Subject: Re: [PATCH v6] net: batch skb dequeueing from softnet input_pkt_queue

From: jamal <[email-masked]>
Date: Mon, 03 May 2010 16:15:31 -0400

On Mon, 2010-05-03 at 00:08 +0200, Eric Dumazet wrote:

> 
> Test I did this week with Jamal.
> 
> We first set a "ee" rps mask, because all NIC interrupts were handled by
> CPU0, and Jamal thought like you, that not using cpu4 would give better
> performance.
> 
> But using "fe" mask gave me a bonus, from ~700.000 pps to ~800.000 pps
> 

I am seeing the opposite with my machine (Nehalem):
with ee i get 99.4% and fe i get 94.2% whereas non-rps
is about 98.1%.

cheers,
jamal

PS:- sorry dont have time to collect a lot more data - tommorow i could
do more.