Date: Tue, 16 Jan 2001 05:19:21 +0900 (JST) From: Hajimu UMEMOTO <ume@FreeBSD.org> To: pherman@frenchfries.net Cc: current@FreeBSD.ORG Subject: Re: number of processes forked since boot Message-ID: <20010116.051921.41625345.ume@FreeBSD.org> In-Reply-To: <Pine.BSF.4.31.0101152058170.11142-100000@husten.security.at12.de> References: <20010116.043828.97301753.ume@FreeBSD.org> <Pine.BSF.4.31.0101152058170.11142-100000@husten.security.at12.de>
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>>>>> On Mon, 15 Jan 2001 21:07:08 +0100 (CET)
>>>>> Paul Herman <pherman@frenchfries.net> said:
pherman> Yes, that's my read from the source. What I also like about it is
pherman> that it counts [vr]forks to boot, plus vmpages affected by the fork.
pherman> After I first saw this in OBSD I was really motivated to do just what
pherman> you've done for FreeBSD, but never got around to it.
I just moved nforks into vm_meter.c Here is a patch:
Index: sys/kern/kern_fork.c
diff -u sys/kern/kern_fork.c.orig sys/kern/kern_fork.c
--- sys/kern/kern_fork.c.orig Fri Jan 12 02:46:53 2001
+++ sys/kern/kern_fork.c Tue Jan 16 04:53:18 2001
@@ -145,6 +145,7 @@
int nprocs = 1; /* process 0 */
static int nextpid = 0;
+extern unsigned int nforks;
/*
* Random component to nextpid generation. We mix in a random factor to make
@@ -277,6 +278,8 @@
}
newproc->p_vmspace = NULL;
+
+ nforks++;
/*
* Find an unused process ID. We remember a range of unused IDs
Index: sys/vm/vm_meter.c
diff -u sys/vm/vm_meter.c.orig sys/vm/vm_meter.c
--- sys/vm/vm_meter.c.orig Fri Jan 12 02:48:48 2001
+++ sys/vm/vm_meter.c Tue Jan 16 04:51:49 2001
@@ -126,6 +126,10 @@
SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
CTLFLAG_RW, &cnt.v_free_severe, 0, "");
+unsigned int nforks = 0;
+SYSCTL_UINT(_vm, OID_AUTO, nforks, CTLFLAG_RD, &nforks, 0,
+ "number of fork()s since boot");
+
SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
&averunnable, loadavg, "Machine loadaverage history");
pherman> If you like, I'll see if I can't come up with something
pherman> similar. Shouldn't be too hard. I'll try that tonight.
Please do it.
pherman> The hardest part would be finding a spot on the systat(1) display to
pherman> put it. :-)
Exactly.
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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