2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1986, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 static const char copyright[] =
34 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
40 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
50 #include <sys/namei.h>
51 #include <sys/malloc.h>
52 #include <sys/signal.h>
53 #include <sys/fcntl.h>
54 #include <sys/ioctl.h>
55 #include <sys/resource.h>
56 #include <sys/sysctl.h>
60 #include <sys/vmmeter.h>
63 #include <vm/vm_param.h>
84 #define VMSTAT_XO_VERSION "1"
86 static char da[] = "da";
88 enum x_stats { X_SUM, X_HZ, X_STATHZ, X_NCHSTATS, X_INTRNAMES, X_SINTRNAMES,
89 X_INTRCNT, X_SINTRCNT, X_DEFICIT, X_REC, X_PGIN, X_XSTATS };
91 static struct nlist namelist[] = {
92 [X_SUM] = { .n_name = "_vm_cnt", },
93 [X_HZ] = { .n_name = "_hz", },
94 [X_STATHZ] = { .n_name = "_stathz", },
95 [X_NCHSTATS] = { .n_name = "_nchstats", },
96 [X_INTRNAMES] = { .n_name = "_intrnames", },
97 [X_SINTRNAMES] = { .n_name = "_sintrnames", },
98 [X_INTRCNT] = { .n_name = "_intrcnt", },
99 [X_SINTRCNT] = { .n_name = "_sintrcnt", },
101 [X_DEFICIT] = { .n_name = "_deficit", },
102 [X_REC] = { .n_name = "_rectime", },
103 [X_PGIN] = { .n_name = "_pgintime", },
104 [X_XSTATS] = { .n_name = "_xstats", },
109 static struct devstat_match *matches;
110 static struct device_selection *dev_select;
111 static struct statinfo cur, last;
112 static devstat_select_mode select_mode;
113 static size_t size_cp_times;
114 static long *cur_cp_times, *last_cp_times;
115 static long generation, select_generation;
116 static int hz, hdrcnt, maxshowdevs;
117 static int num_devices, num_devices_specified;
118 static int num_matches, num_selected, num_selections;
119 static char **specified_devices;
121 static struct __vmmeter {
127 uint64_t v_vm_faults;
128 uint64_t v_io_faults;
129 uint64_t v_cow_faults;
130 uint64_t v_cow_optim;
135 uint64_t v_swappgsin;
136 uint64_t v_swappgsout;
139 uint64_t v_vnodepgsin;
140 uint64_t v_vnodepgsout;
142 uint64_t v_reactivated;
143 uint64_t v_pdwakeups;
145 uint64_t v_pdshortfalls;
153 uint64_t v_forkpages;
154 uint64_t v_vforkpages;
155 uint64_t v_rforkpages;
156 uint64_t v_kthreadpages;
159 u_int v_free_reserved;
164 u_int v_active_count;
165 u_int v_inactive_target;
166 u_int v_inactive_count;
167 u_int v_laundry_count;
168 u_int v_pageout_free_min;
169 u_int v_interrupt_free_min;
173 #define VMSTAT_DEFAULT_LINES 20 /* Default number of `winlines'. */
174 static volatile sig_atomic_t wresized; /* Tty resized when non-zero. */
175 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
184 #define FORKSTAT 0x01
185 #define INTRSTAT 0x02
188 #define TIMESTAT 0x10
190 #define ZMEMSTAT 0x40
193 static void cpustats(void);
194 static void pcpustats(u_long, int);
195 static void devstats(void);
196 static void doforkst(void);
197 static void dointr(unsigned int, int);
198 static void doobjstat(void);
199 static void dosum(void);
200 static void dovmstat(unsigned int, int);
201 static void domemstat_malloc(void);
202 static void domemstat_zone(void);
203 static void kread(int, void *, size_t);
204 static void kreado(int, void *, size_t, size_t);
205 static void needhdr(int);
206 static void needresize(int);
207 static void doresize(void);
208 static void printhdr(int, u_long);
209 static void usage(void);
211 static long pct(long, long);
212 static long long getuptime(void);
214 static char **getdrivedata(char **);
217 main(int argc, char *argv[])
219 char *bp, *buf, *memf, *nlistf;
221 int bufsize, c, len, reps, todo;
222 unsigned int interval;
223 char errbuf[_POSIX2_LINE_MAX];
225 memf = nlistf = NULL;
226 interval = reps = todo = 0;
230 argc = xo_parse_args(argc, argv);
234 while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:stw:z")) != -1) {
268 maxshowdevs = atoi(optarg);
270 xo_errx(1, "number of devices %d is < 0",
277 if (devstat_buildmatch(optarg, &matches, &num_matches)
279 xo_errx(1, "%s", devstat_errbuf);
289 "sorry, -t is not (re)implemented yet");
293 /* Convert to milliseconds. */
308 xo_set_version(VMSTAT_XO_VERSION);
313 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
315 xo_errx(1, "kvm_openfiles: %s", errbuf);
319 if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
321 bufsize = 0, len = 0;
324 * 'cnt' was renamed to 'vm_cnt'. If 'vm_cnt' is not
325 * found try looking up older 'cnt' symbol.
