vmstat - Allow sub-second intervals to be specified.
[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
MD
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 $
5be6fe29 36 * $DragonFly: src/usr.bin/vmstat/vmstat.c,v 1.23 2008/02/19 18:19:15 thomas Exp $
984263bc
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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/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>
f5d21610 58#include <kinfo.h>
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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[] = {
f5d21610 72#define X_BOOTTIME 0
2c9bc808 73 { "_boottime", 0, 0, 0, 0 },
f5d21610 74#define X_NCHSTATS 1
2c9bc808 75 { "_nchstats", 0, 0, 0, 0 },
4dfb4f32 76#define X_KMEMSTATISTICS 2
2c9bc808 77 { "_kmemstatistics", 0, 0, 0, 0 },
4dfb4f32 78#define X_ZLIST 3
2c9bc808 79 { "_zlist", 0, 0, 0, 0 },
984263bc 80#ifdef notyet
4dfb4f32 81#define X_DEFICIT 4
2c9bc808 82 { "_deficit", 0, 0, 0, 0 },
4dfb4f32 83#define X_FORKSTAT 5
2c9bc808 84 { "_forkstat", 0, 0, 0, 0 },
4dfb4f32 85#define X_REC 6
2c9bc808 86 { "_rectime", 0, 0, 0, 0 },
4dfb4f32 87#define X_PGIN 7
2c9bc808 88 { "_pgintime", 0, 0, 0, 0 },
4dfb4f32 89#define X_XSTATS 8
2c9bc808 90 { "_xstats", 0, 0, 0, 0 },
4dfb4f32 91#define X_END 9
984263bc 92#else
4dfb4f32 93#define X_END 4
984263bc 94#endif
2c9bc808 95 { "", 0, 0, 0, 0 },
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MD
96};
97
98struct statinfo cur, last;
99int num_devices, maxshowdevs;
100long generation;
101struct device_selection *dev_select;
102int num_selected;
103struct devstat_match *matches;
104int num_matches = 0;
105int num_devices_specified, num_selections;
106long select_generation;
107char **specified_devices;
108devstat_select_mode select_mode;
109
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110struct vmmeter vmm, ovmm;
111struct vmstats vms, ovms;
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112
113int winlines = 20;
114int nflag = 0;
bba17725 115int verbose = 0;
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116
117kvm_t *kd;
118
f5d21610
JS
119struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
120
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121#define FORKSTAT 0x01
122#define INTRSTAT 0x02
123#define MEMSTAT 0x04
124#define SUMSTAT 0x08
125#define TIMESTAT 0x10
126#define VMSTAT 0x20
127#define ZMEMSTAT 0x40
128
3c6b4125
JS
129static void cpustats(void);
130static void dointr(void);
131static void domem(void);
132static void dosum(void);
133static void dozmem(void);
2c9bc808
SW
134static void dovmstat(u_int, int);
135static void kread(int, void *, size_t);
3c6b4125 136static void usage(void);
2c9bc808 137static char **getdrivedata(char **);
3c6b4125 138static long getuptime(void);
2c9bc808
SW
139static void needhdr(int);
140static long pct(long, long);
3c6b4125 141
984263bc 142#ifdef notyet
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143static void dotimes(void); /* Not implemented */
144static void doforkst(void);
984263bc 145#endif
3c6b4125
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146static void printhdr(void);
147static void devstats(void);
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148
149int
2e134091 150main(int argc, char **argv)
984263bc 151{
2e134091 152 int c, todo;
29758f2e 153 u_int interval; /* milliseconds */
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154 int reps;
155 char *memf, *nlistf;
156 char errbuf[_POSIX2_LINE_MAX];
157
158 memf = nlistf = NULL;
159 interval = reps = todo = 0;
160 maxshowdevs = 2;
bba17725 161 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) {
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162 switch (c) {
163 case 'c':
164 reps = atoi(optarg);
165 break;
166 case 'f':
167#ifdef notyet
168 todo |= FORKSTAT;
169#else
170 errx(EX_USAGE, "sorry, -f is not (re)implemented yet");
171#endif
172 break;
173 case 'i':
174 todo |= INTRSTAT;
175 break;
176 case 'M':
177 memf = optarg;
178 break;
179 case 'm':
180 todo |= MEMSTAT;
181 break;
182 case 'N':
183 nlistf = optarg;
184 break;
185 case 'n':
186 nflag = 1;
187 maxshowdevs = atoi(optarg);
188 if (maxshowdevs < 0)
189 errx(1, "number of devices %d is < 0",
190 maxshowdevs);
191 break;
192 case 'p':
193 if (buildmatch(optarg, &matches, &num_matches) != 0)
194 errx(1, "%s", devstat_errbuf);
195 break;
196 case 's':
197 todo |= SUMSTAT;
198 break;
199 case 't':
200#ifdef notyet
201 todo |= TIMESTAT;
202#else
203 errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
204#endif
205 break;
bba17725
YT
206 case 'v':
207 ++verbose;
208 break;
984263bc 209 case 'w':
29758f2e 210 interval = (u_int)(strtod(optarg, NULL) * 1000.0);
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211 break;
212 case 'z':
213 todo |= ZMEMSTAT;
214 break;
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215 default:
216 usage();
217 }
218 }
219 argc -= optind;
220 argv += optind;
221
222 if (todo == 0)
223 todo = VMSTAT;
224
225 /*
226 * Discard setgid privileges if not the running kernel so that bad
227 * guys can't print interesting stuff from kernel memory.
