 645 (void)printf(" r b w avm fre flt re pi po fr sr "); 646 for (i = 0; i < num_devices; i++) 647 if ((dev_select[i].selected) 648 && (dev_select[i].selected <= maxshowdevs)) 649 (void)printf("%c%c%d ", dev_select[i].device_name[0], 650 dev_select[i].device_name[1], 651 dev_select[i].unit_number); 652 (void)printf(" in sy cs us sy id\n"); 653 hdrcnt = winlines - 2; 654 } 655 656 /* 657 * Force a header to be prepended to the next output. 658 */ 659 static void 660 needhdr(int dummy __unused) 661 { 662 663 hdrcnt = 1; 664 } 665 666 #ifdef notyet 667 static void 668 dotimes(void) 669 { 670 unsigned int pgintime, rectime; 671 672 kread(X_REC, &rectime, sizeof(rectime)); 673 kread(X_PGIN, &pgintime, sizeof(pgintime)); 674 kread(X_SUM, &sum, sizeof(sum)); 675 (void)printf("%u reclaims, %u total time (usec)\n", 676 sum.v_pgrec, rectime); 677 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 678 (void)printf("\n"); 679 (void)printf("%u page ins, %u total time (msec)\n", 680 sum.v_pgin, pgintime / 10); 681 (void)printf("average: %8.1f msec / page in\n", 682 pgintime / (sum.v_pgin * 10.0)); 683 } 684 #endif 685 686 static long 687 pct(long top, long bot) 688 { 689 long ans; 690 691 if (bot == 0) 692 return(0); 693 ans = (quad_t)top * 100 / bot; 694 return (ans); 695 } 696 697 #define PCT(top, bot) pct((long)(top), (long)(bot)) 698 699 static void 700 dosum(void) 701 { 702 struct nchstats lnchstats; 703 long nchtotal; 704 705 fill_vmmeter(&sum); 706 (void)printf("%9u cpu context switches\n", sum.v_swtch); 707 (void)printf("%9u device interrupts\n", sum.v_intr); 708 (void)printf("%9u software interrupts\n", sum.v_soft); 709 (void)printf("%9u traps\n", sum.v_trap); 710 (void)printf("%9u system calls\n", sum.v_syscall); 711 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 712 (void)printf("%9u fork() calls\n", sum.v_forks); 713 (void)printf("%9u vfork() calls\n", sum.v_vforks); 714 (void)printf("%9u rfork() calls\n", sum.v_rforks); 715 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 716 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 717 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 718 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 719 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 720 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 721 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 722 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 723 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 724 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 725 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 726 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 727 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 728 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 729 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 730 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 731 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 732 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 733 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 734 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 735 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 736 (void)printf("%9u pages freed\n", sum.v_tfree); 737 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 738 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 739 (void)printf("%9u pages active\n", sum.v_active_count); 740 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 741 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 742 (void)printf("%9u pages wired down\n", sum.v_wire_count); 743 (void)printf("%9u pages free\n", sum.v_free_count); 744 (void)printf("%9u bytes per page\n", sum.v_page_size); 745 if (kd != NULL) { 746 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats)); 747 } else { 748 size_t size = sizeof(lnchstats); 749 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0); 750 if (size != sizeof(lnchstats)) 751 errx(1, "vfs.cache.nchstats size mismatch"); 752 } 753 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits + 754 lnchstats.ncs_badhits + lnchstats.ncs_falsehits + 755 lnchstats.ncs_miss + lnchstats.ncs_long; 756 (void)printf("%9ld total name lookups\n", nchtotal); 757 (void)printf( 758 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 759 "", PCT(lnchstats.ncs_goodhits, nchtotal), 760 PCT(lnchstats.ncs_neghits, nchtotal), 761 PCT(lnchstats.ncs_pass2, nchtotal)); 762 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 763 PCT(lnchstats.ncs_badhits, nchtotal), 764 PCT(lnchstats.ncs_falsehits, nchtotal), 765 PCT(lnchstats.ncs_long, nchtotal)); 766 } 767 768 static void 769 doforkst(void) 770 { 771 fill_vmmeter(&sum); 772 (void)printf("%u forks, %u pages, average %.2f\n", 773 sum.v_forks, sum.v_forkpages, 774 sum.v_forks == 0 ? 0.0 : 775 (double)sum.v_forkpages / sum.v_forks); 776 (void)printf("%u vforks, %u pages, average %.2f\n", 777 sum.v_vforks, sum.v_vforkpages, 778 sum.v_vforks == 0 ? 0.0 : 779 (double)sum.v_vforkpages / sum.v_vforks); 780 (void)printf("%u rforks, %u pages, average %.2f\n", 781 sum.v_rforks, sum.v_rforkpages, 782 sum.v_rforks == 0 ? 0.0 : 783 (double)sum.v_rforkpages / sum.v_rforks); 784 } 785 786 static void 787 devstats(void) 788 { 789 int dn, state; 790 long double transfers_per_second; 791 long double busy_seconds; 792 long tmp; 793 794 for (state = 0; state < CPUSTATES; ++state) { 795 tmp = cur.cp_time[state]; 796 cur.cp_time[state] -= last.cp_time[state]; 797 last.cp_time[state] = tmp; 798 } 799 800 busy_seconds = cur.snap_time - last.snap_time; 801 802 for (dn = 0; dn < num_devices; dn++) { 803 int di; 804 805 if ((dev_select[dn].selected == 0) 806 || (dev_select[dn].selected > maxshowdevs)) 807 continue; 808 809 di = dev_select[dn].position; 810 811 if (devstat_compute_statistics(&cur.dinfo->devices[di], 812 &last.dinfo->devices[di], busy_seconds, 813 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 814 DSM_NONE) != 0) 815 errx(1, "%s", devstat_errbuf); 816 817 (void)printf("%3.0Lf ", transfers_per_second); 818 } 819 } 820 821 static void 822 cpustats(void) 823 { 824 int state; 825 double lpct, total; 826 827 total = 0; 828 for (state = 0; state < CPUSTATES; ++state) 829 total += cur.cp_time[state]; 830 if (total) 831 lpct = 100.0 / total; 832 else 833 lpct = 0.0; 834 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 835 cur.cp_time[CP_NICE]) * lpct); 836 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 837 cur.cp_time[CP_INTR]) * lpct); 838 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * lpct); 839 } 840 841 static void 842 dointr(void) 843 { 844 unsigned long *intrcnt, uptime; 845 uint64_t inttotal; 846 size_t clen, inamlen, intrcntlen, istrnamlen; 847 unsigned int i, nintr; 848 char *intrname, *tintrname; 849 850 uptime = getuptime(); 851 if (kd != NULL) { 852 intrcntlen = namelist[X_EINTRCNT].n_value - 853 namelist[X_INTRCNT].n_value; 854 inamlen = namelist[X_EINTRNAMES].n_value - 855 namelist[X_INTRNAMES].n_value; 856 if ((intrcnt = malloc(intrcntlen)) == NULL || 857 (intrname = malloc(inamlen)) == NULL) 858 err(1, "malloc()"); 859 kread(X_INTRCNT, intrcnt, intrcntlen); 860 kread(X_INTRNAMES, intrname, inamlen); 861 } else { 862 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) { 863 if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL) 864 err(1, "reallocf()"); 865 if (mysysctl("hw.intrcnt", 866 intrcnt, &intrcntlen, NULL, 0) == 0) 867 break; 868 } 869 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) { 870 if ((intrname = reallocf(intrname, inamlen)) == NULL) 871 err(1, "reallocf()"); 872 if (mysysctl("hw.intrnames", 873 intrname, &inamlen, NULL, 0) == 0) 874 break; 875 } 876 } 877 nintr = intrcntlen / sizeof(unsigned long); 878 tintrname = intrname; 879 istrnamlen = strlen("interrupt"); 880 for (i = 0; i < nintr; i++) { 881 clen = strlen(tintrname); 