From:
Operating system: Linux 2.6.29.2-smp
PHP version: 5.3.4
Package: Scripting Engine problem
Bug Type: Bug
Bug description:PHP does not return memory to system
Description:
------------
The script shows a huge difference in memory used by PHP and memory claimed
by the process. The memory is only returned to the system by exiting the
process.
A simple function that would return the unused memory to the kernel would
be a great solution.
Disabling gc will only make it worse.
Test script:
---------------
<?php
gc_enable();
for($i = 0; 1000000 > $i; $i++) {
$x = new stdClass();
$x->y = new stdClass();
$x->y->x = $x;
$x->meuk = str_repeat('x', 10000);
}
gc_collect_cycles();
var_dump(memory_get_usage(false));
var_dump(memory_get_usage(true));
?>
Expected result:
----------------
The usage numbers lying closer to eachother.
Actual result:
--------------
int(1816820)
int(25427968)
--
Edit bug report at http://bugs.php.net/bug.php?id=53669&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=53669&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=53669&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=53669&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=53669&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=53669&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=53669&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=53669&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=53669&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=53669&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=53669&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=53669&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=53669&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=53669&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=53669&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53669&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53669&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=53669&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=53669&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=53669&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=53669&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=53669&r=mysqlcfg
