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Re: TCP-Protection is really a pain...

To: Jeff Garzik <jgarzik@xxxxxxxxx>
Subject: Re: TCP-Protection is really a pain...
From: Christian Schmid <webmaster@xxxxxxxxxxxxxx>
Date: Thu, 03 Feb 2005 23:29:10 +0100
Cc: Stephen Hemminger <shemminger@xxxxxxxx>, netdev@xxxxxxxxxxx
In-reply-to: <4202A206.7060100@xxxxxxxxx>
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I turned it off and without it, I was unable to reproduce any stalls anymore.

Jeff Garzik wrote:
Christian Schmid wrote:

What exactly is tcp segmentation offload? Where can I read more about it? Should I disable it or is this not a good idea?

It's an optimization designed to reduce CPU usage for zero-copy apps (those that use sendfile(2)).

It would be a useful datapoint to disable TSO, and see if that improves things for you.


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