228 */
229 if (nlistf != NULL || memf != NULL)
230 setgid(getgid());
231
232 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
233 if (kd == 0)
234 errx(1, "kvm_openfiles: %s", errbuf);
235
236 if ((c = kvm_nlist(kd, namelist)) != 0) {
237 if (c > 0) {
238 warnx("undefined symbols:");
3c6b4125 239 for (c = 0; c < (int)__arysize(namelist); c++)
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MD
240 if (namelist[c].n_type == 0)
241 fprintf(stderr, " %s",
242 namelist[c].n_name);
2e134091 243 fputc('\n', stderr);
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244 } else
245 warnx("kvm_nlist: %s", kvm_geterr(kd));
246 exit(1);
247 }
248
249 if (todo & VMSTAT) {
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250 struct winsize winsize;
251
252 /*
253 * Make sure that the userland devstat version matches the
254 * kernel devstat version. If not, exit and print a
255 * message informing the user of his mistake.
256 */
257 if (checkversion() < 0)
258 errx(1, "%s", devstat_errbuf);
259
260
261 argv = getdrivedata(argv);
262 winsize.ws_row = 0;
2e134091 263 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize);
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264 if (winsize.ws_row > 0)
265 winlines = winsize.ws_row;
266
267 }
268
269#define BACKWARD_COMPATIBILITY
270#ifdef BACKWARD_COMPATIBILITY
271 if (*argv) {
29758f2e 272 interval = (u_int)(strtod(*argv, NULL) * 1000.0);
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273 if (*++argv)
274 reps = atoi(*argv);
275 }
276#endif
277
278 if (interval) {
279 if (!reps)
280 reps = -1;
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MD
281 } else if (reps) {
282 interval = 1000;
283 }
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284
285#ifdef notyet
286 if (todo & FORKSTAT)
287 doforkst();
288#endif
289 if (todo & MEMSTAT)
290 domem();
291 if (todo & ZMEMSTAT)
292 dozmem();
293 if (todo & SUMSTAT)
294 dosum();
295#ifdef notyet
296 if (todo & TIMESTAT)
297 dotimes();
298#endif
299 if (todo & INTRSTAT)
300 dointr();
301 if (todo & VMSTAT)
302 dovmstat(interval, reps);
303 exit(0);
304}
305
3c6b4125 306static char **
1d1731fa 307getdrivedata(char **argv)
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308{
309 if ((num_devices = getnumdevs()) < 0)
310 errx(1, "%s", devstat_errbuf);
311
312 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
313 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
314 bzero(cur.dinfo, sizeof(struct devinfo));
315 bzero(last.dinfo, sizeof(struct devinfo));
316
317 if (getdevs(&cur) == -1)
318 errx(1, "%s", devstat_errbuf);
319
320 num_devices = cur.dinfo->numdevs;
321 generation = cur.dinfo->generation;
322
323 specified_devices = (char **)malloc(sizeof(char *));
324 for (num_devices_specified = 0; *argv; ++argv) {
325 if (isdigit(**argv))
326 break;
327 num_devices_specified++;
328 specified_devices = (char **)realloc(specified_devices,
329 sizeof(char *) *
330 num_devices_specified);
331 specified_devices[num_devices_specified - 1] = *argv;
332 }
333 dev_select = NULL;
334
335 if (nflag == 0 && maxshowdevs < num_devices_specified)
336 maxshowdevs = num_devices_specified;
337
338 /*
339 * People are generally only interested in disk statistics when
340 * they're running vmstat. So, that's what we're going to give
341 * them if they don't specify anything by default. We'll also give
342 * them any other random devices in the system so that we get to
343 * maxshowdevs devices, if that many devices exist. If the user
344 * specifies devices on the command line, either through a pattern
345 * match or by naming them explicitly, we will give the user only
346 * those devices.