327 if (namelist[X_SUM].n_type == 0 &&
328 strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
329 namelist[X_SUM].n_name = "_cnt";
333 for (c = 0; c < (int)(nitems(namelist)); c++)
334 if (namelist[c].n_type == 0)
335 bufsize += strlen(namelist[c].n_name)
338 buf = bp = alloca(bufsize);
340 for (c = 0; c < (int)(nitems(namelist)); c++)
341 if (namelist[c].n_type == 0) {
344 len = strlen(namelist[c].n_name);
346 memcpy(bp, namelist[c].n_name, len);
350 xo_error("undefined symbols:\n", buf);
352 xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
357 xo_errx(1, "Cannot use -P with crash dumps");
361 * Make sure that the userland devstat version matches the
362 * kernel devstat version. If not, exit and print a
363 * message informing the user of his mistake.
365 if (devstat_checkversion(NULL) < 0)
366 xo_errx(1, "%s", devstat_errbuf);
369 argv = getdrivedata(argv);
400 dointr(interval, reps);
402 dovmstat(interval, reps);
408 mysysctl(const char *name, void *oldp, size_t *oldlenp)
412 error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
413 if (error != 0 && errno != ENOMEM)
414 xo_err(1, "sysctl(%s)", name);
419 getdrivedata(char **argv)
422 if ((num_devices = devstat_getnumdevs(NULL)) < 0)
423 xo_errx(1, "%s", devstat_errbuf);
425 cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
426 last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
428 if (devstat_getdevs(NULL, &cur) == -1)
429 xo_errx(1, "%s", devstat_errbuf);
431 num_devices = cur.dinfo->numdevs;
432 generation = cur.dinfo->generation;
434 specified_devices = malloc(sizeof(char *));
435 for (num_devices_specified = 0; *argv; ++argv) {
438 num_devices_specified++;
439 specified_devices = realloc(specified_devices,
440 sizeof(char *) * num_devices_specified);
441 specified_devices[num_devices_specified - 1] = *argv;
445 if (nflag == 0 && maxshowdevs < num_devices_specified)
446 maxshowdevs = num_devices_specified;
449 * People are generally only interested in disk statistics when
450 * they're running vmstat. So, that's what we're going to give
451 * them if they don't specify anything by default. We'll also give
452 * them any other random devices in the system so that we get to
453 * maxshowdevs devices, if that many devices exist. If the user
454 * specifies devices on the command line, either through a pattern
455 * match or by naming them explicitly, we will give the user only
458 if ((num_devices_specified == 0) && (num_matches == 0)) {
459 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
460 xo_errx(1, "%s", devstat_errbuf);
461 select_mode = DS_SELECT_ADD;
463 select_mode = DS_SELECT_ONLY;
466 * At this point, selectdevs will almost surely indicate that the
467 * device list has changed, so we don't look for return values of 0
468 * or 1. If we get back -1, though, there is an error.
470 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
471 &select_generation, generation, cur.dinfo->devices,
472 num_devices, matches, num_matches, specified_devices,
473 num_devices_specified, select_mode,
474 maxshowdevs, 0) == -1)
475 xo_errx(1, "%s", devstat_errbuf);
480 /* Return system uptime in nanoseconds */
486 (void)clock_gettime(CLOCK_UPTIME, &sp);
487 return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
491 fill_vmmeter(struct __vmmeter *vmmp)
493 struct vmmeter vm_cnt;
497 kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
498 #define GET_COUNTER(name) \
499 vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
500 GET_COUNTER(v_swtch);
502 GET_COUNTER(v_syscall);
505 GET_COUNTER(v_vm_faults);
506 GET_COUNTER(v_io_faults);
507 GET_COUNTER(v_cow_faults);
508 GET_COUNTER(v_cow_optim);
510 GET_COUNTER(v_ozfod);
511 GET_COUNTER(v_swapin);
512 GET_COUNTER(v_swapout);
513 GET_COUNTER(v_swappgsin);
514 GET_COUNTER(v_swappgsout);
515 GET_COUNTER(v_vnodein);
516 GET_COUNTER(v_vnodeout);
517 GET_COUNTER(v_vnodepgsin);
518 GET_COUNTER(v_vnodepgsout);
519 GET_COUNTER(v_intrans);
520 GET_COUNTER(v_tfree);
521 GET_COUNTER(v_forks);
