Enterprise Library Test Guide - Willy .Net

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Enterprise Library Test Guide
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The elapsed time spent performing garbage collection since the last garbage
collection recycle should be less than 10 percent during stress and performance
tests.
A Gen 2 collection should be one-tenth the value of the number of Gen 1 collections
and a Gen 1 collection should be one-tenth the value of the number of Gen 0
collections.
Where applicable, there should be no SQL Server deadlocks.
Where applicable, the SQL Server Lock Waits/sec performance counter should be
zero.
Where applicable, there should be no SQL Server exceptions.
Table 26 lists the relevant performance counters and their respective thresholds.
Table 26: Performance Counters Used in Performance and Stress Testing
Area Performance counter name Threshold
Processor % Processor Time This value should be close
to 100 percent when the
load simulation saturates the
application block. This usually
happens with 10 virtual
clients because there are no
think times. Any contention
or external dependency may
cause this value to be too
low. For scalability tests, this
metric is used in conjunction
with end-to-end transactions
per second.
Processor % Privileged Time This value should be no
higher than 20 percent to 25
percent.
Process (w3wp) Handle Count This value should remain
stable during stress tests.