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vmstat - Adjust headers
[dragonfly.git] / usr.bin / vmstat / vmstat.c
bloba936ce46494158c72de5567444f2e64ac3fc929f
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 LIST_HEAD(zlist, vm_zone);
94
95 struct statinfo cur, last;
96 int num_devices, maxshowdevs;
97 long generation;
98 struct device_selection *dev_select;
99 int num_selected;
100 struct devstat_match *matches;
101 int num_matches = 0;
102 int num_devices_specified, num_selections;
103 long select_generation;
104 char **specified_devices;
105 devstat_select_mode select_mode;
106
107 struct vmmeter vmm, ovmm;
108 struct vmstats vms, ovms;
109
110 int winlines = 20;
111 int nflag = 0;
112 int verbose = 0;
113
114 kvm_t *kd;
115
116 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
117
118 #define FORKSTAT 0x01
119 #define INTRSTAT 0x02
120 #define MEMSTAT 0x04
121 #define SUMSTAT 0x08
122 #define TIMESTAT 0x10
123 #define VMSTAT 0x20
124 #define ZMEMSTAT 0x40
125
126 static void cpustats(void);
127 static void dointr(void);
128 static void domem(void);
129 static void dosum(void);
130 static void dozmem(u_int interval, int reps);
131 static void dovmstat(u_int, int);
132 static void kread(int, void *, size_t);
133 static void usage(void);
134 static char **getdrivedata(char **);
135 static long getuptime(void);
136 static void needhdr(int);
137 static long pct(long, long);
138
139 #ifdef notyet
140 static void dotimes(void); /* Not implemented */
141 static void doforkst(void);
142 #endif
143 static void printhdr(void);
144 static const char *formatnum(intmax_t value, int width);
145 static void devstats(int dooutput);
146
147 int
148 main(int argc, char **argv)
149 {
150 int c, todo;
151 u_int interval; /* milliseconds */
152 int reps;
153 char *memf, *nlistf;
154 char errbuf[_POSIX2_LINE_MAX];
155
156 memf = nlistf = NULL;
157 interval = reps = todo = 0;
158 maxshowdevs = 2;
159 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) {
160 switch (c) {
161 case 'c':
162 reps = atoi(optarg);
163 break;
164 case 'f':
165 #ifdef notyet
166 todo |= FORKSTAT;
167 #else
168 errx(EX_USAGE, "sorry, -f is not (re)implemented yet");
169 #endif
170 break;
171 case 'i':
172 todo |= INTRSTAT;
173 break;
174 case 'M':
175 memf = optarg;
176 break;
177 case 'm':
178 todo |= MEMSTAT;
179 break;
180 case 'N':
181 nlistf = optarg;
182 break;
183 case 'n':
184 nflag = 1;
185 maxshowdevs = atoi(optarg);
186 if (maxshowdevs < 0)
187 errx(1, "number of devices %d is < 0",
188 maxshowdevs);
189 break;
190 case 'p':
191 if (buildmatch(optarg, &matches, &num_matches) != 0)
192 errx(1, "%s", devstat_errbuf);
193 break;
194 case 's':
195 todo |= SUMSTAT;
196 break;
197 case 't':
198 #ifdef notyet
199 todo |= TIMESTAT;
200 #else
201 errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
202 #endif
203 break;
204 case 'v':
205 ++verbose;
206 break;
207 case 'w':
208 interval = (u_int)(strtod(optarg, NULL) * 1000.0);
209 break;
210 case 'z':
211 todo |= ZMEMSTAT;
212 break;
213 default:
214 usage();
215 }
216 }
217 argc -= optind;
218 argv += optind;
219
220 if (todo == 0)
221 todo = VMSTAT;
222
223 /*
224 * Discard setgid privileges if not the running kernel so that bad
225 * guys can't print interesting stuff from kernel memory.
226 */
227 if (nlistf != NULL || memf != NULL)
228 setgid(getgid());
229
230 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
231 if (kd == NULL)
232 errx(1, "kvm_openfiles: %s", errbuf);
233
234 if ((c = kvm_nlist(kd, namelist)) != 0) {
235 if (c > 0) {
236 warnx("undefined symbols:");
237 for (c = 0; c < (int)__arysize(namelist); c++)
238 if (namelist[c].n_type == 0)
239 fprintf(stderr, " %s",
240 namelist[c].n_name);
241 fputc('\n', stderr);
242 } else
243 warnx("kvm_nlist: %s", kvm_geterr(kd));
244 exit(1);
245 }
246
247 if (todo & VMSTAT) {
248 struct winsize winsize;
249
250 /*
251 * Make sure that the userland devstat version matches the
252 * kernel devstat version. If not, exit and print a
253 * message informing the user of his mistake.
