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Revive the -f option: report fork statistics.

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This commit is contained in:
thorpej 1998-01-04 03:59:04 +00:00
parent 341b8e9b49
commit faa8ffb044
2 changed files with 14 additions and 28 deletions
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9
usr.bin/vmstat/vmstat.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: vmstat.8,v 1.12 1996/05/10 23:19:30 thorpej Exp $
.\" $NetBSD: vmstat.8,v 1.13 1998/01/04 03:59:04 thorpej Exp $
.\"
.\" Copyright (c) 1986, 1993
.\" The Regents of the University of California. All rights reserved.
@ -63,12 +63,7 @@ If no
interval is specified, the default is 1 second.
.TP
\-f
Report on the number
.IR fork (2)
and
.IR vfork (2)
system calls since system startup, and the number of pages of virtual memory
involved in each.
Report fork statistics.
.TP
\-i
Report on the number of interrupts taken by each device since system

33
usr.bin/vmstat/vmstat.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: vmstat.c,v 1.39 1997/11/01 06:51:49 lukem Exp $ */
/* $NetBSD: vmstat.c,v 1.40 1998/01/04 03:59:05 thorpej Exp $ */
/*
* Copyright (c) 1980, 1986, 1991, 1993
@ -43,7 +43,7 @@ __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
#if 0
static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 3/1/95";
#else
__RCSID("$NetBSD: vmstat.c,v 1.39 1997/11/01 06:51:49 lukem Exp $");
__RCSID("$NetBSD: vmstat.c,v 1.40 1998/01/04 03:59:05 thorpej Exp $");
#endif
#endif /* not lint */
@ -105,15 +105,13 @@ struct nlist namelist[] = {
#ifdef notdef
#define X_DEFICIT 13
{ "_deficit" },
#define X_FORKSTAT 14
{ "_forkstat" },
#define X_REC 15
#define X_REC 14
{ "_rectime" },
#define X_PGIN 16
#define X_PGIN 15
{ "_pgintime" },
#define X_XSTATS 17
#define X_XSTATS 16
{ "_xstats" },
#define X_END 18
#define X_END 17
#else
#define X_END 13
#endif
@ -163,9 +161,9 @@ long getuptime __P((void));
void printhdr __P((void));
long pct __P((long, long));
void usage __P((void));
void doforkst __P((void));
#ifdef notdef
void dotimes __P((void));
void doforkst __P((void));
#endif
int main __P((int, char **));
@ -197,11 +195,9 @@ main(argc, argv)
case 'c':
reps = atoi(optarg);
break;
#ifndef notdef
case 'f':
todo |= FORKSTAT;
break;
#endif
case 'i':
todo |= INTRSTAT;
break;
@ -293,10 +289,8 @@ main(argc, argv)
} else if (reps)
interval = 1;
#ifdef notdef
if (todo & FORKSTAT)
doforkst();
#endif
if (todo & MEMSTAT)
domem();
if (todo & SUMSTAT)
@ -640,19 +634,16 @@ dosum()
#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);
kread(X_SUM, &sum, sizeof(sum));
(void)printf("%u forks total\n", sum.v_forks);
(void)printf("%u forks blocked parent\n", sum.v_forks_ppwait);
(void)printf("%u forks shared address space with parent\n",
sum.v_forks_sharevm);
}
#endif
void
dkstats()