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build - Separate out CFLAGS for kernel & module build
[dragonfly.git] / usr.bin / vmstat / vmstat.c
blob8c36f4a19046a7fd1bd10ddf62eca494d900fc31
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#) Copyright (c) 1980, 1986, 1991, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)vmstat.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/vmstat/vmstat.c,v 1.38.2.4 2001/07/31 19:52:41 tmm Exp $
32 */
33
34 #include <sys/user.h>
35 #include <sys/param.h>
36 #include <sys/time.h>
37 #include <sys/uio.h>
38 #include <sys/namei.h>
39 #include <sys/malloc.h>
40 #include <sys/signal.h>
41 #include <sys/fcntl.h>
42 #include <sys/ioctl.h>
43 #include <sys/sysctl.h>
44 #include <sys/vmmeter.h>
45 #include <sys/interrupt.h>
46
47 #include <vm/vm_param.h>
48 #include <vm/vm_zone.h>
49
50 #include <ctype.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <kinfo.h>
54 #include <kvm.h>
55 #include <limits.h>
56 #include <nlist.h>
57 #include <paths.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include <sysexits.h>
62 #include <time.h>
63 #include <unistd.h>
64 #include <devstat.h>
65
66 static struct nlist namelist[] = {
67 #define X_BOOTTIME 0
68 { "_boottime", 0, 0, 0, 0 },
69 #define X_NCHSTATS 1
70 { "_nchstats", 0, 0, 0, 0 },
71 #define X_KMEMSTATISTICS 2
72 { "_kmemstatistics", 0, 0, 0, 0 },
73 #define X_ZLIST 3
74 { "_zlist", 0, 0, 0, 0 },
75 #ifdef notyet
76 #define X_DEFICIT 4
77 { "_deficit", 0, 0, 0, 0 },
78 #define X_FORKSTAT 5
79 { "_forkstat", 0, 0, 0, 0 },
80 #define X_REC 6
81 { "_rectime", 0, 0, 0, 0 },
82 #define X_PGIN 7
83 { "_pgintime", 0, 0, 0, 0 },
84 #define X_XSTATS 8
85 { "_xstats", 0, 0, 0, 0 },
86 #define X_END 9
87 #else
88 #define X_END 4
89 #endif
90 { "", 0, 0, 0, 0 },
91 };
92
93 #define ONEMB (1024L * 1024L)
94 #define ONEKB (1024L)
95
96 LIST_HEAD(zlist, vm_zone);
97
98 struct statinfo cur, last;
99 int num_devices, maxshowdevs;
100 long generation;
101 struct device_selection *dev_select;
102 int num_selected;
103 struct devstat_match *matches;
104 int num_matches = 0;
105 int num_devices_specified, num_selections;
106 long select_generation;
107 char **specified_devices;
108 devstat_select_mode select_mode;
109
110 struct vmmeter vmm, ovmm;
111 struct vmstats vms, ovms;
112
113 int winlines = 20;
114 int nflag = 0;
115 int verbose = 0;
116
117 kvm_t *kd;
118
119 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
120
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
129 static void cpustats(void);
130 static void dointr(void);
131 static void domem(void);
132 static void dosum(void);
133 static void dozmem(u_int interval, int reps);
134 static void dovmstat(u_int, int);
135 static void kread(int, void *, size_t);
136 static void usage(void);
137 static char **getdrivedata(char **);
138 static long getuptime(void);
139 static void needhdr(int);
140 static long pct(long, long);
141
142 #ifdef notyet
143 static void dotimes(void); /* Not implemented */
144 static void doforkst(void);
145 #endif
146 static void printhdr(void);
147 static const char *formatnum(intmax_t value, int width);
148 static void devstats(int dooutput);
149
150 int
151 main(int argc, char **argv)
152 {
153 int c, todo;
154 u_int interval; /* milliseconds */
155 int reps;
156 char *memf, *nlistf;
157 char errbuf[_POSIX2_LINE_MAX];
