Processor upgrade, performance increase not seen 1

[khhoban]

We recently had IBM install a "2-way" processor in our H50 from a "1-way" processor and a memory upgrade from 1.2GB to 2GB. I anticipated that I would see some increase in performance, but the server seems to be running at the same cpu utilization. I haven't tinkered with anything since the hardware install. Is there anything I need to do inside the OS to increase my performance since this "2-way" processor is installed. Is there a command to show me the usage on each processor? Shouldn't I see some improvement??


Any helpful hints would be appreciated.

 

[bjverzal]

This depends on where the performance bottleneck was. If it is a disk I/O bottleneck, then nothing you just did will fix it. What was your criteria and analysis for justifying the upgrade ?

Thanks, Bill.

 

[Yegolev]

I concur with Bill. IBM should have verified the CPUs were all present and accounted for, anyway. The AIX Performance Guide is a nice little novel full of good info.

 

[avadh]

Hello khhoban,
Why the hardware upgrade was done in the first place.
If the system was cpu bound then processor upgrade helps. If the system is not a cpu bound then cpu upgrade does not help.
ARE you running ORACLE.
1) what application do you run on the machine.
2) sar -P ALL 1 5 will give you output on each processor.
3) Do you have bos.mp fileset installed.
do lslpp -l bos.mp.

 

[Yegolev]

Ah, bos.mp! Good call, avadh!