Date: Wed, 9 Mar 2005 21:17:30 -0800
From: Andrew Morton <akpm@osdl.org>
To: Christian Schmid <webmaster@rapidforum.com>
Cc: greearb@candelatech.com, nickpiggin@yahoo.com.au,
       linux-kernel@vger.kernel.org
Subject: Re: BUG: Slowdown on 3000 socket-machines tracked down
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Christian Schmid <webmaster@rapidforum.com> wrote:
>
>  > So, maybe a VM problem?  That would be a good place to focus since
>  > I think we can be fairly certain it isn't a problem in just the
>  > networking code.  Otherwise, my tests would show lower bandwidth.
> 
>  Thanks to your tests I am really sure that its no network-code problem anymore. But what I THINK it 
>  is: The network is allocating buffers dynamically and if the vm doesnt provide that buffers fast 
>  enough, it locks as well.

Did anyone have a 100-liner which demonstrates this problem?

The output of `vmstat 1' when the thing starts happening would be interesting.
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