ID: 47640
User updated by: manuel dot schmitt at manitu dot de
Reported By: manuel dot schmitt at manitu dot de
-Status: Feedback
+Status: Open
Bug Type: Session related
Operating System: Linux
PHP Version: 5.2.9
New Comment:
ARGH!
It is so simple!
<?php
session_start();
while (true) { $i *= 2; }
?>
Execute it for the first time and ensure, that it runs into any of the
php limits, e.g. maxmimum execution time.
Call the script a second time while not running into the limit. When
tracing the PHP process you will see an unlimited flock() syscall!
Previous Comments:
------------------------------------------------------------------------
[2009-03-16 23:46:42] [email protected]
You need to come up with a script / set of scripts which can be used
to _reliably_ reproduce the issue.
------------------------------------------------------------------------
[2009-03-16 16:29:03] manuel dot schmitt at manitu dot de
But how should I trace this anymore?
I can strace apache/php processes seeing that there is a PHP script
doing flock() on a file, the process never returns.
What should I do?
------------------------------------------------------------------------
[2009-03-16 16:25:10] [email protected]
I'm actually running also s9y installation in the high traffic
server. Never had any hanging PHP processes. And many times scripts
have run to limits due to database being too slow. Still, no hangups
with sessions. As this is quite impossible to reproduce, please try
and figure out what really causes it. I know it's hard but otherwise
we can keep on guessing and that's pretty useless.
------------------------------------------------------------------------
[2009-03-16 08:07:22] manuel dot schmitt at manitu dot de
E.g. any S9Y installation does reproduce this. I cannot post this here
because it has lots of files.
BUT as I told you I said what I suppose. I suppose that scripts running
into any php limit (e.g. execution time) do not properly close the
session files. It does NOT happen when scripts are correctly finished!
------------------------------------------------------------------------
[2009-03-15 12:19:31] [email protected]
Please provide script(s) that reliably can be used to reproduce this.
I can not reproduce this anywhere (even high traffic sites using
sessions). Just saying something happens does not make it true..
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http://bugs.php.net/47640
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