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 1.7 2003/10/04 20:36:54 hmp Exp $ 37 */ 38 39 #define _KERNEL_STRUCTURES 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/proc.h> 43 #include <sys/dkstat.h> 44 #include <sys/uio.h> 45 #include <sys/namei.h> 46 #include <sys/malloc.h> 47 #include <sys/signal.h> 48 #include <sys/fcntl.h> 49 #include <sys/ioctl.h> 50 #include <sys/sysctl.h> 51 #include <sys/vmmeter.h> 52 53 #include <vm/vm_param.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <kvm.h> 59 #include <limits.h> 60 #include <nlist.h> 61 #include <paths.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <sysexits.h> 66 #include <time.h> 67 #include <unistd.h> 68 #include <devstat.h> 69 70 static struct nlist namelist[] = { 71 #define X_CPTIME 0 72 { "_cp_time" }, 73 #define X_BOOTTIME 1 74 { "_boottime" }, 75 #define X_HZ 2 76 { "_hz" }, 77 #define X_STATHZ 3 78 { "_stathz" }, 79 #define X_NCHSTATS 4 80 { "_nchstats" }, 81 #define X_INTRNAMES 5 82 { "_intrnames" }, 83 #define X_EINTRNAMES 6 84 { "_eintrnames" }, 85 #define X_INTRCNT 7 86 { "_intrcnt" }, 87 #define X_EINTRCNT 8 88 { "_eintrcnt" }, 89 #define X_KMEMSTATISTICS 9 90 { "_kmemstatistics" }, 91 #if 0 92 #define X_KMEMBUCKETS 10 93 { "_bucket" }, 94 #else 95 { "_kmemstatistics" }, 96 #endif 97 #define X_ZLIST 11 98 { "_zlist" }, 99 #ifdef notyet 100 #define X_DEFICIT 12 101 { "_deficit" }, 102 #define X_FORKSTAT 13 103 { "_forkstat" }, 104 #define X_REC 14 105 { "_rectime" }, 106 #define X_PGIN 15 107 { "_pgintime" }, 108 #define X_XSTATS 16 109 { "_xstats" }, 110 #define X_END 17 111 #else 112 #define X_END 12 113 #endif 114 { "" }, 115 }; 116 117 struct statinfo cur, last; 118 int num_devices, maxshowdevs; 119 long generation; 120 struct device_selection *dev_select; 121 int num_selected; 122 struct devstat_match *matches; 123 int num_matches = 0; 124 int num_devices_specified, num_selections; 125 long select_generation; 126 char **specified_devices; 127 devstat_select_mode select_mode; 128 129 struct vmmeter vmm, ovmm; 130 struct vmstats vms, ovms; 131 132 int winlines = 20; 133 int nflag = 0; 134 135 kvm_t *kd; 136 137 #define FORKSTAT 0x01 138 #define INTRSTAT 0x02 139 #define MEMSTAT 0x04 140 #define SUMSTAT 0x08 141 #define TIMESTAT 0x10 142 #define VMSTAT 0x20 143 #define ZMEMSTAT 0x40 144 145 void cpustats(), dointr(), domem(), dosum(), dozmem(); 146 void dovmstat(), kread(), usage(); 147 #ifdef notyet 148 void dotimes(), doforkst(); 149 #endif 150 void printhdr(void); 151 static void devstats(); 152 153 int 154 main(register int argc, register char **argv) 155 { 156 register int c, todo; 157 u_int interval; 158 int reps; 159 char *memf, *nlistf; 160 char errbuf[_POSIX2_LINE_MAX]; 161 162 memf = nlistf = NULL; 163 interval = reps = todo = 0; 164 maxshowdevs = 2; 165 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 166 switch (c) { 167 case 'c': 168 reps = atoi(optarg); 169 break; 170 case 'f': 171 #ifdef notyet 172 todo |= FORKSTAT; 173 #else 174 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 175 #endif 176 break; 177 case 'i': 178 todo |= INTRSTAT; 179 break; 180 case 'M': 181 memf = optarg; 182 break; 183 case 'm': 184 todo |= MEMSTAT; 185 break; 186 case 'N': 187 nlistf = optarg; 188 break; 189 case 'n': 190 nflag = 1; 191 maxshowdevs = atoi(optarg); 192 if (maxshowdevs < 0) 193 errx(1, "number of devices %d is < 0", 194 maxshowdevs); 195 break; 196 case 'p': 197 if (buildmatch(optarg, &matches, &num_matches) != 0) 198 errx(1, "%s", devstat_errbuf); 199 break; 200 case 's': 201 todo |= SUMSTAT; 202 break; 203 case 't': 204 #ifdef notyet 205 todo |= TIMESTAT; 206 #else 207 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 208 #endif 209 break; 210 case 'w': 211 interval = atoi(optarg); 212 break; 213 case 'z': 214 todo |= ZMEMSTAT; 215 break; 216 case '?': 217 default: 218 usage(); 219 } 220 } 221 argc -= optind; 222 argv += optind; 223 224 if (todo == 0) 225 todo = VMSTAT; 226 227 /* 228 * Discard setgid privileges if not the running kernel so that bad 229 * guys can't print interesting stuff from kernel memory. 