Limit max thread and memory for application in linux kernel 2.4.x

Hi all,
Please help me .
I deverloped a server program in linux 9 kernel 2.4.20. I want my server has high performance. Could you tel me how to increase max thread and memory in my program more than OS default ? My server can support many session so It need run many thread and used much memory.
Thanks for your helps.

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Originally posted by manhvt Hi all, Please help me . I deverloped a server program in linux 9 kernel 2.4.20. I want my server has high performance. Could you tel me how to increase max thread and memory in my program more than OS default ? My server can support many session so It need run many thread and used much memory. Thanks for your helps.

The only real limits are imposed by your architecture. Meaning, on a 32-bit system each process has access to 3G of VM so once the executable and shared libraries are mapped in you have slightly less than that for real use. And I believe the only limit on number of threads is how many processes you can have, probably 32768.

Now some distributions will limit memory usage and number of processes per-user for security reasons, is that what you're running into?

Run 'ulimit -a' to see the currently set limits. Ulimit can be used to change some of these limits, and others are changable via the sysctl interface.

you might want to consider just running a more modern system ??
beyond that
it may be helpfull to change some of the fixed variables in glibc and recompile
i think this is where the thread limit exists
read
http://www.houseoffusion.com/cf_list...threadid:16216

but like said in the beginning my more modern glibc says

#define PTHREAD_THREADS_MAX 16384