netdev - Re: r8169: slow samba performance

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Date:	Tue, 4 Sep 2007 15:00:11 -0600 (MDT)
From:	john@...eSkyTours.com
To:	Francois Romieu <romieu@...zoreil.com>
cc:	Bruce Cole <bacole@...il.com>, netdev@...r.kernel.org
Subject: Re: r8169: slow samba performance


On Tue, 4 Sep 2007, Francois Romieu wrote:

> john@...eSkyTours.com <john@...eSkyTours.com> :
> [...]
>> 20070903-2.6.23-rc5-r8169-test.patch applied against 2.6.23-rc5 works fine.
>> Performance is acceptable.
>
> Does "acceptable" mean that there is a noticeable difference when compared
> to the patch based on a busy-waiting loop ?


Without this patch, latency in bringing up emacs, or in display of pages in
firefox is extremely high.  With the patch, latency is pretty much what I
see when using an old tulip based NIC.

Is there a specific test you wish me to try?


>> Would you like me to *just* try patches 1 & 2, to help narrow down anything?
>
> I expect patch #2 alone to be enough to enhance the performance. If it gets
> proven, the patch would be a good candidate for a quick merge upstream.


Okay, I will build another kernel with just #2 applied.


John


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