netdev - Re: [PATCH] net: add additional lock to qdisc to increase throughput

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Message-ID: <1275490370.2725.178.camel@edumazet-laptop>
Date:	Wed, 02 Jun 2010 16:52:50 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	alexander.h.duyck@...el.com, netdev@...r.kernel.org
Subject: Re: [PATCH] net: add additional lock to qdisc to increase
 throughput

Le mercredi 02 juin 2010 à 05:10 -0700, David Miller a écrit :
> From: "Duyck, Alexander H" <alexander.h.duyck@...el.com>
> Date: Fri, 21 May 2010 13:04:20 -0700
> 
> > Eric Dumazet wrote:
> >> Tests with following script gave a boost from ~50.000 pps to ~600.000
> >> pps on a dual quad core machine (E5450 @3.00GHz), tg3 driver.
> >> (A single netperf flow can reach ~800.000 pps on this platform)
> >> 
> >> for j in `seq 0 3`; do
> >>   for i in `seq 0 7`; do
> >>     netperf -H 192.168.0.1 -t UDP_STREAM -l 60 -N -T $i -- -m 6 &
> >>   done
> >> done
> > 
> > Running the same script with your patch my results went from 200Kpps to 1.2Mpps on a dual Xeon 5570.
> > 
> > Acked-by: Alexander Duyck <alexander.h.duyck@...el.com>
> 
> Applied, thanks guys.

Thanks David, I realize you did all the necessary changes after
qdisc_run_begin/qdisc_is_running/ integration ;)


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