kernel config

[amit singh_3]

Have wanted to change the "maxswapchunks"
kernel parameter.
but after changing the parameter by "kmtune" command it is showing me new value in "planed" field.
after rebooting the system it is still showing the old value, why?

pls reply me.

Amit singh

[Karthik S S]

Hi Amit,

Most of the Kernel parameters require a kernel reconfiguration and a reboot to take effect. Note that you need to reconfigure the kernel before you reboot the system.

Refer,
http://docs.hp.com/hpux/onlinedocs/TKP-90202/TKP-90202.html

kmtune -l will show you if a parameter is static or dynamic (that doesnt require a reboot)

-Karthik S S

[Anita Kelkar]

Hi Amit,
You need to rebuild the kernel using "/usr/sbin/mk_kernel -o /stand/vmunix" .
Once this is done, then reboot the system. You can do all this using "SAM" .


thanks
Anita

[kamal_9]

hi
amit cahnge the value and move the old kernal as vmunix.old nad rebulit the kernal.then you can reboot the machine with new kernal

[amit singh_3]

hey ,

Have allready tried all the things,
after changing the parameter with "kmtune"
it showing me the new value in "planed"
field by "kmtune -l -q" option.
but after rebuilting the kernel it is
showing me the old value only.

thnks for replying me.

Amit singh

[Sanjay Kumar Suri]

You need to do the following before boot:

SAM -->Kernel Configuration --> Configurable Parameters --> Actions --> Apply Tuned Parameter Set

sks