158
159 memf = nlistf = NULL;
160 interval = reps = todo = 0;
161 maxshowdevs = 2;
162 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) {
163 switch (c) {
164 case 'c':
165 reps = atoi(optarg);
166 break;
167 case 'f':
168 #ifdef notyet
169 todo |= FORKSTAT;
170 #else
171 errx(EX_USAGE, "sorry, -f is not (re)implemented yet");
172 #endif
173 break;
174 case 'i':
175 todo |= INTRSTAT;
176 break;
177 case 'M':
178 memf = optarg;
179 break;
180 case 'm':
181 todo |= MEMSTAT;
182 break;
183 case 'N':
184 nlistf = optarg;
185 break;
186 case 'n':
187 nflag = 1;
188 maxshowdevs = atoi(optarg);
189 if (maxshowdevs < 0)
190 errx(1, "number of devices %d is < 0",
191 maxshowdevs);
192 break;
193 case 'p':
194 if (buildmatch(optarg, &matches, &num_matches) != 0)
195 errx(1, "%s", devstat_errbuf);
196 break;
197 case 's':
198 todo |= SUMSTAT;
199 break;
200 case 't':
201 #ifdef notyet
202 todo |= TIMESTAT;
203 #else
204 errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
205 #endif
206 break;
207 case 'v':
208 ++verbose;
209 break;
210 case 'w':
211 interval = (u_int)(strtod(optarg, NULL) * 1000.0);
212 break;
213 case 'z':
214 todo |= ZMEMSTAT;
215 break;
216 default:
217 usage();
218 }
219 }
220 argc -= optind;
221 argv += optind;
222
223 if (todo == 0)
224 todo = VMSTAT;
225
226 /*
227 * Discard setgid privileges if not the running kernel so that bad
228 * guys can't print interesting stuff from kernel memory.
229 */
230 if (nlistf != NULL || memf != NULL)
231 setgid(getgid());
232
233 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
234 if (kd == NULL)
235 errx(1, "kvm_openfiles: %s", errbuf);
236
237 if ((c = kvm_nlist(kd, namelist)) != 0) {
238 if (c > 0) {
239 warnx("undefined symbols:");
240 for (c = 0; c < (int)__arysize(namelist); c++)
241 if (namelist[c].n_type == 0)
242 fprintf(stderr, " %s",
243 namelist[c].n_name);
244 fputc('\n', stderr);
245 } else
246 warnx("kvm_nlist: %s", kvm_geterr(kd));
247 exit(1);
248 }
249
250 if (todo & VMSTAT) {
251 struct winsize winsize;
252
253 /*
254 * Make sure that the userland devstat version matches the
255 * kernel devstat version. If not, exit and print a
256 * message informing the user of his mistake.
257 */
258 if (checkversion() < 0)
259 errx(1, "%s", devstat_errbuf);
260
261
262 argv = getdrivedata(argv);
263 winsize.ws_row = 0;
264 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize);
265 if (winsize.ws_row > 0)
266 winlines = winsize.ws_row;
267
268 }
269
270 #define BACKWARD_COMPATIBILITY
271 #ifdef BACKWARD_COMPATIBILITY
272 if (*argv) {
273 interval = (u_int)(strtod(*argv, NULL) * 1000.0);
274 if (*++argv)
275 reps = atoi(*argv);
276 }
277 #endif
278
279 if (interval) {
280 if (!reps)
281 reps = -1;
282 } else if (reps) {
283 interval = 1000;
284 }
285
286 #ifdef notyet
287 if (todo & FORKSTAT)
288 doforkst();
289 #endif
290 if (todo & MEMSTAT)
291 domem();
292 if (todo & ZMEMSTAT)
293 dozmem(interval, reps);
294 if (todo & SUMSTAT)
295 dosum();
296 #ifdef notyet
297 if (todo & TIMESTAT)
298 dotimes();
299 #endif
300 if (todo & INTRSTAT)
301 dointr();
302 if (todo & VMSTAT)
303 dovmstat(interval, reps);
304 exit(0);
305 }
306
307 static char **
308 getdrivedata(char **argv)
309 {
310 if ((num_devices = getnumdevs()) < 0)
311 errx(1, "%s", devstat_errbuf);
312
313 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