522 GET_COUNTER(v_vforks);
523 GET_COUNTER(v_rforks);
524 GET_COUNTER(v_kthreads);
525 GET_COUNTER(v_forkpages);
526 GET_COUNTER(v_vforkpages);
527 GET_COUNTER(v_rforkpages);
528 GET_COUNTER(v_kthreadpages);
531 #define GET_VM_STATS(cat, name) do { \
532 size = sizeof(vmmp->name); \
533 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size); \
536 GET_VM_STATS(sys, v_swtch);
537 GET_VM_STATS(sys, v_trap);
538 GET_VM_STATS(sys, v_syscall);
539 GET_VM_STATS(sys, v_intr);
540 GET_VM_STATS(sys, v_soft);
543 GET_VM_STATS(vm, v_vm_faults);
544 GET_VM_STATS(vm, v_io_faults);
545 GET_VM_STATS(vm, v_cow_faults);
546 GET_VM_STATS(vm, v_cow_optim);
547 GET_VM_STATS(vm, v_zfod);
548 GET_VM_STATS(vm, v_ozfod);
549 GET_VM_STATS(vm, v_swapin);
550 GET_VM_STATS(vm, v_swapout);
551 GET_VM_STATS(vm, v_swappgsin);
552 GET_VM_STATS(vm, v_swappgsout);
553 GET_VM_STATS(vm, v_vnodein);
554 GET_VM_STATS(vm, v_vnodeout);
555 GET_VM_STATS(vm, v_vnodepgsin);
556 GET_VM_STATS(vm, v_vnodepgsout);
557 GET_VM_STATS(vm, v_intrans);
558 GET_VM_STATS(vm, v_reactivated);
559 GET_VM_STATS(vm, v_pdwakeups);
560 GET_VM_STATS(vm, v_pdpages);
561 GET_VM_STATS(vm, v_pdshortfalls);
562 GET_VM_STATS(vm, v_dfree);
563 GET_VM_STATS(vm, v_pfree);
564 GET_VM_STATS(vm, v_tfree);
565 GET_VM_STATS(vm, v_page_size);
566 GET_VM_STATS(vm, v_page_count);
567 GET_VM_STATS(vm, v_free_reserved);
568 GET_VM_STATS(vm, v_free_target);
569 GET_VM_STATS(vm, v_free_min);
570 GET_VM_STATS(vm, v_free_count);
571 GET_VM_STATS(vm, v_wire_count);
572 GET_VM_STATS(vm, v_active_count);
573 GET_VM_STATS(vm, v_inactive_target);
574 GET_VM_STATS(vm, v_inactive_count);
575 GET_VM_STATS(vm, v_laundry_count);
576 GET_VM_STATS(vm, v_pageout_free_min);
577 GET_VM_STATS(vm, v_interrupt_free_min);
578 /*GET_VM_STATS(vm, v_free_severe);*/
579 GET_VM_STATS(vm, v_forks);
580 GET_VM_STATS(vm, v_vforks);
581 GET_VM_STATS(vm, v_rforks);
582 GET_VM_STATS(vm, v_kthreads);
583 GET_VM_STATS(vm, v_forkpages);
584 GET_VM_STATS(vm, v_vforkpages);
585 GET_VM_STATS(vm, v_rforkpages);
586 GET_VM_STATS(vm, v_kthreadpages);
592 fill_vmtotal(struct vmtotal *vmtp)
598 xo_errx(1, "not implemented");
600 size = sizeof(*vmtp);
601 mysysctl("vm.vmtotal", vmtp, &size);
602 if (size != sizeof(*vmtp))
603 xo_errx(1, "vm.total size mismatch");
607 /* Determine how many cpu columns, and what index they are in kern.cp_times */
609 getcpuinfo(u_long *maskp, int *maxidp)
614 int empty, i, j, maxcpu, maxid, ncpus;
617 xo_errx(1, "not implemented");
620 size = sizeof(maxcpu);
621 mysysctl("kern.smp.maxcpus", &maxcpu, &size);
622 if (size != sizeof(maxcpu))
623 xo_errx(1, "sysctl kern.smp.maxcpus");
624 size = sizeof(long) * maxcpu * CPUSTATES;
625 times = malloc(size);
627 xo_err(1, "malloc %zd bytes", size);
628 mysysctl("kern.cp_times", times, &size);
629 maxid = (size / CPUSTATES / sizeof(long)) - 1;
630 for (i = 0; i <= maxid; i++) {
632 for (j = 0; empty && j < CPUSTATES; j++) {
633 if (times[i * CPUSTATES + j] != 0)
650 prthuman(const char *name, uint64_t val, int size)
656 snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
658 if (size < 5 || size > 9)
659 xo_errx(1, "doofus");
660 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
661 humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
662 xo_attr("value", "%ju", (uintmax_t) val);
663 xo_emit(fmt, size, buf);
667 dovmstat(unsigned int interval, int reps)
669 struct clockinfo clockrate;
670 struct vmtotal total;
671 struct devinfo *tmp_dinfo;
674 time_t uptime, halfuptime;
675 int ncpus, maxid, rate_adj, retval;
677 uptime = getuptime() / 1000000000LL;
678 halfuptime = uptime / 2;
685 * If the user stops the program (control-Z) and then resumes it,
686 * print out the header again.
688 (void)signal(SIGCONT, needhdr);
691 * If our standard output is a tty, then install a SIGWINCH handler
692 * and set wresized so that our first iteration through the main
693 * vmstat loop will peek at the terminal's current rows to find out
694 * how many lines can fit in a screenful of output.
