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[unix-history] / usr.bin / vmstat / vmstat.c
/*
* Copyright (c) 1980, 1986, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1986, 1991 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)vmstat.c 5.31 (Berkeley) 7/2/91";
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/dkstat.h>
#include <sys/buf.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/signal.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/vm_statistics.h>
#include <time.h>
#include <nlist.h>
#include <kvm.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#define NEWVM /* XXX till old has been updated or purged */
struct nlist nl[] = {
#define X_CPTIME 0
{ "_cp_time" },
#define X_TOTAL 1
{ "_total" },
#define X_SUM 2
{ "_cnt" }, /* XXX for now that's where it is */
#define X_BOOTTIME 3
{ "_boottime" },
#define X_DKXFER 4
{ "_dk_xfer" },
#define X_HZ 5
{ "_hz" },
#define X_PHZ 6
{ "_phz" },
#define X_NCHSTATS 7
{ "_nchstats" },
#define X_INTRNAMES 8
{ "_intrnames" },
#define X_EINTRNAMES 9
{ "_eintrnames" },
#define X_INTRCNT 10
{ "_intrcnt" },
#define X_EINTRCNT 11
{ "_eintrcnt" },
#define X_DK_NDRIVE 12
{ "_dk_ndrive" },
#define X_KMEMSTAT 13
{ "_kmemstats" },
#define X_KMEMBUCKETS 14
{ "_bucket" },
#define X_VMSTAT 15
{ "_vm_stat" },
#ifdef notdef
#define X_DEFICIT 15
{ "_deficit" },
#define X_FORKSTAT 16
{ "_forkstat" },
#define X_REC 17
{ "_rectime" },
#define X_PGIN 18
{ "_pgintime" },
#define X_XSTATS 19
{ "_xstats" },
#define X_END 19
#else
#define X_END 15
#endif
#ifdef hp300
#define X_HPDINIT (X_END+1)
{ "_hp_dinit" },
#endif
#ifdef tahoe
#define X_VBDINIT (X_END+1)
{ "_vbdinit" },
#define X_CKEYSTATS (X_END+2)
{ "_ckeystats" },
#define X_DKEYSTATS (X_END+3)
{ "_dkeystats" },
#endif
#ifdef vax
#define X_MBDINIT (X_END+1)
{ "_mbdinit" },
#define X_UBDINIT (X_END+2)
{ "_ubdinit" },
#endif
#ifdef __386BSD__
#define X_FREE (X_END+1)
{ "_vm_page_free_count" },
#define X_ACTIVE (X_END+2)
{ "_vm_page_active_count" },
#define X_INACTIVE (X_END+3)
{ "_vm_page_inactive_count" },
#define X_WIRED (X_END+4)
{ "_vm_page_wire_count" },
#define X_PAGESIZE (X_END+5)
{ "_page_size" },
#define X_ISA_BIO (X_END+6)
{ "_isa_devtab_bio" },
#endif /* __386BSD__ */
{ "" },
};
struct _disk {
long time[CPUSTATES];
long *xfer;
} cur, last;
struct vm_statistics vm_stat, ostat;
struct vmmeter sum, osum;
char *vmunix = _PATH_UNIX;
char **dr_name;
int *dr_select, dk_ndrive, ndrives;
#ifdef __386BSD__
/* to make up for statistics that don't get updated */
int size, free_count, active_count, inactive, wired;
#endif
int winlines = 20;
#define FORKSTAT 0x01
#define INTRSTAT 0x02
#define MEMSTAT 0x04
#define SUMSTAT 0x08
#define TIMESTAT 0x10
#define VMSTAT 0x20
#include "names.c" /* disk names -- machine dependent */
void cpustats(), dkstats(), dointr(), domem(), dosum();
void dovmstat(), kread(), usage();
#ifdef notdef
void dotimes(), doforkst();
#endif
main(argc, argv)
register int argc;
register char **argv;
{
extern int optind;
extern char *optarg;
register int c, todo;
u_int interval;
int reps;
char *kmem;
kmem = NULL;
interval = reps = todo = 0;
while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) {
