2 * Copyright (c) 1980, 1986, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1986, 1991, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)vmstat.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/vmstat/vmstat.c,v 1.38.2.4 2001/07/31 19:52:41 tmm Exp $
36 * $DragonFly: src/usr.bin/vmstat/vmstat.c,v 1.23 2008/02/19 18:19:15 thomas Exp $
39 #define _KERNEL_STRUCTURES
41 #include <sys/param.h>
45 #include <sys/namei.h>
46 #include <sys/malloc.h>
47 #include <sys/signal.h>
48 #include <sys/fcntl.h>
49 #include <sys/ioctl.h>
50 #include <sys/sysctl.h>
51 #include <sys/vmmeter.h>
53 #include <vm/vm_param.h>
71 static struct nlist namelist
[] = {
73 { "_boottime", 0, 0, 0, 0 },
75 { "_nchstats", 0, 0, 0, 0 },
76 #define X_KMEMSTATISTICS 2
77 { "_kmemstatistics", 0, 0, 0, 0 },
79 { "_zlist", 0, 0, 0, 0 },
82 { "_deficit", 0, 0, 0, 0 },
84 { "_forkstat", 0, 0, 0, 0 },
86 { "_rectime", 0, 0, 0, 0 },
88 { "_pgintime", 0, 0, 0, 0 },
90 { "_xstats", 0, 0, 0, 0 },
98 struct statinfo cur
, last
;
99 int num_devices
, maxshowdevs
;
101 struct device_selection
*dev_select
;
103 struct devstat_match
*matches
;
105 int num_devices_specified
, num_selections
;
106 long select_generation
;
107 char **specified_devices
;
108 devstat_select_mode select_mode
;
110 struct vmmeter vmm
, ovmm
;
111 struct vmstats vms
, ovms
;
119 struct kinfo_cputime cp_time
, old_cp_time
, diff_cp_time
;
121 #define FORKSTAT 0x01
122 #define INTRSTAT 0x02
125 #define TIMESTAT 0x10
127 #define ZMEMSTAT 0x40
129 static void cpustats(void);
130 static void dointr(void);
131 static void domem(void);
132 static void dosum(void);
133 static void dozmem(void);
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);
143 static void dotimes(void); /* Not implemented */
144 static void doforkst(void);
146 static void printhdr(void);
147 static void devstats(void);
150 main(int argc
, char **argv
)
153 u_int interval
; /* milliseconds */
156 char errbuf
[_POSIX2_LINE_MAX
];
158 memf
= nlistf
= NULL
;
159 interval
= reps
= todo
= 0;
161 while ((c
= getopt(argc
, argv
, "c:fiM:mN:n:p:stvw:z")) != -1) {
170 errx(EX_USAGE
, "sorry, -f is not (re)implemented yet");
187 maxshowdevs
= atoi(optarg
);
189 errx(1, "number of devices %d is < 0",
193 if (buildmatch(optarg
, &matches
, &num_matches
) != 0)
194 errx(1, "%s", devstat_errbuf
);
203 errx(EX_USAGE
, "sorry, -t is not (re)implemented yet");
210 interval
= (u_int
)(strtod(optarg
, NULL
) * 1000.0);
226 * Discard setgid privileges if not the running kernel so that bad
227 * guys can't print interesting stuff from kernel memory.
229 if (nlistf
!= NULL
|| memf
!= NULL
)
232 kd
= kvm_openfiles(nlistf
, memf
, NULL
, O_RDONLY
, errbuf
);
234 errx(1, "kvm_openfiles: %s", errbuf
);
236 if ((c
= kvm_nlist(kd
, namelist
)) != 0) {
238 warnx("undefined symbols:");
239 for (c
= 0; c
< (int)__arysize(namelist
); c
++)
240 if (namelist
[c
].n_type
== 0)
241 fprintf(stderr
, " %s",
245 warnx("kvm_nlist: %s", kvm_geterr(kd
));
250 struct winsize winsize
;
253 * Make sure that the userland devstat version matches the
254 * kernel devstat version. If not, exit and print a
255 * message informing the user of his mistake.
