From: Ralf Baechle <ralf@linux-mips.org>
To: "Mitchell, Earl" <earlm@mips.com>
Cc: kernel coder <lhrkernelcoder@gmail.com>, linux-mips@linux-mips.org
Subject: Re: Fwd: How to improve performance of 2.6 kernel
Date: Thu, 20 Oct 2005 10:36:41 +0100 [thread overview]
Message-ID: <20051020093641.GL2616@linux-mips.org> (raw)
In-Reply-To: <3CB54817FDF733459B230DD27C690CEC01049446@Exchange.MIPS.COM>
On Wed, Oct 19, 2005 at 11:12:22AM -0700, Mitchell, Earl wrote:
> If you are looking at network performance ...
> A while back I briefly looked at this and it
> looked like the per packet processing time had
> gone up significantly between 2.4.20 and
> 2.6.x. Problem was not NAPI which switches
> from interrupt to polling mode when you get a burst
> of packets. I actually traced a single packet from Rx
> to Tx. Unfortunately I didn't save my data and did
> not isolate where increased time was being spent.
A common cause for low networking performance is connection tracking. Just
loading the module will have serious impact.
Ralf
next prev parent reply other threads:[~2005-10-20 9:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-19 18:12 Fwd: How to improve performance of 2.6 kernel Mitchell, Earl
2005-10-19 18:12 ` Mitchell, Earl
2005-10-20 9:36 ` Ralf Baechle [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-10-17 11:29 kernel coder
2005-10-17 12:36 ` Stuart Longland
2005-10-17 15:19 ` Kevin D. Kissell
2005-10-17 16:38 ` Dan Malek
2005-10-19 5:55 ` Fwd: " kernel coder
2005-10-19 15:53 ` Ralf Baechle
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