From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chuck Ebbert <cebbert@redhat.com>
Subject: Re: Unexcepted latency (order of 100-200 ms) with TCP (packet receive)
Date: Thu, 26 Apr 2007 12:16:41 -0400
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References: <Pine.LNX.4.64.0704241518370.28337@kivilampi-30.cs.helsinki.fi>
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Cc: Netdev <netdev@vger.kernel.org>
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Ilpo J=E4rvinen wrote:
> ...I'm unsure how to continue the investigation from this point onwar=
d=20
> and asking for ideas/suggestions or how to rule out more possibilitie=
s...=20
> Or is there some knob which I don't know of that should be toggled or=
=20
> something, is 2.6 network stack expected to behave this way?
>=20

Try a different network adapter.

Try turning off hardware TSO offload:
  ethtool -K ethX tso off