Slow I/O performance on a large NUMA system (64 CPUS 4 NUMA nodes) running the software fcoe stack with Intel ixgbe interfaces.

Solution Verified - Updated -

Issue

  • Slow I/O performance on a large NUMA system (64 CPUS 4 NUMA nodes) running the software fcoe stack with Intel ixgbe interfaces. The identical configuration with a single NUMA node and 4 CPUS does not see this issue at all.

Environment

  • Red Hat Enterprise Linux 6
    • ixgbe interfaces using software fcoe stack

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