696 if (isatty(fileno(stdout)) != 0) {
698 (void)signal(SIGWINCH, needresize);
701 winlines = VMSTAT_DEFAULT_LINES;
705 if (namelist[X_STATHZ].n_type != 0 &&
706 namelist[X_STATHZ].n_value != 0)
707 kread(X_STATHZ, &hz, sizeof(hz));
709 kread(X_HZ, &hz, sizeof(hz));
711 size = sizeof(clockrate);
712 mysysctl("kern.clockrate", &clockrate, &size);
713 if (size != sizeof(clockrate))
714 xo_errx(1, "clockrate size mismatch");
719 ncpus = getcpuinfo(&cpumask, &maxid);
720 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
721 cur_cp_times = calloc(1, size_cp_times);
722 last_cp_times = calloc(1, size_cp_times);
726 printhdr(maxid, cpumask);
728 if (kvm_getcptime(kd, cur.cp_time) < 0)
729 xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
731 size = sizeof(cur.cp_time);
732 mysysctl("kern.cp_time", &cur.cp_time, &size);
733 if (size != sizeof(cur.cp_time))
734 xo_errx(1, "cp_time size mismatch");
737 size = size_cp_times;
738 mysysctl("kern.cp_times", cur_cp_times, &size);
739 if (size != size_cp_times)
740 xo_errx(1, "cp_times mismatch");
743 tmp_dinfo = last.dinfo;
744 last.dinfo = cur.dinfo;
745 cur.dinfo = tmp_dinfo;
746 last.snap_time = cur.snap_time;
749 * Here what we want to do is refresh our device stats.
750 * getdevs() returns 1 when the device list has changed.
751 * If the device list has changed, we want to go through
752 * the selection process again, in case a device that we
753 * were previously displaying has gone away.
755 switch (devstat_getdevs(NULL, &cur)) {
757 xo_errx(1, "%s", devstat_errbuf);
760 num_devices = cur.dinfo->numdevs;
761 generation = cur.dinfo->generation;
763 retval = devstat_selectdevs(&dev_select, &num_selected,
764 &num_selections, &select_generation,
765 generation, cur.dinfo->devices,
766 num_devices, matches, num_matches,
768 num_devices_specified, select_mode,
772 xo_errx(1, "%s", devstat_errbuf);
775 printhdr(maxid, cpumask);
786 fill_vmtotal(&total);
787 xo_open_container("processes");
788 xo_emit("{:runnable/%1d} {:waiting/%ld} "
789 "{:swapped-out/%ld}", total.t_rq - 1, total.t_dw +
790 total.t_pw, total.t_sw);
791 xo_close_container("processes");
792 xo_open_container("memory");
793 #define vmstat_pgtok(a) ((uintmax_t)(a) * (sum.v_page_size >> 10))
794 #define rate(x) (((x) * rate_adj + halfuptime) / uptime) /* round */
797 prthuman("available-memory",
798 total.t_avm * (uint64_t)sum.v_page_size, 5);
800 prthuman("free-memory",
801 total.t_free * (uint64_t)sum.v_page_size, 5);
805 xo_emit("{:available-memory/%7ju}",
806 vmstat_pgtok(total.t_avm));
808 xo_emit("{:free-memory/%7ju}",
809 vmstat_pgtok(total.t_free));
812 xo_emit("{:total-page-faults/%5lu} ",
813 (unsigned long)rate(sum.v_vm_faults -
815 xo_close_container("memory");
817 xo_open_container("paging-rates");
818 xo_emit("{:page-reactivated/%3lu} ",
819 (unsigned long)rate(sum.v_reactivated -
820 osum.v_reactivated));
821 xo_emit("{:paged-in/%3lu} ",
822 (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
823 (osum.v_swapin + osum.v_vnodein)));
824 xo_emit("{:paged-out/%3lu} ",
825 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
826 (osum.v_swapout + osum.v_vnodeout)));
827 xo_emit("{:freed/%5lu} ",
828 (unsigned long)rate(sum.v_tfree - osum.v_tfree));
829 xo_emit("{:scanned/%4lu} ",
830 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
831 xo_close_container("paging-rates");
834 xo_open_container("fault-rates");
835 xo_emit("{:interrupts/%4lu} {:system-calls/%5lu} "
836 "{:context-switches/%5lu}",
837 (unsigned long)rate(sum.v_intr - osum.v_intr),
838 (unsigned long)rate(sum.v_syscall - osum.v_syscall),
839 (unsigned long)rate(sum.v_swtch - osum.v_swtch));
840 xo_close_container("fault-rates");
842 pcpustats(cpumask, maxid);
847 if (reps >= 0 && --reps <= 0)
853 * We round upward to avoid losing low-frequency events
854 * (i.e., >= 1 per interval but < 1 per millisecond).
