From: Eric Dumazet <eric.dumazet@gmail.com>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: 10GBE performance drop with net.ipv4.tcp_timestamps=0
Date: Wed, 20 Jun 2012 11:47:25 +0200 [thread overview]
Message-ID: <1340185645.4604.853.camel@edumazet-glaptop> (raw)
In-Reply-To: <4FE198FE.5050202@profihost.ag>
On Wed, 2012-06-20 at 11:33 +0200, Stefan Priebe - Profihost AG wrote:
> Sure. In that case i get 4Gbit/s in both variants. I also tried two
> other different machines same result.
>
So 3.5 on receiver is the problem, it seems ?
And you checked all the stuff about irq affinities, i presume, since a
lot of things might have changed between 2.6.32 and 3.5 ?
cat /proc/interrupts
what kind of NIC it is ?
next prev parent reply other threads:[~2012-06-20 9:47 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1340185645.4604.853.camel@edumazet-glaptop \
--to=eric.dumazet@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=s.priebe@profihost.ag \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox