I'm using the irqbalance daemon with the following config file. The only thing I've changed is the banned CPUs list, and I've banned all but CPUs #1 and #37. Interrupts *never* go to #1, and go to #18 and #37, even though #18 has also been banned. # irqbalance is a daemon process that distributes interrupts across # CPUS on SMP systems. The default is to rebalance once every 10 # seconds. This is the environment file that is specified to systemd via the # EnvironmentFile key in the service unit file (or via whatever method the init # system you're using has. # # ONESHOT=yes # after starting, wait for a minute, then look at the interrupt # load and balance it once; after balancing exit and do not change # it again. #IRQBALANCE_ONESHOT= # # IRQBALANCE_BANNED_CPUS # 64 bit bitmask which allows you to indicate which cpu's should # be skipped when reblancing irqs. Cpu numbers which have their # corresponding bits set to one in this mask will not have any # irq's assigned to them on rebalance # #IRQBALANCE_BANNED_CPUS= IRQBALANCE_BANNED_CPUS=000000ff,ffffffdf,fffffffd # # IRQBALANCE_ARGS # append any args here to the irqbalance daemon as documented in the man page # #IRQBALANCE_ARGS= Regards, Mohsin On Wed, Nov 18, 2015 at 10:28 AM, Neil Horman <nhorman at tuxdriver.com> wrote: > On Wed, Nov 18, 2015 at 10:04:56AM -0500, Mohsin Zaidi wrote: >> Sorry about that, Neil. >> >> I haven't specified any hint policy in IRQBALANCE_ARGS (for the daemon). >> Regards, >> Mohsin >> > Ok, well, I'm at a bit of a loss. irqbalance, based on your output from the > debug log, is working properly, presuming you actually listed cpus 18 and 37 as > your only unbanned one, which you indicate is the opposite of what you've > configured. > > Can you please send me the command line you use to start irqbalance? > > Neil > >> >> On Wed, Nov 18, 2015 at 6:36 AM, Neil Horman <nhorman at tuxdriver.com> wrote: >> > On Fri, Nov 13, 2015 at 04:39:08PM -0500, Neil Horman wrote: >> >> On Fri, Nov 13, 2015 at 01:39:20PM -0500, Mohsin Zaidi wrote: >> >> > Thanks for your reply, Neil. >> >> > >> >> > Yes, when I manually set the irq affinity to avoid #18, it works. >> >> > >> >> > I just downloaded and applied the latest irqbalance code, but it's >> >> > showing the same behavior. >> >> > >> >> What hint policy are you using? >> >> >> >> Neil >> >> >> > Ping, any response regarding hint policy? >> > >> > Neil >> > >>
