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Why is there high CPU usage after inserting the leap second?

Solution Verified - Updated -

Issue

  • After the insertion of the leap second several processes, notably java, were reporting a high CPU usage.
  • Logged messages shows back trace from ktime_get.

Environment

  • Red Hat Enterprise Linux 6 GA
  • Red Hat Enterprise Linux 6.1
  • Red Hat Enterprise Linux 6.2
  • Red Hat Enterprise Linux 6.3

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