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Subject: Re: NAPI and tg3
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Steffen Persvold <sp@scali.com>
Cc: "David S. Miller" <davem@redhat.com>, Jeff Garzik <jgarzik@pobox.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Mon, 2003-01-06 at 15:00, Steffen Persvold wrote:
> I discovered that if I renice the ksoftirqd processes to level 0, the 
> performance was actually better with the NAPI enabled driver compared to 
> the one without (as was intended my NAPI IIRC). With the default nice 
> level (19) on the ksoftirqd processes, the performance on multithreaded 
> programs was pretty lousy with the NAPI enabled driver.
> 
> Any reason why the ksoftirqd shouldn't be nice level 0 by default ? Is 
> this already fixed in 2.4.21-pre series ?

Hack the code to only fall back to ksoftirqd when there are say 10 rather
than 1 pending event and it should perform even better but still handle
overload properly

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