257 if (checkversion() < 0)
258 errx(1, "%s", devstat_errbuf
);
261 argv
= getdrivedata(argv
);
263 ioctl(STDOUT_FILENO
, TIOCGWINSZ
, (char *)&winsize
);
264 if (winsize
.ws_row
> 0)
265 winlines
= winsize
.ws_row
;
269 #define BACKWARD_COMPATIBILITY
270 #ifdef BACKWARD_COMPATIBILITY
272 interval
= (u_int
)(strtod(*argv
, NULL
) * 1000.0);
302 dovmstat(interval
, reps
);
307 getdrivedata(char **argv
)
309 if ((num_devices
= getnumdevs()) < 0)
310 errx(1, "%s", devstat_errbuf
);
312 cur
.dinfo
= (struct devinfo
*)malloc(sizeof(struct devinfo
));
313 last
.dinfo
= (struct devinfo
*)malloc(sizeof(struct devinfo
));
314 bzero(cur
.dinfo
, sizeof(struct devinfo
));
315 bzero(last
.dinfo
, sizeof(struct devinfo
));
317 if (getdevs(&cur
) == -1)
318 errx(1, "%s", devstat_errbuf
);
320 num_devices
= cur
.dinfo
->numdevs
;
321 generation
= cur
.dinfo
->generation
;
323 specified_devices
= (char **)malloc(sizeof(char *));
324 for (num_devices_specified
= 0; *argv
; ++argv
) {
327 num_devices_specified
++;
328 specified_devices
= (char **)realloc(specified_devices
,
330 num_devices_specified
);
331 specified_devices
[num_devices_specified
- 1] = *argv
;
335 if (nflag
== 0 && maxshowdevs
< num_devices_specified
)
336 maxshowdevs
= num_devices_specified
;
339 * People are generally only interested in disk statistics when
340 * they're running vmstat. So, that's what we're going to give
341 * them if they don't specify anything by default. We'll also give
342 * them any other random devices in the system so that we get to
343 * maxshowdevs devices, if that many devices exist. If the user
344 * specifies devices on the command line, either through a pattern
345 * match or by naming them explicitly, we will give the user only
348 if ((num_devices_specified
== 0) && (num_matches
== 0)) {
349 if (buildmatch("da", &matches
, &num_matches
) != 0)
350 errx(1, "%s", devstat_errbuf
);
352 select_mode
= DS_SELECT_ADD
;
354 select_mode
= DS_SELECT_ONLY
;
357 * At this point, selectdevs will almost surely indicate that the
358 * device list has changed, so we don't look for return values of 0
359 * or 1. If we get back -1, though, there is an error.
361 if (selectdevs(&dev_select
, &num_selected
, &num_selections
,
362 &select_generation
, generation
, cur
.dinfo
->devices
,
363 num_devices
, matches
, num_matches
, specified_devices
,
364 num_devices_specified
, select_mode
,
365 maxshowdevs
, 0) == -1)
366 errx(1, "%s", devstat_errbuf
);
374 static time_t now
, boottime
;
378 kread(X_BOOTTIME
, &boottime
, sizeof(boottime
));
380 uptime
= now
- boottime
;
381 if (uptime
<= 0 || uptime
> 60*60*24*365*10)
382 errx(1, "time makes no sense; namelist must be wrong");
389 dovmstat(u_int interval
, int reps
)
391 struct vmtotal total
;
392 struct devinfo
*tmp_dinfo
;
393 size_t vmm_size
= sizeof(vmm
);
394 size_t vms_size
= sizeof(vms
);
395 size_t vmt_size
= sizeof(total
);
398 signal(SIGCONT
, needhdr
);
403 if (kinfo_get_sched_cputime(&cp_time
))
404 err(1, "kinfo_get_sched_cputime");
406 tmp_dinfo
= last
.dinfo
;
407 last
.dinfo
= cur
.dinfo
;
408 cur
.dinfo
= tmp_dinfo
;
409 last
.busy_time
= cur
.busy_time
;
412 * Here what we want to do is refresh our device stats.
413 * getdevs() returns 1 when the device list has changed.
414 * If the device list has changed, we want to go through
415 * the selection process again, in case a device that we
416 * were previously displaying has gone away.
