Re: [Webware-discuss] WebKit thread deaths cause found?

[Winston W. <st...@ob...>]

Another machine that I have access to has problems.  It is running 
python 2.2.2.  It's Linux, some RedHat version I think.  Here's the 
output:

% python threadtest.py
Starting new threads
11

And then it hangs.

-winston

On Oct 16, 2004, at 12:24 PM, Winston Wolff wrote:

> It works well on my machine, Mac OS X 10.3, 800 MHz.  The ending line 
> says:
>
> 	OK for 20000 threads - 20 threads runningin parallel 1000
>
> -ww
>
> On Oct 16, 2004, at 12:08 PM, 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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>
>
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