230 */ 231 if (nlistf != NULL || memf != NULL) 232 setgid(getgid()); 233 234 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 235 if (kd == 0) 236 errx(1, "kvm_openfiles: %s", errbuf); 237 238 if ((c = kvm_nlist(kd, namelist)) != 0) { 239 if (c > 0) { 240 warnx("undefined symbols:"); 241 for (c = 0; 242 c < sizeof(namelist)/sizeof(namelist[0]); c++) 243 if (namelist[c].n_type == 0) 244 fprintf(stderr, " %s", 245 namelist[c].n_name); 246 (void)fputc('\n', stderr); 247 } else 248 warnx("kvm_nlist: %s", kvm_geterr(kd)); 249 exit(1); 250 } 251 252 if (todo & VMSTAT) { 253 char **getdrivedata(); 254 struct winsize winsize; 255 256 /* 257 * Make sure that the userland devstat version matches the 258 * kernel devstat version. If not, exit and print a 259 * message informing the user of his mistake. 260 */ 261 if (checkversion() < 0) 262 errx(1, "%s", devstat_errbuf); 263 264 265 argv = getdrivedata(argv); 266 winsize.ws_row = 0; 267 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 268 if (winsize.ws_row > 0) 269 winlines = winsize.ws_row; 270 271 } 272 273 #define BACKWARD_COMPATIBILITY 274 #ifdef BACKWARD_COMPATIBILITY 275 if (*argv) { 276 interval = atoi(*argv); 277 if (*++argv) 278 reps = atoi(*argv); 279 } 280 #endif 281 282 if (interval) { 283 if (!reps) 284 reps = -1; 285 } else if (reps) 286 interval = 1; 287 288 #ifdef notyet 289 if (todo & FORKSTAT) 290 doforkst(); 291 #endif 292 if (todo & MEMSTAT) 293 domem(); 294 if (todo & ZMEMSTAT) 295 dozmem(); 296 if (todo & SUMSTAT) 297 dosum(); 298 #ifdef notyet 299 if (todo & TIMESTAT) 300 dotimes(); 301 #endif 302 if (todo & INTRSTAT) 303 dointr(); 304 if (todo & VMSTAT) 305 dovmstat(interval, reps); 306 exit(0); 307 } 308 309 char ** 310 getdrivedata(char **argv) 311 { 312 if ((num_devices = getnumdevs()) < 0) 313 errx(1, "%s", devstat_errbuf); 314 315 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 316 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 317 bzero(cur.dinfo, sizeof(struct devinfo)); 318 bzero(last.dinfo, sizeof(struct devinfo)); 319 320 if (getdevs(&cur) == -1) 321 errx(1, "%s", devstat_errbuf); 322 323 num_devices = cur.dinfo->numdevs; 324 generation = cur.dinfo->generation; 325 326 specified_devices = (char **)malloc(sizeof(char *)); 327 for (num_devices_specified = 0; *argv; ++argv) { 328 if (isdigit(**argv)) 329 break; 330 num_devices_specified++; 331 specified_devices = (char **)realloc(specified_devices, 332 sizeof(char *) * 333 num_devices_specified); 334 specified_devices[num_devices_specified - 1] = *argv; 335 } 336 dev_select = NULL; 337 338 if (nflag == 0 && maxshowdevs < num_devices_specified) 339 maxshowdevs = num_devices_specified; 340 341 /* 342 * People are generally only interested in disk statistics when 343 * they're running vmstat. So, that's what we're going to give 344 * them if they don't specify anything by default. We'll also give 345 * them any other random devices in the system so that we get to 346 * maxshowdevs devices, if that many devices exist. If the user 347 * specifies devices on the command line, either through a pattern 348 * match or by naming them explicitly, we will give the user only 349 * those devices. 350 */ 351 if ((num_devices_specified == 0) && (num_matches == 0)) { 352 if (buildmatch("da", &matches, &num_matches) != 0) 353 errx(1, "%s", devstat_errbuf); 354 355 select_mode = DS_SELECT_ADD; 356 } else 357 select_mode = DS_SELECT_ONLY; 358 359 /* 360 * At this point, selectdevs will almost surely indicate that the 361 * device list has changed, so we don't look for return values of 0 362 * or 1. If we get back -1, though, there is an error. 