857 halfuptime = (uptime + 1) / 2;
860 (void)usleep(interval * 1000);
865 printhdr(int maxid, u_long cpumask)
869 num_shown = MIN(num_selected, maxshowdevs);
871 xo_emit("{T:procs} {T:memory} {T:/page%*s}", 19, "");
873 xo_emit("{T:procs} {T:memory} {T:/page%*s}", 19, "");
875 xo_emit(" {T:/disks %*s}", num_shown * 4 - 7, "");
876 else if (num_shown == 1)
877 xo_emit(" {T:disks}");
878 xo_emit(" {T:faults} ");
880 for (i = 0; i <= maxid; i++) {
881 if (cpumask & (1ul << i))
882 xo_emit(" {T:/cpu%d} ", i);
886 xo_emit(" {T:cpu}\n");
888 xo_emit("{T:r} {T:b} {T:w} {T:avm} {T:fre} {T:flt} {T:re}"
889 " {T:pi} {T:po} {T:fr} {T:sr} ");
891 xo_emit("{T:r} {T:b} {T:w} {T:avm} {T:fre} {T:flt} "
892 "{T:re} {T:pi} {T:po} {T:fr} {T:sr} ");
894 for (i = 0; i < num_devices; i++)
895 if ((dev_select[i].selected) &&
896 (dev_select[i].selected <= maxshowdevs))
897 xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
898 dev_select[i].device_name[1],
899 dev_select[i].unit_number);
900 xo_emit(" {T:in} {T:sy} {T:cs}");
902 for (i = 0; i <= maxid; i++) {
903 if (cpumask & (1ul << i))
904 xo_emit(" {T:us} {T:sy} {T:id}");
908 xo_emit(" {T:us} {T:sy} {T:id}\n");
915 * Force a header to be prepended to the next output.
918 needhdr(int dummy __unused)
925 * When the terminal is resized, force an update of the maximum number of rows
926 * printed between each header repetition. Then force a new header to be
927 * prepended to the next output.
930 needresize(int signo __unused)
938 * Update the global `winlines' count of terminal rows.
947 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
948 if (status == -1 && errno == EINTR)
950 else if (status == -1)
953 winlines = w.ws_row - 3;
955 winlines = VMSTAT_DEFAULT_LINES;
960 * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
969 unsigned int pgintime, rectime;
971 kread(X_REC, &rectime, sizeof(rectime));
972 kread(X_PGIN, &pgintime, sizeof(pgintime));
973 kread(X_SUM, &sum, sizeof(sum));
974 xo_emit("{:page-reclaims/%u} {N:reclaims}, "
975 "{:reclaim-time/%u} {N:total time (usec)}\n",
976 sum.v_pgrec, rectime);
977 xo_emit("{L:average}: {:reclaim-average/%u} {N:usec \\/ reclaim}\n",
978 rectime / sum.v_pgrec);
980 xo_emit("{:page-ins/%u} {N:page ins}, "
981 "{:page-in-time/%u} {N:total time (msec)}\n",
982 sum.v_pgin, pgintime / 10);
983 xo_emit("{L:average}: {:average/%8.1f} {N:msec \\/ page in}\n",
984 pgintime / (sum.v_pgin * 10.0));
989 pct(long top, long bot)
995 ans = (quad_t)top * 100 / bot;
999 #define PCT(top, bot) pct((long)(top), (long)(bot))
1004 struct nchstats lnchstats;
1009 xo_open_container("summary-statistics");
1010 xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1012 xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1014 xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1016 xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1017 xo_emit("{:system-calls/%9u} {N:system calls}\n",
1019 xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1021 xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1022 xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1024 xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1026 xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1028 xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1030 xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1032 xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1034 xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1036 xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1038 xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1040 xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
1042 xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1044 xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
1045 "daemon}\n", sum.v_pdpages);
1046 xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
1047 "shortfalls}\n", sum.v_pdshortfalls);
1048 xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1050 xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1052 xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
1053 "optimized faults}\n", sum.v_cow_optim);
1054 xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1056 xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1058 xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1060 xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1062 xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1064 xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
1065 "kernel thread creation}\n", sum.v_kthreadpages);
1066 xo_emit("{:faults-from-fork/%9u} {N:pages affected by fork}()\n",
1068 xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1070 xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1072 xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1074 xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1076 xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1078 xo_emit("{:active-pages/%9u} {N:pages active}\n",
