From mboxrd@z Thu Jan  1 00:00:00 1970
From: jamal <hadi@cyberus.ca>
Subject: Re: [RFC] New driver API to speed up small packets xmits
Date: Thu, 10 May 2007 16:21:20 -0400
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Cc: Sridhar Samudrala <sri@us.ibm.com>,
	Rick Jones <rick.jones2@hp.com>,
	Krishna Kumar2 <krkumar2@in.ibm.com>,
	Evgeniy Polyakov <johnpol@2ka.mipt.ru>, netdev@vger.kernel.org
To: Gagan Arneja <gaagaan@gmail.com>
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On Thu, 2007-10-05 at 13:15 -0700, Gagan Arneja wrote:

> Really! It's just the transmit routine. How radical can that be?
> 

Ok, you have a point there, but it could be challenging with many
tunables:
For example:
my biggest challenge with the e1000 was just hacking up the DMA setup
path - i seem to get better numbers if i dont kick the DMA until i stash
all the packets on the ring first etc. It seemed counter-intuitive.

Now if you can ammortize PCI operations as well (the 10K cycles you
pointed out), i think thats where you get the best bang for the buck.

cheers,
jamal