max thread per process in linux

Question

I wrote a simple program to calculate the maximum number of threads that a process can have in linux (Centos 5). here is the code:

int main()
{
    pthread_t         


        

Answer 1

I had also encountered the same problem when my number of threads crosses some threshold. It was because of the user level limit (number of process a user can run at a time) set to 1024 in /etc/security/limits.conf .

so check your /etc/security/limits.conf and look for entry:-

username -/soft/hard -nproc 1024

change it to some larger values to something 100k(requires sudo privileges/root) and it should work for you.

To learn more about security policy ,see http://linux.die.net/man/5/limits.conf.