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kernel tuning issue

 
ln_unix
Frequent Advisor

kernel tuning issue

Kindly guide me for this, i have make the changes on the parameter but problem is looping around the tuning.


khp010a1-root:/root> kctune nkthread=16488
ERROR: The values of maxfiles (10000) and maxfiles_lim (4096) do not
satisfy the requirement:
maxfiles <= maxfiles_lim
khp010a1-root:/root> kctune maxfiles_lim=10000
ERROR: The values of semmnu (16384) and nproc (4200) do not satisfy
the requirement:
nproc >= semmnu + 4
khp010a1-root:/root> kctune nproc=16388
ERROR: The values of nproc (16388) and nkthread (8416) do not satisfy
the requirement:
nkthread >= nproc + 100
khp010a1-root:/root> kctune nkthread=16488
ERROR: The values of maxfiles (10000) and maxfiles_lim (4096) do not
satisfy the requirement:
maxfiles <= maxfiles_lim
5 REPLIES
James R. Ferguson
Acclaimed Contributor

Re: kernel tuning issue

Hi:

Depending on how you performed the 'kctune', you might just reboot (or reboot using the previous kernel configuration).

It seems that you ignored several constraints. It's not good to fool Mother Nature.

Regards!

...JRF...

Re: kernel tuning issue

Have you tried setting all of the values at once?
Or you may have to reduce some of the value before you can increase the others.

Have you tried printing out the values of all of these parms?
Victor Fridyev
Honored Contributor

Re: kernel tuning issue

Hi,

Try to update the parameters in SAM, it has help for each parameter, which has dependencies.

HTH
Entities are not to be multiplied beyond necessity - RTFM
Viktor Balogh
Honored Contributor

Re: kernel tuning issue

Hi,

You will never enforce these values. Configure it with SAM, it will show you the formula and the suggested value.

Regards,
Viktor
****
Unix operates with beer.
vishnu.khandare
Respected Contributor

Re: kernel tuning issue

Hi,
Best practice to change the kernel parameter is to save the old copy of kernel as date_old.
Change the kernel parameters in SAM,
calculate it, before it changes then if the value is correct to set and its dynamic parameters it will be changed, if not it will show u the dependices of other parameter with relation tht greater than or less than equal to particular parameter is depends.

Hope this solves ur query.


Regards
Vishnu Khandare
You should deserve before U desire!!!!