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Perfmon vs Profiler

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Last Modified: 2012-05-06
I ran a trace on one of our webserver-facing SQL Servers, and counted the "RPC:Completed"* events.  I got an average of 287.5 RPC's/second (290 when I include RPC events not from the web apps).  However, during that same period, I was running a Perfmon log which showed an average of 147.9 BatchRequests/Sec - a ratio of 1.94 of the RPC events to every 1 of the "RPC:Completed" events.

Does anyone know what can account for this difference?  If the RPC's getting "rolled up" into batches somehow, what logic determines how they're being batched?
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SQL Server DBA & Architect, EE Solution Guide
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