254 */
255 if (checkversion() < 0)
256 errx(1, "%s", devstat_errbuf);
257
258
259 argv = getdrivedata(argv);
260 winsize.ws_row = 0;
261 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize);
262 if (winsize.ws_row > 0)
263 winlines = winsize.ws_row;
264
265 }
266
267 #define BACKWARD_COMPATIBILITY
268 #ifdef BACKWARD_COMPATIBILITY
269 if (*argv) {
270 interval = (u_int)(strtod(*argv, NULL) * 1000.0);
271 if (*++argv)
272 reps = atoi(*argv);
273 }
274 #endif
275
276 if (interval) {
277 if (!reps)
278 reps = -1;
279 } else if (reps) {
280 interval = 1000;
281 }
282
283 #ifdef notyet
284 if (todo & FORKSTAT)
285 doforkst();
286 #endif
287 if (todo & MEMSTAT)
288 domem();
289 if (todo & ZMEMSTAT)
290 dozmem(interval, reps);
291 if (todo & SUMSTAT)
292 dosum();
293 #ifdef notyet
294 if (todo & TIMESTAT)
295 dotimes();
296 #endif
297 if (todo & INTRSTAT)
298 dointr();
299 if (todo & VMSTAT)
300 dovmstat(interval, reps);
301 exit(0);
302 }
303
304 static char **
305 getdrivedata(char **argv)
306 {
307 if ((num_devices = getnumdevs()) < 0)
308 errx(1, "%s", devstat_errbuf);
309
310 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
311 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
312 bzero(cur.dinfo, sizeof(struct devinfo));
313 bzero(last.dinfo, sizeof(struct devinfo));
314
315 if (getdevs(&cur) == -1)
316 errx(1, "%s", devstat_errbuf);
317
318 num_devices = cur.dinfo->numdevs;
319 generation = cur.dinfo->generation;
320
321 specified_devices = (char **)malloc(sizeof(char *));
322 for (num_devices_specified = 0; *argv; ++argv) {
323 if (isdigit(**argv))
324 break;
325 num_devices_specified++;
326 specified_devices = (char **)realloc(specified_devices,
327 sizeof(char *) *
328 num_devices_specified);
329 specified_devices[num_devices_specified - 1] = *argv;
330 }
331 dev_select = NULL;
332
333 if (nflag == 0 && maxshowdevs < num_devices_specified)
334 maxshowdevs = num_devices_specified;
335
336 /*
337 * People are generally only interested in disk statistics when
338 * they're running vmstat. So, that's what we're going to give
339 * them if they don't specify anything by default. We'll also give
340 * them any other random devices in the system so that we get to
341 * maxshowdevs devices, if that many devices exist. If the user
342 * specifies devices on the command line, either through a pattern
343 * match or by naming them explicitly, we will give the user only
344 * those devices.
345 */
346 if ((num_devices_specified == 0) && (num_matches == 0)) {
347 if (buildmatch("da", &matches, &num_matches) != 0)
348 errx(1, "%s", devstat_errbuf);
349
350 select_mode = DS_SELECT_ADD;
351 } else
352 select_mode = DS_SELECT_ONLY;
353
354 /*
355 * At this point, selectdevs will almost surely indicate that the
356 * device list has changed, so we don't look for return values of 0
357 * or 1. If we get back -1, though, there is an error.
