topic Re: Utilizing Memory Usage in Operating System - HP-UX

Utilizing Memory Usage

Ulama — Fri, 04 Jun 2004 03:24:06 GMT

Dear all,

I'm using rp5405, with progress and symix. I have 8gb of RAM.
Now my aplication and database only using around a half of memory size, but I want to use all of memory size to running my apps and db. How can I do that, does kernel parameter can doing this ? if yes, what parameter should i change ?

thanks for your help.

Best regards,

Otong

Re: Utilizing Memory Usage

Jdamian — Fri, 04 Jun 2004 03:52:17 GMT

Are you sure the system is the cause of whole memory is not used ?

If you are, then some kernel parameters as maxdsiz, maxtsiz, maxssiz, shmmax should be increased.

Re: Utilizing Memory Usage

Stanimir — Fri, 04 Jun 2004 03:57:21 GMT

It is good way to ask your DBA to re-configure his DB-parameters in order
to use 90-95% of free system memory.
Before this - check the exact distribution of your memory using SAM , top or Glance.

Regards.

Re: Utilizing Memory Usage

Johan Lorimier — Fri, 04 Jun 2004 04:02:38 GMT

HI,

In the kernel paramters, check also that the dbc_max_pct is set at about 8-10% (the default value is 50%), or th buffer cache will reserved a huge amount of memory.

Johan

Re: Utilizing Memory Usage

Bharat Katkar — Fri, 04 Jun 2004 04:05:25 GMT

Otong,
You can also have look at buffer size configured and change it as per your requirement.
Regards,

Re: Utilizing Memory Usage

Jan Sladky — Fri, 04 Jun 2004 05:35:50 GMT

Hi Otong,
If you want to know something about shmmax parameter read following link:

br Jan

Re: Utilizing Memory Usage

Jan Sladky — Fri, 04 Jun 2004 05:37:42 GMT

sorry, here is:

http://software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=ShmemExt