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Re: bad TSO performance in 2.6.9-rc2-BK

To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: Re: bad TSO performance in 2.6.9-rc2-BK
From: Andi Kleen <ak@xxxxxxx>
Date: Wed, 29 Sep 2004 23:43:50 +0200
Cc: Nivedita Singhvi <niv@xxxxxxxxxx>, jheffner@xxxxxxx, ak@xxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20040929142252.393a976d.davem@davemloft.net>
References: <20040928223344.GC2975@wotan.suse.de> <Pine.NEB.4.33.0409282323220.27103-100000@dexter.psc.edu> <20040929140016.7ffa4e8b.davem@davemloft.net> <415B2647.8080803@us.ibm.com> <20040929142252.393a976d.davem@davemloft.net>
Sender: netdev-bounce@xxxxxxxxxxx
> I need to see the crash folks are seeing.  Does it only happen
> when you have tcpdump attached to the interface running the
> test?  Does it happen only on the sender or the receiver

It happens without tcpdump too.

> in the netperf test?  Those would be a good clues, indicating

The sender first gets slow, then eventually crashes.

-Andi

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