Do some fairly major include file cleanups to further separate kernelland
[dragonfly.git] / usr.bin / vmstat / vmstat.c
CommitLineData
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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.
1de703da
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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 $
05220613 36 * $DragonFly: src/usr.bin/vmstat/vmstat.c,v 1.9 2003/11/21 22:46:15 dillon Exp $
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37 */
38
cc970022 39#define _KERNEL_STRUCTURES
05220613 40
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41#include <sys/param.h>
42#include <sys/time.h>
05220613 43#include <sys/user.h>
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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
5a190a5c 71static struct nlist namelist[] = {
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72#define X_CPTIME 0
73 { "_cp_time" },
393dfc63 74#define X_BOOTTIME 1
984263bc 75 { "_boottime" },
393dfc63 76#define X_HZ 2
984263bc 77 { "_hz" },
393dfc63 78#define X_STATHZ 3
984263bc 79 { "_stathz" },
393dfc63 80#define X_NCHSTATS 4
984263bc 81 { "_nchstats" },
393dfc63 82#define X_INTRNAMES 5
984263bc 83 { "_intrnames" },
393dfc63 84#define X_EINTRNAMES 6
984263bc 85 { "_eintrnames" },
5a190a5c 86#define X_INTRCNT 7
984263bc 87 { "_intrcnt" },
393dfc63 88#define X_EINTRCNT 8
984263bc 89 { "_eintrcnt" },
393dfc63 90#define X_KMEMSTATISTICS 9
984263bc 91 { "_kmemstatistics" },
05220613 92#define X_ZLIST 10
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93 { "_zlist" },
94#ifdef notyet
05220613 95#define X_DEFICIT 11
984263bc 96 { "_deficit" },
05220613 97#define X_FORKSTAT 12
984263bc 98 { "_forkstat" },
05220613 99#define X_REC 13
984263bc 100 { "_rectime" },
05220613 101#define X_PGIN 14
984263bc 102 { "_pgintime" },
05220613 103#define X_XSTATS 15
984263bc 104 { "_xstats" },
05220613 105#define X_END 16
984263bc 106#else
05220613 107#define X_END 11
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108#endif
109 { "" },
110};
111
112struct statinfo cur, last;
113int num_devices, maxshowdevs;
114long generation;
115struct device_selection *dev_select;
116int num_selected;
117struct devstat_match *matches;
118int num_matches = 0;
119int num_devices_specified, num_selections;
120long select_generation;
121char **specified_devices;
122devstat_select_mode select_mode;
123
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124struct vmmeter vmm, ovmm;
125struct vmstats vms, ovms;
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126
127int winlines = 20;
128int nflag = 0;
129
130kvm_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
140void cpustats(), dointr(), domem(), dosum(), dozmem();
141void dovmstat(), kread(), usage();
142#ifdef notyet
143void dotimes(), doforkst();
144#endif
1d1731fa 145void printhdr(void);
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146static void devstats();
147
148int
1d1731fa 149main(register int argc, register char **argv)
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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
304char **
1d1731fa 305getdrivedata(char **argv)
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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
369long
1d1731fa 370getuptime(void)
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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
384int hz, hdrcnt;
385
386void
1d1731fa 387dovmstat(u_int interval, int reps)
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388{
389 struct vmtotal total;
390 time_t uptime, halfuptime;
391 struct devinfo *tmp_dinfo;
392 void needhdr();
393 int mib[2];
394 size_t size;
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MD
395 int vmm_size = sizeof(vmm);
396 int vms_size = sizeof(vms);
397 int vmt_size = sizeof(total);
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398
399 uptime = getuptime();
400 halfuptime = uptime / 2;
401 (void)signal(SIGCONT, needhdr);
402
403 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0)
404 kread(X_STATHZ, &hz, sizeof(hz));
405 if (!hz)
406 kread(X_HZ, &hz, sizeof(hz));
407
408 for (hdrcnt = 1;;) {
409 if (!--hdrcnt)
410 printhdr();
411 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time));
412
413 tmp_dinfo = last.dinfo;
414 last.dinfo = cur.dinfo;
415 cur.dinfo = tmp_dinfo;
416 last.busy_time = cur.busy_time;
417
418 /*
419 * Here what we want to do is refresh our device stats.
