High CPU Usage RRS feed

  • Question

  • Try to figure out what is causing high CPU usage on Exchange 2010 daily around 12:30am to 1:00am that causes log not able to catch up, DAG replication errors due to disk can't keep up, and multiple other warnings in eventlog on all our mailbox servers.

    Looking at the mailbox servers,

    Exmon shows multiple mailbox's Bytes Out around 30 - 80MB, Max Server Latency up to 1,200ms.

    TaskMgr shows Store.exe at around 40-50%, msftefd.exe fluctuate between 5 to 35%, replication 5-10%.

    I am assuming msftefd.exe is performing database content indexing?  If so,

      where is the schedule?  

      why would content indexing cause issues with DAG where it reads hundreds of MB/s?  

      isn't there a throttling on it?

    Seems odd...

    • Edited by JT_CP Tuesday, July 12, 2016 4:08 PM
    Tuesday, July 12, 2016 4:07 PM


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