linux-kernel - Re: 2.6.24-rc7: memory leak?

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Message-ID: <20080117123532.GU3940@zip.com.au>
Date:	Thu, 17 Jan 2008 23:35:32 +1100
From:	CaT <cat@....com.au>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.24-rc7: memory leak?

On Thu, Jan 17, 2008 at 09:22:50PM +0900, KOSAKI Motohiro wrote:
> Hi
> 
> > > > 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.
> > 
> > So what would I have to do to find out the real amount of memory free?
> > Would that be the MemFree field in /proc/meminfo plus, from
> > /proc/slabinfo, *_cache and size-*?
> 
> SReclaimable field can't fill requilrement? :)

Ah. Hmm. *pokes about* That does seem to correspond pretty closely to
what happens with the echo 3 >/proc/.... Though it never seems to get to
0 (~4 meg is as close as it gets on this box) which seems to jive with
what Peter said in the other email.

Hmm. I think tomorrow I'll be writing free.pl and modifying my graphing
and monitoring stuff to take this into account somehow. :)

Thanks!

-- 
    "To the extent that we overreact, we proffer the terrorists the
    greatest tribute."
    	- High Court Judge Michael Kirby
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