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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

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