which kernel parameter should be modified?

[leyearn]

max number process exceed 500!

[James R. Ferguson]

Hi:

The 'maxuproc' parameter controls the maxiumum number of processes per user.

On a system-wide basis, 'nproc' sets the upper ceiling for the number of processes on a system.

You can learn more here:

http://www.docs.hp.com/en/TKP-90202/index.html

Regards!

...JRF...

[Raj D.]

Hi Leyearn,

Its maxuprc , that controls Maximum process per user. Also check for nproc parameter. It depends on maxuprc. Hope above posting of JRF is a typo.


To see current value of maxuprc :
# kmtune -q maxuprc

Cheers,
Raj.

[Raj D.]

Hi Leyearn ,

Check this two parameters :

maxuprc and nproc , and increase them accordingly :

----------
maxuprc : maximum number of process that any single user can have running at the same time.

nproc: Defines the maximum number of process that can be running simultaneously on the entire system.
---------------

Cheers,
Raj.

[RAC_1]

It could be maxuprc (max no. of user processes) OR nproc (system wide max. no. of processes)

Real time data can be gathered as follows.
For user - ps -u "user_name" | wc -l
Do that for every user and check maxuprc setting.

For nproc, real time data can be gathered as follows.

glance -t
sar -v 1 6

[Yogeeraj_1]

hi,

before you make your change, note that you can also dynamically monitor your kernel parameter values for:
Proc Table (nproc)
File Table (nfile)
Shared Mem Table (shmmn
Message Table (msgmni)
Semaphore Table (semmni
File Locks (nflocks)
Pseudo Terminals (npty)
Buffer Headers (nbuf)

using glance in SYSTEM TABLES REPORT

Note that this parameter change will also affect other parameters which are dependent on it. Please check in SAM.

hope this helps!

kind regards
yogeeraj

[Muthukumar_5]

Tune nproc and maxuprc parameters.

# kmtune -q nproc -l
# kmtune -q maxuprc -l

will give details. Tune then kmtune or sam.

--
Muthu

[Sivakumar TS]

Hi,

once you decide the required value,

run

#kmtune -s =

and reboot the server to apply the changes.

Regards,

Siva.

[Patrice Le Guyader]

Hello,

For updating maxuprc you don't have to reboot it's dynamic if you're in 11i, you just have to do this :

kmtune -s maxuprc=
kmtune -u (To update kernel)
kmtune -q maxuprc (To control)

If you don't do kmtune -u it stays at planned state.
What I use to do is to have the parameter nproc 2 or 3 times maxuprc, because if you have an application which lost head the others are still happy. I hope it's a good practice. :-)

Regards
Pat