futex_wait times out too quickly

Solution Unverified - Updated -

Issue

  • futex_wait consistently times out much sooner than it should, often without waiting at all.
  • Increased CPU load, with time spent in %sys, specifically in futex_wait. This is because many applications will immediately retry the futex call when it times out early, so the function gets called many times in fast succession.

Environment

  • Red Hat Enterprise Linux 5.9
  • Red Hat Enterprise Linux 5.10

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