[asterisk-dev] How can I set the number of threads? limiting number of threads?

[Min Lee]

Hi,
Asterisk is highly multithreaded application, and I want to set the number 
of threads it's spawning. I couldn't find it in configuration file.
I'd like to limit the number of threads, or make it single-threaded.
How can I limit the number of threads?
Should I build it from source code?
Any help would be appreciated.
Thanks!
Min