Symptoms
The RtcpIsLocalServiceCluster function consumes excessive CPU resources in a Microsoft Lync Server 2010 database.
Cause
The issue occurs because lots of stored procedures use a macro that calls the RtcpIsLocalServiceCluster function.
Resolution
To resolve this issue, install the following cumulative update:
2571545 Description of the cumulative update for Lync Server 2010, Core Components: July 2011
