topic Re: 11.23 standard kernel parameter. in Operating System - HP-UX

11.23 standard kernel parameter.

gigiz — Tue, 09 Sep 2008 15:33:04 GMT

Hi guys,
i need of 11.23 kernel parameter (superdome itanium).With 4 cpu and 32Gb Ram.
I need the best parameter for the O.S.(mission Critical)without application.
Many point at any good response...

Re: 11.23 standard kernel parameter.

Patrick Wallek — Tue, 09 Sep 2008 15:37:59 GMT

If you don't have anything but the OS running, then the out-of-the-box kernel parameters should be fine.

The only thing you might change is dbc_max_pct to something like 5, but if nothing is running there isn't much point in changing that either.

Re: 11.23 standard kernel parameter.

James R. Ferguson — Tue, 09 Sep 2008 15:41:06 GMT

Hi:

This would depend on the nature of your workload. The server will certainly run (perhaps not optimally, though) without any tuning.

Regards!

...JRF...

Re: 11.23 standard kernel parameter.

Steven E. Protter — Tue, 09 Sep 2008 15:44:30 GMT

Shalom,

This varies depending on how you use the server.

The standard kctune -l ouptut will show you the current parameters.

General advice:
Take out kernel formulas they are not based on real world scenarios.

I agree that dbc_max_pct should be dropped down to a lower figure. Its a waste of memory unless there is some specific benefit in having the buffer pool at 50%

SEP

Re: 11.23 standard kernel parameter.

gigiz — Mon, 13 Oct 2008 09:11:59 GMT