IBM E16RMLL-I Implementation Guide - Page 522
Tivoli Storage Manager server performance tracing
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Sleep Thread Wait Other memory and writing the recovery log data. For backup direct to tape, this includes flushing the tape buffers. Sleeping time. Time spent waiting on another thread. Time spent on any other task not mentioned above. If you see a high number here, you should look at the statistics reported by other threads, since this does not necessarily indicate a problem with this particular thread. Please note that the trace facilities can be changed at any time by development without notification. 15.1.3 Tivoli Storage Manager server performance tracing The Tivoli Storage Manager server can collect instrumentation statistics for a period of time. Attention: Using these tracing facilities is done at your own risk. From a performance standpoint, do not activate the trace settings if you are in a stable environment and are not experiencing problems. Trace routines require processing time and could slow down the response times of your workstation applications. If a problem occurs, you can always activate the trace routines to gather trace information for diagnostic purposes. Call your Tivoli Service Representative for assistance in diagnosing Tivoli Storage Manager problems. Tivoli Storage Manager server performance instrumentation shows threads with disk, tape, or network I/O operations during the observation period. To activate performance instrumentation, use the instrumentation begin command, as in Example 15-12. Example 15-12 Start server performance instrumentation tsm> INSTrumentation Begin [Maxthread=number] By default, a maximum number of 1024 threads can be instrumented. To end performance instrumentation, enter the instrumentation end command, as in Example 15-13. Example 15-13 Stop server performance instrumentation tsm> INSTrumentation End > 492 IBM Tivoli Storage Manager Implementation Guide
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