347 */
348 if ((num_devices_specified == 0) && (num_matches == 0)) {
349 if (buildmatch("da", &matches, &num_matches) != 0)
350 errx(1, "%s", devstat_errbuf);
351
352 select_mode = DS_SELECT_ADD;
353 } else
354 select_mode = DS_SELECT_ONLY;
355
356 /*
357 * At this point, selectdevs will almost surely indicate that the
358 * device list has changed, so we don't look for return values of 0
359 * or 1. If we get back -1, though, there is an error.
360 */
361 if (selectdevs(&dev_select, &num_selected, &num_selections,
362 &select_generation, generation, cur.dinfo->devices,
363 num_devices, matches, num_matches, specified_devices,
364 num_devices_specified, select_mode,
365 maxshowdevs, 0) == -1)
366 errx(1, "%s", devstat_errbuf);
367
368 return(argv);
369}
370
3c6b4125 371static long
1d1731fa 372getuptime(void)
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MD
373{
374 static time_t now, boottime;
375 time_t uptime;
376
377 if (boottime == 0)
378 kread(X_BOOTTIME, &boottime, sizeof(boottime));
2e134091 379 time(&now);
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380 uptime = now - boottime;
381 if (uptime <= 0 || uptime > 60*60*24*365*10)
382 errx(1, "time makes no sense; namelist must be wrong");
383 return(uptime);
384}
385
f5d21610 386int hdrcnt;
984263bc 387
3c6b4125 388static void
1d1731fa 389dovmstat(u_int interval, int reps)
984263bc
MD
390{
391 struct vmtotal total;
984263bc 392 struct devinfo *tmp_dinfo;
e43bcaac
JG
393 size_t vmm_size = sizeof(vmm);
394 size_t vms_size = sizeof(vms);
395 size_t vmt_size = sizeof(total);
29758f2e 396 int initial = 1;
984263bc 397
2e134091 398 signal(SIGCONT, needhdr);
984263bc 399
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MD
400 for (hdrcnt = 1;;) {
401 if (!--hdrcnt)
402 printhdr();
f5d21610
JS
403 if (kinfo_get_sched_cputime(&cp_time))
404 err(1, "kinfo_get_sched_cputime");
984263bc
MD
405
406 tmp_dinfo = last.dinfo;
407 last.dinfo = cur.dinfo;
408 cur.dinfo = tmp_dinfo;
409 last.busy_time = cur.busy_time;
410
411 /*
412 * Here what we want to do is refresh our device stats.
413 * getdevs() returns 1 when the device list has changed.
414 * If the device list has changed, we want to go through
415 * the selection process again, in case a device that we
416 * were previously displaying has gone away.
