On 3/26/2014 1:28 PM, Aaron Seelye wrote: > 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?
Please read this for educational background, especially the Note at the bottom of the page. https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Performance_Tuning_Guide/s-cpu-irq.html Then ask an intelligent question about IRQ balancing and steering, WRT the two specific and different hardware systems, and Debian kernel versions, being used on each. Cheers, Stan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/53334a40.8020...@hardwarefreak.com
