topic Identifying dynamically tunables in Operating System - HP-UX

Identifying dynamically tunables

Ralph Grothe — Tue, 12 Nov 2002 14:33:07 GMT

Hi,

I need to update the kernel tunable parameter shmmax.

From a box running under HP-UX 11.11 I can see that this parameter seems to be dynamically tunable,
so that I assume I could do something like:

kmtune -s shmmax=

without the need to reboot.

# uname -srv;kmtune -q shmmax
HP-UX B.11.11 U
Parameter Current Dyn Planned Module Version
===============================================================================
shmmax 17179869184 Y 17179869184

Unfortunately I have to increase shmmax on a box that runs HP-UX 11.00.
But there I don't get an indication whether this parameter is dynamically tunable:

HP-UX B.11.00 U
Parameter Value
===============================================================================
shmmax 0X80000000

How can I identify dynamically tunables under HP-UX 11.00?

Regards
Ralph

Re: Identifying dynamically tunables

Chris Wilshaw — Tue, 12 Nov 2002 14:36:25 GMT

I don't believe that feature exists under HP-UX 11.00.

If you look at the kernel parameters in SAM when using HP-UX 11.11, some of the parameters show as "Dynamic"

This is not the case using 11.00

Re: Identifying dynamically tunables

Chris Wilshaw — Tue, 12 Nov 2002 14:37:11 GMT

You can also see this doing a

kmtune -l

- on 11.11, it shows Dynamic with a Yes/No parameter, on 11.00 it does not.