From: Eric Dumazet <eric.dumazet@gmail.com>
To: "Paweł Staszewski" <pstaszewski@itcare.pl>
Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org
Subject: Re: [PATCH 00/16] Remove the ipv4 routing cache
Date: Thu, 26 Jul 2012 19:02:37 +0200 [thread overview]
Message-ID: <1343322157.2626.11740.camel@edumazet-glaptop> (raw)
In-Reply-To: <500D8FEE.7050802@itcare.pl>
On Mon, 2012-07-23 at 19:54 +0200, Paweł Staszewski wrote:
> I make some real life tests with 10Gbit traffic and make some rdos.
> With kernel 3.4.5 when I reach 6M routing cache entries - traffic is not
> forwarded - on my hardware with 64G RAM
>
> With kernel - 3.5.0-rc7-next-20120720 + David M. patches - route cache
> removal + fix
> Traffic is forwarder all the time at speed 8.2Mpps RX from traffic
> generator and 8.2Mpps TX to the sink
>
> Also I see performance improvement.
>
> With kernel 3.4.5 I can reach maximum od 7.5Mpps with my hardware
> And with kernel 3.5.0-rc7-next-20120720 i can reach 8.2Mpps - forwarding
> UDP performance - can be more - but my TX pktgen that use 6 cores can't
> do more.
>
> Really thanks for this :)
In real life, with TCP traffic, make sure you
set /proc/sys/net/ipv4/ip_early_demux to 0
next prev parent reply other threads:[~2012-07-26 17:02 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-20 21:25 [PATCH 00/16] Remove the ipv4 routing cache David Miller
2012-07-20 22:05 ` Eric Dumazet
2012-07-20 22:42 ` Eric Dumazet
2012-07-20 22:50 ` David Miller
2012-07-20 22:54 ` David Miller
2012-07-20 23:13 ` David Miller
2012-07-21 5:40 ` Eric Dumazet
2012-07-22 7:47 ` Vijay Subramanian
2012-07-22 19:42 ` David Miller
2012-07-23 0:39 ` David Miller
2012-07-23 7:15 ` Eric Dumazet
2012-07-23 17:54 ` Paweł Staszewski
2012-07-23 20:10 ` David Miller
2012-07-26 17:02 ` Eric Dumazet [this message]
2012-07-25 23:02 ` Alexander Duyck
2012-07-25 23:17 ` David Miller
2012-07-25 23:39 ` David Miller
2012-07-26 0:54 ` David Miller
2012-07-26 2:30 ` Alexander Duyck
2012-07-26 5:32 ` David Miller
2012-07-26 8:13 ` Eric Dumazet
2012-07-26 8:18 ` David Miller
2012-07-26 8:27 ` Eric Dumazet
2012-07-26 8:47 ` David Miller
2012-07-26 9:12 ` Eric Dumazet
2012-07-26 17:18 ` Alexander Duyck
2012-07-26 17:30 ` Eric Dumazet
2012-07-26 17:36 ` Eric Dumazet
2012-07-26 17:43 ` Eric Dumazet
2012-07-26 17:48 ` Eric Dumazet
2012-07-26 18:26 ` Alexander Duyck
2012-07-26 21:06 ` David Miller
2012-07-26 22:03 ` Alexander Duyck
2012-07-26 22:13 ` Stephen Hemminger
2012-07-26 22:19 ` Eric Dumazet
2012-07-26 22:48 ` David Miller
2012-07-26 22:53 ` David Miller
2012-07-27 2:14 ` Alexander Duyck
2012-07-27 3:08 ` David Miller
2012-07-27 6:02 ` David Miller
2012-07-27 10:01 ` Eric Dumazet
2012-07-27 14:53 ` Eric W. Biederman
2012-07-27 15:12 ` Eric Dumazet
2012-07-27 16:23 ` Eric W. Biederman
2012-07-27 16:28 ` Eric Dumazet
2012-07-27 19:06 ` Alexander Duyck
2012-07-28 4:15 ` David Miller
2012-07-28 5:45 ` Alexander Duyck
2012-07-26 18:06 ` Alexander Duyck
2012-07-26 21:00 ` David Miller
2012-07-26 20:59 ` David Miller
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