Re: Why the number of /proc/interrupts doesn't change when nic isunder heavy workload?

From: Eric Dumazet
Date: Mon Jan 16 2012 - 01:53:32 EST


Le dimanche 15 janvier 2012 Ã 17:27 -0500, Yuehai Xu a Ãcrit :
> Thanks for replying! Please see below:

> My memcached uses 8 different UDP sockets(8 different UDP ports), so
> there should be no lock contention for a single UDP rx-queue.

Ah, I missed this mail, so you really should post here result of "perf
top -C 0", after you make sure your NIC interrupts are handled by cpu 0.

Also, what speed is your link, and how many UDP messages per second do
you receive ?



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