358 */
359 if (selectdevs(&dev_select, &num_selected, &num_selections,
360 &select_generation, generation, cur.dinfo->devices,
361 num_devices, matches, num_matches, specified_devices,
362 num_devices_specified, select_mode,
363 maxshowdevs, 0) == -1)
364 errx(1, "%s", devstat_errbuf);
365
366 return(argv);
367 }
368
369 static long
370 getuptime(void)
371 {
372 static time_t now, boottime;
373 time_t uptime;
374
375 if (boottime == 0)
376 kread(X_BOOTTIME, &boottime, sizeof(boottime));
377 time(&now);
378 uptime = now - boottime;
379 if (uptime <= 0 || uptime > 60*60*24*365*10)
380 errx(1, "time makes no sense; namelist must be wrong");
381 return(uptime);
382 }
383
384 int hdrcnt;
385
386 static void
387 dovmstat(u_int interval, int reps)
388 {
389 struct vmtotal total;
390 struct devinfo *tmp_dinfo;
391 size_t vmm_size = sizeof(vmm);
392 size_t vms_size = sizeof(vms);
393 size_t vmt_size = sizeof(total);
394 int initial = 1;
395 int dooutput = 1;
396
397 signal(SIGCONT, needhdr);
398 if (reps != 0)
399 dooutput = 0;
400
401 for (hdrcnt = 1;;) {
402 if (!--hdrcnt)
403 printhdr();
404 if (kinfo_get_sched_cputime(&cp_time))
405 err(1, "kinfo_get_sched_cputime");
406
407 tmp_dinfo = last.dinfo;
408 last.dinfo = cur.dinfo;
409 cur.dinfo = tmp_dinfo;
410 last.busy_time = cur.busy_time;
411
412 /*
413 * Here what we want to do is refresh our device stats.
414 * getdevs() returns 1 when the device list has changed.
415 * If the device list has changed, we want to go through
416 * the selection process again, in case a device that we
417 * were previously displaying has gone away.
418 */
419 switch (getdevs(&cur)) {
420 case -1:
421 errx(1, "%s", devstat_errbuf);
422 break;
423 case 1: {
424 int retval;
425
426 num_devices = cur.dinfo->numdevs;
427 generation = cur.dinfo->generation;
428
429 retval = selectdevs(&dev_select, &num_selected,
430 &num_selections, &select_generation,
431 generation, cur.dinfo->devices,
432 num_devices, matches, num_matches,
433 specified_devices,
434 num_devices_specified, select_mode,
435 maxshowdevs, 0);
436 switch (retval) {
437 case -1:
438 errx(1, "%s", devstat_errbuf);
439 break;
440 case 1:
441 printhdr();
442 break;
443 default:
444 break;
445 }
446 }
447 default:
448 break;
449 }
450
451 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
452 perror("sysctlbyname: vm.vmstats");
453 exit(1);
454 }
455 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
456 perror("sysctlbyname: vm.vmmeter");
457 exit(1);
458 }
459 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) {
460 perror("sysctlbyname: vm.vmtotal");
461 exit(1);
462 }
463 if (dooutput) {
464 printf("%3ld %2ld %2ld",
465 total.t_rq - 1,
466 total.t_dw + total.t_pw,
467 total.t_sw);
468 }
469
470 #define rate(x) \
471 (intmax_t)(initial ? (x) : ((intmax_t)(x) * 1000 + interval / 2) \
472 / interval)
473
474 if (dooutput) {
475 printf(" %s ",
476 formatnum((int64_t)total.t_free *
477 vms.v_page_size, 4));
478 printf("%s ",
479 formatnum(rate(vmm.v_vm_faults -
480 ovmm.v_vm_faults), 5));
481 printf("%s ",
482 formatnum(rate(vmm.v_reactivated -
483 ovmm.v_reactivated), 4));
484 printf("%s ",
485 formatnum(rate(vmm.v_swapin + vmm.v_vnodein -
486 (ovmm.v_swapin + ovmm.v_vnodein)), 4));
487 printf("%s ",
488 formatnum(rate(vmm.v_swapout + vmm.v_vnodeout -
489 (ovmm.v_swapout + ovmm.v_vnodeout)), 4));
490 printf("%s ",
491 formatnum(rate(vmm.v_tfree -
492 ovmm.v_tfree), 4));
493 }
494 devstats(dooutput);
495 if (dooutput) {
496 printf("%s ",
497 formatnum(rate(vmm.v_intr -
498 ovmm.v_intr), 5));
499 printf("%s ",
500 formatnum(rate(vmm.v_syscall -
501 ovmm.v_syscall), 5));
502 printf("%s ",
503 formatnum(rate(vmm.v_swtch -
504 ovmm.v_swtch), 5));
505 cpustats();
506 printf("\n");
507 fflush(stdout);
508 }
