hello all,
i have run into a problem where i cannot start more than 1021 threads
in a python program, no matter what my ulimit or kernel settings are.
my program crashes with 'thread.error: can't start new thread' when it
tries to start the 1021st thread.
in addition to tweaking my ulimit settings, i have also verified that
the version of glibc i'm using has PTHREAD_THREADS _MAX defined to be
16374. i have posted my test program below as well as the ulimit
settings i was running it with. any help would be greatly appreciated.
thanks in advance,
dan smith
<program>
import os
import sys
import time
import threading
num_threads = int(sys.argv[1])
def run ():
# just sleep
time.sleep(1000 0)
for i in range(1,num_thr eads+1):
print 'starting thread %d' %i
t=threading.Thr ead (None, run)
t.start()
os._exit(1)
</program>
<ulimit -a>
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
max locked memory (kbytes, -l) 4
max memory size (kbytes, -m) unlimited
open files (-n) 1000000
pipe size (512 bytes, -p) 8
stack size (kbytes, -s) unlimited
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
</ulimit -a>
