topic Re: Kernel parameter change , if reboot required? in Operating System - HP-UX

Kernel parameter change , if reboot required?

rveri — Mon, 08 May 2006 22:44:59 GMT

Hi All,

Does increasing this parameters required a reboot:

maxssiz
maxssiz_64bit

Hp-ux version : 11.11

Thanks,

Re: Kernel parameter change , if reboot required?

Warren_9 — Mon, 08 May 2006 22:50:33 GMT

Hi,

both the maxssiz and maxssiz_64 are static... therefore reboot is require to apply the changes.

GOOD LUCK!!

Re: Kernel parameter change , if reboot required?

Arunvijai_4 — Mon, 08 May 2006 22:52:06 GMT

Hi,

Yes, you need to reboot the server. Refer,

http://docs.hp.com/en/TKP-90202/re37.html

Restrictions on Changing

Changes to this tunable take effect at the next reboot.

-Arun

Re: Kernel parameter change , if reboot required?

Warren_9 — Mon, 08 May 2006 22:55:03 GMT

for details, pls reference to the following

http://docs.hp.com/en/TKP-90202/index.html?jumpid=reg_R1002_USEN

Re: Kernel parameter change , if reboot required?

Raj D. — Mon, 08 May 2006 23:41:43 GMT

veri,

Yes , Static parameter. Reboot required.

kmtune -s maxssiz=newvalue
kmtune -s maxssiz_64bit=newvalue

./mk_kernel
kmupdate
shutdown -r -y 0

After reboot check with # kmtune -q maxssiz

Cheers,
Raj.

Re: Kernel parameter change , if reboot required?

Indira Aramandla — Tue, 09 May 2006 00:11:56 GMT

Hi rveri,

Kernel parameters if they are not dynamic, they require reboot.

You can find out if the parameter is Static or Dynamic by using jmtune -q option, to query the value of the specified system parameter.

For eg:-

kmtune -q maxssiz

Parameter Current Dyn Planned Module Version
==============================================================
maxssiz 0x6000000 - 0X6000000

Here you can see the - under Dyn, meaning the parameter is static and not dynamic. If the parameter is dynamic then you will see "Y" under Dyn

Indira A

Re: Kernel parameter change , if reboot required?

rveri — Tue, 09 May 2006 00:48:54 GMT

Thanks everyone.