Maximum number of threads
Kirby Angell
kangell at alertra.com
Wed Sep 29 11:26:43 EDT 2004
Michael Fuhr wrote:
> What happens when you hit this "hard limit"? If there's an error
> message then it might hint at the problem.
If I run this program:
import thread, time
def t(parm1,parm2):
time.sleep( 1000 )
tc = 0
try:
while 1:
thread.start_new_thread( t, (None,None) )
tc += 1
time.sleep( 0.05 )
finally:
print tc
This is the result:
$ python t.py
404
Traceback (most recent call last):
File "t.py", line 12, in ?
thread.start_new_thread( t, (None,None) )
thread.error: can't start new thread
> I'm not current on Linux threading models -- do these versions of
> Linux create a new process for each thread? If so, could resource
> limits be preventing you from creating more threads?
I don't think Linux creates a new process for each thread. Sure seems
like this would have to be something related to python since 2.2 could
create a thousand or more threads. Although I have to admit that it is
odd that the maximum number of threads I can create on RH9 is different
than on FC2.
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