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From: Marc-Christian Petersen <m.c.p@wolk-project.de>
Organization: Working Overloaded Linux Kernel
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: filesystem access slowing system to a crawl
Date: Thu, 27 Feb 2003 00:17:57 +0100
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Cc: Andrea Arcangeli <andrea@suse.de>, Andrew Morton <akpm@digeo.com>,
       linux-kernel@vger.kernel.org, Andrew Morton <akpm@digeo.com>
References: <A1FE021ABD24D411BE2D0050DA450B925EEA6C@MERKUR> <200302191742.02275.m.c.p@wolk-project.de> <20030219174940.GJ14633@x30.suse.de>
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On Wednesday 19 February 2003 18:49, Andrea Arcangeli wrote:

Hi Marcelo,

apply this, please!

> On Wed, Feb 19, 2003 at 05:42:34PM +0100, Marc-Christian Petersen wrote:
> > On Wednesday 05 February 2003 10:39, Andrew Morton wrote:
> >
> > Hi Andrew,
> >
> > > > Running just "find /" (or ls -R or tar on a large directory) locally
> > > > slows the box down to absolute unresponsiveness - it takes minutes
> > > > to just run ps and kill the find process. During that time, kupdated
> > > > and kswapd gobble up all available CPU time.
> > >
> > > Could be that your "low memory" is filled up with inodes.  This would
> > > only happen in these tests if you're using ext2, and there are a *lot*
> > > of directories.
> > > I've prepared a lineup of Andrea's VM patches at
> > > It would be useful if you could apply 10_inode-highmem-2.patch and
> > > report back.  It applies to 2.4.19 as well, and should work OK there.
> >
> > is there any reason why this (inode-highmem-2) has never been submitted
> > for inclusion into mainline yet?


Marcelo please include this:
http://www.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.21pre4aa3/10_inode-highmem-2
other fixes should be included too but they don't apply cleanly yet
unfortunately, I (or somebody else) should rediff them against mainline.
> Andrea


ciao, Marc


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