switch (c) {
case 'c':
reps = atoi(optarg);
break;
#ifndef notdef
case 'f':
todo |= FORKSTAT;
break;
#endif
case 'i':
todo |= INTRSTAT;
break;
case 'M':
kmem = optarg;
break;
case 'm':
todo |= MEMSTAT;
break;
case 'N':
vmunix = optarg;
break;
case 's':
todo |= SUMSTAT;
break;
#ifndef notdef
case 't':
todo |= TIMESTAT;
break;
#endif
case 'w':
interval = atoi(optarg);
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (todo == 0)
todo = VMSTAT;
if (kvm_openfiles(vmunix, kmem, NULL) < 0) {
(void)fprintf(stderr,
"vmstat: kvm_openfiles: %s\n", kvm_geterr());
exit(1);
}
if ((c = kvm_nlist(nl)) != 0) {
if (c > 0) {
(void)fprintf(stderr,
"vmstat: undefined symbols in %s:", vmunix);
for (c = 0; c < sizeof(nl)/sizeof(nl[0]); c++)
if (nl[c].n_type == 0)
fprintf(stderr, " %s", nl[c].n_name);
(void)fputc('\n', stderr);
} else
(void)fprintf(stderr, "vmstat: kvm_nlist: %s\n",
kvm_geterr());
exit(1);
}
if (todo & VMSTAT) {
char **getdrivedata();
struct winsize winsize;
argv = getdrivedata(argv);
winsize.ws_row = 0;
(void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize);
if (winsize.ws_row > 0)
winlines = winsize.ws_row;
}
#define BACKWARD_COMPATIBILITY
#ifdef BACKWARD_COMPATIBILITY
if (*argv) {
interval = atoi(*argv);
if (*++argv)
reps = atoi(*argv);
}
#endif
if (interval) {
if (!reps)
reps = -1;
} else if (reps)
interval = 1;
#ifdef notdef
if (todo & FORKSTAT)
doforkst();
#endif
if (todo & MEMSTAT)
domem();
if (todo & SUMSTAT)
dosum();
#ifdef notdef
if (todo & TIMESTAT)
dotimes();
#endif
if (todo & INTRSTAT)
dointr();
if (todo & VMSTAT)
dovmstat(interval, reps);
exit(0);
}
char **
getdrivedata(argv)
char **argv;
{
register int i;
register char **cp;
char buf[30];
kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive));
if (dk_ndrive <= 0) {
(void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive);
exit(1);
}
dr_select = calloc((size_t)dk_ndrive, sizeof(int));
dr_name = calloc((size_t)dk_ndrive, sizeof(char *));
for (i = 0; i < dk_ndrive; i++)
dr_name[i] = NULL;
cur.xfer = calloc((size_t)dk_ndrive, sizeof(long));
last.xfer = calloc((size_t)dk_ndrive, sizeof(long));
read_names();
for (i = 0; i < dk_ndrive; i++)
if (dr_name[i] == NULL) {
(void)sprintf(buf, "??%d", i);
dr_name[i] = strdup(buf);
}
/*
* Choose drives to be displayed. Priority goes to (in order) drives
* supplied as arguments, default drives. If everything isn't filled
* in and there are drives not taken care of, display the first few
* that fit.
*/
#define BACKWARD_COMPATIBILITY
for (ndrives = 0; *argv; ++argv) {
#ifdef BACKWARD_COMPATIBILITY
if (isdigit(**argv))
break;
#endif
for (i = 0; i < dk_ndrive; i++) {
if (strcmp(dr_name[i], *argv))
continue;
dr_select[i] = 1;
++ndrives;
break;
}
}
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
if (dr_select[i])
continue;
for (cp = defdrives; *cp; cp++)
if (strcmp(dr_name[i], *cp) == 0) {
dr_select[i] = 1;
++ndrives;
break;
}
}
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
if (dr_select[i])
continue;
dr_select[i] = 1;
++ndrives;
}
return(argv);
}
#ifdef __386BSD__
/*
* Make up for the fact that under 0.1, VM doesn't update all of the
* fields in the statistics structures.
