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Message-Id: <1200571632.28661.13.camel@twins>
Date: Thu, 17 Jan 2008 13:07:12 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: CaT <cat@....com.au>
Cc: linux-kernel@...r.kernel.org
Subject: Re: 2.6.24-rc7: memory leak?
On Thu, 2008-01-17 at 22:40 +1100, CaT wrote:
> On Thu, Jan 17, 2008 at 12:22:03PM +0100, Peter Zijlstra wrote:
> > On Thu, 2008-01-17 at 17:34 +1100, CaT wrote:
> > > cache). During the rsync the memory used grew to just shy of 1.6gig and
> > > now, about 2 hours after the rsync has well and truly finished, the used
> > > memory is at 1.23gig. This is what free reports:
> > >
> > > total used free shared buffers cached
> > > Mem: 2058128 1994468 63660 0 688604 11432
> > > -/+ buffers/cache: 1294432 763696
> > > Swap: 1048568 0 1048568
> >
> > How much memory does:
> >
> > echo 3 > /proc/sys/vm/drop_caches
> >
> > gain you?
>
> 56M used now.
Good :-)
> Should all this cache usage not be counted towards the
> 'Cached' entry in meminfo rather then getting counted as part of used
> ram.
Cached is only the page-cache, not all the other caches we have..
This someones confuses people, but one gets used to it. slabinfo allows
one to easily view others.
> I assume that this would not cause an oom situation and would be
> freed up if all that memory really did need to be used.
Correct.
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