4.4BSD/usr/src/usr.bin/vmstat.sparc/vmstat.c
/*
* Copyright (c) 1992, 1993
* 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
static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/param.h>
#include <sys/device.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/time.h>
#include <sys/dkstat.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#include <vm/vm.h>
#include <errno.h>
#include <kvm.h>
#include <limits.h>
#include <nlist.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "extern.h"
int hz, hdrcnt, winlines;
struct {
long old[CPUSTATES]; /* previous cp_time from kernel */
long delta[CPUSTATES]; /* delta between current & prev */
long total; /* sum of deltas */
} cputime;
void cpustats __P((void));
void dkstats __P((void));
void getcputime __P(());
int getwinsize __P((void));
void needhdr __P((int));
void printhdr __P((void));
static struct nlist nl[] = {
{ "_cnt" },
#define X_CNT 0
{ "_cp_time" },
#define X_CPTIME 1
0
};
void
dovmstat(interval, reps)
u_int interval;
int reps;
{
int mib[2], size;
time_t uptime, halfuptime;
struct clockinfo ci;
struct vmtotal total;
struct vmmeter cnt, ocnt;
knlist(nl);
winlines = getwinsize();
uptime = getuptime();
halfuptime = uptime / 2;
(void)signal(SIGCONT, needhdr);
size = sizeof(ci);
mib[0] = CTL_KERN;
mib[1] = KERN_CLOCKRATE;
if (sysctl(mib, 2, &ci, &size, NULL, 0) < 0)
errexit("sysctl(KERN_CLOCKRATE): %s\n", strerror(errno));
hz = ci.stathz ? ci.stathz : ci.hz;
for (hdrcnt = 1;;) {
if (--hdrcnt == 0)
printhdr();
kread(nl[X_CNT].n_value, &cnt, sizeof cnt, "cnt");
getcputime();
size = sizeof(total);
mib[0] = CTL_VM;
mib[1] = VM_METER;
if (sysctl(mib, 2, &total, &size, NULL, 0) < 0)
errexit("sysctl(VM_METER): %s\n", strerror(errno));
(void)printf("%2d%2d%2d",
total.t_rq, total.t_dw + total.t_pw, total.t_sw);
#define pgtok(a) ((a) * cnt.v_page_size >> 10)
#define rate(x) (((x) + halfuptime) / uptime) /* round */
(void)printf("%6ld%6ld ",
pgtok(total.t_avm), pgtok(total.t_free));
(void)printf("%4lu ", rate(cnt.v_faults - ocnt.v_faults));
(void)printf("%3lu ",
rate(cnt.v_reactivated - ocnt.v_reactivated));
(void)printf("%3lu ", rate(cnt.v_pageins - ocnt.v_pageins));
(void)printf("%3lu %3lu ",
rate(cnt.v_pageouts - ocnt.v_pageouts), 0);
(void)printf("%3lu ", rate(cnt.v_scan - ocnt.v_scan));
dkstats();
(void)printf("%4lu %4lu %3lu ",
rate(cnt.v_intr - ocnt.v_intr),
rate(cnt.v_syscall - ocnt.v_syscall),
rate(cnt.v_swtch - ocnt.v_swtch));
cpustats();
(void)printf("\n");
(void)fflush(stdout);
if (reps >= 0 && --reps <= 0)
break;
ocnt = cnt;
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);
}
}
int
getwinsize()
{
struct winsize winsize;
winsize.ws_row = 0;
(void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize);
return (winsize.ws_row > 0 ? winsize.ws_row : 20);
}
/*
* Get cpu times for dkstats and cpustats().
*/
void
getcputime()
{
register int state;
long t, sum, cp_time[CPUSTATES];
kread(nl[X_CPTIME].n_value, cp_time, sizeof cp_time, "cp_time");
for (sum = 0, state = 0; state < CPUSTATES; ++state) {
t = cp_time[state] - cputime.old[state];
cputime.old[state] = cp_time[state];
cputime.delta[state] = t;
sum += t;
}
cputime.total = sum;
}
/*
* Print disk statistics for dovmstat().
*/
void
dkstats()
{
register struct dkinfo *dk;
double etime;
#ifdef notyet
long xfer;
for (dk = dkinfo; dk != NULL; dk = dk->dk_next) {
kread(addr + offsetof(struct dkdevice, dk_xfer),
&xfer, sizeof xfer, dk->dk_name);
dk->dk_dxfer = xfer - dk->dk_oxfer;
dk->dk_oxfer = xfer;
}
#endif
etime = (cputime.total ? (double)cputime.total : 1.0) / hz;
for (dk = dkinfo; dk != NULL; dk = dk->dk_next)
if (dk->dk_sel)
(void)printf("%2.0f ", dk->dk_dxfer / etime);
}
/*
* Print cpu statistics for dovmstat().
*/
void
cpustats()
{
double pct;
if (cputime.total)
pct = 100.0 / cputime.total;
else
pct = 0.0;
(void)printf("%2.0f %2.0f %2.0f",
(cputime.delta[CP_USER] + cputime.delta[CP_NICE]) * pct,
(cputime.delta[CP_SYS] + cputime.delta[CP_INTR]) * pct,
cputime.delta[CP_IDLE] * pct);
}
void
printhdr()
{
register struct dkinfo *dk;
(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, "");
(void)printf(" r b w avm fre flt re pi po fr sr ");
for (dk = dkinfo; dk != NULL; dk = dk->dk_next)
if (dk->dk_sel)
(void)printf("%s ", dk->dk_2c);
(void)printf(" in sy cs us sy id\n");
hdrcnt = winlines - 2;
}
/*
* Force a header to be prepended to the next output.
*/
void
needhdr(sig)
int sig;
{
hdrcnt = 1;
}