UDP address lookup in RHEL6 much slower than in RHEL7

Solution Verified - Updated -

Issue

  • UDP address lookup in RHEL6 is noticeable slower than in RHEL7. perf data shows more kernel time spent in the __udp4_lib_lookup function in RHEL6 when compared to RHEL7.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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