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IBM Tivoli Storage Manager Implementation Guide
Data transfer time: 416.28 sec
Network data transfer rate: 1,229.97 KB/sec
Aggregate data transfer rate: 1,216.43 KB/sec
Elapsed processing time: 00:07:03
So now, why did it take so long to restore the object? From the FTP statistics we
know that the network is capable of transferring the file at about the same time in
both directions. We answer the question in the next sections.
15.1.2 Tivoli Storage Manager client performance tracing
The Tivoli Storage Manager client can optionally collect instrumentation statistics
for commands executed.
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 application response times. If a problem
occurs, you can always activate the trace routines to gather trace information for
diagnostic purposes. Call your IBM Service Representative for assistance with
diagnosing Tivoli Storage Manager problems.
The Tivoli Storage Manager client includes client instrumentation procedures
that provide performance instrumentation statistics broken down by threads.
Activating this feature will generate a file that contains the summary statistics.
Tivoli Storage Manager V5.3 and later clients (all except Novell clients) use file
name dsminstr.report.pnnnnn, where nnnnn is the process ID of the dsmc
process. On Novell systems the file name will be just dsminstr.report. The file will
be in the directory set in the DSM_LOG environment variable.
On earlier Tivoli Storage Manager clients, the file name is dsminstr.report, stored
in the client installation directory. Once created, subsequent traces will append to
this file.
The report only shows threads with instrumented activities, and logs only the CLI
client and scheduler, not the GUI. Example 15-9 shows how to enable tracing.
Example 15-9 Client performance tracing
-testflag=instrument:detail
(command line)
testflag=instrument:detail
(options file)
Attention: Using these tracing facilities is done at your own risk.
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