314 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
315 bzero(cur.dinfo, sizeof(struct devinfo));
316 bzero(last.dinfo, sizeof(struct devinfo));
317
318 if (getdevs(&cur) == -1)
319 errx(1, "%s", devstat_errbuf);
320
321 num_devices = cur.dinfo->numdevs;
322 generation = cur.dinfo->generation;
323
324 specified_devices = (char **)malloc(sizeof(char *));
325 for (num_devices_specified = 0; *argv; ++argv) {
326 if (isdigit(**argv))
327 break;
328 num_devices_specified++;
329 specified_devices = (char **)realloc(specified_devices,
330 sizeof(char *) *
331 num_devices_specified);
332 specified_devices[num_devices_specified - 1] = *argv;
333 }
334 dev_select = NULL;
335
336 if (nflag == 0 && maxshowdevs < num_devices_specified)
337 maxshowdevs = num_devices_specified;
338
339 /*
340 * People are generally only interested in disk statistics when
341 * they're running vmstat. So, that's what we're going to give
342 * them if they don't specify anything by default. We'll also give
343 * them any other random devices in the system so that we get to
344 * maxshowdevs devices, if that many devices exist. If the user
345 * specifies devices on the command line, either through a pattern
346 * match or by naming them explicitly, we will give the user only
347 * those devices.
348 */
349 if ((num_devices_specified == 0) && (num_matches == 0)) {
350 if (buildmatch("da", &matches, &num_matches) != 0)
351 errx(1, "%s", devstat_errbuf);
352
353 select_mode = DS_SELECT_ADD;
354 } else
355 select_mode = DS_SELECT_ONLY;
356
357 /*
358 * At this point, selectdevs will almost surely indicate that the
359 * device list has changed, so we don't look for return values of 0
360 * or 1. If we get back -1, though, there is an error.
361 */
362 if (selectdevs(&dev_select, &num_selected, &num_selections,
363 &select_generation, generation, cur.dinfo->devices,
364 num_devices, matches, num_matches, specified_devices,
365 num_devices_specified, select_mode,
366 maxshowdevs, 0) == -1)
367 errx(1, "%s", devstat_errbuf);
368
369 return(argv);
370 }
371
372 static long
373 getuptime(void)
374 {
375 static time_t now, boottime;
376 time_t uptime;
377
378 if (boottime == 0)
379 kread(X_BOOTTIME, &boottime, sizeof(boottime));
380 time(&now);
381 uptime = now - boottime;
382 if (uptime <= 0 || uptime > 60*60*24*365*10)
383 errx(1, "time makes no sense; namelist must be wrong");
384 return(uptime);
385 }
386
387 int hdrcnt;
388
389 static void
390 dovmstat(u_int interval, int reps)
391 {
392 struct vmtotal total;
393 struct devinfo *tmp_dinfo;
394 size_t vmm_size = sizeof(vmm);
395 size_t vms_size = sizeof(vms);
396 size_t vmt_size = sizeof(total);
397 int initial = 1;
398 int dooutput = 1;
399
400 signal(SIGCONT, needhdr);
401 if (reps != 0)
402 dooutput = 0;
403
404 for (hdrcnt = 1;;) {
405 if (!--hdrcnt)
406 printhdr();
407 if (kinfo_get_sched_cputime(&cp_time))
408 err(1, "kinfo_get_sched_cputime");
409
410 tmp_dinfo = last.dinfo;
411 last.dinfo = cur.dinfo;
412 cur.dinfo = tmp_dinfo;
413 last.busy_time = cur.busy_time;
414
415 /*
416 * Here what we want to do is refresh our device stats.
417 * getdevs() returns 1 when the device list has changed.
418 * If the device list has changed, we want to go through
419 * the selection process again, in case a device that we
420 * were previously displaying has gone away.