509 if (reps >= 0 && --reps <= 0)
510 break;
511 ovmm = vmm;
512 usleep(interval * 1000);
513 initial = 0;
514 dooutput = 1;
515 }
516 }
517
518 static const char *
519 formatnum(intmax_t value, int width)
520 {
521 static char buf[64];
522 const char *fmt;
523 double d;
524
525 d = (double)value;
526 fmt = "n/a";
527
528 switch(width) {
529 case 4:
530 if (value < 1024) {
531 fmt = "%4.0f";
532 } else if (value < 10*1024) {
533 fmt = "%3.1fK";
534 d = d / 1024;
535 } else if (value < 1000*1024) {
536 fmt = "%3.0fK";
537 d = d / 1024;
538 } else if (value < 10*1024*1024) {
539 fmt = "%3.1fM";
540 d = d / (1024 * 1024);
541 } else if (value < 1000*1024*1024) {
542 fmt = "%3.0fM";
543 d = d / (1024 * 1024);
544 } else {
545 fmt = "%3.1fG";
546 d = d / (1024.0 * 1024.0 * 1024.0);
547 }
548 break;
549 case 5:
550 if (value < 1024) {
551 fmt = "%5.0f";
552 } else if (value < 10*1024) {
553 fmt = "%4.2fK";
554 d = d / 1024;
555 } else if (value < 1000*1024) {
556 fmt = "%4.0fK";
557 d = d / 1024;
558 } else if (value < 10*1024*1024) {
559 fmt = "%4.2fM";
560 d = d / (1024 * 1024);
561 } else if (value < 1000*1024*1024) {
562 fmt = "%4.0fM";
563 d = d / (1024 * 1024);
564 } else {
565 fmt = "%4.2fG";
566 d = d / (1024.0 * 1024.0 * 1024.0);
567 }
568 break;
569 default:
570 fprintf(stderr, "formatnum: unsupported width %d\n", width);
571 exit(1);
572 break;
573 }
574 snprintf(buf, sizeof(buf), fmt, d);
575 return buf;
576 }
577
578 static void
579 printhdr(void)
580 {
581 int i, num_shown;
582
583 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
584 printf("--procs-- ---memory-- -------paging------ ");
585 if (num_shown > 1)
586 printf("--disks%.*s",
587 num_shown * 4 - 6,
588 "---------------------------------");
589 else if (num_shown == 1)
590 printf("disk");
591 printf(" -----faults------ ---cpu---\n");
592 printf(" r b w fre flt re pi po fr ");
593 for (i = 0; i < num_devices; i++)
594 if ((dev_select[i].selected)
595 && (dev_select[i].selected <= maxshowdevs))
596 printf(" %c%c%d ", dev_select[i].device_name[0],
597 dev_select[i].device_name[1],
598 dev_select[i].unit_number);
599 printf(" int sys ctx us sy id\n");
600 hdrcnt = winlines - 2;
601 }
602
603 /*
604 * Force a header to be prepended to the next output.
605 */
606 static void
607 needhdr(__unused int signo)
608 {
609
610 hdrcnt = 1;
611 }
612
613 static long
614 pct(long top, long bot)
615 {
616 long ans;
617
618 if (bot == 0)
619 return(0);
620 ans = (quad_t)top * 100 / bot;
621 return (ans);
622 }
623
624 #define PCT(top, bot) pct((long)(top), (long)(bot))
625
626 static void
627 dosum(void)
628 {
629 struct nchstats *nch_tmp, nchstats;
630 size_t vms_size = sizeof(vms);
631 size_t vmm_size = sizeof(vmm);
632 int cpucnt;
633 u_long nchtotal;
634 u_long nchpathtotal;
635 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU;
636
637 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) {
638 perror("sysctlbyname: vm.vmstats");
639 exit(1);
640 }
641 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) {
642 perror("sysctlbyname: vm.vmstats");
643 exit(1);
644 }
645 printf("%9u cpu context switches\n", vmm.v_swtch);
646 printf("%9u device interrupts\n", vmm.v_intr);
647 printf("%9u software interrupts\n", vmm.v_soft);
648 printf("%9u traps\n", vmm.v_trap);
649 printf("%9u system calls\n", vmm.v_syscall);
650 printf("%9u kernel threads created\n", vmm.v_kthreads);
651 printf("%9u fork() calls\n", vmm.v_forks);
652 printf("%9u vfork() calls\n", vmm.v_vforks);
653 printf("%9u rfork() calls\n", vmm.v_rforks);
654 printf("%9u exec() calls\n", vmm.v_exec);
655 printf("%9u swap pager pageins\n", vmm.v_swapin);
656 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin);
657 printf("%9u swap pager pageouts\n", vmm.v_swapout);
658 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout);
