Pthreads - High memory usage

Question

I am programming something in C that creates a lot of Pthreads in Linux on a 256Mb system. I usually have +200Mb free.

When I run the program with a low amount of thread

Answer 1

Not sure it will help, but try calling setrlimit with RLIMIT_STACK to limit the stack size to 16k before creating your first thread.