421 */
422 switch (getdevs(&cur)) {
423 case -1:
424 errx(1, "%s", devstat_errbuf);
425 break;
426 case 1: {
427 int retval;
428
429 num_devices = cur.dinfo->numdevs;
430 generation = cur.dinfo->generation;
431
432 retval = selectdevs(&dev_select, &num_selected,
433 &num_selections, &select_generation,
434 generation, cur.dinfo->devices,
435 num_devices, matches, num_matches,
436 specified_devices,
437 num_devices_specified, select_mode,
438 maxshowdevs, 0);
439 switch (retval) {
440 case -1:
441 errx(1, "%s", devstat_errbuf);
442 break;
443 case 1:
444 printhdr();
445 break;
446 default:
447 break;
448 }
449 }
450 default:
451 break;
452 }
453
454 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
455 perror("sysctlbyname: vm.vmstats");
456 exit(1);
457 }
458 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
459 perror("sysctlbyname: vm.vmmeter");
460 exit(1);
461 }
462 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) {
463 perror("sysctlbyname: vm.vmtotal");
464 exit(1);
465 }
466 if (dooutput) {
467 printf("%3ld %2ld %2ld",
468 total.t_rq - 1,
469 total.t_dw + total.t_pw,
470 total.t_sw);
471 }
472
473 #define rate(x) \
474 (intmax_t)(initial ? (x) : ((intmax_t)(x) * 1000 + interval / 2) \
475 / interval)
476
477 if (dooutput) {
478 printf(" %s ",
479 formatnum((int64_t)total.t_free *
480 vms.v_page_size, 4));
481 printf("%s ",
482 formatnum(rate(vmm.v_vm_faults -
483 ovmm.v_vm_faults), 5));
484 printf("%s ",
485 formatnum(rate(vmm.v_reactivated -
486 ovmm.v_reactivated), 4));
487 printf("%s ",
488 formatnum(rate(vmm.v_swapin + vmm.v_vnodein -
489 (ovmm.v_swapin + ovmm.v_vnodein)), 4));
490 printf("%s ",
491 formatnum(rate(vmm.v_swapout + vmm.v_vnodeout -
492 (ovmm.v_swapout + ovmm.v_vnodeout)), 4));
493 printf("%s ",
494 formatnum(rate(vmm.v_tfree -
495 ovmm.v_tfree), 4));
496 }
497 devstats(dooutput);
498 if (dooutput) {
499 printf("%s ",
500 formatnum(rate(vmm.v_intr -
501 ovmm.v_intr), 5));
502 printf("%s ",
503 formatnum(rate(vmm.v_syscall -
504 ovmm.v_syscall), 5));
505 printf("%s ",
506 formatnum(rate(vmm.v_swtch -
507 ovmm.v_swtch), 5));
508 cpustats();
509 printf("\n");
510 fflush(stdout);
511 }
512 if (reps >= 0 && --reps <= 0)
513 break;
514 ovmm = vmm;
515 usleep(interval * 1000);
516 initial = 0;
517 dooutput = 1;
518 }
519 }
520
521 static const char *
522 formatnum(intmax_t value, int width)
523 {
524 static char buf[16][64];
525 static int bi;
526 const char *fmt;
527 double d;
528
529 d = (double)value;
530 bi = (bi + 1) % 16;
531 fmt = "n/a";
532
533 switch(width) {
534 case 4:
535 if (value < 1024) {
536 fmt = "%4.0f";
537 } else if (value < 10*1024) {
538 fmt = "%3.1fK";
539 d = d / 1024;
540 } else if (value < 1000*1024) {
541 fmt = "%3.0fK";
542 d = d / 1024;
543 } else if (value < 10*1024*1024) {
544 fmt = "%3.1fM";
545 d = d / (1024 * 1024);
546 } else if (value < 1000*1024*1024) {
547 fmt = "%3.0fM";
548 d = d / (1024 * 1024);
549 } else {
550 fmt = "%3.1fG";
551 d = d / (1024.0 * 1024.0 * 1024.0);
552 }
553 break;
554 case 5:
555 if (value < 1024) {
556 fmt = "%5.0f";
557 } else if (value < 10*1024) {
558 fmt = "%4.2fK";
559 d = d / 1024;
560 } else if (value < 1000*1024) {
561 fmt = "%4.0fK";
562 d = d / 1024;
563 } else if (value < 10*1024*1024) {
564 fmt = "%4.2fM";
565 d = d / (1024 * 1024);
566 } else if (value < 1000*1024*1024) {
567 fmt = "%4.0fM";
568 d = d / (1024 * 1024);
569 } else if (value < 10LL*1024*1024*1024) {
570 fmt = "%4.2fG";
