topic Re: kernel parameters in Operating System - HP-UX

kernel parameters

Inesa Clinko — Tue, 18 Oct 2005 04:14:29 GMT

I have to equal kernel parameters on 2 hpux-systems: superdome-partition /1/ and rp8700-partition /2/ in order to run equal db and application for test needs. But system /1/ have 64gb ram and system/2/ have 16gb ram. This reflected to kernel parameters insteed. So what if I change all parameters on system/2/ to be equal to system/1/.
Is there any problem, if these parameters are larger than the normal for system/2/?

Re: kernel parameters

GGA — Tue, 18 Oct 2005 04:29:23 GMT

hello
u can do it, but it is possible that ur performance is bad after changing.

look at this link for more:
http://docs.hp.com/en/TKP-90203/index.html

regards gga

Re: kernel parameters

RAC_1 — Tue, 18 Oct 2005 04:32:08 GMT

Certain kernel parameters do depned on how much memeory you have. so equating them is not a good idea.

Re: kernel parameters

Orhan Biyiklioglu — Tue, 18 Oct 2005 04:39:21 GMT

Database vendor recommended kernel parameters mostly depend on the system memory as well. Therefore, check for your database vendors specifications for the parameters.

hth

Re: kernel parameters

AwadheshPandey — Tue, 18 Oct 2005 05:24:14 GMT

this is a poor idea b'coz this gives bad performance

Awadhesh

Re: kernel parameters

Geoff Wild — Tue, 18 Oct 2005 07:33:44 GMT

Some cn - some you shouldn't - this is a depends question....basically - go through the kernel paramaters (kmtune) and compare...

Things like dbc_max_pct and dbc_min_pct should be different - unless you hard set the buffer cache with nbuff

Rgds...Geoff