1079 sum.v_active_count);
1080 xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1081 sum.v_inactive_count);
1082 xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1083 sum.v_laundry_count);
1084 xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1086 xo_emit("{:free-pages/%9u} {N:pages free}\n",
1088 xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1090 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1092 size = sizeof(lnchstats);
1093 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1094 if (size != sizeof(lnchstats))
1095 xo_errx(1, "vfs.cache.nchstats size mismatch");
1097 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1098 lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1099 lnchstats.ncs_miss + lnchstats.ncs_long;
1100 xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1102 xo_emit("{P:/%9s} {N:cache hits} "
1103 "({:positive-cache-hits/%ld}% pos + "
1104 "{:negative-cache-hits/%ld}% {N:neg}) "
1105 "system {:cache-hit-percent/%ld}% per-directory\n",
1106 "", PCT(lnchstats.ncs_goodhits, nchtotal),
1107 PCT(lnchstats.ncs_neghits, nchtotal),
1108 PCT(lnchstats.ncs_pass2, nchtotal));
1109 xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1110 "{L:falsehits} {:false-hits/%ld}%, "
1111 "{L:toolong} {:too-long/%ld}%\n", "",
1112 PCT(lnchstats.ncs_badhits, nchtotal),
1113 PCT(lnchstats.ncs_falsehits, nchtotal),
1114 PCT(lnchstats.ncs_long, nchtotal));
1115 xo_close_container("summary-statistics");
1123 xo_open_container("fork-statistics");
1124 xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1125 "{L:average} {:fork-average/%.2f}\n",
1126 sum.v_forks, sum.v_forkpages,
1127 sum.v_forks == 0 ? 0.0 :
1128 (double)sum.v_forkpages / sum.v_forks);
1129 xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1130 "{L:average} {:vfork-average/%.2f}\n",
1131 sum.v_vforks, sum.v_vforkpages,
1132 sum.v_vforks == 0 ? 0.0 :
1133 (double)sum.v_vforkpages / sum.v_vforks);
1134 xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1135 "{L:average} {:rfork-average/%.2f}\n",
1136 sum.v_rforks, sum.v_rforkpages,
1137 sum.v_rforks == 0 ? 0.0 :
1138 (double)sum.v_rforkpages / sum.v_rforks);
1139 xo_close_container("fork-statistics");
1145 long double busy_seconds, transfers_per_second;
1149 for (state = 0; state < CPUSTATES; ++state) {
1150 tmp = cur.cp_time[state];
1151 cur.cp_time[state] -= last.cp_time[state];
1152 last.cp_time[state] = tmp;
1155 busy_seconds = cur.snap_time - last.snap_time;
1157 xo_open_list("device");
1158 for (dn = 0; dn < num_devices; dn++) {
1159 if (dev_select[dn].selected == 0 ||
1160 dev_select[dn].selected > maxshowdevs)
1163 di = dev_select[dn].position;
1165 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1166 &last.dinfo->devices[di], busy_seconds,
1167 DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1169 xo_errx(1, "%s", devstat_errbuf);
1171 xo_open_instance("device");
1172 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1173 dev_select[dn].device_name[0],
1174 dev_select[dn].device_name[1],
1175 dev_select[dn].unit_number,
1176 transfers_per_second);
1177 xo_close_instance("device");
1179 xo_close_list("device");
1183 percent(const char *name, double pctv, int *over)
1189 snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1190 l = snprintf(buf, sizeof(buf), "%.0f", pctv);
1191 if (l == 1 && *over) {
1192 xo_emit(fmt, 1, buf);
1195 xo_emit(fmt, 2, buf);
1207 for (state = 0; state < CPUSTATES; ++state)
1208 total += cur.cp_time[state];
1210 lpct = 100.0 / total;
1214 xo_open_container("cpu-statistics");
1215 percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
1217 percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
1219 percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1220 xo_close_container("cpu-statistics");
1224 pcpustats(u_long cpumask, int maxid)
1230 /* devstats does this for cp_time */
1231 for (i = 0; i <= maxid; i++) {
1232 if ((cpumask & (1ul << i)) == 0)
1234 for (state = 0; state < CPUSTATES; ++state) {
1235 tmp = cur_cp_times[i * CPUSTATES + state];
1236 cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1238 last_cp_times[i * CPUSTATES + state] = tmp;
1243 xo_open_list("cpu");
1244 for (i = 0; i <= maxid; i++) {
1245 if ((cpumask & (1ul << i)) == 0)
1247 xo_open_instance("cpu");
1248 xo_emit("{ke:name/%d}", i);
1250 for (state = 0; state < CPUSTATES; ++state)
1251 total += cur_cp_times[i * CPUSTATES + state];
1253 lpct = 100.0 / total;
1256 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1257 cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1258 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1259 cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1260 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1262 xo_close_instance("cpu");