571 d = d / (1024.0 * 1024.0 * 1024.0);
572 } else if (value < 1000LL*1024*1024*1024) {
573 fmt = "%4.0fG";
574 d = d / (1024.0 * 1024.0 * 1024.0);
575 } else {
576 fmt = "%4.2fT";
577 d = d / (1024.0 * 1024.0 * 1024.0 * 1024.0);
578 }
579 break;
580 default:
581 fprintf(stderr, "formatnum: unsupported width %d\n", width);
582 exit(1);
583 break;
584 }
585 snprintf(buf[bi], sizeof(buf[bi]), fmt, d);
586 return buf[bi];
587 }
588
589 static void
590 printhdr(void)
591 {
592 int i, num_shown;
593
594 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
595 printf("--procs-- ---memory-- -------paging------ ");
596 if (num_shown > 1)
597 printf("--disks%.*s",
598 num_shown * 4 - 6,
599 "---------------------------------");
600 else if (num_shown == 1)
601 printf("disk");
602 printf(" -----faults------ ---cpu---\n");
603 printf(" r b w fre flt re pi po fr ");
604 for (i = 0; i < num_devices; i++)
605 if ((dev_select[i].selected)
606 && (dev_select[i].selected <= maxshowdevs))
607 printf(" %c%c%d ", dev_select[i].device_name[0],
608 dev_select[i].device_name[1],
609 dev_select[i].unit_number);
610 printf(" int sys ctx us sy id\n");
611 hdrcnt = winlines - 2;
612 }
613
614 /*
615 * Force a header to be prepended to the next output.
616 */
617 static void
618 needhdr(__unused int signo)
619 {
620
621 hdrcnt = 1;
622 }
623
624 static long
625 pct(long top, long bot)
626 {
627 long ans;
628
629 if (bot == 0)
630 return(0);
631 ans = (quad_t)top * 100 / bot;
632 return (ans);
633 }
634
635 #define PCT(top, bot) pct((long)(top), (long)(bot))
636
637 static void
638 dosum(void)
639 {
640 struct nchstats *nch_tmp, nchstats;
641 size_t vms_size = sizeof(vms);
642 size_t vmm_size = sizeof(vmm);
643 int cpucnt;
644 u_long nchtotal;
645 u_long nchpathtotal;
646 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU;
647
648 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
649 perror("sysctlbyname: vm.vmstats");
650 exit(1);
651 }
652 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
653 perror("sysctlbyname: vm.vmstats");
654 exit(1);
655 }
656 printf("%9u cpu context switches\n", vmm.v_swtch);
657 printf("%9u device interrupts\n", vmm.v_intr);
658 printf("%9u software interrupts\n", vmm.v_soft);
659 printf("%9u traps\n", vmm.v_trap);
660 printf("%9u system calls\n", vmm.v_syscall);
661 printf("%9u kernel threads created\n", vmm.v_kthreads);
662 printf("%9u fork() calls\n", vmm.v_forks);
663 printf("%9u vfork() calls\n", vmm.v_vforks);
664 printf("%9u rfork() calls\n", vmm.v_rforks);
665 printf("%9u exec() calls\n", vmm.v_exec);
666 printf("%9u swap pager pageins\n", vmm.v_swapin);
667 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin);
668 printf("%9u swap pager pageouts\n", vmm.v_swapout);
669 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout);
670 printf("%9u vnode pager pageins\n", vmm.v_vnodein);
671 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin);
672 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout);
673 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout);
674 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups);
675 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages);
676 printf("%9u pages reactivated\n", vmm.v_reactivated);
677 printf("%9u copy-on-write faults\n", vmm.v_cow_faults);
678 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim);
679 printf("%9u zero fill pages zeroed\n", vmm.v_zfod);
680 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod);