418 switch (getdevs(&cur
)) {
420 errx(1, "%s", devstat_errbuf
);
425 num_devices
= cur
.dinfo
->numdevs
;
426 generation
= cur
.dinfo
->generation
;
428 retval
= selectdevs(&dev_select
, &num_selected
,
429 &num_selections
, &select_generation
,
430 generation
, cur
.dinfo
->devices
,
431 num_devices
, matches
, num_matches
,
433 num_devices_specified
, select_mode
,
437 errx(1, "%s", devstat_errbuf
);
450 if (sysctlbyname("vm.vmstats", &vms
, &vms_size
, NULL
, 0)) {
451 perror("sysctlbyname: vm.vmstats");
454 if (sysctlbyname("vm.vmmeter", &vmm
, &vmm_size
, NULL
, 0)) {
455 perror("sysctlbyname: vm.vmmeter");
458 if (sysctlbyname("vm.vmtotal", &total
, &vmt_size
, NULL
, 0)) {
459 perror("sysctlbyname: vm.vmtotal");
462 printf("%2d %1d %1d",
463 total
.t_rq
- 1, total
.t_dw
+ total
.t_pw
, total
.t_sw
);
464 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10)
465 #define rate(x) (initial ? (x) : ((x) * 1000 + interval / 2) / interval)
466 printf(" %7ld %6ld ",
467 (long)vmstat_pgtok(total
.t_avm
), (long)vmstat_pgtok(total
.t_free
));
469 (u_long
)rate(vmm
.v_vm_faults
- ovmm
.v_vm_faults
));
471 (u_long
)rate(vmm
.v_reactivated
- ovmm
.v_reactivated
));
473 (u_long
)rate(vmm
.v_swapin
+ vmm
.v_vnodein
-
474 (ovmm
.v_swapin
+ ovmm
.v_vnodein
)));
476 (u_long
)rate(vmm
.v_swapout
+ vmm
.v_vnodeout
-
477 (ovmm
.v_swapout
+ ovmm
.v_vnodeout
)));
479 (u_long
)rate(vmm
.v_tfree
- ovmm
.v_tfree
));
481 (u_long
)rate(vmm
.v_pdpages
- ovmm
.v_pdpages
));
483 printf("%4lu %4lu %3lu ",
484 (u_long
)rate(vmm
.v_intr
- ovmm
.v_intr
),
485 (u_long
)rate(vmm
.v_syscall
- ovmm
.v_syscall
),
486 (u_long
)rate(vmm
.v_swtch
- ovmm
.v_swtch
));
490 if (reps
>= 0 && --reps
<= 0)
493 usleep(interval
* 1000);
503 num_shown
= (num_selected
< maxshowdevs
) ? num_selected
: maxshowdevs
;
504 printf(" procs memory page%*s", 19, "");
506 printf(" disks %*s", num_shown
* 4 - 7, "");
507 else if (num_shown
== 1)
509 printf(" faults cpu\n");
510 printf(" r b w avm fre flt re pi po fr sr ");
511 for (i
= 0; i
< num_devices
; i
++)
512 if ((dev_select
[i
].selected
)
513 && (dev_select
[i
].selected
<= maxshowdevs
))
514 printf("%c%c%d ", dev_select
[i
].device_name
[0],
515 dev_select
[i
].device_name
[1],
516 dev_select
[i
].unit_number
);
517 printf(" in sy cs us sy id\n");
518 hdrcnt
= winlines
- 2;
522 * Force a header to be prepended to the next output.
