428 lines
11 KiB
C
428 lines
11 KiB
C
/* $NetBSD: iostat.c,v 1.10 1996/10/25 18:21:58 scottr Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 John M. Vinopal
|
|
* 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 for the NetBSD Project
|
|
* by John M. Vinopal.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 1986, 1991, 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 copyright[] =
|
|
"@(#) Copyright (c) 1986, 1991, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)iostat.c 8.2 (Berkeley) 1/26/94";
|
|
#else
|
|
static char *rcsid = "$NetBSD: iostat.c,v 1.10 1996/10/25 18:21:58 scottr Exp $"
|
|
;
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/dkstat.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <err.h>
|
|
#include <ctype.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "dkstats.h"
|
|
|
|
/* Defined in dkstats.c */
|
|
extern struct _disk cur;
|
|
extern int dk_ndrive;
|
|
|
|
/* Namelist and memory files. */
|
|
char *nlistf, *memf;
|
|
|
|
int hz, reps, interval;
|
|
static int todo = 0;
|
|
|
|
#define ISSET(x, a) ((x) & (a))
|
|
#define SHOW_CPU 0x0001
|
|
#define SHOW_TTY 0x0002
|
|
#define SHOW_STATS_1 0x0004
|
|
#define SHOW_STATS_2 0x0008
|
|
#define SHOW_TOTALS 0x0080
|
|
|
|
static void cpustats __P((void));
|
|
static void disk_stats __P((double));
|
|
static void disk_stats2 __P((double));
|
|
static void header __P((int));
|
|
static void usage __P((void));
|
|
static void display __P((void));
|
|
static void selectdrives __P((int, char **));
|
|
|
|
void dkswap __P((void));
|
|
void dkreadstats __P((void));
|
|
int dkinit __P((int));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int ch, hdrcnt;
|
|
struct timeval tv;
|
|
|
|
while ((ch = getopt(argc, argv, "Cc:dDIM:N:Tw:")) != EOF)
|
|
switch(ch) {
|
|
case 'c':
|
|
if ((reps = atoi(optarg)) <= 0)
|
|
errx(1, "repetition count <= 0.");
|
|
break;
|
|
case 'C':
|
|
todo |= SHOW_CPU;
|
|
break;
|
|
case 'd':
|
|
todo |= SHOW_STATS_1;
|
|
break;
|
|
case 'D':
|
|
todo |= SHOW_STATS_2;
|
|
break;
|
|
case 'I':
|
|
todo |= SHOW_TOTALS;
|
|
break;
|
|
case 'M':
|
|
memf = optarg;
|
|
break;
|
|
case 'N':
|
|
nlistf = optarg;
|
|
break;
|
|
case 'T':
|
|
todo |= SHOW_TTY;
|
|
break;
|
|
case 'w':
|
|
if ((interval = atoi(optarg)) <= 0)
|
|
errx(1, "interval <= 0.");
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (!ISSET(todo, SHOW_CPU | SHOW_TTY | SHOW_STATS_1 | SHOW_STATS_2))
|
|
todo |= SHOW_CPU | SHOW_TTY | SHOW_STATS_1;
|
|
|
|
/*
|
|
* Discard setgid privileges if not the running kernel so that bad
|
|
* guys can't print interesting stuff from kernel memory.
|
|
*/
|
|
if (nlistf != NULL || memf != NULL)
|
|
setgid(getgid());
|
|
|
|
dkinit(0);
|
|
dkreadstats();
|
|
selectdrives(argc, argv);
|
|
|
|
tv.tv_sec = interval;
|
|
tv.tv_usec = 0;
|
|
|
|
/* print a new header on sigcont */
|
|
(void)signal(SIGCONT, header);
|
|
|
|
for (hdrcnt = 1;;) {
|
|
if (!--hdrcnt) {
|
|
header(0);
|
|
hdrcnt = 20;
|
|
}
|
|
|
|
if (!ISSET(todo, SHOW_TOTALS))
|
|
dkswap();
|
|
display();
|
|
|
|
if (reps >= 0 && --reps <= 0)
|
|
break;
|
|
select(0, NULL, NULL, NULL, &tv);
|
|
dkreadstats();
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
header(signo)
|
|
int signo;
|
|
{
|
|
register int i;
|
|
|
|
/* Main Headers. */
|
|
if (ISSET(todo, SHOW_TTY))
|
|
(void)printf(" tty");
|
|
|
|
if (ISSET(todo, SHOW_STATS_1))
|
|
for (i = 0; i < dk_ndrive; i++)
|
|
if (cur.dk_select[i])
|
|
(void)printf(" %3.3s ", cur.dk_name[i]);
|
|
|
|
if (ISSET(todo, SHOW_STATS_2))
|
|
for (i = 0; i < dk_ndrive; i++)
|
|
if (cur.dk_select[i])
|
|
(void)printf(" %3.3s ", cur.dk_name[i]);
|
|
|
|
if (ISSET(todo, SHOW_CPU))
|
|
(void)printf(" cpu");
|
|
printf("\n");
|
|
|
|
/* Sub-Headers. */
|
|
if (ISSET(todo, SHOW_TTY))
|
|
printf(" tin tout");
|
|
|
|
if (ISSET(todo, SHOW_STATS_1))
|
|
for (i = 0; i < dk_ndrive; i++)
|
|
if (cur.dk_select[i])
|
|
if (ISSET(todo, SHOW_TOTALS))
|
|
