ID: 37929
User updated by: joe at estara dot com
Reported By: joe at estara dot com
-Status: Feedback
+Status: Open
Bug Type: Apache2 related
Operating System: Linux
PHP Version: 5.1.4, 4.4.0
New Comment:
Fixed in 5.2.0-Dev (though half the time it asks me if I want to
download a blank file which I guess is different bug when it's near the
memory limit?) It allocates more memory in this version but returns it
all to the OS immediately on exit:
<?php
ini_set("memory_limit", "384M");
function make_arr() {
for($i=0; $i<39678; $i++)
$a[sprintf("%05d",$i)] = array(0=> "PHPLEAKS923889239823", 1 =>
"PHPLEAK2349082349898");
return $a;
}
for($i=0;$i<15;$i++)
$zip[$i] = make_arr();
for($i=0;$i<15;$i++)
preg_match("/asdfl/", $zip[$i]["00601"][0]);
echo 'Script Ran<br/><br/>';
?>
Previous Comments:
------------------------------------------------------------------------
[2006-07-20 15:49:39] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5.2-win32-latest.zip
------------------------------------------------------------------------
[2006-07-20 15:40:48] joe at estara dot com
Meant to say if the same apache process is hit, it won't grow higher,
but every apache process that is hit grows to the high level of this
script (`21M, which will swap the machine to death eventually).
It's only this data structure that leaks, if I change it slightly it
doesn't leak, so I'm guessing it's the garbage collector.
------------------------------------------------------------------------
[2006-07-20 15:38:39] joe at estara dot com
Mike:
Please just run this below script on your machine, and then use top,
hit 'M' to sort by memory and apache will be the top memory user. hit
the script 10 times and your machine will start swapping to death.
This appears to be apache related: if the same script is hit, it
doesn't leak MORE memory, it stays at the outrageously high level it
got to the first time.
<?php
ini_set("memory_limit", "64M");
function make_arr() {
for($i=0; $i<396768; $i++)
$a[sprintf("%05d",$i)] = array(0 => "PHPLEAKS923889239823", 1
=>
"PHPLEAK2349082349898");
return $a;
}
for($i=0;$i<10;$i++)
$zip[$i] = make_arr();
for($i=0;$i<10;$i++)
preg_match("/asdfl/", $zip[$i]["00601"][0]);
?>
------------------------------------------------------------------------
[2006-07-20 15:23:40] [EMAIL PROTECTED]
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php
If you can provide more information, feel free to add it
to this bug and change the status back to "Open".
Thank you for your interest in PHP.
Any evidence like valgrind etc?
The OS releases memory when it needs it.
------------------------------------------------------------------------
[2006-07-06 18:27:57] joe at estara dot com
Arrays of arrays leak memory in many PHP versions.
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/37929
--
Edit this bug report at http://bugs.php.net/?id=37929&edit=1