420 * getdevs() returns 1 when the device list has changed.
421 * If the device list has changed, we want to go through
422 * the selection process again, in case a device that we
423 * were previously displaying has gone away.
424 */
425 switch (getdevs(&cur)) {
426 case -1:
427 errx(1, "%s", devstat_errbuf);
428 break;
429 case 1: {
430 int retval;
431
432 num_devices = cur.dinfo->numdevs;
433 generation = cur.dinfo->generation;
434
435 retval = selectdevs(&dev_select, &num_selected,
436 &num_selections, &select_generation,
437 generation, cur.dinfo->devices,
438 num_devices, matches, num_matches,
439 specified_devices,
440 num_devices_specified, select_mode,
441 maxshowdevs, 0);
442 switch (retval) {
443 case -1:
444 errx(1, "%s", devstat_errbuf);
445 break;
446 case 1:
447 printhdr();
448 break;
449 default:
450 break;
451 }
452 }
453 default:
454 break;
455 }
456
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457 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
458 perror("sysctlbyname: vm.vmstats");
459 exit(1);
984263bc 460 }
393dfc63 461 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
5f548a46 462 perror("sysctlbyname: vm.vmmeter");
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463 exit(1);
464 }
465 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) {
466 perror("sysctlbyname: vm.vmtotal");
467 exit(1);
468 }
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469 (void)printf("%2d %1d %1d",
470 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
393dfc63 471#define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10)
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472#define rate(x) (((x) + halfuptime) / uptime) /* round */
473 (void)printf(" %7ld %6ld ",
474 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free));
475 (void)printf("%4lu ",
393dfc63 476 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults));
984263bc 477 (void)printf("%3lu ",
393dfc63 478 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated));
984263bc 479 (void)printf("%3lu ",
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480 (u_long)rate(vmm.v_swapin + vmm.v_vnodein -
481 (ovmm.v_swapin + ovmm.v_vnodein)));
984263bc 482 (void)printf("%3lu ",
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483 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout -
484 (ovmm.v_swapout + ovmm.v_vnodeout)));
984263bc 485 (void)printf("%3lu ",
393dfc63 486 (u_long)rate(vmm.v_tfree - ovmm.v_tfree));
984263bc 487 (void)printf("%3lu ",
393dfc63 488 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages));
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489 devstats();
490 (void)printf("%4lu %4lu %3lu ",
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491 (u_long)rate(vmm.v_intr - ovmm.v_intr),
492 (u_long)rate(vmm.v_syscall - ovmm.v_syscall),
493 (u_long)rate(vmm.v_swtch - ovmm.v_swtch));
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494 cpustats();
495 (void)printf("\n");
496 (void)fflush(stdout);
497 if (reps >= 0 && --reps <= 0)
498 break;
393dfc63 499 ovmm = vmm;
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500 uptime = interval;
501 /*
502 * We round upward to avoid losing low-frequency events
503 * (i.e., >= 1 per interval but < 1 per second).
504 */
505 if (interval != 1)
506 halfuptime = (uptime + 1) / 2;
507 else
508 halfuptime = 0;
509 (void)sleep(interval);
510 }
511}
512
513void
1d1731fa 514printhdr(void)
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515{
516 int i, num_shown;
517
518 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
519 (void)printf(" procs memory page%*s", 19, "");
520 if (num_shown > 1)
521 (void)printf(" disks %*s", num_shown * 4 - 7, "");
522 else if (num_shown == 1)
523 (void)printf("disk");
524 (void)printf(" faults cpu\n");
525 (void)printf(" r b w avm fre flt re pi po fr sr ");
526 for (i = 0; i < num_devices; i++)
527 if ((dev_select[i].selected)
528 && (dev_select[i].selected <= maxshowdevs))
529 (void)printf("%c%c%d ", dev_select[i].device_name[0],
530 dev_select[i].device_name[1],
531 dev_select[i].unit_number);
532 (void)printf(" in sy cs us sy id\n");
533 hdrcnt = winlines - 2;
534}
535
536/*
537 * Force a header to be prepended to the next output.
