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 12:05:09 +0200 [thread overview]
Message-ID: <4FDEFD55.7010204@profihost.ag> (raw)
In-Reply-To: <1340012706.7491.770.camel@edumazet-glaptop>
Am 18.06.2012 11:45, schrieb Eric Dumazet:
> On Mon, 2012-06-18 at 11:22 +0200, Stefan Priebe - Profihost AG wrote:
>> Hello list,
>>
>> i've discovered very unstable 10GBE performance using recent kernels.
>> I'm using some optimized settings mentioned by intel here
>> (part:Improving Performance):
>> http://downloadmirror.intel.com/5874/eng/README.txt
>>
> like what settings ?
Sorry these ones:
http://pastebin.com/raw.php?i=J2XRFAjD
>> Any ideas?
>
> ethtool -S eth0
From host1 and 2: http://pastebin.com/raw.php?i=0Pp8Vs3Y
> ethtool -k eth0
From host1 and 2: # ethtool -k eth2
Offload parameters for eth2:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
ntuple-filters: off
receive-hashing: on
# ethtool -k eth2
Offload parameters for eth2:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
ntuple-filters: off
receive-hashing: on
> netstat -s (on sender, on receiver)
From host1 and 2: http://pastebin.com/raw.php?i=P9T96j0L
> single flow , multiple flows ?
host1: iperf -s
host2: iperf -c ssdstor002 -d -t 600 -i 10;
In this test i got around 7.4Gbit/s
Stefan
next prev parent reply other threads:[~2012-06-18 10:05 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 [this message]
2012-06-18 10:25 ` Eric Dumazet
2012-06-18 12:36 ` Stefan Priebe - Profihost AG
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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