1264 xo_close_list("cpu");
1268 read_intrcnts(unsigned long **intrcnts)
1273 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1274 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1276 kread(X_INTRCNT, *intrcnts, intrcntlen);
1278 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1279 *intrcnts = reallocf(*intrcnts, intrcntlen);
1280 if (*intrcnts == NULL)
1281 err(1, "reallocf()");
1282 if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1287 return (intrcntlen / sizeof(unsigned long));
1291 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1292 char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
1294 unsigned long *intrcnt, *old_intrcnt;
1296 uint64_t inttotal, old_inttotal, total_count, total_rate;
1297 unsigned long count, rate;
1302 intrname = intrnames;
1303 xo_open_list("interrupt");
1304 for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1305 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1306 count = *intrcnt - *old_intrcnt;
1307 rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
1308 xo_open_instance("interrupt");
1309 xo_emit("{d:name/%-*s}{ket:name/%s} "
1310 "{:total/%20lu} {:rate/%10lu}\n",
1311 (int)istrnamlen, intrname, intrname, count, rate);
1312 xo_close_instance("interrupt");
1314 intrname += strlen(intrname) + 1;
1315 inttotal += *intrcnt++;
1316 old_inttotal += *old_intrcnt++;
1318 total_count = inttotal - old_inttotal;
1319 total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1320 xo_close_list("interrupt");
1321 xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
1322 "{:total-rate/%10ju}\n", (int)istrnamlen,
1323 "Total", (uintmax_t)total_count, (uintmax_t)total_rate);
1327 dointr(unsigned int interval, int reps)
1329 unsigned long *intrcnts, *old_intrcnts;
1330 char *intrname, *intrnames;
1331 long long period_ms, old_uptime, uptime;
1332 size_t clen, inamlen, istrnamlen;
1335 old_intrcnts = NULL;
1336 uptime = getuptime();
1338 /* Get the names of each interrupt source */
1340 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1341 if ((intrnames = malloc(inamlen)) == NULL)
1342 xo_err(1, "malloc()");
1343 kread(X_INTRNAMES, intrnames, inamlen);
1345 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1346 if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1347 xo_err(1, "reallocf()");
1348 if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1353 /* Determine the length of the longest interrupt name */
1354 intrname = intrnames;
1355 istrnamlen = strlen("interrupt");
1356 while(*intrname != '\0') {
1357 clen = strlen(intrname);
1358 if (clen > istrnamlen)
1360 intrname += strlen(intrname) + 1;
1362 xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1363 (int)istrnamlen, "interrupt", "total", "rate");
1366 * Loop reps times printing differential interrupt counts. If reps is
1367 * zero, then run just once, printing total counts
1369 xo_open_container("interrupt-statistics");
1371 period_ms = uptime / 1000000;
1373 nintr = read_intrcnts(&intrcnts);
1375 * Initialize old_intrcnts to 0 for the first pass, so
1376 * print_intrcnts will print total interrupts since boot
1378 if (old_intrcnts == NULL) {
1379 old_intrcnts = calloc(nintr, sizeof(unsigned long));
1380 if (old_intrcnts == NULL)
1381 xo_err(1, "calloc()");
1384 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1385 istrnamlen, period_ms);
1389 old_intrcnts = intrcnts;
1390 if (reps >= 0 && --reps <= 0)
1392 usleep(interval * 1000);
1393 old_uptime = uptime;
1394 uptime = getuptime();
1395 period_ms = (uptime - old_uptime) / 1000000;
1398 xo_close_container("interrupt-statistics");
1402 domemstat_malloc(void)
1404 struct memory_type_list *mtlp;
1405 struct memory_type *mtp;
1406 int error, first, i;
1408 mtlp = memstat_mtl_alloc();
1410 xo_warn("memstat_mtl_alloc");
1414 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1415 xo_warnx("memstat_sysctl_malloc: %s",
1416 memstat_strerror(memstat_mtl_geterror(mtlp)));
1420 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1421 error = memstat_mtl_geterror(mtlp);
1422 if (error == MEMSTAT_ERROR_KVM)
1423 xo_warnx("memstat_kvm_malloc: %s",
1426 xo_warnx("memstat_kvm_malloc: %s",
1427 memstat_strerror(error));
1430 xo_open_container("malloc-statistics");
1431 xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%7s} {T:/%8s} {T:Size(s)}\n",
1432 "Type", "InUse", "MemUse", "HighUse", "Requests");
1433 xo_open_list("memory");
1434 for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1435 mtp = memstat_mtl_next(mtp)) {
1436 if (memstat_get_numallocs(mtp) == 0 &&
1437 memstat_get_count(mtp) == 0)
1439 xo_open_instance("memory");
1440 xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
