topic Re: Concern about high kernel parameter request. in Operating System - HP-UX

Concern about high kernel parameter request.

JASH_2 — Wed, 24 May 2006 03:13:43 GMT

Chaps,

I have been requested to apply the following kernel parameters for a third party application
running with oracle. I have recently installed oracle and the parameters they suggested were much lower than this 3rd party.
Do you think I should have concerns about these, or am I just getting worried for nothing.
The server is an rp3440, I have 2 dual core processors (800mhz) and 16gb RAM, the O/S is 11.11, bundled upto 2006 goldpak.

max_thread_proc 20000

maxfiles 20000

maxfiles_lim 20000

maxdsiz 2147483648

maxdsiz_64bit 2147483648

ncallout 40000

nfile 80000

nkthread 30000

nproc 4096

tcp_conn_request_max 2048

shmmax (amount of RAM on server)

Regards,

JASH

Re: Concern about high kernel parameter request.

Chan 007 — Wed, 24 May 2006 03:30:08 GMT

JASH,

Check the link below details of Kernel Paremeters and their min/max value and purpose.

http://docs.hp.com/en/939/KCParms/KCparams.OverviewAll.html

I guess better check their document also once again.

In general these requests are normal and doen't create any problem. Please ensure that you do not have any other application requires a smaller or higher value. that may be a problem

Chan

Re: Concern about high kernel parameter request.

Ninad_1 — Wed, 24 May 2006 03:47:51 GMT

IMHO If the 3rd Party has asked you to set the parameters to this high values then probably you do need to set as per advise because they know best their application.
As far as oracle recommended params being lower should not cause you any problem at all, because all these parameters are limits parameters and having higher limits should not be a problem.

Regards,
Ninad

Re: Concern about high kernel parameter request.

Borislav Perkov — Wed, 24 May 2006 03:50:22 GMT

Hi,
The values are OK, but you should check the reqirements for the other applications which are running on the server, especialy if they need higher kernel parameter values.
regards,
Borislav

Re: Concern about high kernel parameter request.

JASH_2 — Wed, 24 May 2006 03:53:53 GMT

Thanks chaps, my mind is suitably eased, it was just such a vast difference in the settings.

Regards,

JASH

Re: Concern about high kernel parameter request.

Peter Godron — Wed, 24 May 2006 03:54:30 GMT

JASH,
as long as your changes are not less than oracle requires and are within your resource limit, go ahead.
Whoever gave you the parameters would have done their own testing as well.
Must be some application, up to 20000 open files per process!

Re: Concern about high kernel parameter request.

JASH_2 — Wed, 24 May 2006 03:56:51 GMT

Pete,

That is what I was concerned about.

I will give it a go any way.

JASH