From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nivedita Singhvi <niv@us.ibm.com>
Subject: Re: High number of concurrent connections causes 2.6.4 to go berserk
Date: Thu, 01 Apr 2004 19:28:53 -0800
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Cc: netdev@oss.sgi.com, Yusuf Goolamabbas <yusufg@outblaze.com>
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To: Christopher Chan <cchan@outblaze.com>
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Christopher Chan wrote:

> When tcp_max_syn_backlog is set to 4096 and
> route.max_size = 131072
> route.gc_thresh = 65536
> 
> the box goes berserk almost immediately after bootup due to a bounce 
> flood hitting the box.

> The below values seem to workaround whatever problem the kernel has.
> 
> tcp_max_syn_backlog = 2048
> route.max_size = 1048576
> route.gc_thresh = 65536

Did you try just one of the first two and see which
one actually made a difference? I'm assuming the first,
but that might not be the case..

thanks,
Nivedita