417 */
418 switch (getdevs(&cur)) {
419 case -1:
420 errx(1, "%s", devstat_errbuf);
421 break;
422 case 1: {
423 int retval;
424
425 num_devices = cur.dinfo->numdevs;
426 generation = cur.dinfo->generation;
427
428 retval = selectdevs(&dev_select, &num_selected,
429 &num_selections, &select_generation,
430 generation, cur.dinfo->devices,
431 num_devices, matches, num_matches,
432 specified_devices,
433 num_devices_specified, select_mode,
434 maxshowdevs, 0);
435 switch (retval) {
436 case -1:
437 errx(1, "%s", devstat_errbuf);
438 break;
439 case 1:
440 printhdr();
441 break;
442 default:
443 break;
444 }
445 }
446 default:
447 break;
448 }
449
393dfc63
MD
450 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
451 perror("sysctlbyname: vm.vmstats");
452 exit(1);
984263bc 453 }
393dfc63 454 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
5f548a46 455 perror("sysctlbyname: vm.vmmeter");
393dfc63
MD
456 exit(1);
457 }
458 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) {
459 perror("sysctlbyname: vm.vmtotal");
460 exit(1);
461 }
2e134091 462 printf("%2d %1d %1d",
984263bc 463 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
393dfc63 464#define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10)
29758f2e 465#define rate(x) (initial ? (x) : ((x) * 1000 + interval / 2) / interval)
2e134091 466 printf(" %7ld %6ld ",
984263bc 467 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free));
2e134091 468 printf("%4lu ",
393dfc63 469 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults));
2e134091 470 printf("%3lu ",
393dfc63 471 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated));
2e134091 472 printf("%3lu ",
393dfc63
MD
473 (u_long)rate(vmm.v_swapin + vmm.v_vnodein -
474 (ovmm.v_swapin + ovmm.v_vnodein)));
2e134091 475 printf("%3lu ",
393dfc63
MD
476 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout -
477 (ovmm.v_swapout + ovmm.v_vnodeout)));
2e134091 478 printf("%3lu ",
393dfc63 479 (u_long)rate(vmm.v_tfree - ovmm.v_tfree));
2e134091 480 printf("%3lu ",
393dfc63 481 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages));
984263bc 482 devstats();
2e134091 483 printf("%4lu %4lu %3lu ",
393dfc63
MD
484 (u_long)rate(vmm.v_intr - ovmm.v_intr),
485 (u_long)rate(vmm.v_syscall - ovmm.v_syscall),
486 (u_long)rate(vmm.v_swtch - ovmm.v_swtch));
984263bc 487 cpustats();
2e134091
LF
488 printf("\n");
489 fflush(stdout);
984263bc
MD
490 if (reps >= 0 && --reps <= 0)
491 break;
393dfc63 492 ovmm = vmm;
29758f2e
MD
493 usleep(interval * 1000);
494 initial = 0;
984263bc
MD
495 }
496}
497
3c6b4125 498static void
1d1731fa 499printhdr(void)
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MD
500{
501 int i, num_shown;
502
503 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
2e134091 504 printf(" procs memory page%*s", 19, "");
984263bc 505 if (num_shown > 1)
2e134091 506 printf(" disks %*s", num_shown * 4 - 7, "");
984263bc 507 else if (num_shown == 1)
2e134091
LF
508 printf("disk");
509 printf(" faults cpu\n");
510 printf(" r b w avm fre flt re pi po fr sr ");
984263bc
MD
511 for (i = 0; i < num_devices; i++)
512 if ((dev_select[i].selected)
513 && (dev_select[i].selected <= maxshowdevs))
2e134091 514 printf("%c%c%d ", dev_select[i].device_name[0],
984263bc
MD
515 dev_select[i].device_name[1],
516 dev_select[i].unit_number);
2e134091 517 printf(" in sy cs us sy id\n");
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MD
518 hdrcnt = winlines - 2;
519}
520
521/*
522 * Force a header to be prepended to the next output.
