netdev - Re: [PATCH v5] rfs: Receive Flow Steering

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Message-ID: <1271452358.16881.4486.camel@edumazet-laptop>
Date:	Fri, 16 Apr 2010 23:12:38 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH v5] rfs: Receive Flow Steering

Le vendredi 16 avril 2010 à 13:42 -0700, Tom Herbert a écrit :
> On Fri, Apr 16, 2010 at 11:53 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> > Le vendredi 16 avril 2010 à 11:35 -0700, Tom Herbert a écrit :
> >> Results with "tbench 16" on an 8 core Intel machine.
> >>
> >> No RPS/RFS:  2155 MB/sec
> >> RPS (0ff mask): 1700 MB/sec
> >> RFS: 1097
> >>
> 
> Blah, I mistakingly reported that... should have been:
> 
> No RPS/RFS:  2155 MB/sec
> RPS (0ff mask): 1097 MB/sec
> RFS: 1700 MB/sec
> 
> Sorry about that!

> This was my expectation too, and what my "corrected" numbers show :-)
> But, I take it this is different in your results?


My results are on a "tbench 16" on an dual X5570  @ 2.93GHz.
(16 logical cpus)

No RPS , no RFS : 4448.14 MB/sec 
RPS : 2298.00 MB/sec (but lot of variation)
RFS : 2600 MB/sec

Maybe my RFS setup is bad ?
(8192 flows)


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