Re: Maximum number of processes in Linux

[linux-os (Dick Johnson)]

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
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/
_


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