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:
Download an example here: http://zeus-1.estara.com/php_mem_leak.zip Previous Comments: ------------------------------------------------------------------------ [2006-06-30 22:03:56] [EMAIL PROTECTED] Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If possible, make the script source available online and provide an URL to it here. Try to avoid embedding huge scripts into the report. ------------------------------------------------------------------------ [2006-06-30 20:43:58] joe at estara dot com So I rewrote the unserialize function in php, and it still is happening. Totally bizare, the leak must be somewhere deeper in PHP. If I make copies of the array using array_merge it doesn't use more memory, but if I unserialize again it uses more memory each time, even in an ALL php version. Please email me if you want example data file. ------------------------------------------------------------------------ [2006-06-30 18:42:39] joe at estara dot com This is not the operating systems fault. This is PHP's fault. It's present in 4.4.0-4 as well. Under debian and fedora core 4. This leaks 800M of ram on a single run. <?php ini_set("memory_limit", "800M"); for($i=0;$i<160; $i++) $s[$i] = file_get_contents("ziplatlong"); for($i=0;$i<160; $i++) preg_match("/foo/", $s[$i]); This uses 800m but immediately returns it to the operating system under both versions and OSs. <?php ini_set("memory_limit", "800M"); for($i=0;$i<260; $i++) $s[$i] = file_get_contents("ziplatlong"); for($i=0;$i<260; $i++) preg_match("/foo/", $s[$i]); I'll email you a zip file so you can easily reproduce this PHP bug. ------------------------------------------------------------------------ [2006-06-28 13:09:32] joe at estara dot com Tony; Why then when I rewrite this to be exactly the same except for the unserialize does it give all the ram back? I've tried this with 6 different methods to grab a bunch of ram, every other method returns the ram on exit. unserialize is the only path with a memory leak. ------------------------------------------------------------------------ [2006-06-28 08:12:52] [EMAIL PROTECTED] PHP releases all the memory taken during the request and it's up to the memory manager used in your OS to decide when to start using it in other processes. Not PHP problem. ------------------------------------------------------------------------ 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
