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.
>
Yep....
#include <stdio.h>
#include <signal.h>
int main()
{
unsigned long i;
for(i = 0; ; i++)
{
switch(fork())
{
case 0: // kid
pause();
break;
case -1: // Failed
printf("%lu\n", i);
kill(0, SIGTERM);
exit(0);
default:
break;
}
}
return 0;
}
Shows a consistent 6140.
>
> Regards,
> Willy
>
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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