I am using SQL Server 2008 R2 Ent. Edition 64 bit reporting services. The source data for report is at remote server and it is SQL Server 2005 Ent. Edition (though I don't think this matters here.) I have set the <WorkingSetMaximum> to 5GB for SSRS
I am testing the performance of report server and running a report with 100K records with 20 concurrent users. All 20 reports gets executed successfully. When I try with 25 or 30 users only 21 reports execute successfully when I see the ExecutionLog table.
I see this exception in the report service log file. Please help.
ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: , Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing. ---> System.ArgumentOutOfRangeException:
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.RemoveReadOnlyMembers(List`1 declarations)
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