523 */
3c6b4125
JS
524static void
525needhdr(__unused int signo)
984263bc
MD
526{
527
528 hdrcnt = 1;
529}
530
3c6b4125 531static long
1d1731fa 532pct(long top, long bot)
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MD
533{
534 long ans;
535
536 if (bot == 0)
537 return(0);
538 ans = (quad_t)top * 100 / bot;
539 return (ans);
540}
541
542#define PCT(top, bot) pct((long)(top), (long)(bot))
543
3c6b4125 544static void
1d1731fa 545dosum(void)
984263bc 546{
24e51f36 547 struct nchstats *nch_tmp, nchstats;
e43bcaac
JG
548 size_t vms_size = sizeof(vms);
549 size_t vmm_size = sizeof(vmm);
24e51f36
HP
550 int cpucnt;
551 u_long nchtotal;
552 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU;
984263bc 553
393dfc63
MD
554 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
555 perror("sysctlbyname: vm.vmstats");
556 exit(1);
557 }
558 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
559 perror("sysctlbyname: vm.vmstats");
560 exit(1);
24e51f36 561 }
2e134091
LF
562 printf("%9u cpu context switches\n", vmm.v_swtch);
563 printf("%9u device interrupts\n", vmm.v_intr);
564 printf("%9u software interrupts\n", vmm.v_soft);
565 printf("%9u traps\n", vmm.v_trap);
566 printf("%9u system calls\n", vmm.v_syscall);
567 printf("%9u kernel threads created\n", vmm.v_kthreads);
568 printf("%9u fork() calls\n", vmm.v_forks);
569 printf("%9u vfork() calls\n", vmm.v_vforks);
570 printf("%9u rfork() calls\n", vmm.v_rforks);
571 printf("%9u exec() calls\n", vmm.v_exec);
572 printf("%9u swap pager pageins\n", vmm.v_swapin);
573 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin);
574 printf("%9u swap pager pageouts\n", vmm.v_swapout);
575 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout);
576 printf("%9u vnode pager pageins\n", vmm.v_vnodein);
577 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin);
578 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout);
579 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout);
580 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups);
581 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages);
582 printf("%9u pages reactivated\n", vmm.v_reactivated);
583 printf("%9u copy-on-write faults\n", vmm.v_cow_faults);
584 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim);
585 printf("%9u zero fill pages zeroed\n", vmm.v_zfod);
586 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod);
587 printf("%9u intransit blocking page faults\n", vmm.v_intrans);
588 printf("%9u total VM faults taken\n", vmm.v_vm_faults);
589 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages);
590 printf("%9u pages affected by fork()\n", vmm.v_forkpages);
591 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages);
592 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages);
593 printf("%9u pages freed\n", vmm.v_tfree);
594 printf("%9u pages freed by daemon\n", vmm.v_dfree);
595 printf("%9u pages freed by exiting processes\n", vmm.v_pfree);
596 printf("%9u pages active\n", vms.v_active_count);
597 printf("%9u pages inactive\n", vms.v_inactive_count);
598 printf("%9u pages in VM cache\n", vms.v_cache_count);
599 printf("%9u pages wired down\n", vms.v_wire_count);
600 printf("%9u pages free\n", vms.v_free_count);
601 printf("%9u bytes per page\n", vms.v_page_size);
24e51f36
HP
602
603 if ((nch_tmp = malloc(nch_size)) == NULL) {
604 perror("malloc");
605 exit(1);
606 } else {
607 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) {
608 perror("sysctlbyname vfs.cache.nchstats");
609 free(nch_tmp);
610 exit(1);
611 } else {
612 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) {
613 perror("realloc");
614 exit(1);
615 }
616 }
617 }
618
619 cpucnt = nch_size / sizeof(struct nchstats);
620 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt);
621
984263bc
MD
622 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
623 nchstats.ncs_badhits + nchstats.ncs_falsehits +
624 nchstats.ncs_miss + nchstats.ncs_long;
2e134091
LF
625 printf("%9ld total name lookups\n", nchtotal);
626 printf(
984263bc
MD
627 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n",
628 "", PCT(nchstats.ncs_goodhits, nchtotal),
