ID: 44942
Comment by: vlabella at uamail dot albany dot edu
Reported By: inqualab1985 at gmail dot com
Status: No Feedback
Bug Type: Program Execution
Operating System: Windows 2000 SP4
PHP Version: 5.2.5
New Comment:
We have been having the same issue for a long time on win2003 with php
version 5.2.X and apache 5.2.x calling both perl scripts and .exe with
the exec fuinction. We found that it mostly happens when php runs exec
concurrently on the same process. For example we would have ajax call
do an exec on the server to read some data and feed it back to the user
every 5 seconds. In addition the user could do an ajax call to do
something as well on this page. if the user call came at the same time
as the schdeduled call then php would hang and we would have to restart
apache. We found it also happens on pages where there are multiple
exec() calls. We find that all the scripts and programs we call run
fine its just that php hangs when they finish for some reason. We have
our max_execution_time set to 30 minutes so its not a timeout issue.
We found that calling
session_write_close();
before each exec call seemed to resolve this issue. But we are not
really sure why and what other effects session_write_close(); may have
on other processes.
Hope this helps resolve this issue. it is a major headache for us for
the past 2 years!!
Previous Comments:
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[2008-08-08 18:55:29] jumpbackhack at gmail dot com
this is still a bug. this is not an apache issue as I have tested
various versions ranging from 2.0.x to 2.2.x
I have tested php v5.2.6 and even a late development version. This
happens on linux OS as well even with shell_exec()
would there be a backtrace on a hang?
it appears that the hang happens after a successful script executes,
the following time the script runs there is the hang. usually lasts 2-5
minutes before it allows apache to run any php again.
note that apache will serve static/html files without issue while any
php files are not called.
even a restart of apache does not resolve.
------------------------------------------------------------------------
[2008-07-22 01:00:01] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
------------------------------------------------------------------------
[2008-07-14 21:14:29] jani@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php
for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php
for Win32
Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.
------------------------------------------------------------------------
[2008-07-09 13:17:48] lk at profline dot ch
I forgot the specifications, we use:
Windows XP
Apache 2.2.8
PHP 5.2.6
Is that an apache or a php related problem ?
------------------------------------------------------------------------
[2008-07-09 13:04:37] lk at profline dot ch
We have got the same problem here, exec hangs sometimes and causes the
page to not respond to anything. Only way is to restart apache. Is there
a solution available for this ?
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the rest of the comments, please view the bug report online at
http://bugs.php.net/44942
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