High Utilization (cpu) When a Single LDAP Driver is Started

  • 7000463
  • 23-May-2008
  • 26-Apr-2012


Novell Identity Manager 3.5.1
Novell Identity Manager Driver - LDAP
Driver and Engine on SLES 10.1


  • The LDAP driver causes the servers CPU to go to 100% utilization when the driver was started.
  • Only this one LDAP driver caused high CPU utilization
  • The driver was setup to be a Subscriber only driver. All Publisher filter classes and attributes were set to Notify.
  • Polling interval on the driver configuration varied. If set to 2 seconds High Utilization never subsided. If set to 60 seconds then High Utilization would occur for a duration of 10-12 seconds every 60 second interval.


On the driver configuration for the LDAP driver there is a setting called "Publication Method". By defalut this setting is set to "Changelog". Since this driver is a subscriber only driver then changing this setting to "No Publisher" solved the high utilization.