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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: Fri, 24 Sep 2004 10:30:07 +0200
Cc: Andi Kleen <ak@xxxxxxx>, niv@xxxxxxxxxx, andy.grover@xxxxxxxxx, anton@xxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <>
References: <> <> <> <> <> <> <> <> <> <>
Sender: netdev-bounce@xxxxxxxxxxx
> Anyways, for testing, something like the patch below.  If things
> still stink a bit, try using a limit of "2" in this patch instead
> of "4".

Doesn't help unfortunately. Anything >= 2 gives 22MB/s or even below
(e.g. 3 gives 16MB/s). The only factor that works is 1, but that 
turns TSO effectively off, doesn't it? 


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