Concurrent searches that utilize large search filters with multiple DN syntax attributes may cause high CPU load

Solution Verified - Updated -

Issue

  • Certain search operations involving the use of large search filters with multiple DN syntax attributes may cause very high CPU usage by the ns-slapd process resulting in very significant delays in query responses and potentially a deadlock situation.

Environment

  • Red Hat Directory Server version 8.2.3 - 8.2.7

  • Red Hat Enterprise Linux 4

  • Red Hat Enterprise Linux 5

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