irqbalance not accepting config

Solution Verified - Updated -

Issue

  • I tried each of these configs separately, with the goal of having the kernel put IRQs only on Cores 0 & 1 so I can have application cores that aren’t hit by hardware.
IRQ_AFFINITY_MASK=0xB
IRQBALANCE_BANNED_CPUS=FFFFFFFC
FOLLOW_ISOLCPUS=yes
  • I’m still seeing plenty of updates across all cores.
  • What syntax do I need to use to say "only use cores 0 and 1" on a 4 core box?

Environment

  • Red Hat Enterprise Linux 6.3
  • irqbalance

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