659 printf("%9u vnode pager pageins\n", vmm.v_vnodein);
660 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin);
661 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout);
662 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout);
663 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups);
664 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages);
665 printf("%9u pages reactivated\n", vmm.v_reactivated);
666 printf("%9u copy-on-write faults\n", vmm.v_cow_faults);
667 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim);
668 printf("%9u zero fill pages zeroed\n", vmm.v_zfod);
669 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod);
670 printf("%9u intransit blocking page faults\n", vmm.v_intrans);
671 printf("%9u total VM faults taken\n", vmm.v_vm_faults);
672 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages);
673 printf("%9u pages affected by fork()\n", vmm.v_forkpages);
674 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages);
675 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages);
676 printf("%9u pages freed\n", vmm.v_tfree);
677 printf("%9u pages freed by daemon\n", vmm.v_dfree);
678 printf("%9u pages freed by exiting processes\n", vmm.v_pfree);
679 printf("%9u pages active\n", vms.v_active_count);
680 printf("%9u pages inactive\n", vms.v_inactive_count);
681 printf("%9u pages in VM cache\n", vms.v_cache_count);
682 printf("%9u pages wired down\n", vms.v_wire_count);
683 printf("%9u pages free\n", vms.v_free_count);
684 printf("%9u bytes per page\n", vms.v_page_size);
685 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb);
686
687 if ((nch_tmp = malloc(nch_size)) == NULL) {
688 perror("malloc");
689 exit(1);
690 } else {
691 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) {
692 perror("sysctlbyname vfs.cache.nchstats");
693 free(nch_tmp);
694 exit(1);
695 } else {
696 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) {
697 perror("realloc");
698 exit(1);
699 }
700 }
701 }
702
703 cpucnt = nch_size / sizeof(struct nchstats);
704 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt);
705
706 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
707 nchstats.ncs_badhits + nchstats.ncs_falsehits +
708 nchstats.ncs_miss;
709 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss;
710 printf("%9ld total path lookups\n", nchpathtotal);
711 printf("%9ld total component lookups\n", nchtotal);
712 printf(
713 "%9s cache hits (%ld%% pos + %ld%% neg)\n",
714 "", PCT(nchstats.ncs_goodhits, nchtotal),
715 PCT(nchstats.ncs_neghits, nchtotal));
716 printf("%9s deletions %ld%%, falsehits %ld%%\n", "",
717 PCT(nchstats.ncs_badhits, nchtotal),
718 PCT(nchstats.ncs_falsehits, nchtotal));
719 free(nch_tmp);
720 }
721
722 #ifdef notyet
723 void
724 doforkst(void)
725 {
726 struct forkstat fks;
727
728 kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
729 printf("%d forks, %d pages, average %.2f\n",
730 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
731 printf("%d vforks, %d pages, average %.2f\n",
732 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork);
733 }
734 #endif
735
736 static void
737 devstats(int dooutput)
738 {
739 int dn;
740 long double transfers_per_second;
741 long double busy_seconds;
742
743 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
744 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
745 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
746 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
747 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
748 old_cp_time = cp_time;
749
750 busy_seconds = compute_etime(cur.busy_time, last.busy_time);
751
752 for (dn = 0; dn < num_devices; dn++) {
753 int di;
754
755 if ((dev_select[dn].selected == 0)
756 || (dev_select[dn].selected > maxshowdevs))
