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Re: bad TSO performance in 2.6.9-rc2-BK

from [David S. Miller] [Permanent Link][Original]
To: Andi Kleen <ak@xxxxxxx>
Subject: Re: bad TSO performance in 2.6.9-rc2-BK
From: "David S. Miller" <davem@xxxxxxxxxxxxx>
Date: Tue, 28 Sep 2004 17:04:20 -0700
Cc: herbert@xxxxxxxxxxxxxxxxxxx, niv@xxxxxxxxxx, andy.grover@xxxxxxxxx, anton@xxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20040929015534.3b39b720.ak@suse.de>
References: <20040923164149.5368d291.davem@davemloft.net> <E1CBkIW-0001dF-00@gondolin.me.apana.org.au> <20040927025048.GA6723@gondor.apana.org.au> <20040926210029.22750d47.davem@davemloft.net> <20040927054541.GA8858@gondor.apana.org.au> <20040927120154.09fdcadf.davem@davemloft.net> <20040927213233.GC7243@gondor.apana.org.au> <20040928141002.164c60af.davem@davemloft.net> <20040928213415.GA4646@wotan.suse.de> <20040928145345.2530d30e.davem@davemloft.net> <20040928223344.GC2975@wotan.suse.de> <20040928155706.65405e88.davem@davemloft.net> <20040929012757.5d0dff61.ak@suse.de> <20040928163509.624a748b.davem@davemloft.net> <20040929015534.3b39b720.ak@suse.de>
Sender: netdev-bounce@xxxxxxxxxxx 
On Wed, 29 Sep 2004 01:55:34 +0200
Andi Kleen <ak@xxxxxxx> wrote:

> Hmpf, it stopped crashing after I recompiled without -funit-at-a-time
> Maybe it is some compiler issue.

Could be, I was studying all of the retransmit queue state
handling and tried to find some hole in the TSO case and I
could not do so.
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