What does the "TCP: time wait bucket table overflow" message mean or what does the TCPTimeWaitOverflow counter indicate?

Solution Verified - Updated -

Issue

  • On a system handling lots of TCP connections, the logs are filled with these messages:

    kernel: TCP: time wait bucket table overflow
    
  • In RHEL7, there is no log message but netstat -s shows a TCPTimeWaitOverflow counter incrementing.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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