Hi all!
I'm back again on a system which runs 4000 processes - so the method
below
is OK. (A test "bombardment" of my server withh 1000 clients worked just
fine.)
Bye.
Dilog Mail wrote:
>
> Dilog Mail wrote:
> >
> > I would like to increase the number of processes on a system from the
> > 1024 default and
> > also to increase the number of processes runnable by a user from it's
> > current default.
> > For example, on a KDE system, there are somewhere between 100-130
> > available processes.
> > (I am forking off many child "clients" to bombard a server which I have
> > developed.I cannot
> > seem to create more than about 115 of them at a time. I need to get to
> > several hundred.)
> >
> > How do you do this? (There is a constant, CHILD_MAX in a few places
> > which defaults to 999.
> > Is changing that necessary, sufficient? Is a kernel rebuild needed?
>
> Thanks for the replies!
>
> 1. I specifically did NOT want to use threads, since I want do do some
> of my instrumentation on separate processes.
> 2. The ulimit command is an internal bash command, and is documented in
> my
> favourite O'Reilly bash book. It didn't help.
> 3. Omer's answer, which I will be trying looks best and I append the
> short document to which he refered:
>
> > by Brian King [[EMAIL PROTECTED]] - Apr 15, 2000
> > If your running a large production server under linux, there is a chance that
>you'll run over the maximum number of processes. too
> > increase the number of process in 2.2 and 2.0 kernels, edit
>/usr/include/linux/tasks.h
> > #define NR_TASKS 2560 /* On x86 Max 4092, or 4090 w/APM configured. */
> > modify this line to specify the number of process you want and recompile your
>kernel. If you go over 4092, you will get a compile
> > error, or your kernel won't be able to boot.
> > In the 2.3 and upcoming 2.4 series there is no limit to the number of processes
>available, and can be modified through the file
> > /proc/sys/kernel/threads-max. ie "cat 100000 > /proc/sys/kernel/threads-max"
> >
>
> Well, folks, off I go to do a kernel rebuild.
>
> Thanks all & seeya soon!
>
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