Windows XP w/o any service packs: "OK for 20000 threads - 20 threads running in parallel 1000"
RedHat Linux 9 (on a VPS) was jerkier just a little, but i'm sure it's because of running it thru SSH session:
"OK for 20000 threads - 20 threads running in parallel 1000"
James R. Phillips wrote:
I have been experiencing times when my Webware site at http://zunzun.com will simply stop running, cause unknown. Investigation to date shows that there is some thread problem, which I would like to discuss.
Below is a simple Python program to test multithreading. This program runs smoothly and quickly on my home Windows XP computer as expected. On the Linux server where my site resides, it runs slowly and jerkily, finally ending with the message "Killed". I would like to ask that others please try this program and see how it runs on their computers, this may be why people occasionally report unexplainable WebKit site applications stopping.
If there is a problem with my test code, please let me know. I do not see one and don't know why it runs differently on the two computers I have access to.
James Phillips http://zunzun.com
import os, sys, thread
loopCount = 1000 threadCount = 20 threadsRunning = 1 threadsTotal = 0 t = 0 lock = thread.allocate_lock()
def ThreadTest(): global threadsTotal, threadsRunning, lock lock.acquire() threadsTotal += 1 threadsRunning -= 1 lock.release()
print "Starting new threads" for i in range(loopCount): threadsRunning = threadCount for threads in range(threadCount): thread.start_new(ThreadTest, ())
while threadsRunning > 0: lock.acquire() if threadsTotal != t: print threadsTotal, sys.stdout.flush() t = threadsTotal lock.release()
print print "OK for", threadsTotal, "threads -", threadCount, "threads running in parallel", loopCount print
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