*/
void
fill_in_vm_stat(vm_stat)
struct vm_statistics *vm_stat;
{
kread(X_FREE, &vm_stat->free_count, sizeof(vm_stat->free_count));
kread(X_ACTIVE, &vm_stat->active_count, sizeof(vm_stat->active_count));
kread(X_INACTIVE, &vm_stat->inactive_count,
sizeof(vm_stat->inactive_count));
kread(X_WIRED, &vm_stat->wire_count, sizeof(vm_stat->wire_count));
kread(X_PAGESIZE, &vm_stat->pagesize, sizeof(vm_stat->pagesize));
}
#endif
long
getuptime()
{
static time_t now, boottime;
time_t uptime;
if (boottime == 0)
kread(X_BOOTTIME, &boottime, sizeof(boottime));
(void)time(&now);
uptime = now - boottime;
if (uptime <= 0 || uptime > 60*60*24*365*10) {
(void)fprintf(stderr,
"vmstat: time makes no sense; namelist must be wrong.\n");
exit(1);
}
return(uptime);
}
int hz, hdrcnt;
void
dovmstat(interval, reps)
u_int interval;
int reps;
{
struct vmtotal total;
time_t uptime, halfuptime;
void needhdr();
#ifndef notdef
int deficit;
#endif
uptime = getuptime();
halfuptime = uptime / 2;
(void)signal(SIGCONT, needhdr);
if (nl[X_PHZ].n_type != 0 && nl[X_PHZ].n_value != 0)
kread(X_PHZ, &hz, sizeof(hz));
if (!hz)
kread(X_HZ, &hz, sizeof(hz));
for (hdrcnt = 1;;) {
if (!--hdrcnt)
printhdr();
kread(X_CPTIME, cur.time, sizeof(cur.time));
kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive);
kread(X_SUM, &sum, sizeof(sum));
kread(X_TOTAL, &total, sizeof(total));
kread(X_VMSTAT, &vm_stat, sizeof(vm_stat));
#ifdef __386BSD__
fill_in_vm_stat (&vm_stat);
#endif
#ifdef notdef
kread(X_DEFICIT, &deficit, sizeof(deficit));
#endif
(void)printf("%2d %1d %1d ",
total.t_rq, total.t_dw + total.t_pw, total.t_sw);
#define pgtok(a) ((a)*NBPG >> 10)
#define rate(x) (((x) + halfuptime) / uptime) /* round */
(void)printf("%5ld %5ld ",
#ifdef __386BSD__
pgtok(vm_stat.active_count), pgtok(vm_stat.free_count));
#else
pgtok(total.t_avm), pgtok(total.t_free));
#endif
#ifdef NEWVM
(void)printf("%4lu ", rate(vm_stat.faults - ostat.faults));
(void)printf("%3lu ",
rate(vm_stat.reactivations - ostat.reactivations));
(void)printf("%3lu ", rate(vm_stat.pageins - ostat.pageins));
(void)printf("%3lu %3lu ",
rate(vm_stat.pageouts - ostat.pageouts), 0);
#else
(void)printf("%3lu %2lu ",
rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) -
(osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))),
rate(sum.v_xsfrec + sum.v_xifrec -
osum.v_xsfrec - osum.v_xifrec));
(void)printf("%3lu ",
rate(pgtok(sum.v_pgpgin - osum.v_pgpgin)));
(void)printf("%3lu %3lu ",
rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)),
rate(pgtok(sum.v_dfree - osum.v_dfree)));
(void)printf("%3d ", pgtok(deficit));
#endif
(void)printf("%3lu ", rate(sum.v_scan - osum.v_scan));
dkstats();
(void)printf("%4lu %4lu %3lu ",
rate(sum.v_intr - osum.v_intr),
rate(sum.v_syscall - osum.v_syscall),
rate(sum.v_swtch - osum.v_swtch));
cpustats();
(void)printf("\n");
(void)fflush(stdout);
if (reps >= 0 && --reps <= 0)
break;
osum = sum;
ostat = vm_stat;
uptime = interval;
/*
* We round upward to avoid losing low-frequency events
* (i.e., >= 1 per interval but < 1 per second).
