RHEL MRG Latency Issue - transactions appear to be blocked by hrtimer.

Solution Verified - Updated -

Issue

  • Typically transactions are handled within 15-20 microseconds; however, these are periodically blocked by hrtimer calls for 1-3 milliseconds.

Environment

  • Red Hat Enterprise Linux MRG 2
  • Realtime kernel 3.0.5-rt44.57el6rt.x86_64
  • Non-certified hardware for the Realtime kernel.

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