I have a question regarding interrupt balancing for a NIC across CPUs.
I have a Dell R710 (dual quad core) with embedded broadcom 5709 that
seems to put everything on the CPU0. I even threw an Intel Pro/1000 PT
in the Dell, but this is showing the same problem.
For a test system, I have an HP DL360-G5 (also dual quad core) with
embedded broadcom 5708 that balances across all cores. I've also thrown
in an identical Intel NIC, and it seems to balance across the cores
properly. This leads me to believe that there's something wrong with my
BIOS setup, or there's something inherently wrong with the R710, though
I'm leading towards the former, as I'm seeing this on two R710s, and
doubt I'd hit a magic breakage across two chassis.
Also, this is with no massaging on my part, both running up to date
debian wheezy 7.4, with the Dell being installed originally with 7.1
My question is this, what option(s) could be present with the R710 bios
that would cause something like this to happen? If not the bios,
where/what else should I look at?
Thanks,
-Aaron
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