| To: | Andi Kleen <ak@xxxxxxx> |
|---|---|
| Subject: | Re: bad TSO performance in 2.6.9-rc2-BK |
| From: | Andrew Grover <andy.grover@xxxxxxxxx> |
| Date: | Wed, 22 Sep 2004 13:12:47 -0700 |
| Cc: | "David S. Miller" <davem@xxxxxxxxxxxxx>, anton@xxxxxxxxx, netdev@xxxxxxxxxxx |
| In-reply-to: | <20040922195515.GA2619@wotan.suse.de> |
| References: | <20040920063012.GL2825@krispykreme> <20040920203021.GD4242@wotan.suse.de> <20040921155835.18aee381.davem@davemloft.net> <20040922140000.GD27432@wotan.suse.de> <20040922111209.7887df53.davem@davemloft.net> <20040922195515.GA2619@wotan.suse.de> |
| Reply-to: | Andrew Grover <andy.grover@xxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
On Wed, 22 Sep 2004 21:55:15 +0200, Andi Kleen <ak@xxxxxxx> wrote: > With tso off i get the same performance as on 2.6.5. > > I must add that this is a CSA e1000 (directly integrated into > the chipset and doesn't use PCI) and TSO doesn't seem to be > bring any advantage. On 2.6.5 the performance is the same > with both TSO on or off. I think this is caused by the congestion changes added between 2.6.9-rc1 and rc2. I am seeing good performance with rc1 and tso on (or off), but bad performance with rc2 and bk-latest only if tso is on. Regards -- Andy |
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