525 needhdr(__unused
int signo
)
532 pct(long top
, long bot
)
538 ans
= (quad_t
)top
* 100 / bot
;
542 #define PCT(top, bot) pct((long)(top), (long)(bot))
547 struct nchstats
*nch_tmp
, nchstats
;
548 size_t vms_size
= sizeof(vms
);
549 size_t vmm_size
= sizeof(vmm
);
553 size_t nch_size
= sizeof(struct nchstats
) * SMP_MAXCPU
;
555 if (sysctlbyname("vm.vmstats", &vms
, &vms_size
, NULL
, 0)) {
556 perror("sysctlbyname: vm.vmstats");
559 if (sysctlbyname("vm.vmmeter", &vmm
, &vmm_size
, NULL
, 0)) {
560 perror("sysctlbyname: vm.vmstats");
563 printf("%9u cpu context switches\n", vmm
.v_swtch
);
564 printf("%9u device interrupts\n", vmm
.v_intr
);
565 printf("%9u software interrupts\n", vmm
.v_soft
);
566 printf("%9u traps\n", vmm
.v_trap
);
567 printf("%9u system calls\n", vmm
.v_syscall
);
568 printf("%9u kernel threads created\n", vmm
.v_kthreads
);
569 printf("%9u fork() calls\n", vmm
.v_forks
);
570 printf("%9u vfork() calls\n", vmm
.v_vforks
);
571 printf("%9u rfork() calls\n", vmm
.v_rforks
);
572 printf("%9u exec() calls\n", vmm
.v_exec
);
573 printf("%9u swap pager pageins\n", vmm
.v_swapin
);
574 printf("%9u swap pager pages paged in\n", vmm
.v_swappgsin
);
575 printf("%9u swap pager pageouts\n", vmm
.v_swapout
);
576 printf("%9u swap pager pages paged out\n", vmm
.v_swappgsout
);
577 printf("%9u vnode pager pageins\n", vmm
.v_vnodein
);
578 printf("%9u vnode pager pages paged in\n", vmm
.v_vnodepgsin
);
579 printf("%9u vnode pager pageouts\n", vmm
.v_vnodeout
);
580 printf("%9u vnode pager pages paged out\n", vmm
.v_vnodepgsout
);
581 printf("%9u page daemon wakeups\n", vmm
.v_pdwakeups
);
582 printf("%9u pages examined by the page daemon\n", vmm
.v_pdpages
);
583 printf("%9u pages reactivated\n", vmm
.v_reactivated
);
584 printf("%9u copy-on-write faults\n", vmm
.v_cow_faults
);
585 printf("%9u copy-on-write optimized faults\n", vmm
.v_cow_optim
);
586 printf("%9u zero fill pages zeroed\n", vmm
.v_zfod
);
587 printf("%9u zero fill pages prezeroed\n", vmm
.v_ozfod
);
588 printf("%9u intransit blocking page faults\n", vmm
.v_intrans
);
589 printf("%9u total VM faults taken\n", vmm
.v_vm_faults
);
590 printf("%9u pages affected by kernel thread creation\n", vmm
.v_kthreadpages
);
591 printf("%9u pages affected by fork()\n", vmm
.v_forkpages
);
592 printf("%9u pages affected by vfork()\n", vmm
.v_vforkpages
);
593 printf("%9u pages affected by rfork()\n", vmm
.v_rforkpages
);
594 printf("%9u pages freed\n", vmm
.v_tfree
);
595 printf("%9u pages freed by daemon\n", vmm
.v_dfree
);
596 printf("%9u pages freed by exiting processes\n", vmm
.v_pfree
);
597 printf("%9u pages active\n", vms
.v_active_count
);
598 printf("%9u pages inactive\n", vms
.v_inactive_count
);
599 printf("%9u pages in VM cache\n", vms
.v_cache_count
);
600 printf("%9u pages wired down\n", vms
.v_wire_count
);
601 printf("%9u pages free\n", vms
.v_free_count
);
602 printf("%9u bytes per page\n", vms
.v_page_size
);
604 if ((nch_tmp
= malloc(nch_size
)) == NULL
) {
608 if (sysctlbyname("vfs.cache.nchstats", nch_tmp
, &nch_size
