Messages in this thread | | | Date | Wed, 15 Oct 2003 11:45:52 -0400 | From | Chris Friesen <> | Subject | incoming packet latency in 2.4.[18-20] |
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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
-- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com
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