538 */
539void
1d1731fa 540needhdr(void)
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541{
542
543 hdrcnt = 1;
544}
545
984263bc 546long
1d1731fa 547pct(long top, long bot)
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548{
549 long ans;
550
551 if (bot == 0)
552 return(0);
553 ans = (quad_t)top * 100 / bot;
554 return (ans);
555}
556
557#define PCT(top, bot) pct((long)(top), (long)(bot))
558
559void
1d1731fa 560dosum(void)
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561{
562 struct nchstats nchstats;
563 long nchtotal;
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564 int vms_size = sizeof(vms);
565 int vmm_size = sizeof(vmm);
984263bc 566
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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 swap pager pageins\n", vmm.v_swapin);
585 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin);
586 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout);
587 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout);
588 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein);
589 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin);
590 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout);
591 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout);
592 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups);
593 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages);
594 (void)printf("%9u pages reactivated\n", vmm.v_reactivated);
595 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults);
596 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim);
597 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod);
598 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod);
599 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans);
600 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults);
601 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages);
602 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages);
603 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages);
604 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages);
605 (void)printf("%9u pages freed\n", vmm.v_tfree);
606 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree);
607 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree);
608 (void)printf("%9u pages active\n", vms.v_active_count);
609 (void)printf("%9u pages inactive\n", vms.v_inactive_count);
610 (void)printf("%9u pages in VM cache\n", vms.v_cache_count);
611 (void)printf("%9u pages wired down\n", vms.v_wire_count);
612 (void)printf("%9u pages free\n", vms.v_free_count);
613 (void)printf("%9u bytes per page\n", vms.v_page_size);
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MD
614 kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
615 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
616 nchstats.ncs_badhits + nchstats.ncs_falsehits +
617 nchstats.ncs_miss + nchstats.ncs_long;
618 (void)printf("%9ld total name lookups\n", nchtotal);
619 (void)printf(
620 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n",
621 "", PCT(nchstats.ncs_goodhits, nchtotal),
622 PCT(nchstats.ncs_neghits, nchtotal),
623 PCT(nchstats.ncs_pass2, nchtotal));
624 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "",
625 PCT(nchstats.ncs_badhits, nchtotal),
626 PCT(nchstats.ncs_falsehits, nchtotal),
627 PCT(nchstats.ncs_long, nchtotal));
628}
629
630#ifdef notyet
631void
1d1731fa 632doforkst(void)
984263bc
MD
633{
634 struct forkstat fks;
635
636 kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
637 (void)printf("%d forks, %d pages, average %.2f\n",
638 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
639 (void)printf("%d vforks, %d pages, average %.2f\n",
640 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork);
641}
642#endif
643
644static void
1d1731fa 645devstats(void)
984263bc
MD
646{
647 register int dn, state;
648 long double transfers_per_second;
649 long double busy_seconds;
650 long tmp;
651
652 for (state = 0; state < CPUSTATES; ++state) {
653 tmp = cur.cp_time[state];
654 cur.cp_time[state] -= last.cp_time[state];
655 last.cp_time[state] = tmp;
656 }
657
658 busy_seconds = compute_etime(cur.busy_time, last.busy_time);
659
660 for (dn = 0; dn < num_devices; dn++) {
661 int di;
662
663 if ((dev_select[dn].selected == 0)
664 || (dev_select[dn].selected > maxshowdevs))
665 continue;
666
667 di = dev_select[dn].position;
668
669 if (compute_stats(&cur.dinfo->devices[di],
670 &last.dinfo->devices[di], busy_seconds,
671 NULL, NULL, NULL,
672 NULL, &transfers_per_second, NULL,
673 NULL, NULL) != 0)