, NULL
, 0)) {
609 perror("sysctlbyname vfs.cache.nchstats");
613 if ((nch_tmp
= realloc(nch_tmp
, nch_size
)) == NULL
) {
620 cpucnt
= nch_size
/ sizeof(struct nchstats
);
621 kvm_nch_cpuagg(nch_tmp
, &nchstats
, cpucnt
);
623 nchtotal
= nchstats
.ncs_goodhits
+ nchstats
.ncs_neghits
+
624 nchstats
.ncs_badhits
+ nchstats
.ncs_falsehits
+
626 nchpathtotal
= nchstats
.ncs_longhits
+ nchstats
.ncs_longmiss
;
627 printf("%9ld total path lookups\n", nchpathtotal
);
628 printf("%9ld total component lookups\n", nchtotal
);
630 "%9s cache hits (%ld%% pos + %ld%% neg)\n",
631 "", PCT(nchstats
.ncs_goodhits
, nchtotal
),
632 PCT(nchstats
.ncs_neghits
, nchtotal
));
633 printf("%9s deletions %ld%%, falsehits %ld%%\n", "",
634 PCT(nchstats
.ncs_badhits
, nchtotal
),
635 PCT(nchstats
.ncs_falsehits
, nchtotal
));
645 kread(X_FORKSTAT
, &fks
, sizeof(struct forkstat
));
646 printf("%d forks, %d pages, average %.2f\n",
647 fks
.cntfork
, fks
.sizfork
, (double)fks
.sizfork
/ fks
.cntfork
);
648 printf("%d vforks, %d pages, average %.2f\n",
649 fks
.cntvfork
, fks
.sizvfork
, (double)fks
.sizvfork
/ fks
.cntvfork
);
657 long double transfers_per_second
;
658 long double busy_seconds
;
660 diff_cp_time
.cp_user
= cp_time
.cp_user
- old_cp_time
.cp_user
;
661 diff_cp_time
.cp_nice
= cp_time
.cp_nice
- old_cp_time
.cp_nice
;
662 diff_cp_time
.cp_sys
= cp_time
.cp_sys
- old_cp_time
.cp_sys
;
663 diff_cp_time
.cp_intr
= cp_time
.cp_intr
- old_cp_time
.cp_intr
;
664 diff_cp_time
.cp_idle
= cp_time
.cp_idle
- old_cp_time
.cp_idle
;
665 old_cp_time
= cp_time
;
667 busy_seconds
= compute_etime(cur
.busy_time
, last
.busy_time
);
669 for (dn
= 0; dn
< num_devices
; dn
++) {
672 if ((dev_select
[dn
].selected
== 0)
673 || (dev_select
[dn
].selected
> maxshowdevs
))
676 di
= dev_select
[dn
].position
;
678 if (compute_stats(&cur
.dinfo
->devices
[di
],
679 &last
.dinfo
->devices
[di
], busy_seconds
,
681 NULL
, &transfers_per_second
, NULL
,
683 errx(1, "%s", devstat_errbuf
);
685 printf("%3.0Lf ", transfers_per_second
);
695 total
= diff_cp_time
.cp_user
+ diff_cp_time
.cp_nice
+
696 diff_cp_time
.cp_sys
+ diff_cp_time
.cp_intr
+ diff_cp_time
.cp_idle
;
699 totusage
= 100.0 / total
;
703 (diff_cp_time
.cp_user
+ diff_cp_time
.cp_nice
) * totusage
);
705 (diff_cp_time
.cp_sys
+ diff_cp_time
.cp_intr
) * totusage
);
707 diff_cp_time
.cp_idle
* totusage
);
713 u_long
*intrcnt
, uptime
;
715 size_t nintr
, inamlen
, i
, size
;
720 uptime
= getuptime();
721 if (sysctlbyname("hw.intrnames", NULL
, &inamlen
, NULL
, 0) != 0)
722 errx(1, "sysctlbyname");
723 intrstr
= malloc(inamlen
);
726 sysctlbyname("hw.intrnames", intrstr
, &inamlen
, NULL
, 0);
727 for (nintr
= 0, i
= 0; i
< inamlen
; ++i
) {
731 intrname
= malloc(nintr
* sizeof(char *));
732 for (i
= 0; i
< nintr
; ++i
) {
733 intrname
[i
] = intrstr
;
734 intrstr
+= strlen(intrstr
) + 1;
737 size
= nintr
* sizeof(*intrcnt
);
738 intrcnt
= calloc(nintr
, sizeof(*intrcnt
));
741 sysctlbyname("hw.intrcnt", intrcnt
, &size
, NULL
, 0);
744 for (i
= 0; i
< nintr
; ++i
) {
745 if (nwidth
