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Leap second can affect Linux servers

Will leap seconds affect my systems? How can I tell if my systems are affected and what do I do to fix the issue?

avatar image By aaron scheiber 3.7k asked Jul 23, 2012 at 01:03 PM
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Your system could be affected by a leap second if the following are true for your system:

  • Running Red Hat Enterprise Linux 6 (other Linux distributions may be affected as well)

  • Running NTP

  • Running Java

  • Has been up since 6/30/2012 (when the leap second occurred)

An indication that your system is affected is high CPU consumption by qpidd. qpidd would be near the head of the list when you run top.

To work around the leap second issue, run this command as root: date -s now

To verify, check that the qpidd process is no longer in the top listing.

avatar image By aaron scheiber 3.7k answered Jul 23, 2012 at 01:45 PM
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