*/
halfuptime = (uptime + 1) / 2;
(void)sleep(interval);
}
}
printhdr()
{
register int i;
(void)printf(" procs memory page%*s", 20, "");
if (ndrives > 1)
(void)printf("disks %*s faults cpu\n",
ndrives * 3 - 6, "");
else
(void)printf("%*s faults cpu\n", ndrives * 3, "");
#ifndef NEWVM
(void)printf(" r b w avm fre re at pi po fr de sr ");
#else
(void)printf(" r b w avm fre flt re pi po fr sr ");
#endif
for (i = 0; i < dk_ndrive; i++)
if (dr_select[i])
(void)printf("%c%c ", dr_name[i][0],
dr_name[i][strlen(dr_name[i]) - 1]);
(void)printf(" in sy cs us sy id\n");
hdrcnt = winlines - 2;
}
/*
* Force a header to be prepended to the next output.
*/
void
needhdr()
{
hdrcnt = 1;
}
#ifdef notdef
void
dotimes()
{
u_int pgintime, rectime;
kread(X_REC, &rectime, sizeof(rectime));
kread(X_PGIN, &pgintime, sizeof(pgintime));
kread(X_SUM, &sum, sizeof(sum));
(void)printf("%u reclaims, %u total time (usec)\n",
sum.v_pgrec, rectime);
(void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec);
(void)printf("\n");
(void)printf("%u page ins, %u total time (msec)\n",
sum.v_pgin, pgintime / 10);
(void)printf("average: %8.1f msec / page in\n",
pgintime / (sum.v_pgin * 10.0));
}
#endif
pct(top, bot)
long top, bot;
{
if (bot == 0)
return(0);
return((top * 100) / bot);
}
#define PCT(top, bot) pct((long)(top), (long)(bot))
#if defined(tahoe)
#include <machine/cpu.h>
#endif
void
dosum()
{
struct nchstats nchstats;
#ifndef NEWVM
struct xstats xstats;
#endif
long nchtotal;
#if defined(tahoe)
struct keystats keystats;
#endif
kread(X_SUM, &sum, sizeof(sum));
#ifdef NEWVM
kread(X_VMSTAT, &vm_stat, sizeof(vm_stat));
#ifdef __386BSD__
fill_in_vm_stat(&vm_stat);
#endif
#else
(void)printf("%9u swap ins\n", sum.v_swpin);
(void)printf("%9u swap outs\n", sum.v_swpout);
(void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE);
(void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE);
(void)printf("%9u total address trans. faults taken\n", sum.v_faults);
(void)printf("%9u page ins\n", sum.v_pgin);
(void)printf("%9u page outs\n", sum.v_pgout);
(void)printf("%9u pages paged in\n", sum.v_pgpgin);
(void)printf("%9u pages paged out\n", sum.v_pgpgout);
(void)printf("%9u sequential process pages freed\n", sum.v_seqfree);
(void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec,
PCT(sum.v_fastpgrec, sum.v_pgrec));
(void)printf("%9u reclaims from free list\n", sum.v_pgfrec);
(void)printf("%9u intransit blocking page faults\n", sum.v_intrans);
(void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE);
(void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE);
(void)printf("%9u executable fill pages created\n",
sum.v_nexfod / CLSIZE);
(void)printf("%9u executable fill page faults\n",
sum.v_exfod / CLSIZE);
(void)printf("%9u swap text pages found in free list\n",
sum.v_xsfrec);
(void)printf("%9u inode text pages found in free list\n",
sum.v_xifrec);
(void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE);
(void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE);
(void)printf("%9u pages examined by the clock daemon\n", sum.v_scan);
(void)printf("%9u revolutions of the clock hand\n", sum.v_rev);
(void)printf("%9u pages freed by the clock daemon\n",
sum.v_dfree / CLSIZE);
#endif
(void)printf("%9u cpu context switches\n", sum.v_swtch);
(void)printf("%9u device interrupts\n", sum.v_intr);
(void)printf("%9u software interrupts\n", sum.v_soft);
#ifdef vax
(void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma);
#endif
(void)printf("%9u traps\n", sum.v_trap);