< (int)strlen(intrname
[i
]))
746 nwidth
= (int)strlen(intrname
[i
]);
748 if (verbose
) nwidth
+= 8;
750 printf("%-*.*s %11s %10s\n",
751 nwidth
, nwidth
, "interrupt", "total", "rate");
753 for (i
= 0; i
< nintr
; ++i
) {
755 char *infop
, irqinfo
[72];
757 if ((named
= strncmp(intrname
[i
], "irq", 3)) != 0 ||
760 if (verbose
&& named
) {
761 snprintf(irqinfo
, sizeof(irqinfo
),
762 "irq%zd: %s", i
, intrname
[i
]);
765 printf("%-*.*s %11lu %10lu\n",
766 nwidth
, nwidth
, infop
,
767 intrcnt
[i
], intrcnt
[i
] / uptime
);
769 inttotal
+= intrcnt
[i
];
771 printf("%-*.*s %11llu %10llu\n",
772 nwidth
, nwidth
, "Total",
773 (long long)inttotal
, (long long)(inttotal
/ uptime
));
776 #define MAX_KMSTATS 1024
784 for (i
= ttl
= 0; i
< SMP_MAXCPU
; ++i
)
792 struct malloc_type
*ks
;
795 long totuse
= 0, totfree
= 0, totreq
= 0;
796 struct malloc_type kmemstats
[MAX_KMSTATS
], *kmsp
;
799 kread(X_KMEMSTATISTICS
, &kmsp
, sizeof(kmsp
));
800 for (nkms
= 0; nkms
< MAX_KMSTATS
&& kmsp
!= NULL
; nkms
++) {
801 if (sizeof(kmemstats
[0]) != kvm_read(kd
, (u_long
)kmsp
,
802 &kmemstats
[nkms
], sizeof(kmemstats
[0])))
803 err(1, "kvm_read(%p)", (void *)kmsp
);
804 if (sizeof(buf
) != kvm_read(kd
,
805 (u_long
)kmemstats
[nkms
].ks_shortdesc
, buf
, sizeof(buf
)))
806 err(1, "kvm_read(%p)",
807 kmemstats
[nkms
].ks_shortdesc
);
808 buf
[sizeof(buf
) - 1] = '\0';
809 kmemstats
[nkms
].ks_shortdesc
= strdup(buf
);
810 kmsp
= kmemstats
[nkms
].ks_next
;
813 warnx("truncated to the first %d memory types", nkms
);
816 "\nMemory statistics by type Type Kern\n");
818 " Type InUse MemUse HighUse Limit Requests Limit Limit\n");
819 for (i
= 0, ks
= &kmemstats
[0]; i
< nkms
; i
++, ks
++) {
820 if (ks
->ks_calls
== 0)
822 printf("%19s%7ld%7ldK%7ldK%8zdK%10jd%5u%6u",
824 cpuagg(ks
->ks_inuse
), (cpuagg(ks
->ks_memuse
) + 1023) / 1024,
825 (ks
->ks_maxused
+ 1023) / 1024,
826 (ks
->ks_limit
+ 1023) / 1024, (intmax_t)ks
->ks_calls
,
827 ks
->ks_limblocks
, ks
->ks_mapblocks
);
829 for (j
= 1 << MINBUCKET
; j
< 1 << (MINBUCKET
+ 16); j
<<= 1) {
830 if ((ks
->ks_size
& j
) == 0)
843 totuse
+= cpuagg(ks
->ks_memuse
);
844 totreq
+= ks
->ks_calls
;
846 printf("\nMemory Totals: In Use Free Requests\n");
847 printf(" %7ldK %6ldK %8ld\n",
848 (totuse
+ 1023) / 1024, (totfree
+ 1023) / 1024, totreq
);
860 if ((buf
= realloc(buf
, bufsize
)) == NULL
)
862 if (sysctlbyname("vm.zone", buf
, &bufsize
, NULL
, 0) == 0)
868 buf
[bufsize
] = '\0'; /* play it safe */
869 printf("%s\n\n", buf
);
874 * kread reads something from the kernel, given its nlist index.
877 kread(int nlx
, void *addr
, size_t size
)
881 if (namelist
[nlx
].n_type
== 0 || namelist
[nlx
].n_value
== 0) {
882 sym
= namelist
[nlx
].n_name
;
885 errx(1, "symbol %s not defined", sym
);
887 if (kvm_read(kd
, namelist
[nlx
].n_value
, addr
, size
) != (ssize_t
)size
) {
888 sym
= namelist
[nlx
].n_name
;
891 errx(1, "%s: %s", sym
, kvm_geterr(kd
));
898 fprintf(stderr
, "%s%s",
899 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n",
900 " [-n devs] [disks]\n");