Re: Maximum number of processes in Linux

From: linux-os (Dick Johnson)
Date: Tue Aug 15 2006 - 15:11:25 EST

On Tue, 15 Aug 2006, Willy Tarreau wrote:

> 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

[SNIPPED bad stuff]

> 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.


#include <stdio.h>
#include <signal.h>
int main()
unsigned long i;
for(i = 0; ; i++)
case 0: // kid
case -1: // Failed
printf("%lu\n", i);
kill(0, SIGTERM);
return 0;

Shows a consistent 6140.

> Regards,
> Willy

Dick Johnson
Penguin : Linux version on an i686 machine (5592.62 BogoMips).
New book:

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