1441 "{:memory-use/%5ju}{U:K} {:high-use/%7s} "
1442 "{:requests/%8ju} ",
1443 memstat_get_name(mtp), (uintmax_t)memstat_get_count(mtp),
1444 ((uintmax_t)memstat_get_bytes(mtp) + 1023) / 1024, "-",
1445 (uintmax_t)memstat_get_numallocs(mtp));
1447 xo_open_list("size");
1448 for (i = 0; i < 32; i++) {
1449 if (memstat_get_sizemask(mtp) & (1 << i)) {
1452 xo_emit("{l:size/%d}", 1 << (i + 4));
1456 xo_close_list("size");
1457 xo_close_instance("memory");
1460 xo_close_list("memory");
1461 xo_close_container("malloc-statistics");
1462 memstat_mtl_free(mtlp);
1466 domemstat_zone(void)
1468 struct memory_type_list *mtlp;
1469 struct memory_type *mtp;
1471 char name[MEMTYPE_MAXNAME + 1];
1473 mtlp = memstat_mtl_alloc();
1475 xo_warn("memstat_mtl_alloc");
1479 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1480 xo_warnx("memstat_sysctl_uma: %s",
1481 memstat_strerror(memstat_mtl_geterror(mtlp)));
1485 if (memstat_kvm_uma(mtlp, kd) < 0) {
1486 error = memstat_mtl_geterror(mtlp);
1487 if (error == MEMSTAT_ERROR_KVM)
1488 xo_warnx("memstat_kvm_uma: %s",
1491 xo_warnx("memstat_kvm_uma: %s",
1492 memstat_strerror(error));
1495 xo_open_container("memory-zone-statistics");
1496 xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} "
1497 "{T:/%4s} {T:/%4s}\n\n", "ITEM", "SIZE",
1498 "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
1499 xo_open_list("zone");
1500 for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1501 mtp = memstat_mtl_next(mtp)) {
1502 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1504 xo_open_instance("zone");
1505 xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6ju}, "
1506 "{:limit/%6ju},{:used/%8ju},"
1507 "{:free/%8ju},{:requests/%8ju},"
1508 "{:fail/%4ju},{:sleep/%4ju}\n", name,
1509 memstat_get_name(mtp),
1510 (uintmax_t)memstat_get_size(mtp),
1511 (uintmax_t)memstat_get_countlimit(mtp),
1512 (uintmax_t)memstat_get_count(mtp),
1513 (uintmax_t)memstat_get_free(mtp),
1514 (uintmax_t)memstat_get_numallocs(mtp),
1515 (uintmax_t)memstat_get_failures(mtp),
1516 (uintmax_t)memstat_get_sleeps(mtp));
1517 xo_close_instance("zone");
1519 memstat_mtl_free(mtlp);
1520 xo_close_list("zone");
1521 xo_close_container("memory-zone-statistics");
1526 display_object(struct kinfo_vmobject *kvo)
1530 xo_open_instance("object");
1531 xo_emit("{:resident/%5ju} ", (uintmax_t)kvo->kvo_resident);
1532 xo_emit("{:active/%5ju} ", (uintmax_t)kvo->kvo_active);
1533 xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
1534 xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
1535 xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
1536 switch (kvo->kvo_memattr) {
1537 #ifdef VM_MEMATTR_UNCACHEABLE
1538 case VM_MEMATTR_UNCACHEABLE:
1542 #ifdef VM_MEMATTR_WRITE_COMBINING
1543 case VM_MEMATTR_WRITE_COMBINING:
1547 #ifdef VM_MEMATTR_WRITE_THROUGH
1548 case VM_MEMATTR_WRITE_THROUGH:
1552 #ifdef VM_MEMATTR_WRITE_PROTECTED
1553 case VM_MEMATTR_WRITE_PROTECTED:
1557 #ifdef VM_MEMATTR_WRITE_BACK
1558 case VM_MEMATTR_WRITE_BACK:
1562 #ifdef VM_MEMATTR_WEAK_UNCACHEABLE
1563 case VM_MEMATTR_WEAK_UNCACHEABLE:
1567 #ifdef VM_MEMATTR_WB_WA
1568 case VM_MEMATTR_WB_WA:
1572 #ifdef VM_MEMATTR_NOCACHE
1573 case VM_MEMATTR_NOCACHE:
1577 #ifdef VM_MEMATTR_DEVICE
1578 case VM_MEMATTR_DEVICE:
1582 #ifdef VM_MEMATTR_CACHEABLE
1583 case VM_MEMATTR_CACHEABLE:
1587 #ifdef VM_MEMATTR_PREFETCHABLE
1588 case VM_MEMATTR_PREFETCHABLE:
1596 xo_emit("{:attribute/%-3s} ", str);
1597 switch (kvo->kvo_type) {
1598 case KVME_TYPE_NONE:
1601 case KVME_TYPE_DEFAULT:
1604 case KVME_TYPE_VNODE:
1607 case KVME_TYPE_SWAP:
1610 case KVME_TYPE_DEVICE:
1613 case KVME_TYPE_PHYS:
1616 case KVME_TYPE_DEAD:
1622 case KVME_TYPE_MGTDEVICE:
1625 case KVME_TYPE_UNKNOWN:
1630 xo_emit("{:type/%-2s} ", str);
1631 xo_emit("{:path/%-s}\n", kvo->kvo_path);
1632 xo_close_instance("object");
1638 struct kinfo_vmobject *kvo;
1641 kvo = kinfo_getvmobject(&cnt);
1643 xo_warn("Failed to fetch VM object list");
1646 xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
1647 "{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
1648 xo_open_list("object");
1649 for (i = 0; i < cnt; i++)
1650 display_object(&kvo[i]);
1652 xo_close_list("object");
1656 * kread reads something from the kernel, given its nlist index.
1659 kreado(int nlx, void *addr, size_t size, size_t offset)
1663 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1664 sym = namelist[nlx].n_name;
1667 xo_errx(1, "symbol %s not defined", sym);
1669 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1671 sym = namelist[nlx].n_name;
1674 xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
1679 kread(int nlx, void *addr, size_t size)
1682 kreado(nlx, addr, size, 0);
1689 "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1690 " [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");