From: Eric Dumazet <eric.dumazet@gmail.com>
To: Stefan Priebe <s.priebe@profihost.ag>
Cc: Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: 10GBE performance drop with net.ipv4.tcp_timestamps=0
Date: Tue, 19 Jun 2012 23:31:33 +0200 [thread overview]
Message-ID: <1340141493.4604.773.camel@edumazet-glaptop> (raw)
In-Reply-To: <4FE0EA33.1000309@profihost.ag>
On Tue, 2012-06-19 at 23:08 +0200, Stefan Priebe wrote:
> Hello List,
>
> i'm testing 10GBE speed with tweo servers. One with 3.5-rc3 nd thoe
> other one whith RHEL 6 (2.6.32 kernel).
>
> I noticed that setting
> net.ipv4.tcp_timestamps=0
>
> descreased the performance from 9,7 Full Duplex to 3-4Gb/s.
>
> Is this bahviour fine? What should / could i tet?
>
Really, you should provide more input than that, if you really want us
to help.
next prev parent reply other threads:[~2012-06-19 21:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-19 21:08 10GBE performance drop with net.ipv4.tcp_timestamps=0 Stefan Priebe
2012-06-19 21:31 ` Eric Dumazet [this message]
2012-06-20 7:00 ` Stefan Priebe - Profihost AG
2012-06-20 7:22 ` Eric Dumazet
2012-06-20 8:21 ` Stefan Priebe - Profihost AG
2012-06-20 8:41 ` Eric Dumazet
2012-06-20 9:06 ` Stefan Priebe - Profihost AG
2012-06-20 9:12 ` Stefan Priebe - Profihost AG
2012-06-20 9:17 ` Eric Dumazet
2012-06-20 9:25 ` Stefan Priebe - Profihost AG
2012-06-20 9:28 ` Eric Dumazet
2012-06-20 9:33 ` Stefan Priebe - Profihost AG
2012-06-20 9:47 ` Eric Dumazet
2012-06-20 9:50 ` Stefan Priebe - Profihost AG
2012-06-20 10:06 ` Eric Dumazet
2012-06-20 11:08 ` Eric Dumazet
2012-06-20 9:16 ` Eric Dumazet
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