From: Eric Dumazet <dada1@cosmosbay.com>
To: Christoph Lameter <cl@linux.com>
Cc: David Miller <davem@davemloft.net>,
Michael Chan <mchan@broadcom.com>,
Ben Hutchings <bhutchings@solarflare.com>,
netdev@vger.kernel.org
Subject: Re: Network latency regressions from 2.6.22 to 2.6.29 (results with IRQ affinity)
Date: Sat, 18 Apr 2009 10:18:22 +0200 [thread overview]
Message-ID: <49E98CCE.2000701@cosmosbay.com> (raw)
In-Reply-To: <alpine.DEB.1.10.0904171238550.20049@qirst.com>
Christoph Lameter a écrit :
> On Thu, 16 Apr 2009, David Miller wrote:
>
>> We really need to find a good way to fix that IRQ affinity issue.
>
> Here are the results with setting interrupt affinity. We are still loosing
> 5 usecs from .22 to .30-rc2. We will investigate more in depth time
> permitting.
>
> UDP ping pong 40 bytes
>
> Kernel Test 1 Test 2 Test 3 Test 4 Avg
> 2.6.22 83.1125 83.4 83.03 82.95 83.07
> 2.6.23 83.33 83.51 83.18 83.42 83.21
> 2.6.24 82.7775 82.8 82.77 82.77 82.77
> 2.6.25 85.875 85.94 85.75 86.06 85.75
> 2.6.26 87.4025 87.53 87.25 87.3 87.53
> 2.6.27 87.81 87.81 87.77 87.82 87.84
> 2.6.28 87.4275 87.77 87.24 87.28 87.42
> 2.6.29 88.4325 88.48 88.42 88.44 88.39
> 2.6.30-rc2 88.4925 88.49 88.44 88.56 88.48
You are using UDP, and UDP got memory accounting. This
next prev parent reply other threads:[~2009-04-18 8:19 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-16 16:10 Network latency regressions from 2.6.22 to 2.6.29 Christoph Lameter
2009-04-16 17:21 ` Rick Jones
2009-04-16 19:06 ` Christoph Lameter
2009-04-16 19:29 ` Eric Dumazet
2009-04-16 19:33 ` Christoph Lameter
2009-04-16 22:47 ` David Miller
2009-04-17 13:46 ` Christoph Lameter
2009-04-17 21:43 ` Ilpo Järvinen
2009-04-16 20:05 ` Rick Jones
2009-04-16 18:07 ` Ben Hutchings
2009-04-16 19:02 ` Christoph Lameter
2009-04-16 21:19 ` Ben Hutchings
2009-04-16 22:47 ` David Miller
2009-04-16 19:43 ` Eric Dumazet
2009-04-16 19:50 ` Eric Dumazet
2009-04-16 20:01 ` Christoph Lameter
2009-04-16 23:00 ` David Miller
2009-04-17 16:42 ` Network latency regressions from 2.6.22 to 2.6.29 (results with IRQ affinity) Christoph Lameter
2009-04-18 8:18 ` Eric Dumazet [this message]
2009-04-18 8:20 ` Eric Dumazet
2009-04-18 19:43 ` Eric Dumazet
2009-04-20 17:29 ` Christoph Lameter
2009-04-20 17:57 ` Eric Dumazet
2009-04-20 18:13 ` Christoph Lameter
2009-04-20 18:46 ` Eric Dumazet
2009-04-20 19:16 ` Christoph Lameter
2009-04-20 20:07 ` Eric Dumazet
2009-04-20 21:14 ` Christoph Lameter
2009-04-20 21:52 ` Eric Dumazet
2009-04-21 14:00 ` Christoph Lameter
2009-04-21 19:36 ` Network latency regressions from 2.6.22 to 2.6.29 (MSI off) Christoph Lameter
2009-04-20 19:44 ` Network latency regressions from 2.6.22 to 2.6.29 (results with IRQ affinity) Evgeniy Polyakov
2009-04-16 19:55 ` Network latency regressions from 2.6.22 to 2.6.29 Christoph Lameter
2009-04-16 21:57 ` Michael Chan
2009-04-17 13:47 ` Christoph Lameter
2009-04-16 22:59 ` David Miller
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=49E98CCE.2000701@cosmosbay.com \
--to=dada1@cosmosbay.com \
--cc=bhutchings@solarflare.com \
--cc=cl@linux.com \
--cc=davem@davemloft.net \
--cc=mchan@broadcom.com \
--cc=netdev@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.