High CPU Utilisation with 10.20

[Chetan Rangaraj]

Certain processes such as Visibrokers OAD utilize around 85% of the CPU occassionally on a 9000/889 server with 4 CPUs and running 10.20. This seems completely random and chokes the system. Is there a way to prevent this from occurring?

[Tommy Palo]

What triggers the process ?
It might be possible to apply a "nice" value to the process to make it consume less CPU.

see:
$ man nice

[Paula J Frazer-Campbell]

Hi

I this a new occurance and if so what has changed on you system?

What is the load when this happens? As I have processes that can use 90% plus of a cpu but the load is ok and so users are not slowed down.

High cpu utilisation can be caused for many reasons, whilst nicing down the process will reduce the cpu load it will also increase run time.
Many of the kernal parameters affect the way a programme uses the cpu, things like insufficent swap space can make cpu utilisation increase.

Have a look at swapinfo next time the loading is high, also take a look at:-
http://docs.hp.com/hpux/onlinedocs/os/KCparams.OverviewAll.html
HTH

Paula

[Carlos Fernandez Riera]

Are your filesystems HFS?

See:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x50f4a14d9abcd4118fef0090279cd0f9,00.html