(void)printf(" KB/t xfr MB ");
|
|
else
|
|
(void)printf(" KB/t t/s MB/s ");
|
|
|
|
if (ISSET(todo, SHOW_STATS_2))
|
|
for (i = 0; i < dk_ndrive; i++)
|
|
if (cur.dk_select[i])
|
|
(void)printf(" KB xfr time ");
|
|
|
|
if (ISSET(todo, SHOW_CPU))
|
|
(void)printf(" us ni sy in id");
|
|
printf("\n");
|
|
}
|
|
|
|
static void
|
|
disk_stats(etime)
|
|
double etime;
|
|
{
|
|
register int dn;
|
|
double atime, mbps;
|
|
|
|
for (dn = 0; dn < dk_ndrive; ++dn) {
|
|
if (!cur.dk_select[dn])
|
|
continue;
|
|
|
|
/* average Kbytes per transfer. */
|
|
if (cur.dk_xfer[dn])
|
|
mbps = (cur.dk_bytes[dn] / (1024.0)) / cur.dk_xfer[dn];
|
|
else
|
|
mbps = 0.0;
|
|
(void)printf(" %5.2f", mbps);
|
|
|
|
/* average transfers per second. */
|
|
(void)printf(" %3.0f", cur.dk_xfer[dn] / etime);
|
|
|
|
/* time busy in disk activity */
|
|
atime = (double)cur.dk_time[dn].tv_sec +
|
|
((double)cur.dk_time[dn].tv_usec / (double)1000000);
|
|
|
|
/* Megabytes per second. */
|
|
if (atime != 0.0)
|
|
mbps = cur.dk_bytes[dn] / (double)(1024 * 1024);
|
|
else
|
|
mbps = 0;
|
|
(void)printf(" %4.2f ", mbps / etime);
|
|
}
|
|
}
|
|
|
|
static void
|
|
disk_stats2(etime)
|
|
double etime;
|
|
{
|
|
register int dn;
|
|
double atime;
|
|
|
|
for (dn = 0; dn < dk_ndrive; ++dn) {
|
|
if (!cur.dk_select[dn])
|
|
continue;
|
|
|
|
/* average kbytes per second. */
|
|
(void)printf(" %4.0f", cur.dk_bytes[dn] / (1024.0) / etime);
|
|
|
|
/* average transfers per second. */
|
|
(void)printf(" %3.0f", cur.dk_xfer[dn] / etime);
|
|
|
|
/* average time busy in disk activity. */
|
|
atime = (double)cur.dk_time[dn].tv_sec +
|
|
((double)cur.dk_time[dn].tv_usec / (double)1000000);
|
|
(void)printf(" %4.2f ", atime / etime);
|
|
}
|
|
}
|
|
|
|
static void
|
|
cpustats()
|
|
{
|
|
register int state;
|
|
double time;
|
|
|
|
time = 0;
|
|
for (state = 0; state < CPUSTATES; ++state)
|
|
time += cur.cp_time[state];
|
|
if (!time)
|
|
time = 1.0;
|
|
/* States are generally never 100% and can use %3.0f. */
|
|
for (state = 0; state < CPUSTATES; ++state)
|
|
printf("%3.0f", 100. * cur.cp_time[state] / time);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: iostat [-CdDIT] [-c count] [-M core] [-N system] [-w wait] [drives]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
display()
|
|
{
|
|
int i;
|
|
double etime;
|
|
|
|
/* Sum up the elapsed ticks. */
|
|
etime = 0.0;
|
|
for (i = 0; i < CPUSTATES; i++) {
|
|
etime += cur.cp_time[i];
|
|
}
|
|
if (etime == 0.0)
|
|
etime = 1.0;
|
|
/* Convert to seconds. */
|
|
etime /= (float)hz;
|
|
|
|
/* If we're showing totals only, then don't divide by the
|
|
* system time.
|
|
*/
|
|
if (ISSET(todo, SHOW_TOTALS))
|
|
etime = 1.0;
|
|
|
|
if (ISSET(todo, SHOW_TTY))
|
|
printf("%4.0f %4.0f", cur.tk_nin / etime, cur.tk_nout / etime);
|
|
|
|
if (ISSET(todo, SHOW_STATS_1))
|
|
disk_stats(etime);
|
|
|
|
if (ISSET(todo, SHOW_STATS_2))
|
|
disk_stats2(etime);
|
|
|
|
if (ISSET(todo, SHOW_CPU))
|
|
cpustats();
|
|
|
|
(void)printf("\n");
|
|
(void)fflush(stdout);
|
|
}
|
|
|
|
static void
|
|
selectdrives(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int i, ndrives;
|
|
|
|
/*
|
|
* Choose drives to be displayed. Priority goes to (in order) drives
|
|
* supplied as arguments and default drives. If everything isn't
|
|
* filled in and there are drives not taken care of, display the first
|
|
* few that fit.
|
|
*
|
|
* The backward compatibility #ifdefs permit the syntax:
|
|
* iostat [ drives ] [ interval [ count ] ]
|
|
*/
|
|
#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(cur.dk_name[i], *argv))
|
|
continue;
|
|
cur.dk_select[i] = 1;
|
|
++ndrives;
|
|
}
|
|
}
|
|
#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;
|
|
|
|
/* Pick up to 4 drives if none specified. */
|
|
if (ndrives == 0)
|
|
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
|
|
if (cur.dk_select[i])
|
|
continue;
|
|
cur.dk_select[i] = 1;
|
|
++ndrives;
|
|
}
|
|
}
|