757 continue;
758
759 di = dev_select[dn].position;
760
761 if (compute_stats(&cur.dinfo->devices[di],
762 &last.dinfo->devices[di], busy_seconds,
763 NULL, NULL, NULL,
764 NULL, &transfers_per_second, NULL,
765 NULL, NULL) != 0)
766 errx(1, "%s", devstat_errbuf);
767
768 if (dooutput)
769 printf("%s ", formatnum(transfers_per_second, 4));
770 }
771 }
772
773 static void
774 cpustats(void)
775 {
776 uint64_t total;
777 double totusage;
778
779 total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
780 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle;
781
782 if (total)
783 totusage = 100.0 / total;
784 else
785 totusage = 0;
786 printf("%2.0f ",
787 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage);
788 printf("%2.0f ",
789 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage);
790 printf("%2.0f",
791 diff_cp_time.cp_idle * totusage);
792 }
793
794 static void
795 dointr(void)
796 {
797 u_long *intrcnt, uptime;
798 u_int64_t inttotal;
799 size_t nintr, inamlen, i, size;
800 int nwidth;
801 char *intrstr;
802 char **intrname;
803
804 uptime = getuptime();
805 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0)
806 errx(1, "sysctlbyname");
807 intrstr = malloc(inamlen);
808 if (intrstr == NULL)
809 err(1, "malloc");
810 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0);
811 for (nintr = 0, i = 0; i < inamlen; ++i) {
812 if (intrstr[i] == 0)
813 nintr++;
814 }
815 intrname = malloc(nintr * sizeof(char *));
816 for (i = 0; i < nintr; ++i) {
817 intrname[i] = intrstr;
818 intrstr += strlen(intrstr) + 1;
819 }
820
821 size = nintr * sizeof(*intrcnt);
822 intrcnt = calloc(nintr, sizeof(*intrcnt));
823 if (intrcnt == NULL)
824 err(1, "malloc");
825 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0);
826
827 nwidth = 21;
828 for (i = 0; i < nintr; ++i) {
829 if (nwidth < (int)strlen(intrname[i]))
830 nwidth = (int)strlen(intrname[i]);
831 }
832 if (verbose) nwidth += 12;
833
834 printf("%-*.*s %11s %10s\n",
835 nwidth, nwidth, "interrupt", "total", "rate");
836 inttotal = 0;
837 for (i = 0; i < nintr; ++i) {
838 int named;
839 char *infop, irqinfo[72];
840
841 if ((named = strncmp(intrname[i], "irq", 3)) != 0 ||
842 intrcnt[i] > 0) {
843 infop = intrname[i];
844 if (verbose) {
845 ssize_t irq, cpu;
846
847 irq = i % MAX_INTS;
848 cpu = i / MAX_INTS;
849 if (named) {
850 snprintf(irqinfo, sizeof(irqinfo),
851 "irq%-3zd %3zd: %s",
852 irq, cpu, intrname[i]);
853 } else {
854 snprintf(irqinfo, sizeof(irqinfo),
855 "irq%-3zd %3zd: ", irq, cpu);
856 }
857 infop = irqinfo;
858 }
859 printf("%-*.*s %11lu %10lu\n",
860 nwidth, nwidth, infop,
861 intrcnt[i], intrcnt[i] / uptime);
862 }
863 inttotal += intrcnt[i];
864 }
865 printf("%-*.*s %11llu %10llu\n",
866 nwidth, nwidth, "Total",
867 (long long)inttotal, (long long)(inttotal / uptime));
868 }
869
870 #define MAX_KMSTATS 1024
871
872 enum ksuse { KSINUSE, KSMEMUSE };
873
874 static long
875 cpuagg(struct malloc_type *ks, enum ksuse use)
876 {
877 int i;
878 long ttl;
879
880 ttl = 0;
881
882 switch(use) {
883 case KSINUSE:
884 for (i = 0; i < SMP_MAXCPU; ++i)
885 ttl += ks->ks_use[i].inuse;
886 break;
887 case KSMEMUSE:
888 for (i = 0; i < SMP_MAXCPU; ++i)
889 ttl += ks->ks_use[i].memuse;
890 break;
891 }
892 return(ttl);
893 }
894
895 static void
896 domem(void)
897 {
898 struct malloc_type *ks;
899 int i, j;
900 int first, nkms;
901 long totuse = 0, totfree = 0, totreq = 0;
902 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp;
903 char buf[1024];
904
905 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp));
906 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) {
907 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp,
908 &kmemstats[nkms], sizeof(kmemstats[0])))
909 err(1, "kvm_read(%p)", (void *)kmsp);
