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 1.12 2004/06/27 17:39:05 dillon Exp $ 37 */ 38 39 #define _KERNEL_STRUCTURES 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 #include <sys/user.h> 44 #include <sys/dkstat.h> 45 #include <sys/uio.h> 46 #include <sys/namei.h> 47 #include <sys/malloc.h> 48 #include <sys/signal.h> 49 #include <sys/fcntl.h> 50 #include <sys/ioctl.h> 51 #include <sys/sysctl.h> 52 #include <sys/vmmeter.h> 53 54 #include <vm/vm_param.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <kvm.h> 60 #include <limits.h> 61 #include <nlist.h> 62 #include <paths.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <sysexits.h> 67 #include <time.h> 68 #include <unistd.h> 69 #include <devstat.h> 70 71 static struct nlist namelist[] = { 72 #define X_CPTIME 0 73 { "_cp_time" }, 74 #define X_BOOTTIME 1 75 { "_boottime" }, 76 #define X_HZ 2 77 { "_hz" }, 78 #define X_STATHZ 3 79 { "_stathz" }, 80 #define X_NCHSTATS 4 81 { "_nchstats" }, 82 #define X_INTRNAMES 5 83 { "_intrnames" }, 84 #define X_EINTRNAMES 6 85 { "_eintrnames" }, 86 #define X_INTRCNT 7 87 { "_intrcnt" }, 88 #define X_EINTRCNT 8 89 { "_eintrcnt" }, 90 #define X_KMEMSTATISTICS 9 91 { "_kmemstatistics" }, 92 #define X_ZLIST 10 93 { "_zlist" }, 94 #ifdef notyet 95 #define X_DEFICIT 11 96 { "_deficit" }, 97 #define X_FORKSTAT 12 98 { "_forkstat" }, 99 #define X_REC 13 100 { "_rectime" }, 101 #define X_PGIN 14 102 { "_pgintime" }, 103 #define X_XSTATS 15 104 { "_xstats" }, 105 #define X_END 16 106 #else 107 #define X_END 11 108 #endif 109 { "" }, 110 }; 111 112 struct statinfo cur, last; 113 int num_devices, maxshowdevs; 114 long generation; 115 struct device_selection *dev_select; 116 int num_selected; 117 struct devstat_match *matches; 118 int num_matches = 0; 119 int num_devices_specified, num_selections; 120 long select_generation; 121 char **specified_devices; 122 devstat_select_mode select_mode; 123 124 struct vmmeter vmm, ovmm; 125 struct vmstats vms, ovms; 126 127 int winlines = 20; 128 int nflag = 0; 129 130 kvm_t *kd; 131 132 #define FORKSTAT 0x01 133 #define INTRSTAT 0x02 134 #define MEMSTAT 0x04 135 #define SUMSTAT 0x08 136 #define TIMESTAT 0x10 137 #define VMSTAT 0x20 138 #define ZMEMSTAT 0x40 139 140 void cpustats(), dointr(), domem(), dosum(), dozmem(); 141 void dovmstat(), kread(), usage(); 142 #ifdef notyet 143 void dotimes(), doforkst(); 144 #endif 145 void printhdr(void); 146 static void devstats(); 147 148 int 149 main(register int argc, register char **argv) 150 { 151 register int c, todo; 152 u_int interval; 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:stw: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 'w': 206 interval = atoi(optarg); 207 break; 208 case 'z': 209 todo |= ZMEMSTAT; 210 break; 211 case '?': 212 default: 213 usage(); 214 } 215 } 216 argc -= optind; 217 argv += optind; 218 219 if (todo == 0) 220 todo = VMSTAT; 221 222 /* 223 * Discard setgid privileges if not the running kernel so that bad 224 * guys can't print interesting stuff from kernel memory. 225 */ 226 if (nlistf != NULL || memf != NULL) 227 setgid(getgid()); 228 229 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 230 if (kd == 0) 231 errx(1, "kvm_openfiles: %s", errbuf); 232 233 if ((c = kvm_nlist(kd, namelist)) != 0) { 234 if (c > 0) { 235 warnx("undefined symbols:"); 236 for (c = 0; 237 c < sizeof(namelist)/sizeof(namelist[0]); c++) 238 if (namelist[c].n_type == 0) 239 fprintf(stderr, " %s", 240 namelist[c].n_name); 241 (void)fputc('\n', stderr); 242 } else 243 warnx("kvm_nlist: %s", kvm_geterr(kd)); 244 exit(1); 245 } 246 247 if (todo & VMSTAT) { 248 char **getdrivedata(); 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 (void) 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 = atoi(*argv); 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 = 1; 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 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 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 (void)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 hz, hdrcnt; 385 386 void 387 dovmstat(u_int interval, int reps) 388 { 389 struct vmtotal total; 390 time_t uptime, halfuptime; 391 struct devinfo *tmp_dinfo; 392 void needhdr(); 393 int vmm_size = sizeof(vmm); 394 int vms_size = sizeof(vms); 395 int vmt_size = sizeof(total); 396 397 uptime = getuptime(); 398 halfuptime = uptime / 2; 399 (void)signal(SIGCONT, needhdr); 400 401 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 402 kread(X_STATHZ, &hz, sizeof(hz)); 403 if (!hz) 404 kread(X_HZ, &hz, sizeof(hz)); 405 406 for (hdrcnt = 1;;) { 407 if (!