Compaq DL760 - ProLiant - 1 GB RAM Technology Brief page 13

TC020602TB
T B
ECHNOLOGY RIEF
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Partition Rules
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Resource Partition Rules are used to allocate system resources to partitions dynamically to reduce
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the potential for resource bottlenecks. In Figure 8, a rule has been configured to add processors to
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the EXStore partition if CPU utilization exceeds 70 percent. The configuration shown adds up to
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two processors if utilization on the original six processors exceeds 70 percent for more than 30
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seconds. A rule could also be enabled to remove processors from the partition when utilization
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drops below a certain threshold. Monitoring processor utilization and adjusting these rules could
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provide an optimized solution for each unique environment of applications and hardware.
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T R
E S T E S U L T S
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On a test system, a manual virus scan was run on an Exchange 2000 server with 280 GB of data in
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the information store. The manual scan lasted 8 hours and 54 minutes; overall CPU utilization was
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66.9 percent for all eight processors as recorded by the Windows 2000 performance monitor
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(PerfMon). During the scan, processors 1 through 6, which were assigned to the stor partition,
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averaged 65 percent CPU utilization. Processors 7 and 8, which were assigned to the AVPart
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partition, averaged 85 percent CPU utilization. The same test was performed with both partitions
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disabled and yielded similar results: The scan lasted 8 hours and 50 minutes with overall CPU
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utilization for all eight CPUs at 64 percent. While the performance results are similar, it is
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important to note that if the processes assigned to the AVPart partition had consumed all the
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available CPU resources of processors 7 and 8, there would still have been ample processing
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capabilities available from processors 1 through 6 for the stor partition and the store.exe process.
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13
Microsoft Exchange 2000 Consolidation Using
ProLiant Essentials Workload Management Pack
(cont.)
Figure 8. Partitioning Rules