The VIOS Performance
Advisor tool provides advisory reports that are based on the key performance
metrics on various partition resources collected from the VIOS environment.
Starting with Virtual I/O Server (VIOS) Version 2.2.2.0,
you can use the VIOS Performance
Advisor tool. Use this tool to provide health reports that have proposals
for making configurational changes to the VIOS environment and to
identify areas to investigate further. On the VIOS command line, enter
the part command to start the VIOS Performance Advisor
tool.
You can start the
VIOS Performance
Advisor tool in the following modes:
- On-demand monitoring mode
- Postprocessing mode
When you start the
VIOS Performance
Advisor tool in the on-demand monitoring mode, provide the duration
for which the tool must monitor the system in minutes. The duration
that you provide must be between 10 - 60 minutes at the end of which
the tool generates the reports. During this time, samples are collected
at regular intervals of 15 seconds. For example, to monitor the system
for 30 minutes and generate a report, enter the following command:
part –i 30
Reports
for the on-demand monitoring mode are successfully generated in the
ic43_120228_06_15_20.tar file.
The output generated by the part command is
saved in a .tar file, which is created in the current working directory.
The naming convention for files in the on-demand monitoring mode is short-hostname_yymmdd_hhmmss.tar.
In the postprocessing mode, the file name is that of the input file
with the file name extension changed from a .nmon file to a .tar file.
When you start the
VIOS Performance
Advisor tool in the postprocessing mode, you must provide a file as
the input. The tool tries to extract as much data as possible from
the file that you provide, and the tool generates reports. If the
file does not have the required data for the tool to generate reports,
an
Insufficient Data message is added to the relevant
fields. For example, to generate a report based on the data available
in the
ic43_120206_1511.nmon file, enter the following
command:
part -f ic43_120206_1511.nmon
Reports
for the postprocessing mode are successfully generated in the
ic43_120206_1511.tar file.
Note: The size of the input file in the postprocessing mode must
be within 100 MB because postprocessing of huge data results in more
time to generate the reports. For example, if the size of a file is
100 MB and the VIOS has
255 disks configured, with more than 4000 samples, it might take 2
minutes to generate the reports.