882 if (clen > istrnamlen) 883 istrnamlen = clen; 884 tintrname += clen + 1; 885 } 886 (void)printf("%-*s %20s %10s\n", istrnamlen, "interrupt", "total", 887 "rate"); 888 inttotal = 0; 889 for (i = 0; i < nintr; i++) { 890 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) 891 (void)printf("%-*s %20lu %10lu\n", istrnamlen, intrname, 892 *intrcnt, *intrcnt / uptime); 893 intrname += strlen(intrname) + 1; 894 inttotal += *intrcnt++; 895 } 896 (void)printf("%-*s %20llu %10llu\n", istrnamlen, "Total", 897 (long long)inttotal, (long long)(inttotal / uptime)); 898 } 899 900 static void 901 domem(void) 902 { 903 struct malloc_type type; 904 905 if (kd == NULL) { 906 dosysctl("kern.malloc"); 907 return; 908 } 909 kread(X_KMEMSTATS, &type.ks_next, sizeof(type.ks_next)); 910 (void)printf("\n Type InUse MemUse HighUse Requests" 911 " Size(s)\n"); 912 do { 913 /* XXX this should be exported in sys/malloc.h */ 914 struct { 915 int kz_size; 916 char *kz_name; 917 /* uma_zone_t */ void *kz_zone; 918 } kz; 919 size_t kmemzonenum; 920 char *str; 921 int first; 922 923 if (kvm_read(kd, (u_long)type.ks_next, &type, sizeof(type)) != 924 sizeof(type)) 925 errx(1, "%s: %p: %s", __func__, type.ks_next, 926 kvm_geterr(kd)); 927 if (type.ks_calls == 0) 928 continue; 929 str = kgetstr(type.ks_shortdesc); 930 (void)printf("%13s%6lu%6luK%7luK%9llu", 931 str, 932 type.ks_inuse, 933 (type.ks_memuse + 1023) / 1024, 934 (type.ks_maxused + 1023) / 1024, 935 (long long unsigned)type.ks_calls); 936 free(str); 937 for (kmemzonenum = 0, first = 1; ; kmemzonenum++) { 938 kreado(X_KMEMZONES, &kz, sizeof(kz), 939 kmemzonenum * sizeof(kz)); 940 if (kz.kz_name == NULL) { 941 (void)printf("\n"); 942 break; 943 } 944 if (!(type.ks_size & (1 << kmemzonenum))) 945 continue; 946 if (first) 947 (void)printf(" "); 948 else 949 (void)printf(","); 950 first = 0; 951 str = kgetstr(kz.kz_name); 952 (void)printf("%s", str); 953 free(str); 954 } 955 } while (type.ks_next != NULL); 956 } 957 958 static void 959 dozmem(void) 960 { 961 if (kd != NULL) 962 errx(1, "not implemented"); 963 dosysctl("vm.zone"); 964 } 965 966 static void 967 dosysctl(const char *name) 968 { 969 char *buf; 970 size_t bufsize; 971 972 for (buf = NULL, bufsize = 1024; ; bufsize *= 2) { 973 if ((buf = realloc(buf, bufsize)) == NULL) 974 err(1, "realloc()"); 975 bufsize--; /* Leave space for the kern.malloc fixup. */ 976 if (mysysctl(name, buf, &bufsize, NULL, 0) == 0) 977 break; 978 } 979 buf[bufsize] = '\0'; /* Fix up kern.malloc not returning a string. */ 980 (void)printf("%s", buf); 981 free(buf); 982 } 983 984 /* 985 * kread reads something from the kernel, given its nlist index. 986 */ 987 static void 988 kreado(int nlx, void *addr, size_t size, size_t offset) 989 { 990 const char *sym; 991 992 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 993 sym = namelist[nlx].n_name; 994 if (*sym == '_') 995 ++sym; 996 errx(1, "symbol %s not defined", sym); 997 } 998 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr, 999 size) != size) { 1000 sym = namelist[nlx].n_name; 1001 if (*sym == '_') 1002 ++sym; 1003 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1004 } 1005 } 1006 1007 static void 1008 kread(int nlx, void *addr, size_t size) 1009 { 1010 kreado(nlx, addr, size, 0); 1011 } 1012 1013 static char * 1014 kgetstr(const char *strp) 1015 { 1016 int n = 0, size = 1; 1017 char *ret = NULL; 1018 1019 do { 1020 if (size == n + 1) { 1021 ret = realloc(ret, size); 1022 if (ret == NULL) 1023 err(1, "%s: realloc", __func__); 1024 size *= 2; 1025 } 1026 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1) 1027 errx(1, "%s: %s", __func__, kvm_geterr(kd)); 1028 } while (ret[n++] != '\0'); 1029 return (ret); 1030 } 1031 1032 static void 1033 usage(void) 1034 { 1035 (void)fprintf(stderr, "%s%s", 1036 "usage: vmstat [-aimsz] [-c count] [-M core [-N system]] [-w wait]\n", 1037 " [-n devs] [disks]\n"); 1038 exit(1); 1039 } 1040