629 PCT(nchstats.ncs_neghits, nchtotal),
630 PCT(nchstats.ncs_pass2, nchtotal));
2e134091 631 printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "",
984263bc
MD
632 PCT(nchstats.ncs_badhits, nchtotal),
633 PCT(nchstats.ncs_falsehits, nchtotal),
634 PCT(nchstats.ncs_long, nchtotal));
24e51f36 635 free(nch_tmp);
984263bc
MD
636}
637
638#ifdef notyet
639void
1d1731fa 640doforkst(void)
984263bc
MD
641{
642 struct forkstat fks;
643
644 kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
2e134091 645 printf("%d forks, %d pages, average %.2f\n",
984263bc 646 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
2e134091 647 printf("%d vforks, %d pages, average %.2f\n",
984263bc
MD
648 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork);
649}
650#endif
651
652static void
1d1731fa 653devstats(void)
984263bc 654{
3c6b4125 655 int dn;
984263bc
MD
656 long double transfers_per_second;
657 long double busy_seconds;
f5d21610
JS
658
659 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
660 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
661 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
662 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
663 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
664 old_cp_time = cp_time;
984263bc
MD
665
666 busy_seconds = compute_etime(cur.busy_time, last.busy_time);
667
668 for (dn = 0; dn < num_devices; dn++) {
669 int di;
670
671 if ((dev_select[dn].selected == 0)
672 || (dev_select[dn].selected > maxshowdevs))
673 continue;
674
675 di = dev_select[dn].position;
676
677 if (compute_stats(&cur.dinfo->devices[di],
678 &last.dinfo->devices[di], busy_seconds,
679 NULL, NULL, NULL,
680 NULL, &transfers_per_second, NULL,
681 NULL, NULL) != 0)
682 errx(1, "%s", devstat_errbuf);
683
684 printf("%3.0Lf ", transfers_per_second);
685 }
686}
687
3c6b4125 688static void
1d1731fa 689cpustats(void)
984263bc 690{
f5d21610 691 uint64_t total;
3c6b4125 692 double totusage;
f5d21610
JS
693
694 total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
695 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle;
984263bc 696
984263bc 697 if (total)
3c6b4125 698 totusage = 100.0 / total;
984263bc 699 else
3c6b4125
JS
700 totusage = 0;
701 printf("%2.0f ",
702 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage);
703 printf("%2.0f ",
704 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage);
705 printf("%2.0f",
706 diff_cp_time.cp_idle * totusage);
984263bc
MD
707}
708
3c6b4125 709static void
1d1731fa 710dointr(void)
984263bc 711{
2e134091
LF
712 u_long *intrcnt, uptime;
713 u_int64_t inttotal;
4dfb4f32 714 size_t nintr, inamlen, i, size;
a73fdee8
MD
715 int nwidth;
716 char *intrstr;
717 char **intrname;
984263bc
MD
718
719 uptime = getuptime();
4dfb4f32
SS
720 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0)
721 errx(1, "sysctlbyname");
a73fdee8
MD
722 intrstr = malloc(inamlen);
723 if (intrstr == NULL)
4dfb4f32 724 err(1, "malloc");
a73fdee8
MD
725 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0);
726 for (nintr = 0, i = 0; i < inamlen; ++i) {
727 if (intrstr[i] == 0)
4dfb4f32 728 nintr++;
a73fdee8
MD
729 }
730 intrname = malloc(nintr * sizeof(char *));
731 for (i = 0; i < nintr; ++i) {
732 intrname[i] = intrstr;
733 intrstr += strlen(intrstr) + 1;
734 }
735
4dfb4f32 736 size = nintr * sizeof(*intrcnt);
53052796 737 intrcnt = calloc(nintr, sizeof(*intrcnt));
4dfb4f32
SS
738 if (intrcnt == NULL)
739 err(1, "malloc");
740 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0);
a73fdee8 741
bba17725 742 nwidth = 21;
a73fdee8
MD
743 for (i = 0; i < nintr; ++i) {
744 if (nwidth < (int)strlen(intrname[i]))
745 nwidth = (int)strlen(intrname[i]);
746 }
5be6fe29 747 if (verbose) nwidth += 8;
a73fdee8 748
5be6fe29
TN
749 printf("%-*.*s %11s %10s\n",
750 nwidth, nwidth, "interrupt", "total", "rate");
984263bc 751 inttotal = 0;
a73fdee8 752 for (i = 0; i < nintr; ++i) {
bba17725 753 int named;
5be6fe29 754 char *infop, irqinfo[72];
bba17725
YT
755
756 if ((named = strncmp(intrname[i], "irq", 3)) != 0 ||
757 intrcnt[i] > 0) {
758 infop = intrname[i];
759 if (verbose && named) {
760 snprintf(irqinfo, sizeof(irqinfo),