910 if (sizeof(buf) != kvm_read(kd,
911 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf)))
912 err(1, "kvm_read(%p)",
913 kmemstats[nkms].ks_shortdesc);
914 buf[sizeof(buf) - 1] = '\0';
915 kmemstats[nkms].ks_shortdesc = strdup(buf);
916 kmsp = kmemstats[nkms].ks_next;
917 }
918 if (kmsp != NULL)
919 warnx("truncated to the first %d memory types", nkms);
920
921 printf(
922 "\nMemory statistics by type Type Kern\n");
923 printf(
924 " Type InUse MemUse HighUse Limit Requests Limit Limit\n");
925 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) {
926 if (ks->ks_calls == 0)
927 continue;
928 printf("%19s%7ld%7ldK%7ldK%11zuK%10jd%5u%6u",
929 ks->ks_shortdesc,
930 cpuagg(ks, KSINUSE), (cpuagg(ks, KSMEMUSE) + 1023) / 1024,
931 (ks->ks_maxused + 1023) / 1024,
932 (ks->ks_limit + 1023) / 1024, (intmax_t)ks->ks_calls,
933 ks->ks_limblocks, ks->ks_mapblocks);
934 first = 1;
935 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
936 if ((ks->ks_size & j) == 0)
937 continue;
938 if (first)
939 printf(" ");
940 else
941 printf(",");
942 if(j<1024)
943 printf("%d",j);
944 else
945 printf("%dK",j>>10);
946 first = 0;
947 }
948 printf("\n");
949 totuse += cpuagg(ks, KSMEMUSE);
950 totreq += ks->ks_calls;
951 }
952 printf("\nMemory Totals: In Use Free Requests\n");
953 printf(" %7ldK %6ldK %8ld\n",
954 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
955 }
956
957 #define MAXSAVE 16
958
959 static void
960 dozmem(u_int interval, int reps)
961 {
962 struct zlist zlist;
963 struct vm_zone *kz;
964 struct vm_zone zone;
965 struct vm_zone copy;
966 struct vm_zone save[MAXSAVE];
967 char name[64];
968 size_t namesz;
969 int i;
970 int first = 1;
971
972 bzero(save, sizeof(save));
973
974 again:
975 kread(X_ZLIST, &zlist, sizeof(zlist));
976 kz = LIST_FIRST(&zlist);
977 i = 0;
978
979 while (kz) {
980 if (kvm_read(kd, (intptr_t)kz, &zone, sizeof(zone)) !=
981 (ssize_t)sizeof(zone)) {
982 perror("kvm_read");
983 break;
984 }
985 copy = zone;
986 zone.znalloc -= save[i].znalloc;
987 save[i] = copy;
988 namesz = sizeof(name);
989 if (kvm_readstr(kd, (intptr_t)zone.zname, name, &namesz) == NULL) {
990 perror("kvm_read");
991 break;
992 }
993 if (first && interval) {
994 /* do nothing */
995 } else if (zone.zmax) {
996 printf("%-10s %9ld/%9ld %5ldM used"
997 " use=%-9lu %6.2f%%\n",
998 name,
999 (long)(zone.ztotal - zone.zfreecnt),
1000 (long)zone.zmax,
1001 (long)(zone.ztotal - zone.zfreecnt) *
1002 zone.zsize / (1024 * 1024),
1003 (unsigned long)zone.znalloc,
1004 (double)(zone.ztotal - zone.zfreecnt) *
1005 100.0 / (double)zone.zmax);
1006 } else {
1007 printf("%-10s %9ld %5ldM used"
1008 " use=%-9lu\n",
1009 name,
1010 (long)(zone.ztotal - zone.zfreecnt),
1011 (long)(zone.ztotal - zone.zfreecnt) *
1012 zone.zsize / (1024 * 1024),
1013 (unsigned long)zone.znalloc);
1014 }
1015 kz = LIST_NEXT(&zone, zlink);
1016 ++i;
1017 }
1018 if (reps) {
1019 first = 0;
1020 fflush(stdout);
1021 usleep(interval * 1000);
1022 --reps;
1023 printf("\n");
1024 goto again;
1025 }
1026 }
1027
1028 /*
1029 * kread reads something from the kernel, given its nlist index.
1030 */
1031 static void
1032 kread(int nlx, void *addr, size_t size)
1033 {
1034 const char *sym;
1035
1036 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1037 sym = namelist[nlx].n_name;
1038 if (*sym == '_')
1039 ++sym;
1040 errx(1, "symbol %s not defined", sym);
1041 }
1042 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) {
1043 sym = namelist[nlx].n_name;
1044 if (*sym == '_')
1045 ++sym;
1046 errx(1, "%s: %s", sym, kvm_geterr(kd));
1047 }
1048 }
1049
1050 static void
1051 usage(void)
1052 {
1053 fprintf(stderr, "%s%s",
1054 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n",
1055 " [-n devs] [disks]\n");
1056 exit(1);
1057 }
DragonFly BSD