On Mon, Feb 01, 2010 at 07:35:11AM +0200, Gilboa Davara wrote:
Can you post the output of $ mpstat -P 1 ALL during peak load?
We run "mpstat -P 5 ALL" continuously; is this sufficient resolution? I've attached the mpstat output from the 09:30-10:30 yesterday, which is one of the busiest hours of the day for multicast traffic.
~15'000 interrupts/core seems rather high to me - especially considering the fact that this is a 1GbE link. Reducing the InterruptThrottleRate to 1000/5000 while increasing the queue count (ethtool -G ... rx ...) should decrease it.
Oops, forgot to respond to this. The interrupt rate is currently around 4500 intr/s in total (i.e. the sum of intr/s over all cores) under load, which seems normal.
Also, I've attached the dmidecode and lspci output.
- Kelvin