681 printf("%9u intransit blocking page faults\n", vmm.v_intrans);
682 printf("%9u total VM faults taken\n", vmm.v_vm_faults);
683 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages);
684 printf("%9u pages affected by fork()\n", vmm.v_forkpages);
685 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages);
686 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages);
687 printf("%9u pages freed\n", vmm.v_tfree);
688 printf("%9u pages freed by daemon\n", vmm.v_dfree);
689 printf("%9u pages freed by exiting processes\n", vmm.v_pfree);
690 printf("%9u pages active\n", vms.v_active_count);
691 printf("%9u pages inactive\n", vms.v_inactive_count);
692 printf("%9u pages in VM cache\n", vms.v_cache_count);
693 printf("%9u pages wired down\n", vms.v_wire_count);
694 printf("%9u pages free\n", vms.v_free_count);
695 printf("%9u bytes per page\n", vms.v_page_size);
696 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb);
697
698 if ((nch_tmp = malloc(nch_size)) == NULL) {
699 perror("malloc");
700 exit(1);
701 } else {
702 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) {
703 perror("sysctlbyname vfs.cache.nchstats");
704 free(nch_tmp);
705 exit(1);
706 } else {
707 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) {
708 perror("realloc");
709 exit(1);
710 }
711 }
712 }
713
714 cpucnt = nch_size / sizeof(struct nchstats);
715 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt);
716
717 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
718 nchstats.ncs_badhits + nchstats.ncs_falsehits +
719 nchstats.ncs_miss;
720 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss;
721 printf("%9ld total path lookups\n", nchpathtotal);
722 printf("%9ld total component lookups\n", nchtotal);
723 printf(
724 "%9s cache hits (%ld%% pos + %ld%% neg)\n",
725 "", PCT(nchstats.ncs_goodhits, nchtotal),
726 PCT(nchstats.ncs_neghits, nchtotal));
727 printf("%9s deletions %ld%%, falsehits %ld%%\n", "",
728 PCT(nchstats.ncs_badhits, nchtotal),
729 PCT(nchstats.ncs_falsehits, nchtotal));
730 free(nch_tmp);
731 }
732
733 #ifdef notyet
734 void
735 doforkst(void)
736 {
737 struct forkstat fks;
738
739 kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
740 printf("%d forks, %d pages, average %.2f\n",
741 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
742 printf("%d vforks, %d pages, average %.2f\n",
743 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork);
744 }
745 #endif
746
747 static void
748 devstats(int dooutput)
749 {
750 int dn;
751 long double transfers_per_second;
752 long double busy_seconds;
753
754 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
755 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
756 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
757 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
758 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
759 old_cp_time = cp_time;
760
761 busy_seconds = compute_etime(cur.busy_time, last.busy_time);
762
763 for (dn = 0; dn < num_devices; dn++) {
764 int di;
765
766 if ((dev_select[dn].selected == 0)
767 || (dev_select[dn].selected > maxshowdevs))
768 continue;
769
770 di = dev_select[dn].position;
771
772 if (compute_stats(&cur.dinfo->devices[di],
773 &last.dinfo->devices[di], busy_seconds,
774 NULL, NULL, NULL,
775 NULL, &transfers_per_second, NULL,
776 NULL, NULL) != 0)
777 errx(1, "%s", devstat_errbuf);
778
779 if (dooutput)
780 printf("%s ", formatnum(transfers_per_second, 4));
