sam limits on kernel parameters

[Lai Nee Shyang_1]

Hi There,

Anyone knows where does SAM keeps its config file for kernel compliation. My Sam keeps telling me that I've exceeded the maxfile and maxfile_lim for my systems' kernel. I remember there is a file somewhere that defines all the tunable kernel parameters.

Thanks


Lai

[Steven Sim Kok Leong]

Hi,

Mind showing us your kmtune command output ie.

# kmtune

This would show us the value you set for the kernel parameter in your currently running kernel.

What value are you trying to change it to?

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

[Frederic Sevestre]

Hi,
If you want to generate a text file based on the current kernel :
# cd /stand/build
# /usr/lbin/sysadm/system_prep -v -s system
The generated file "system" contains all informations about kernel.
Take careful of the extistant "system" file which may not refect the current kernel.
Fr??d??ric

[Marcin Wicinski · Accepted solution]

Hi,
As far as I know maxfile_lim is dynamic tunable and SAM insist on using kmtune -s -u command. You can use command:
# kmtune -s maxfiles_lim=2048
and then kompile a new kernel.

[Lai Nee Shyang_1]

Hi .

I was changing the value for nfile. But strange thing is that, when I triggered SAM-> kernel config, it tells me that the maxfile and maxfile_lim has exceeded the limit, and it automatically changes it from 3000 to 2048 and 5000 to 2048 for maxfile and maxfile_lim respectively.
The nfile limit was ok.

I'm aware that I can do this via changing the systems file in /stand, but just to be in sync with the rest of the adminitrator (I'm not the only administrator), we have choose to use sam to do this instead.

Thanks.

Lai

[Bill McNAMARA_1]

# sysdef

should tell you what you need.

Later,
Bill

[James R. Ferguson]

Hi Lai:

Have a look in '/usr/conf/master.d/core-hpux'. This is one of the master files used by 'config' to build a kernel.

Regards!

...JRF...

[Sanjay_6]

Hi Lai,

Use "kmtune -l" to get the kernel parameter list and also the max and min value for all parameters. Redirect the output to a file to get a text output.

kmtune -l > /tmp/ker_para_list

Hope this helps.

Regds

[Sanjay_6]

Hi Lai,

Here is a procedure for the way on how you can increase the kernel parameter values for maxfile and maxfile_lim beyond the suggested value using sam,

http://us-support.external.hp.com/cki/bin/doc.pl/sid=bbfb456e0453b9553b/screen=ckiDisplayDocument?docId=200000055459688

Hope this helps.

Regds

[Lai Nee Shyang_1]

Hi there

Thanks to all , u guys are great!


Lai