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Date: Sat, 14 Jul 2001 16:13:33 -0400
From: Dirk <dirkw@rentec.com>
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To: Marcelo Tosatti <marcelo@conectiva.com.br>
CC: lkml <linux-kernel@vger.kernel.org>, Rik van Riel <riel@conectiva.com.br>,
        Mike Galbraith <mikeg@wen-online.de>, linux-mm@kvack.org,
        "Stephen C. Tweedie" <sct@redhat.com>
Subject: Re: [PATCH] Separate global/perzone inactive/free shortage
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Marcelo Tosatti wrote:

> Hi,
>
> As well known, the VM does not make a distiction between global and
> per-zone shortages when trying to free memory. That means if only a given
> memory zone is under shortage, the kernel will scan pages from all zones.
>
> The following patch (against 2.4.6-ac2), changes the kernel behaviour to
> avoid freeing pages from zones which do not have an inactive and/or
> free shortage.
>
> Now I'm able to run memory hogs allocating 4GB of memory (on 4GB machine)
> without getting real long hangs on my ssh session. (which used to happen
> on stock -ac2 due to exhaustion of DMA pages for networking).
>
> Comments ?
>
> Dirk, Can you please try the patch and tell us if it fixes your problem ?
>

great!! that is definitely better, the machine talks to me again. there are some
small "but"s. however. i write them up and let you know.

    ~dirkw


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