781 }
782 }
783
784 static void
785 cpustats(void)
786 {
787 uint64_t total;
788 double totusage;
789
790 total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
791 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle;
792
793 if (total)
794 totusage = 100.0 / total;
795 else
796 totusage = 0;
797 printf("%2.0f ",
798 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage);
799 printf("%2.0f ",
800 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage);
801 printf("%2.0f",
802 diff_cp_time.cp_idle * totusage);
803 }
804
805 static void
806 dointr(void)
807 {
808 u_long *intrcnt, uptime;
809 u_int64_t inttotal;
810 size_t nintr, inamlen, i, size;
811 int nwidth;
812 char *intrstr;
813 char **intrname;
814
815 uptime = getuptime();
816 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0)
817 errx(1, "sysctlbyname");
818 intrstr = malloc(inamlen);
819 if (intrstr == NULL)
820 err(1, "malloc");
821 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0);
822 for (nintr = 0, i = 0; i < inamlen; ++i) {
823 if (intrstr[i] == 0)
824 nintr++;
825 }
826 intrname = malloc(nintr * sizeof(char *));
827 for (i = 0; i < nintr; ++i) {
828 intrname[i] = intrstr;
829 intrstr += strlen(intrstr) + 1;
830 }
831
832 size = nintr * sizeof(*intrcnt);
833 intrcnt = calloc(nintr, sizeof(*intrcnt));
834 if (intrcnt == NULL)
835 err(1, "malloc");
836 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0);
837
838 nwidth = 21;
839 for (i = 0; i < nintr; ++i) {
840 if (nwidth < (int)strlen(intrname[i]))
841 nwidth = (int)strlen(intrname[i]);
842 }
843 if (verbose) nwidth += 12;
844
845 printf("%-*.*s %11s %10s\n",
846 nwidth, nwidth, "interrupt", "total", "rate");
847 inttotal = 0;
848 for (i = 0; i < nintr; ++i) {
849 int named;
850 char *infop, irqinfo[72];
851
852 if ((named = strncmp(intrname[i], "irq", 3)) != 0 ||
853 intrcnt[i] > 0) {
854 infop = intrname[i];
855 if (verbose) {
856 ssize_t irq, cpu;
857
858 irq = i % MAX_INTS;
859 cpu = i / MAX_INTS;
860 if (named) {
861 snprintf(irqinfo, sizeof(irqinfo),
862 "irq%-3zd %3zd: %s",
863 irq, cpu, intrname[i]);
864 } else {
865 snprintf(irqinfo, sizeof(irqinfo),
866 "irq%-3zd %3zd: ", irq, cpu);
867 }
868 infop = irqinfo;
869 }
870 printf("%-*.*s %11lu %10lu\n",
871 nwidth, nwidth, infop,
872 intrcnt[i], intrcnt[i] / uptime);
873 }
874 inttotal += intrcnt[i];
875 }
876 printf("%-*.*s %11llu %10llu\n",
877 nwidth, nwidth, "Total",
878 (long long)inttotal, (long long)(inttotal / uptime));
879 }
880
881 #define MAX_KMSTATS 1024
882
883 enum ksuse { KSINUSE, KSMEMUSE };
884
885 static long
886 cpuagg(struct malloc_type *ks, enum ksuse use)
887 {
888 int i;
889 long ttl;
890
891 ttl = 0;
892
893 switch(use) {
894 case KSINUSE:
895 for (i = 0; i < SMP_MAXCPU; ++i)
896 ttl += ks->ks_use[i].inuse;
897 break;
898 case KSMEMUSE:
899 for (i = 0; i < SMP_MAXCPU; ++i)
900 ttl += ks->ks_use[i].memuse;
901 break;
902 }
903 return(ttl);
904 }
905
906 static void
907 domem(void)
908 {
909 struct malloc_type *ks;
910 int i;
911 int nkms;
912 long totuse = 0, totreq = 0;
913 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp;
914 char buf[1024];
915
916 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp));
917 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) {
918 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp,
919 &kmemstats[nkms], sizeof(kmemstats[0])))
920 err(1, "kvm_read(%p)", (void *)kmsp);
921 if (sizeof(buf) != kvm_read(kd,
