Very High Sys CPU-Time

[Korn]

Hi,

System: hp-ux 11.00 L-class server with 3cpus and 4gb ram
Software: oracle 8.1.7

vmstat and top shows every 5 min:
user sys idle
CPU 1 99 0

this takes about one minute and then it switch back to normal
user sys idle
10 4 86

during this high sys time the server is very slow! Any suggestions?

Thanks

 

[PCTHUG]

run ps -ef to find what running at the time it drops.

 

[bi]

Check your kernel parameters. Oracle needs some of the parameters to be set fairly high. The Oracle Web site should have a list of parameter suggestions. Let me know if you can't find the list, and I'll try to dig up my old list (which was for 8.1.5, but it might help).

 

[MikeLacey]

Could you run 30 seconds of [tt]vmstat 1[/tt] and post the output please? Mike
michael.j.lacey@ntlworld.com
Email welcome if you're in a hurry or something -- but post in tek-tips as well please, and I will post my reply here as well.

 

[chrisam135]

Bi,

Can you email me the kernel parameter changes for your Oracle 8.1.5 notes you have. I am installing and supporting Oracle 8 and would love to see what you have?
Very appreciated.

thanks,

Chris
chrisam@rocketmail.com