On Tue, Aug 15, 2006 at 02:22:02PM -0400, linux-os (Dick Johnson) wrote:
>
> On Tue, 15 Aug 2006, Irfan Habib wrote:
>
> > Hi,
> >
> > What is the maximum number of process which can run simultaneously in
> > linux? I need to create an application which requires 40,000 threads.
> > I was testing with far fewer numbers than that, I was getting
> > exceptions in pthread_create
> >
> > Regards
> > Irfan
>
> #include <stdio.h>
> int main(){
> unsigned long i;
^^^^^^^^^^^^^^^^
> while(fork() != -1)
> i++;
> printf("%u\n", i);
> return 0;
> }
> $ gcc -o xxx xxx.c
> $ ./xxx
>
> 1251392833 <<---- At least this number
Dick, would you please initialize your local variables when you send
examples like this ? You should have been amazed by one billion processes
on your box, at least.
> 1251392834
> 1251392834
> 1251392834
> 1251392834
> 1251392833
> 1251392833
> 1251392834
> 1251392834
> 1251392834
> ^C
> $ killall xxx
>
> BYW 40,000 threads? 40,000 tasks all sharing the same address space?
> Hopefully this is just a training exercise to see if it's possible.
>
> Cheers,
> Dick Johnson
> Penguin : Linux version 2.6.16.24 on an i686 machine (5592.62 BogoMips).
> New book: http://www.AbominableFirebug.com/
Regards,
Willy
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