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increase memory size to 10GB

Occasional Contributor

increase memory size to 10GB

Hi Admins,
many thanks to all,
trucluster V5.1A pk1 :
2XES40(4GB on each) machines running OPS,
I increase the physical memory to 10GB (on each),
my question is how can I know the parameters I should to modify to accommodate the new size of memory.
5 REPLIES
Esteemed Contributor

Re: increase memory size to 10GB

Try running sys_check and see what it recommends:

# /usr/sbin/sys_check -all > sys_check.htm

Look at the 'View Warnings' section.

To get the latest version of sys_check:
http://h30097.www3.hp.com/sys_check/

Vic
There are 10 kinds of people, one that understands binary and one that doesn't.
Regular Advisor

Re: increase memory size to 10GB

Hi,

One thing that you should consider is amount of swap. Depending of applications you run, swap size should be 1.5x or 2x of real memory, that is if you have 10GB RAM, swap size should be 15-20GB.

I believe this you'll find after sys_check run...

Regards,
Honored Contributor

Re: increase memory size to 10GB

I wonder if you would 'actually' require so much of swap space. I guess setting the 'swapmode' appropriate would help.
Honored Contributor

Re: increase memory size to 10GB

Hi,

you may want to adjust the maximum shared memory depending on the ability of the oracle version to handle that. Many parameters refer to a percentage of the memory, so more memory also means more memory reserved for that subsystem.
BL, I remember that swapmode should bet set to eager in a cluster environment.

greetings,

Michael
Honored Contributor

Re: increase memory size to 10GB

Check the system configuration and tuning administration manual, there are parameters that depends of the amount of memory, like maxusers, max-proc-data-size, max-proc-address-space, shm-max, etc.

You should center to the section "tuning memory"
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