424e8382 761 "irq%zd: %s", i, intrname[i]);
bba17725
YT
762 infop = irqinfo;
763 }
a73fdee8 764 printf("%-*.*s %11lu %10lu\n",
bba17725 765 nwidth, nwidth, infop,
a73fdee8 766 intrcnt[i], intrcnt[i] / uptime);
24a1f87d 767 }
a73fdee8 768 inttotal += intrcnt[i];
984263bc 769 }
a73fdee8
MD
770 printf("%-*.*s %11llu %10llu\n",
771 nwidth, nwidth, "Total",
ce70368f 772 (long long)inttotal, (long long)(inttotal / uptime));
984263bc
MD
773}
774
775#define MAX_KMSTATS 200
776
2c9bc808 777static long
027557c6
MD
778cpuagg(long *ary)
779{
780 int i;
781 long ttl;
782
783 for (i = ttl = 0; i < SMP_MAXCPU; ++i)
784 ttl += ary[i];
785 return(ttl);
786}
787
3c6b4125 788static void
1d1731fa 789domem(void)
984263bc 790{
2e134091
LF
791 struct malloc_type *ks;
792 int i, j;
24e51f36 793 int first, nkms;
984263bc 794 long totuse = 0, totfree = 0, totreq = 0;
984263bc
MD
795 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp;
796 char buf[1024];
984263bc 797
984263bc
MD
798 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp));
799 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) {
800 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp,
801 &kmemstats[nkms], sizeof(kmemstats[0])))
802 err(1, "kvm_read(%p)", (void *)kmsp);
803 if (sizeof(buf) != kvm_read(kd,
804 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf)))
805 err(1, "kvm_read(%p)",
3c6b4125 806 kmemstats[nkms].ks_shortdesc);
984263bc
MD
807 buf[sizeof(buf) - 1] = '\0';
808 kmemstats[nkms].ks_shortdesc = strdup(buf);
809 kmsp = kmemstats[nkms].ks_next;
810 }
811 if (kmsp != NULL)
812 warnx("truncated to the first %d memory types", nkms);
984263bc 813
2e134091 814 printf(
984263bc 815 "\nMemory statistics by type Type Kern\n");
2e134091 816 printf(
8e98fb08 817" Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
984263bc
MD
818 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) {
819 if (ks->ks_calls == 0)
820 continue;
ce70368f 821 printf("%19s%6ld%6ldK%7ldK%7ldK%9jd%5u%6u",
984263bc 822 ks->ks_shortdesc,
027557c6 823 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024,
984263bc 824 (ks->ks_maxused + 1023) / 1024,
ce70368f 825 (ks->ks_limit + 1023) / 1024, (intmax_t)ks->ks_calls,
984263bc
MD
826 ks->ks_limblocks, ks->ks_mapblocks);
827 first = 1;
828 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
829 if ((ks->ks_size & j) == 0)
830 continue;
831 if (first)
832 printf(" ");
833 else
834 printf(",");
835 if(j<1024)
836 printf("%d",j);
837 else
838 printf("%dK",j>>10);
839 first = 0;
840 }
841 printf("\n");
027557c6 842 totuse += cpuagg(ks->ks_memuse);
984263bc
MD
843 totreq += ks->ks_calls;
844 }
2e134091
LF
845 printf("\nMemory Totals: In Use Free Requests\n");
846 printf(" %7ldK %6ldK %8ld\n",
984263bc
MD
847 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
848}
849
3c6b4125 850static void
1d1731fa 851dozmem(void)
984263bc
MD
852{
853 char *buf;
854 size_t bufsize;
855
856 buf = NULL;
857 bufsize = 1024;
858 for (;;) {
859 if ((buf = realloc(buf, bufsize)) == NULL)
860 err(1, "realloc()");
eecd52b2 861 if (sysctlbyname("vm.zone", buf, &bufsize, NULL, 0) == 0)
984263bc
MD
862 break;
863 if (errno != ENOMEM)
864 err(1, "sysctl()");
865 bufsize *= 2;
866 }
867 buf[bufsize] = '\0'; /* play it safe */
2e134091 868 printf("%s\n\n", buf);
984263bc
MD
869 free(buf);
870}
871
872/*
873 * kread reads something from the kernel, given its nlist index.
874 */
3c6b4125 875static void
1d1731fa 876kread(int nlx, void *addr, size_t size)
984263bc 877{
f5d21610 878 const char *sym;
984263bc
MD
879
880 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
881 sym = namelist[nlx].n_name;
882 if (*sym == '_')
883 ++sym;
884 errx(1, "symbol %s not defined", sym);
885 }
3c6b4125 886 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) {
984263bc
MD
887 sym = namelist[nlx].n_name;
888 if (*sym == '_')
889 ++sym;
890 errx(1, "%s: %s", sym, kvm_geterr(kd));
891 }
892}
893
3c6b4125 894static void
1d1731fa 895usage(void)
984263bc 896{
2e134091 897 fprintf(stderr, "%s%s",
bba17725 898 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n",
984263bc
MD
899 " [-n devs] [disks]\n");
900 exit(1);
901}