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From: Andrew Morton <akpm@digeo.com>
To: jamesclv@us.ibm.com
Cc: Andrea Arcangeli <andrea@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: Kswapd madness in 2.4 kernels
Date: Thu, 24 Oct 2002 21:32:01 -0700	[thread overview]
Message-ID: <3DB8C941.DEF1C069@digeo.com> (raw)
In-Reply-To: 200210242026.13071.jamesclv@us.ibm.com

James Cleverdon wrote:
> 
>    Andrea_Archangeli-inode_highmem_imbalance.patch    Type: text/x-diff

That's in -aa kernels, is correct and is needed.

>    Andrew_Morton-2.4_VM_sucks._Again.patch    Type: text/x-diff

hmm.  Someone seems to have renamed my nuke-buffers patch ;)

My main concern is that this was a real quickie; it does a very
aggressive takedown of buffer_heads.  Andrea's kernels contain a
patch which takes a very different approach.  See
http://www.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.20pre8aa2/05_vm_16_active_free_zone_bhs-1

I don't think anyone has tried that patch in isolation though...

If nuke-buffers passes testing and doesn't impact performance then
fine.  A more cautious approach would be to use the active_free_zone_bhs
patch.  If that proves inadequate then add in the "read" part of nuke-buffers.
That means dropping the fs/buffer.c part.

  reply	other threads:[~2002-10-25  4:25 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-25  3:26 Kswapd madness in 2.4 kernels James Cleverdon
2002-10-25  4:32 ` Andrew Morton [this message]
2002-11-05 22:13   ` James Cleverdon
2002-11-06 11:11     ` Andrea Arcangeli
2002-11-06 13:18       ` Marcelo Tosatti
2002-11-06 16:40         ` Andrea Arcangeli
2002-10-25 16:57 ` Rik van Riel

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