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Verifying PPU Utilization Information
Appendix B 63
Verifying PPU Utilization Information
Your PPU system/partition’s processor utilization information is
available from the HP PPU web portal. See “PPU Web Portal” on page 36
for details of the PPU web portal.
If you are interested in verifying PPU utilization information against the
PPU web portal information, you can use the sar command to compare
processor utilization numbers. The sar command is a HP-UX system
activity reporter that samples and accumulates processor utilization. See
the manpage sar (1M ) for details on the sar command.
An overview of the processor utilization verification process is:
• Create processor utilization numbers for your PPU system/partition
with the sar command
• Go to the PPU web portal and capture processor utilization numbers
for the same PPU system/partition and duration of time
•Verify the sar utilization numbers against the PPU web portal
utilization numbers
To perform the utilization verification process, perform the following
steps:
NOTE Because the PPU web-portal’s utilization reports contain 30 minutes of
information, beginning on the hour or on the half-hour, it is
recommended to time the execution of
Step 1 (below) immediately upon
the start of a hour, or half past the hour. Another option is to create a
shell script that contains the command in
Step 1 and schedule a cron job
so it starts exactly on the hour or half hour.
Step 1. In a terminal window on the PPU system, execute the following
command:
/usr/bin/nice --10 /usr/sbin/sar -o /tmp/sarOut 300 12
Where “300” represents the (averaged) interval duration of the
utilization sample, in seconds, and “12” represents the number of