363 */ 364 if (selectdevs(&dev_select, &num_selected, &num_selections, 365 &select_generation, generation, cur.dinfo->devices, 366 num_devices, matches, num_matches, specified_devices, 367 num_devices_specified, select_mode, 368 maxshowdevs, 0) == -1) 369 errx(1, "%s", devstat_errbuf); 370 371 return(argv); 372 } 373 374 long 375 getuptime(void) 376 { 377 static time_t now, boottime; 378 time_t uptime; 379 380 if (boottime == 0) 381 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 382 (void)time(&now); 383 uptime = now - boottime; 384 if (uptime <= 0 || uptime > 60*60*24*365*10) 385 errx(1, "time makes no sense; namelist must be wrong"); 386 return(uptime); 387 } 388 389 int hz, hdrcnt; 390 391 void 392 dovmstat(u_int interval, int reps) 393 { 394 struct vmtotal total; 395 time_t uptime, halfuptime; 396 struct devinfo *tmp_dinfo; 397 void needhdr(); 398 int mib[2]; 399 size_t size; 400 int vmm_size = sizeof(vmm); 401 int vms_size = sizeof(vms); 402 int vmt_size = sizeof(total); 403 404 uptime = getuptime(); 405 halfuptime = uptime / 2; 406 (void)signal(SIGCONT, needhdr); 407 408 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 409 kread(X_STATHZ, &hz, sizeof(hz)); 410 if (!hz) 411 kread(X_HZ, &hz, sizeof(hz)); 412 413 for (hdrcnt = 1;;) { 414 if (!--hdrcnt) 415 printhdr(); 416 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 417 418 tmp_dinfo = last.dinfo; 419 last.dinfo = cur.dinfo; 420 cur.dinfo = tmp_dinfo; 421 last.busy_time = cur.busy_time; 422 423 /* 424 * Here what we want to do is refresh our device stats. 425 * getdevs() returns 1 when the device list has changed. 426 * If the device list has changed, we want to go through 427 * the selection process again, in case a device that we 428 * were previously displaying has gone away. 429 */ 430 switch (getdevs(&cur)) { 431 case -1: 432 errx(1, "%s", devstat_errbuf); 433 break; 434 case 1: { 435 int retval; 436 437 num_devices = cur.dinfo->numdevs; 438 generation = cur.dinfo->generation; 439 440 retval = selectdevs(&dev_select, &num_selected, 441 &num_selections, &select_generation, 442 generation, cur.dinfo->devices, 443 num_devices, matches, num_matches, 444 specified_devices, 445 num_devices_specified, select_mode, 446 maxshowdevs, 0); 447 switch (retval) { 448 case -1: 449 errx(1, "%s", devstat_errbuf); 450 break; 451 case 1: 452 printhdr(); 453 break; 454 default: 455 break; 456 } 457 } 458 default: 459 break; 460 } 461 462 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 463 perror("sysctlbyname: vm.vmstats"); 464 exit(1); 465 } 466 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 467 perror("sysctlbyname: vm.vmmeter"); 468 exit(1); 469 } 470 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 471 perror("sysctlbyname: vm.vmtotal"); 472 exit(1); 473 } 474 (void)printf("%2d %1d %1d", 475 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 476 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 477 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 478 (void)printf(" %7ld %6ld ", 479 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 480 (void)printf("%4lu ", 481 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 482 (void)printf("%3lu ", 483 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 484 (void)printf("%3lu ", 485 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 486 (ovmm.v_swapin + ovmm.v_vnodein))); 487 (void)printf("%3lu ", 488 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 489 (ovmm.v_swapout + ovmm.v_vnodeout))); 490 (void)printf("%3lu ", 491 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 492 (void)printf("%3lu ", 493 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 494 devstats(); 495 (void)printf("%4lu %4lu %3lu ", 496 (u_long)rate(vmm.v_intr - ovmm.v_intr), 497 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 498 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 499 cpustats(); 500 (void)printf("\n"); 501 (void)fflush(stdout); 502 if (reps >= 0 && --reps <= 0) 503 break; 504 ovmm = vmm; 505 uptime = interval; 506 /* 507 * We round upward to avoid losing low-frequency events 508 * (i.e., >= 1 per interval but < 1 per second). 