IRQ31 and IRQ32 on HPDL585 running FreeBSD 7.0 are consuming HIGH CPU usage

[Ivan Voras]

Won De Erick wrote:

>      17002  1634   25720672      16423     0    1143508     0     0
>      16943  1643   25629892      16642     0    1160858     0     0
>      16995  1644   25708823      16539     0    1153782     0     0
>      17026  1643   25758462      16606     0    1153342     0     0

What do you use for generating the traffic?

> However, network throughput didn't change in the two scenarios above.
> Is there anything that I can test to improve my network throughput.

I'm not sure but you could maybe try disabling all but one of your CPUs
and see if anything changes. It looks like you have at least 16 CPUs. On
my machine, with 8 CPUs (2xquad core) I get roughly 150,000 PPS before I
hit a similar single-CPU-bound network processing bottleneck (also with
Intel® PRO/1000 PT/Server) - which is too low for my needs so I'm
searching for a solution. In my case I don't see transmission errors.


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