674 errx(1, "%s", devstat_errbuf);
675
676 printf("%3.0Lf ", transfers_per_second);
677 }
678}
679
680void
1d1731fa 681cpustats(void)
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682{
683 register int state;
684 double pct, total;
685
686 total = 0;
687 for (state = 0; state < CPUSTATES; ++state)
688 total += cur.cp_time[state];
689 if (total)
690 pct = 100 / total;
691 else
692 pct = 0;
693 (void)printf("%2.0f ", (cur.cp_time[CP_USER] +
694 cur.cp_time[CP_NICE]) * pct);
695 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] +
696 cur.cp_time[CP_INTR]) * pct);
697 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct);
698}
699
700void
1d1731fa 701dointr(void)
984263bc
MD
702{
703 register u_long *intrcnt, uptime;
704 register u_int64_t inttotal;
705 register int nintr, inamlen;
706 register char *intrname;
707
708 uptime = getuptime();
709 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value;
710 inamlen =
711 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value;
712 intrcnt = malloc((size_t)nintr);
713 intrname = malloc((size_t)inamlen);
714 if (intrcnt == NULL || intrname == NULL)
715 errx(1, "malloc");
716 kread(X_INTRCNT, intrcnt, (size_t)nintr);
717 kread(X_INTRNAMES, intrname, (size_t)inamlen);
718 (void)printf("interrupt total rate\n");
719 inttotal = 0;
720 nintr /= sizeof(long);
721 while (--nintr >= 0) {
722 if (*intrcnt)
723 (void)printf("%-12s %20lu %10lu\n", intrname,
724 *intrcnt, *intrcnt / uptime);
725 intrname += strlen(intrname) + 1;
726 inttotal += *intrcnt++;
727 }
728 (void)printf("Total %20llu %10llu\n", inttotal,
729 inttotal / (u_int64_t) uptime);
730}
731
732#define MAX_KMSTATS 200
733
027557c6
MD
734static
735long
736cpuagg(long *ary)
737{
738 int i;
739 long ttl;
740
741 for (i = ttl = 0; i < SMP_MAXCPU; ++i)
742 ttl += ary[i];
743 return(ttl);
744}
745
984263bc 746void
1d1731fa 747domem(void)
984263bc 748{
984263bc
MD
749 register struct malloc_type *ks;
750 register int i, j;
751 int len, size, first, nkms;
752 long totuse = 0, totfree = 0, totreq = 0;
753 const char *name;
754 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp;
755 char buf[1024];
984263bc 756
984263bc
MD
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);
984263bc
MD
772
773 (void)printf(
774 "\nMemory statistics by type Type Kern\n");
775 (void)printf(
776" Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
777 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) {
778 if (ks->ks_calls == 0)
779 continue;
780 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u",
781 ks->ks_shortdesc,
027557c6 782 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024,
984263bc
MD
783 (ks->ks_maxused + 1023) / 1024,
784 (ks->ks_limit + 1023) / 1024, ks->ks_calls,
785 ks->ks_limblocks, ks->ks_mapblocks);
786 first = 1;
787 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
788 if ((ks->ks_size & j) == 0)
789 continue;
790 if (first)
791 printf(" ");
792 else
793 printf(",");
794 if(j<1024)
795 printf("%d",j);
796 else
797 printf("%dK",j>>10);
798 first = 0;
799 }
800 printf("\n");
027557c6 801 totuse += cpuagg(ks->ks_memuse);
984263bc
MD
802 totreq += ks->ks_calls;
803 }
804 (void)printf("\nMemory Totals: In Use Free Requests\n");
805 (void)printf(" %7ldK %6ldK %8ld\n",
806 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
807}
808
809void
1d1731fa 810dozmem(void)
984263bc
MD
811{
812 char *buf;
813 size_t bufsize;
814
815 buf = NULL;
816 bufsize = 1024;
817 for (;;) {
818 if ((buf = realloc(buf, bufsize)) == NULL)
819 err(1, "realloc()");
820 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0)
821 break;
822 if (errno != ENOMEM)
823 err(1, "sysctl()");
824 bufsize *= 2;
825 }
826 buf[bufsize] = '\0'; /* play it safe */
827 (void)printf("%s\n\n", buf);
828 free(buf);
829}
830
831/*
832 * kread reads something from the kernel, given its nlist index.
833 */
834void
1d1731fa 835kread(int nlx, void *addr, size_t size)
984263bc
MD
836{
837 char *sym;
838
839 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
840 sym = namelist[nlx].n_name;
841 if (*sym == '_')
842 ++sym;
843 errx(1, "symbol %s not defined", sym);
844 }
845 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
846 sym = namelist[nlx].n_name;
847 if (*sym == '_')
848 ++sym;
849 errx(1, "%s: %s", sym, kvm_geterr(kd));
850 }
851}
852
853void
1d1731fa 854usage(void)
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MD
855{
856 (void)fprintf(stderr, "%s%s",
857 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n",
858 " [-n devs] [disks]\n");
859 exit(1);
860}