922 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf)))
923 err(1, "kvm_read(%p)",
924 kmemstats[nkms].ks_shortdesc);
925 buf[sizeof(buf) - 1] = '\0';
926 kmemstats[nkms].ks_shortdesc = strdup(buf);
927 kmsp = kmemstats[nkms].ks_next;
928 }
929 if (kmsp != NULL)
930 warnx("truncated to the first %d memory types", nkms);
931
932 printf(
933 "\nMemory statistics by type\n");
934 printf(" Type Count MemUse Limit Requests\n");
935 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) {
936 long ks_inuse;
937 long ks_memuse;
938
939 if (ks->ks_calls == 0)
940 continue;
941
942 ks_inuse = cpuagg(ks, KSINUSE);
943 ks_memuse = cpuagg(ks, KSMEMUSE);
944
945 printf("%19s %s %s %s %s\n",
946 ks->ks_shortdesc,
947 formatnum(ks_inuse, 5),
948 formatnum(ks_memuse, 5),
949 formatnum(ks->ks_limit, 5),
950 formatnum(ks->ks_calls, 5));
951
952 totuse += cpuagg(ks, KSMEMUSE);
953 totreq += ks->ks_calls;
954 }
955 printf("\nMemory Totals: In Use Requests\n");
956 printf(" %s %s\n",
957 formatnum(totuse, 5),
958 formatnum(totreq, 5));
959 }
960
961 #define MAXSAVE 16
962
963 static void
964 dozmem(u_int interval, int reps)
965 {
966 struct zlist zlist;
967 struct vm_zone *kz;
968 struct vm_zone zone;
969 struct vm_zone copy;
970 struct vm_zone save[MAXSAVE];
971 char name[64];
972 size_t namesz;
973 int i;
974 int first = 1;
975
976 bzero(save, sizeof(save));
977
978 again:
979 kread(X_ZLIST, &zlist, sizeof(zlist));
980 kz = LIST_FIRST(&zlist);
981 i = 0;
982
983 while (kz) {
984 if (kvm_read(kd, (intptr_t)kz, &zone, sizeof(zone)) !=
985 (ssize_t)sizeof(zone)) {
986 perror("kvm_read");
987 break;
988 }
989 copy = zone;
990 zone.znalloc -= save[i].znalloc;
991 save[i] = copy;
992 namesz = sizeof(name);
993 if (kvm_readstr(kd, (intptr_t)zone.zname, name, &namesz) == NULL) {
994 perror("kvm_read");
995 break;
996 }
997 if (first && interval) {
998 /* do nothing */
999 } else if (zone.zmax) {
1000 printf("%-10s %9ld/%9ld %5ldM used"
1001 " use=%-9lu %6.2f%%\n",
1002 name,
1003 (long)(zone.ztotal - zone.zfreecnt),
1004 (long)zone.zmax,
1005 (long)(zone.ztotal - zone.zfreecnt) *
1006 zone.zsize / (1024 * 1024),
1007 (unsigned long)zone.znalloc,
1008 (double)(zone.ztotal - zone.zfreecnt) *
1009 100.0 / (double)zone.zmax);
1010 } else {
1011 printf("%-10s %9ld %5ldM used"
1012 " use=%-9lu\n",
1013 name,
1014 (long)(zone.ztotal - zone.zfreecnt),
1015 (long)(zone.ztotal - zone.zfreecnt) *
1016 zone.zsize / (1024 * 1024),
1017 (unsigned long)zone.znalloc);
1018 }
1019 kz = LIST_NEXT(&zone, zlink);
1020 ++i;
1021 }
1022 if (reps) {
1023 first = 0;
1024 fflush(stdout);
1025 usleep(interval * 1000);
1026 --reps;
1027 printf("\n");
1028 goto again;
1029 }
1030 }
1031
1032 /*
1033 * kread reads something from the kernel, given its nlist index.
1034 */
1035 static void
1036 kread(int nlx, void *addr, size_t size)
1037 {
1038 const char *sym;
1039
1040 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1041 sym = namelist[nlx].n_name;
1042 if (*sym == '_')
1043 ++sym;
1044 errx(1, "symbol %s not defined", sym);
1045 }
1046 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) {
1047 sym = namelist[nlx].n_name;
1048 if (*sym == '_')
1049 ++sym;
1050 errx(1, "%s: %s", sym, kvm_geterr(kd));
1051 }
1052 }
1053
1054 static void
1055 usage(void)
1056 {
1057 fprintf(stderr, "%s%s",
1058 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n",
1059 " [-n devs] [disks]\n");
1060 exit(1);
1061 }
DragonFly BSD