(void)printf("%9u system calls\n", sum.v_syscall);
#ifdef NEWVM
(void)printf("%9u bytes per page\n", vm_stat.pagesize);
(void)printf("%9u pages free\n", vm_stat.free_count);
(void)printf("%9u pages active\n", vm_stat.active_count);
(void)printf("%9u pages inactive\n", vm_stat.inactive_count);
(void)printf("%9u pages wired down\n", vm_stat.wire_count);
(void)printf("%9u zero-fill pages\n", vm_stat.zero_fill_count);
(void)printf("%9u pages reactivated\n", vm_stat.reactivations);
(void)printf("%9u pageins\n", vm_stat.pageins);
(void)printf("%9u pageouts\n", vm_stat.pageouts);
(void)printf("%9u VM faults\n", vm_stat.faults);
(void)printf("%9u copy-on-write faults\n", vm_stat.cow_faults);
(void)printf("%9u VM object cache lookups\n", vm_stat.lookups);
(void)printf("%9u VM object hits\n", vm_stat.hits);
#endif
kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
nchstats.ncs_badhits + nchstats.ncs_falsehits +
nchstats.ncs_miss + nchstats.ncs_long;
(void)printf("%9ld total name lookups\n", nchtotal);
(void)printf(
"%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n",
"", PCT(nchstats.ncs_goodhits, nchtotal),
PCT(nchstats.ncs_neghits, nchtotal),
PCT(nchstats.ncs_pass2, nchtotal));
(void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
PCT(nchstats.ncs_badhits, nchtotal),
PCT(nchstats.ncs_falsehits, nchtotal),
PCT(nchstats.ncs_long, nchtotal));
#ifndef NEWVM
kread(X_XSTATS, &xstats, sizeof(xstats));
(void)printf("%9lu total calls to xalloc (cache hits %d%%)\n",
xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc));
(void)printf("%9s sticky %lu flushed %lu unused %lu\n", "",
xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused);
(void)printf("%9lu total calls to xfree", xstats.free);
(void)printf(" (sticky %lu cached %lu swapped %lu)\n",
xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap);
#endif
#if defined(tahoe)
kread(X_CKEYSTATS, &keystats, sizeof(keystats));
(void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n",
keystats.ks_allocs, "code cache keys allocated",
PCT(keystats.ks_allocfree, keystats.ks_allocs),
PCT(keystats.ks_norefs, keystats.ks_allocs),
PCT(keystats.ks_taken, keystats.ks_allocs),
PCT(keystats.ks_shared, keystats.ks_allocs));
kread(X_DKEYSTATS, &keystats, sizeof(keystats));
(void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n",
keystats.ks_allocs, "data cache keys allocated",
PCT(keystats.ks_allocfree, keystats.ks_allocs),
PCT(keystats.ks_norefs, keystats.ks_allocs),
PCT(keystats.ks_taken, keystats.ks_allocs),
PCT(keystats.ks_shared, keystats.ks_allocs));
#endif
}
#ifdef notdef
void
doforkst()
{
struct forkstat fks;
kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
(void)printf("%d forks, %d pages, average %.2f\n",
fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
(void)printf("%d vforks, %d pages, average %.2f\n",
fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork);
}
#endif
void
dkstats()
{
register int dn, state;
double etime;
long tmp;
for (dn = 0; dn < dk_ndrive; ++dn) {
tmp = cur.xfer[dn];
cur.xfer[dn] -= last.xfer[dn];
last.xfer[dn] = tmp;
}
etime = 0;
for (state = 0; state < CPUSTATES; ++state) {
tmp = cur.time[state];
cur.time[state] -= last.time[state];
last.time[state] = tmp;
etime += cur.time[state];
}
if (etime == 0)
etime = 1;
etime /= hz;
for (dn = 0; dn < dk_ndrive; ++dn) {
if (!dr_select[dn])
continue;
(void)printf("%2.0f ", cur.xfer[dn] / etime);
}
}
void
cpustats()
{
register int state;
double pct, total;
total = 0;
for (state = 0; state < CPUSTATES; ++state)
