win32process.beginthreadex allows you to specify the size. However there is almost certainly a better way of doing what you want than creating that many threads, generally using non-blocking operations and an IO Completion Port - what exactly are you doing? I believe the "stackless" prject is all but dead - but that offered "micro-threads" for cases where a huge number of threads were desired and hard to avoid. Mark
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Hughes, Chad O Sent: Thursday, 2 June 2005 10:26 AM To: python-win32@python.org Subject: [python-win32] 1MB Thread Stack Size I have a program that needs to create a great deal of threads. Unfortunately, I cannot seem to find a way to lower the 1MB default stack size per thread. The threading module does not seem to support setting the stack size explicitly. I have 1GB of memory on my system so I can only create about 1000 threads before I receive the following error trace: File "C:\Python24\lib\threading.py", line 442, in __bootstrap self.run() File "C:\Python24\lib\threading.py", line 422, in run self.__target(*self.__args, **self.__kwargs) File "C:\tagent\globalModule.py", line 190, in shell self.target() File "C:\tagent\agent.py", line 132, in runLoop self.timeSliceEvent(currentTime,delta) File "C:\tagent\agent.py", line 397, in timeSliceEvent actorInstance.threadStart() File "C:\tagent\agent.py", line 117, in threadStart threading.Thread.start(self) File "C:\Python24\lib\threading.py", line 416, in start _start_new_thread(self.__bootstrap, ()) error: can't start new thread Any ideas on how to lower the stack size? Chad
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