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Jetstress: Disk sub-system thresholds

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Performance counter thresholds are updated. But, there are some differences from Exchange 2003 Performance Troubleshooting Guide for some reasons.

Database Disks:

· Average Disk sec/Read (or I/O Database Reads Average Latency): The average should be below 20 ms. Spikes (maximum values) should not be higher than 50 ms; more than 6 violations fail the test.

Transactional Log Disks:

· Average Disk sec/Write (or I/O Log Writes Average Latency): The average should be below 10 ms. Spikes (maximum values) should not be higher than 50 ms; more than 6 violations fail the test.

Here are the latest performance counter thresholds: 

Host Computer Thresholds

Performance/Stress

% Processor Time (maximum)

90%

% Processor Time (average)

80%

Available Memory Bytes (minimum)

50 MB

Page Table Entries (minimum)

5000

Transition Pages Repurposed/Sec (average)

100

Memory Pages Per Sec (average)

100

Pool Nonpaged Bytes (maximum)

75 MB

Pool Paged Bytes (maximum)

180 MB

Database Page Fault Stalls Per Sec (average)

1.0

 

Reference: Troubleshooting Exchange Server 2003 Performance

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  • Anonymous
    April 27, 2007
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