total += cur.time[state];
if (total)
pct = 100 / total;
else
pct = 0;
(void)printf("%2.0f ", /* user + nice */
(cur.time[0] + cur.time[1]) * pct);
(void)printf("%2.0f ", cur.time[2] * pct); /* system */
(void)printf("%2.0f", cur.time[3] * pct); /* idle */
}
void
dointr()
{
register unsigned long *intrcnt, inttotal, uptime;
register int nintr, inamlen;
register char *intrname;
uptime = getuptime();
nintr = nl[X_EINTRCNT].n_value - nl[X_INTRCNT].n_value;
inamlen = nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value;
intrcnt = malloc((size_t)nintr);
intrname = malloc((size_t)inamlen);
if (intrcnt == NULL || intrname == NULL) {
(void)fprintf(stderr, "vmstat: %s.\n", strerror(errno));
exit(1);
}
kread(X_INTRCNT, intrcnt, (size_t)nintr);
kread(X_INTRNAMES, intrname, (size_t)inamlen);
(void)printf("%-12s %10s %8s\n", "interrupt", "count", "rate");
inttotal = 0;
nintr /= sizeof(long);
while (--nintr >= 0) {
if (*intrcnt)
(void)printf("%-12s %10lu %8lu\n", intrname,
*intrcnt, *intrcnt / uptime);
intrname += strlen(intrname) + 1;
inttotal += *intrcnt++;
}
(void)printf("%-12s %10lu %8lu\n", "Total", inttotal, inttotal / uptime);
}
/*
* These names are defined in <sys/malloc.h>.
*/
char *kmemnames[] = INITKMEMNAMES;
void
domem()
{
register struct kmembuckets *kp;
register struct kmemstats *ks;
register int i;
int size;
long totuse = 0, totfree = 0, totreq = 0;
struct kmemstats kmemstats[M_LAST];
struct kmembuckets buckets[MINBUCKET + 16];
kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
(void)printf("Memory statistics by bucket size\n");
(void)printf(
" Size In Use Free Requests HighWater Couldfree\n");
for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) {
if (kp->kb_calls == 0)
continue;
size = 1 << i;
(void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size,
kp->kb_total - kp->kb_totalfree,
kp->kb_totalfree, kp->kb_calls,
kp->kb_highwat, kp->kb_couldfree);
totfree += size * kp->kb_totalfree;
}
kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
(void)printf("\nMemory statistics by type\n");
(void)printf(
" Type In Use MemUse HighUse Limit Requests TypeLimit KernLimit\n");
for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
if (ks->ks_calls == 0)
continue;
(void)printf("%12s %7ld %7ldK %8ldK %5ldK %8ld %6u %9u\n",
kmemnames[i] ? kmemnames[i] : "undefined",
ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
(ks->ks_maxused + 1023) / 1024,
(ks->ks_limit + 1023) / 1024, ks->ks_calls,
ks->ks_limblocks, ks->ks_mapblocks);
totuse += ks->ks_memuse;
totreq += ks->ks_calls;
}
(void)printf("\nMemory Totals: In Use Free Requests\n");
(void)printf(" %7ldK %6ldK %8ld\n",
(totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
}
/*
* kread reads something from the kernel, given its nlist index.
*/
void
kread(nlx, addr, size)
int nlx;
void *addr;
size_t size;
{
char *sym;
if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) {
sym = nl[nlx].n_name;
if (*sym == '_')
++sym;
(void)fprintf(stderr,
"vmstat: %s: symbol %s not defined\n", vmunix, sym);
exit(1);
}
if (kvm_read((void *)nl[nlx].n_value, addr, size) != size) {
sym = nl[nlx].n_name;
if (*sym == '_')
++sym;
(void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr());
exit(1);
}
}
void
usage()
{
(void)fprintf(stderr,
#ifndef NEWVM
"usage: vmstat [-fimst] [-c count] [-M core] \
[-N system] [-w wait] [disks]\n");
#else
"usage: vmstat [-ims] [-c count] [-M core] \
[-N system] [-w wait] [disks]\n");
#endif
exit(1);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.