From: "Matt H." <lkml@lpbproductions.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: incoming packet latency in 2.4.[18-20]
Date: Wed, 15 Oct 2003 09:15:56 -0700 [thread overview]
Message-ID: <200310150915.56857.lkml@lpbproductions.com> (raw)
In-Reply-To: <3F8D6BB0.7060809@nortelnetworks.com>
Have you tried a more recent kernel?
Matt H.
On Wednesday 15 October 2003 08:45 am, Chris Friesen wrote:
> There is an issue with incoming packet latency in the kernels mentioned.
>
> It seems that if you send in a burst of messages, the amount of time it
> takes to wake the listening process is dependent on the size of the
> message burst. 2.4.18-2.4.20 all show this behaviour, 2.6 doesn't.
>
> Some numbers for a udp message size of 2 bytes:
>
> 1 packet, average latency 12 usecs
> 10 packets, average latency 66 usecs
> 100 packets, average latency 477 usecs
>
> Is this a known issue? Is there an easy way to fix this, or is it
> something inherent in the 2.4 architecture?
>
> Thanks,
>
> Chris
next prev parent reply other threads:[~2003-10-15 16:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-15 15:45 Chris Friesen
2003-10-15 16:15 ` Matt H. [this message]
2003-10-15 16:16 ` Stephan von Krawczynski
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