UNIX for Dummies Questions & Answers

Hi all

How to change the system parameter (kernel Parameter)
in sun solaris..i wan't to increase the maximum no of user processs.i found it frm sysdef command that it has a value of 3048

i wan't to increase it as smtime while forking a new proceess it,s giving error max limit of user process reached can not fork a new process.

->If i make a entry in /etc/system
set semsys:seminfo_v.v_proc=8000

WILL IT WORK after a reboot?

IN HPUX we can easily do it from SAM tool.
But i don't know how to in SOLARIS

please suggest .....

try n learn
praful

I was hoping that a Sun expert would show up and tackle this question. But I guess I'll give it a try.

First, yes you modify /etc/system and reboot...no need to build a new kernel, it gets built on the up.

But your syntax looks wrong. We have stuff like:
set semsys:seminfo_semmni= 4096
in our /etc/system. Any values in the seminfo structure are going to support system v semaphores.

On hp-ux, maxuprc is the max processes per user with maybe 50 or 100 being typical values. But on Sun maxuprc is the total processes for all users and it is typically set to NPROC - 5. So while you could bump this up, it wouldn't make sense.

If you are getting "can't fork", you surely want to up NPROC. But, just as with hp-ux, NPROC is a calculated value that rides off MAXUSERS. So my guess is that you want to increase MAXUSERS, which will increase NPROC, NFILE, NINODE, NCALLOUT, and NCLIST all at once.