--hdrcnt) 408 printhdr(); 409 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 410 411 tmp_dinfo = last.dinfo; 412 last.dinfo = cur.dinfo; 413 cur.dinfo = tmp_dinfo; 414 last.busy_time = cur.busy_time; 415 416 /* 417 * Here what we want to do is refresh our device stats. 418 * getdevs() returns 1 when the device list has changed. 419 * If the device list has changed, we want to go through 420 * the selection process again, in case a device that we 421 * were previously displaying has gone away. 422 */ 423 switch (getdevs(&cur)) { 424 case -1: 425 errx(1, "%s", devstat_errbuf); 426 break; 427 case 1: { 428 int retval; 429 430 num_devices = cur.dinfo->numdevs; 431 generation = cur.dinfo->generation; 432 433 retval = selectdevs(&dev_select, &num_selected, 434 &num_selections, &select_generation, 435 generation, cur.dinfo->devices, 436 num_devices, matches, num_matches, 437 specified_devices, 438 num_devices_specified, select_mode, 439 maxshowdevs, 0); 440 switch (retval) { 441 case -1: 442 errx(1, "%s", devstat_errbuf); 443 break; 444 case 1: 445 printhdr(); 446 break; 447 default: 448 break; 449 } 450 } 451 default: 452 break; 453 } 454 455 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 456 perror("sysctlbyname: vm.vmstats"); 457 exit(1); 458 } 459 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 460 perror("sysctlbyname: vm.vmmeter"); 461 exit(1); 462 } 463 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 464 perror("sysctlbyname: vm.vmtotal"); 465 exit(1); 466 } 467 (void)printf("%2d %1d %1d", 468 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 469 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 470 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 471 (void)printf(" %7ld %6ld ", 472 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 473 (void)printf("%4lu ", 474 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 475 (void)printf("%3lu ", 476 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 477 (void)printf("%3lu ", 478 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 479 (ovmm.v_swapin + ovmm.v_vnodein))); 480 (void)printf("%3lu ", 481 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 482 (ovmm.v_swapout + ovmm.v_vnodeout))); 483 (void)printf("%3lu ", 484 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 485 (void)printf("%3lu ", 486 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 487 devstats(); 488 (void)printf("%4lu %4lu %3lu ", 489 (u_long)rate(vmm.v_intr - ovmm.v_intr), 490 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 491 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 492 cpustats(); 493 (void)printf("\n"); 494 (void)fflush(stdout); 495 if (reps >= 0 && --reps <= 0) 496 break; 497 ovmm = vmm; 498 uptime = interval; 499 /* 500 * We round upward to avoid losing low-frequency events 501 * (i.e., >= 1 per interval but < 1 per second). 502 */ 503 if (interval != 1) 504 halfuptime = (uptime + 1) / 2; 505 else 506 halfuptime = 0; 507 (void)sleep(interval); 508 } 509 } 510 511 void 512 printhdr(void) 513 { 514 int i, num_shown; 515 516 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 517 (void)printf(" procs memory page%*s", 19, ""); 518 if (num_shown > 1) 519 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 520 else if (num_shown == 1) 521 (void)printf("disk"); 522 (void)printf(" faults cpu\n"); 523 (void)printf(" r b w avm fre flt re pi po fr sr "); 524 for (i = 0; i < num_devices; i++) 525 if ((dev_select[i].selected) 526 && (dev_select[i].selected <= maxshowdevs)) 527 (void)printf("%c%c%d ", dev_select[i].device_name[0], 528 dev_select[i].device_name[1], 529 dev_select[i].unit_number); 530 (void)printf(" in sy cs us sy id\n"); 531 hdrcnt = winlines - 2; 532 } 533 534 /* 535 * Force a header to be prepended to the next output. 536 */ 537 void 538 needhdr(void) 539 { 540 541 hdrcnt = 1; 542 } 543 544 long 545 pct(long top, long bot) 546 { 547 long ans; 548 549 if (bot == 0) 550 return(0); 551 ans = (quad_t)top * 100 / bot; 552 return (ans); 553 } 554 555 #define PCT(top, bot) pct((long)(top), (long)(bot)) 556 557 void 558 dosum(void) 559 { 560 struct nchstats *nch_tmp, nchstats; 561 int vms_size = sizeof(vms); 562 int vmm_size = sizeof(vmm); 563 int cpucnt; 564 u_long nchtotal; 565 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 566 567 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 568 perror("sysctlbyname: vm.vmstats"); 569 exit(1); 570 } 571 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 572 perror("sysctlbyname: vm.vmstats"); 573 exit(1); 574 } 575 (void)printf("%9u cpu context switches\n", vmm.v_swtch); 576 (void)printf("%9u device interrupts\n", vmm.v_intr); 577 (void)printf("%9u software interrupts\n", vmm.v_soft); 578 (void)printf("%9u traps\n", vmm.v_trap); 579 (void)printf("%9u system calls\n", vmm.v_syscall); 580 (void)printf("%9u kernel threads created\n", vmm.v_kthreads); 581 (void)printf("%9u fork() calls\n", vmm.v_forks); 582 (void)printf("%9u vfork() calls\n", vmm.v_vforks); 583 (void)printf("%9u rfork() calls\n", vmm.v_rforks); 584 (void)printf("%9u exec() calls\n", vmm.v_exec); 585 (void)printf("%9u swap pager pageins\n", vmm.v_swapin); 586 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 587 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout); 588 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 589 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein); 590 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 591 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 592 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 593 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 594 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 595 (void)printf("%9u pages reactivated\n", vmm.v_reactivated); 596 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 597 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 598 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 599 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 600 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans); 601 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults); 602 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 603 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages); 604 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 605 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 606 (void)printf("%9u pages freed\n", vmm.v_tfree); 607 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree); 608 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 609 (void)printf("%9u pages active\n", vms.v_active_count); 610 (void)printf("%9u pages inactive\n", vms.v_inactive_count); 611 (void)printf("%9u pages in VM cache\n", vms.v_cache_count); 612 (void)printf("%9u pages wired down\n", vms.v_wire_count); 613 (void)printf("%9u pages free\n", vms.v_free_count); 614 (void)printf("%9u bytes per page\n", vms.v_page_size); 615 616 if ((nch_tmp = malloc(nch_size)) == NULL) { 617 perror("malloc"); 618 exit(1); 619 } else { 620 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 621 perror("sysctlbyname vfs.cache.nchstats"); 622 free(nch_tmp); 623 exit(1); 624 } else { 625 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 626 perror("realloc"); 627 exit(1); 628 } 629 } 630 } 631 632 cpucnt = nch_size / sizeof(struct nchstats); 633 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 634 635 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 636 nchstats.ncs_badhits + nchstats.ncs_falsehits + 637 nchstats.ncs_miss + nchstats.ncs_long; 638 (void)printf("%9ld total name lookups\n", nchtotal); 639 (void)printf( 640 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 641 "", PCT(nchstats.ncs_goodhits, nchtotal), 642 PCT(nchstats.ncs_neghits, nchtotal), 643 PCT(nchstats.ncs_pass2, nchtotal)); 644 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 645 PCT(nchstats.ncs_badhits, nchtotal), 646 PCT(nchstats.ncs_falsehits, nchtotal), 647 PCT(nchstats.ncs_long, nchtotal)); 648 free(nch_tmp); 649 } 650 651 #ifdef notyet 652 void 653 doforkst(void) 654 { 655 struct forkstat fks; 656 657 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 658 (void)printf("%d forks, %d pages, average %.2f\n", 659 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 660 (void)printf("%d vforks, %d pages, average %.2f\n", 661 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 662 } 663 #endif 664 665 static void 666 devstats(void) 667 { 668 register int dn, state; 669 long double transfers_per_second; 670 long double busy_seconds; 671 long tmp; 672 673 for (state = 0; state < CPUSTATES; ++state) { 674 tmp = cur.cp_time[state]; 675 cur.cp_time[state] -= last.cp_time[state]; 676 last.cp_time[state] = tmp; 677 } 678 679 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 680 681 for (dn = 0; dn < num_devices; dn++) { 682 int di; 683 684 if ((dev_select[dn].selected == 0) 685 || (dev_select[dn].selected > maxshowdevs)) 686 continue; 687 688 di = dev_select[dn].position; 689 690 if (compute_stats(&cur.dinfo->devices[di], 691 &last.dinfo->devices[di], busy_seconds, 692 NULL, NULL, NULL, 693 NULL, &transfers_per_second, NULL, 694 NULL, NULL) != 0) 695 errx(1, "%s", devstat_errbuf); 696 697 printf("%3.0Lf ", transfers_per_second); 698 } 699 } 700 701 void 702 cpustats(void) 703 { 704 register int state; 705 double