509 */ 510 if (interval != 1) 511 halfuptime = (uptime + 1) / 2; 512 else 513 halfuptime = 0; 514 (void)sleep(interval); 515 } 516 } 517 518 void 519 printhdr(void) 520 { 521 int i, num_shown; 522 523 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 524 (void)printf(" procs memory page%*s", 19, ""); 525 if (num_shown > 1) 526 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 527 else if (num_shown == 1) 528 (void)printf("disk"); 529 (void)printf(" faults cpu\n"); 530 (void)printf(" r b w avm fre flt re pi po fr sr "); 531 for (i = 0; i < num_devices; i++) 532 if ((dev_select[i].selected) 533 && (dev_select[i].selected <= maxshowdevs)) 534 (void)printf("%c%c%d ", dev_select[i].device_name[0], 535 dev_select[i].device_name[1], 536 dev_select[i].unit_number); 537 (void)printf(" in sy cs us sy id\n"); 538 hdrcnt = winlines - 2; 539 } 540 541 /* 542 * Force a header to be prepended to the next output. 543 */ 544 void 545 needhdr(void) 546 { 547 548 hdrcnt = 1; 549 } 550 551 long 552 pct(long top, long bot) 553 { 554 long ans; 555 556 if (bot == 0) 557 return(0); 558 ans = (quad_t)top * 100 / bot; 559 return (ans); 560 } 561 562 #define PCT(top, bot) pct((long)(top), (long)(bot)) 563 564 void 565 dosum(void) 566 { 567 struct nchstats nchstats; 568 long nchtotal; 569 int vms_size = sizeof(vms); 570 int vmm_size = sizeof(vmm); 571 572 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 573 perror("sysctlbyname: vm.vmstats"); 574 exit(1); 575 } 576 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 577 perror("sysctlbyname: vm.vmstats"); 578 exit(1); 579 } 580 (void)printf("%9u cpu context switches\n", vmm.v_swtch); 581 (void)printf("%9u device interrupts\n", vmm.v_intr); 582 (void)printf("%9u software interrupts\n", vmm.v_soft); 583 (void)printf("%9u traps\n", vmm.v_trap); 584 (void)printf("%9u system calls\n", vmm.v_syscall); 585 (void)printf("%9u kernel threads created\n", vmm.v_kthreads); 586 (void)printf("%9u fork() calls\n", vmm.v_forks); 587 (void)printf("%9u vfork() calls\n", vmm.v_vforks); 588 (void)printf("%9u rfork() calls\n", vmm.v_rforks); 589 (void)printf("%9u swap pager pageins\n", vmm.v_swapin); 590 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 591 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout); 592 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 593 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein); 594 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 595 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 596 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 597 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 598 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 599 (void)printf("%9u pages reactivated\n", vmm.v_reactivated); 600 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 601 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 602 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 603 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 604 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans); 605 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults); 606 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 607 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages); 608 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 609 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 610 (void)printf("%9u pages freed\n", vmm.v_tfree); 611 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree); 612 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 613 (void)printf("%9u pages active\n", vms.v_active_count); 614 (void)printf("%9u pages inactive\n", vms.v_inactive_count); 615 (void)printf("%9u pages in VM cache\n", vms.v_cache_count); 616 (void)printf("%9u pages wired down\n", vms.v_wire_count); 617 (void)printf("%9u pages free\n", vms.v_free_count); 618 (void)printf("%9u bytes per page\n", vms.v_page_size); 619 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 620 