netdev - Re: [PATCH] Improved network performance by balancing Rx against other work

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Date:	Sun, 21 Mar 2010 21:24:49 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	peter.chubb@...ta.com.au
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] Improved network performance by balancing Rx against
 other work

From: Peter Chubb <peter.chubb@...ta.com.au>
Date: Mon, 22 Mar 2010 15:19:54 +1100

> David> It's one of the best drivers in the locking area.
> 
> It looked good from that aspect, but used too many features of NAPI
> for me to modify quickly, and still have a simple and
> easy-to-understand patch.

What's so complicated about it?  All of the NAPI logic is
locks into a wrapper function that encapsulates all of
the top-level budget and interrupt masking logic.

> Anyway, I'm intending to try to reproduce the results with a different
> driver, as I said.

Well, you do so at your own peril.  tg3 is the best, whereas
r8169 is really awful and people report NAPI wedges with it
all the time.
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