Re: incoming packet latency in 2.4.[18-20]

[Stephan von Krawczynski]

On Wed, 15 Oct 2003 11:45:52 -0400
Chris Friesen <cfriesen@xxxxxxxxxxxxxxxxxx> 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?

Can you verify these numbers with 2.4.22 and 2.4.23-pre7 ?

Regards,
Stephan
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