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 621 nchstats.ncs_badhits + nchstats.ncs_falsehits + 622 nchstats.ncs_miss + nchstats.ncs_long; 623 (void)printf("%9ld total name lookups\n", nchtotal); 624 (void)printf( 625 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 626 "", PCT(nchstats.ncs_goodhits, nchtotal), 627 PCT(nchstats.ncs_neghits, nchtotal), 628 PCT(nchstats.ncs_pass2, nchtotal)); 629 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 630 PCT(nchstats.ncs_badhits, nchtotal), 631 PCT(nchstats.ncs_falsehits, nchtotal), 632 PCT(nchstats.ncs_long, nchtotal)); 633 } 634 635 #ifdef notyet 636 void 637 doforkst(void) 638 { 639 struct forkstat fks; 640 641 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 642 (void)printf("%d forks, %d pages, average %.2f\n", 643 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 644 (void)printf("%d vforks, %d pages, average %.2f\n", 645 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 646 } 647 #endif 648 649 static void 650 devstats(void) 651 { 652 register int dn, state; 653 long double transfers_per_second; 654 long double busy_seconds; 655 long tmp; 656 657 for (state = 0; state < CPUSTATES; ++state) { 658 tmp = cur.cp_time[state]; 659 cur.cp_time[state] -= last.cp_time[state]; 660 last.cp_time[state] = tmp; 661 } 662 663 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 664 665 for (dn = 0; dn < num_devices; dn++) { 666 int di; 667 668 if ((dev_select[dn].selected == 0) 669 || (dev_select[dn].selected > maxshowdevs)) 670 continue; 671 672 di = dev_select[dn].position; 673 674 if (compute_stats(&cur.dinfo->devices[di], 675 &last.dinfo->devices[di], busy_seconds, 676 NULL, NULL, NULL, 677 NULL, &transfers_per_second, NULL, 678 NULL, NULL) != 0) 679 errx(1, "%s", devstat_errbuf); 680 681 printf("%3.0Lf ", transfers_per_second); 682 } 683 } 684 685 void 686 cpustats(void) 687 { 688 register int state; 689 double pct, total; 690 691 total = 0; 692 for (state = 0; state < CPUSTATES; ++state) 693 total += cur.cp_time[state]; 694 if (total) 695 pct = 100 / total; 696 else 697 pct = 0; 698 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 699 cur.cp_time[CP_NICE]) * pct); 700 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 701 cur.cp_time[CP_INTR]) * pct); 702 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 703 } 704 705 void 706 dointr(void) 707 { 708 register u_long *intrcnt, uptime; 709 register u_int64_t inttotal; 710 register int nintr, inamlen; 711 register char *intrname; 712 713 uptime = getuptime(); 714 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 715 inamlen = 716 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 717 intrcnt = malloc((size_t)nintr); 718 intrname = malloc((size_t)inamlen); 719 if (intrcnt == NULL || intrname == NULL) 720 errx(1, "malloc"); 721 kread(X_INTRCNT, intrcnt, (size_t)nintr); 722 kread(X_INTRNAMES, intrname, (size_t)inamlen); 723 (void)printf("interrupt total rate\n"); 724 inttotal = 0; 725 nintr /= sizeof(long); 726 while (--nintr >= 0) { 727 if (*intrcnt) 728 (void)printf("%-12s %20lu %10lu\n", intrname, 729 *intrcnt, *intrcnt / uptime); 730 intrname += strlen(intrname) + 1; 731 inttotal += *intrcnt++; 732 } 733 (void)printf("Total %20llu %10llu\n", inttotal, 734 inttotal / (u_int64_t) uptime); 735 } 736 737 #define MAX_KMSTATS 200 738 739 void 740 domem(void) 741 { 742 register struct kmembuckets *kp; 743 register struct malloc_type *ks; 744 register int i, j; 745 int len, size, first, nkms; 746 long totuse = 0, totfree = 0, totreq = 0; 747 const char *name; 748 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 749 char buf[1024]; 750 struct kmembuckets buckets[MINBUCKET + 16]; 751 752 #ifdef X_KMEMBUCKETS 753 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 754 #else 755 bzero(buckets, sizeof(buckets)); 756 #endif 757 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 758 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 759 