From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: unstable 10GBE performance with recent kernels (> 3.0.X)
Date: Mon, 18 Jun 2012 14:36:02 +0200 [thread overview]
Message-ID: <4FDF20B2.2010603@profihost.ag> (raw)
In-Reply-To: <1340015143.7491.855.camel@edumazet-glaptop>
Am 18.06.2012 12:25, schrieb Eric Dumazet:
> I would remove all this (pretty old and obsolete) stuff and use standard
> params.
OK, thanks. done.
I've one RHEL6 system (using default 2.6.32 kernel) where only using
"ntuple on" results in just 4-5Gbit/s while the others using 3.5.0-rc2
are working fine.
> Only thing you could do is :
> ethtool -K eth2 ntuple on
>
> on both machines
Thanks that works great and boosts the performance a lot. What does it
do? man ethtool doesn't show anything useful.
Is this also recommanded for 1Gb/s?
Could you recommend a tcp_congestion_control module? RHEL6 uses cubic by
default. Some others use reno or bic.
Stefan
next prev parent reply other threads:[~2012-06-18 12:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-18 9:22 unstable 10GBE performance with recent kernels (> 3.0.X) Stefan Priebe - Profihost AG
2012-06-18 9:45 ` Eric Dumazet
2012-06-18 10:05 ` Stefan Priebe - Profihost AG
2012-06-18 10:25 ` Eric Dumazet
2012-06-18 12:36 ` Stefan Priebe - Profihost AG [this message]
2012-06-18 12:51 ` Eric Dumazet
2012-06-18 13:07 ` Stefan Priebe - Profihost AG
2012-06-18 13:29 ` Eric Dumazet
2012-06-18 14:17 ` Stefan Priebe - Profihost AG
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