From: Christoph Rohland <cr@sap.com>
To: Craig Schlenter <craig@qualica.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: strange swap behaviour - test11pre4
Date: 03 Jan 2001 20:49:25 +0100 [thread overview]
Message-ID: <m3ofxo35tz.fsf@linux.local> (raw)
In-Reply-To: <20010103123230.C23323@qualica.com> <20010103160802.A8544@qualica.com>
In-Reply-To: <20010103160802.A8544@qualica.com>
Craig Schlenter <craig@qualica.com> writes:
> [snip, vmstat stuff, me]
> > There is a perl program running (80 Meg's in size, 20 Megs
> > resident) that is chatting to a database and building up a large
> > hash in memory. The machine has 64M of RAM. The bit that doesn't
> > make sense is why the cache is so large - the VM seems to have got
> > stuck paging in stuff from swap repeatedly (bits of the perl
> > program it would seem). Surely it should shrink the cache to
> > provide more breathing room or am I being an idiot about this?
>
> $idiot++;
You probably got fooled by the new vm: All shm pages are now in the
page cache and thus appear as 'cached'. But they cannot be shrinked
away...
So I would vote for $idiot--; ;-)
Greetings
Christoph
P.S: I expect this to become an FAQ
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prev parent reply other threads:[~2001-01-03 20:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-03 10:32 strange swap behaviour - test11pre4 Craig Schlenter
2001-01-03 14:08 ` Craig Schlenter
2001-01-03 19:49 ` Christoph Rohland [this message]
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