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 760 &kmemstats[nkms], sizeof(kmemstats[0]))) 761 err(1, "kvm_read(%p)", (void *)kmsp); 762 if (sizeof(buf) != kvm_read(kd, 763 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 764 err(1, "kvm_read(%p)", 765 (void *)kmemstats[nkms].ks_shortdesc); 766 buf[sizeof(buf) - 1] = '\0'; 767 kmemstats[nkms].ks_shortdesc = strdup(buf); 768 kmsp = kmemstats[nkms].ks_next; 769 } 770 if (kmsp != NULL) 771 warnx("truncated to the first %d memory types", nkms); 772 (void)printf("Memory statistics by bucket size\n"); 773 (void)printf( 774 "Size In Use Free Requests HighWater Couldfree\n"); 775 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 776 if (kp->kb_calls == 0) 777 continue; 778 size = 1 << i; 779 if(size < 1024) 780 (void)printf("%4d",size); 781 else 782 (void)printf("%3dK",size>>10); 783 (void)printf(" %8ld %6ld %10lld %7ld %10ld\n", 784 kp->kb_total - kp->kb_totalfree, 785 kp->kb_totalfree, kp->kb_calls, 786 kp->kb_highwat, kp->kb_couldfree); 787 totfree += size * kp->kb_totalfree; 788 } 789 790 (void)printf("\nMemory usage type by bucket size\n"); 791 (void)printf("Size Type(s)\n"); 792 kp = &buckets[MINBUCKET]; 793 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 794 if (kp->kb_calls == 0) 795 continue; 796 first = 1; 797 len = 8; 798 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 799 if (ks->ks_calls == 0) 800 continue; 801 if ((ks->ks_size & j) == 0) 802 continue; 803 name = ks->ks_shortdesc; 804 len += 2 + strlen(name); 805 if (first && j < 1024) 806 printf("%4d %s", j, name); 807 else if (first) 808 printf("%3dK %s", j>>10, name); 809 else 810 printf(","); 811 if (len >= 79) { 812 printf("\n\t "); 813 len = 10 + strlen(name); 814 } 815 if (!first) 816 printf(" %s", name); 817 first = 0; 818 } 819 printf("\n"); 820 } 821 822 (void)printf( 823 "\nMemory statistics by type Type Kern\n"); 824 (void)printf( 825 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 826 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 827 if (ks->ks_calls == 0) 828 continue; 829 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 830 ks->ks_shortdesc, 831 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 832 (ks->ks_maxused + 1023) / 1024, 833 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 834 ks->ks_limblocks, ks->ks_mapblocks); 835 first = 1; 836 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 837 if ((ks->ks_size & j) == 0) 838 continue; 839 if (first) 840 printf(" "); 841 else 842 printf(","); 843 if(j<1024) 844 printf("%d",j); 845 else 846 printf("%dK",j>>10); 847 first = 0; 848 } 849 printf("\n"); 850 totuse += ks->ks_memuse; 851 totreq += ks->ks_calls; 852 } 853 (void)printf("\nMemory Totals: In Use Free Requests\n"); 854 (void)printf(" %7ldK %6ldK %8ld\n", 855 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 856 } 857 858 void 859 dozmem(void) 860 { 861 char *buf; 862 size_t bufsize; 863 864 buf = NULL; 865 bufsize = 1024; 866 for (;;) { 867 if ((buf = realloc(buf, bufsize)) == NULL) 868 err(1, "realloc()"); 869 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 870 break; 871 if (errno != ENOMEM) 872 err(1, "sysctl()"); 873 bufsize *= 2; 874 } 875 buf[bufsize] = '\0'; /* play it safe */ 876 (void)printf("%s\n\n", buf); 877 free(buf); 878 } 879 880 /* 881 * kread reads something from the kernel, given its nlist index. 882 */ 883 void 884 kread(int nlx, void *addr, size_t size) 885 { 886 char *sym; 887 888 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 889 sym = namelist[nlx].n_name; 890 if (*sym == '_') 891 ++sym; 892 errx(1, "symbol %s not defined", sym); 893 } 894 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 895 sym = namelist[nlx].n_name; 896 if (*sym == '_') 897 ++sym; 898 errx(1, "%s: %s", sym, kvm_geterr(kd)); 899 } 900 } 901 902 void 903 usage(void) 904 { 905 (void)fprintf(stderr, "%s%s", 906 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 907 " [-n devs] [disks]\n"); 908 exit(1); 909 } 910