topic Re: make kernel in Operating System - HP-UX

make kernel

UniRock — Wed, 18 Jun 2008 12:59:20 GMT

Hi all,
Kindly tell me the procedure of building a new kernel (while changing nfile value) and then set it as a permanent.

My server is 11.23/rx2600.

Thanks in Advance.

Re: make kernel

Mustafa Gulercan — Wed, 18 Jun 2008 13:07:19 GMT

hi;
if you are a new user, you may use sam.
At menu ;
Kernel Configuration>View or modify kernel parameters>mark the nfile parameter and modify it.
regards,
mustafa

Re: make kernel

UniRock — Wed, 18 Jun 2008 13:12:28 GMT

thanks..but i will prefer using CLI.

Re: make kernel

Mustafa Gulercan — Wed, 18 Jun 2008 13:18:24 GMT

hmm..
here is the procedure than.
i've attached.

Re: make kernel

Kenan Erdey — Wed, 18 Jun 2008 13:26:20 GMT

hi,

hope it helps:

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1038287

Kenan.

Re: make kernel

Tim Nelson — Wed, 18 Jun 2008 13:36:27 GMT

kctune nfile=value

Re: make kernel

Don Morris_1 — Wed, 18 Jun 2008 13:37:16 GMT

You don't need to build a new kernel in 11.23.

Just kctune nfile=

It will hold across reboots by default, and since it is a dynamic tunable (man 5 nfile or see http://docs.hp.com/en/B3921-60631/nfile.5.html ) your change will take place immediately.

Note that (as stated in the man page) if you're actually lowering it from the computed default in the kernel such that it is lower than the actual number of open files, the operation can be failed. It must also be equal to or greater than two times the value of maxfiles_lim. [Anyway -- see the man page for all this].