Scaling Up Reporting Services 2008 vs. Reporting Services 2005: Lessons Learned

Microsoft SQL Server 2008 Reporting Services contains many improvements designed to improve performance and capacity. The rearchitecture of the Reporting Services 2008 server as a single server with embedded HTTP capabilities enables Reporting Services 2008 to exercise more control over resource management (thread, memory, and state management) to improve performance and scalability, as well as configurability. The new report engine architecture includes a new on-demand processing model designed to ensure that sufficient memory is always available to execute very large reports and heavy workloads from a large number of concurrent users (by paging and releasing memory in response to memory pressure). Using an early RC0 build (which was not an optimized build), we tested the performance of SQL Server 2008 Reporting Services versus SQL Server 2005 Reporting Services, SP2 (which was optimized) on several scale-up hardware platforms. SQL CAT’s technical note discusses our tests and our learnings.
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