pct, total; 706 707 total = 0; 708 for (state = 0; state < CPUSTATES; ++state) 709 total += cur.cp_time[state]; 710 if (total) 711 pct = 100 / total; 712 else 713 pct = 0; 714 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 715 cur.cp_time[CP_NICE]) * pct); 716 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 717 cur.cp_time[CP_INTR]) * pct); 718 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 719 } 720 721 void 722 dointr(void) 723 { 724 register u_long *intrcnt, uptime; 725 register u_int64_t inttotal; 726 register int nintr, inamlen; 727 register char *intrname; 728 729 uptime = getuptime(); 730 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 731 inamlen = 732 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 733 intrcnt = malloc((size_t)nintr); 734 intrname = malloc((size_t)inamlen); 735 if (intrcnt == NULL || intrname == NULL) 736 errx(1, "malloc"); 737 kread(X_INTRCNT, intrcnt, (size_t)nintr); 738 kread(X_INTRNAMES, intrname, (size_t)inamlen); 739 (void)printf("interrupt total rate\n"); 740 inttotal = 0; 741 nintr /= sizeof(long); 742 while (--nintr >= 0) { 743 if (intrname[0] || *intrcnt) { 744 printf("%-12s %20lu %10lu\n", intrname, 745 *intrcnt, *intrcnt / uptime); 746 } 747 intrname += strlen(intrname) + 1; 748 inttotal += *intrcnt++; 749 } 750 (void)printf("Total %20llu %10llu\n", inttotal, 751 inttotal / (u_int64_t) uptime); 752 } 753 754 #define MAX_KMSTATS 200 755 756 static 757 long 758 cpuagg(long *ary) 759 { 760 int i; 761 long ttl; 762 763 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 764 ttl += ary[i]; 765 return(ttl); 766 } 767 768 void 769 domem(void) 770 { 771 register struct malloc_type *ks; 772 register int i, j; 773 int first, nkms; 774 long totuse = 0, totfree = 0, totreq = 0; 775 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 776 char buf[1024]; 777 778 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 779 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 780 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 781 &kmemstats[nkms], sizeof(kmemstats[0]))) 782 err(1, "kvm_read(%p)", (void *)kmsp); 783 if (sizeof(buf) != kvm_read(kd, 784 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 785 err(1, "kvm_read(%p)", 786 (void *)kmemstats[nkms].ks_shortdesc); 787 buf[sizeof(buf) - 1] = '\0'; 788 kmemstats[nkms].ks_shortdesc = strdup(buf); 789 kmsp = kmemstats[nkms].ks_next; 790 } 791 if (kmsp != NULL) 792 warnx("truncated to the first %d memory types", nkms); 793 794 (void)printf( 795 "\nMemory statistics by type Type Kern\n"); 796 (void)printf( 797 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 798 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 799 if (ks->ks_calls == 0) 800 continue; 801 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 802 ks->ks_shortdesc, 803 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 804 (ks->ks_maxused + 1023) / 1024, 805 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 806 ks->ks_limblocks, ks->ks_mapblocks); 807 first = 1; 808 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 809 if ((ks->ks_size & j) == 0) 810 continue; 811 if (first) 812 printf(" "); 813 else 814 printf(","); 815 if(j<1024) 816 printf("%d",j); 817 else 818 printf("%dK",j>>10); 819 first = 0; 820 } 821 printf("\n"); 822 totuse += cpuagg(ks->ks_memuse); 823 totreq += ks->ks_calls; 824 } 825 (void)printf("\nMemory Totals: In Use Free Requests\n"); 826 (void)printf(" %7ldK %6ldK %8ld\n", 827 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 828 } 829 830 void 831 dozmem(void) 832 { 833 char *buf; 834 size_t bufsize; 835 836 buf = NULL; 837 bufsize = 1024; 838 for (;;) { 839 if ((buf = realloc(buf, bufsize)) == NULL) 840 err(1, "realloc()"); 841 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 842 break; 843 if (errno != ENOMEM) 844 err(1, "sysctl()"); 845 bufsize *= 2; 846 } 847 buf[bufsize] = '\0'; /* play it safe */ 848 (void)printf("%s\n\n", buf); 849 free(buf); 850 } 851 852 /* 853 * kread reads something from the kernel, given its nlist index. 854 */ 855 void 856 kread(int nlx, void *addr, size_t size) 857 { 858 char *sym; 859 860 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 861 sym = namelist[nlx].n_name; 862 if (*sym == '_') 863 ++sym; 864 errx(1, "symbol %s not defined", sym); 865 } 866 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 867 sym = namelist[nlx].n_name; 868 if (*sym == '_') 869 ++sym; 870 errx(1, "%s: %s", sym, kvm_geterr(kd)); 871 } 872 } 873 874 void 875 usage(void) 876 { 877 (void)fprintf(stderr, "%s%s", 878 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 879 " [-n devs] [disks]\n"); 880 exit(1); 881 } 882