Enterprise Library Test Guide - Willy .Net

222
Enterprise Library Test Guide
Area Performance counter name Threshold
Process (w3wp) Thread Count This value should remain
stable during stress tests. The
thread count of a worker process
should be no more than
75 + ((maxWorkerThreads +
maxIoThreads) * # of CPUs),
where # of CPUs is the value
in the Machine.config file. The
Caching Application Block
uses its own background
scheduler for expiration and
scavenging. The value of this
performance counter should
be constant while the scavenging
and expiration scenarios
are being stress tested.
This means that the scheduler
does not have any memory
leaks.
Process (w3wp) Elapsed Time This performance counter
keeps track of the elapsed
time, in seconds, that the
process has been running. In
other words, it measures an
application block’s availability.
The value should remain constant
during the stress tests.
If the value is less than the
length of the test, an ASP.NET
recycle occurred, which may
indicate a problem.
Memory Pool Paged Bytes This value should be less than
90 MB and remain stable during
stress tests. Larger values
can indicate that the application
block is unnecessarily allocating
system objects, such
as security tokens or thread
handles. The Enterprise
Library uses instrumentation
that allocates unmanaged
handles and performance
counters objects. In particular,
you should monitor this performance
counter during the
Cryptography Application Block
stress tests.