Public bug reported:
I noticed that php processes do not free memory after killing scripts
that are running more than allowed by max_execution_time directive.
My setup is lighttpd with php configured as fcgi. Sample script
(requires php-imagick) that can easily hit default 30 seconds time limit
and uses a lot of memory so leaks are easy to notice:
<?php
define('__BASE__', 'images');
$photos = [];
if ($album_root = opendir(__BASE__)) {
while (false !== ($entry = readdir($album_root))) {
if (preg_match('/\.(jpe?g|gif|png)$/i', $entry)) {
$photos[] = $entry;
}
}
closedir($album_root);
sort($photos);
foreach($photos as $photo) {
$thumb = 'thumbs/'.$photo;
if (!file_exists($thumb)) {
$image = new \Imagick(realpath(__BASE__.'/'.$photo));
$image->thumbnailImage(64, 48, true, false);
$image->writeImage($thumb);
$image->clear;
$image = null;
}
}
}
?>
Just put many big JPGs to images directory.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: php7.0-cgi 7.0.15-0ubuntu0.16.04.4
ProcVersionSignature: Ubuntu 4.8.0-45.48~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Thu Mar 30 14:37:16 2017
InstallationDate: Installed on 2011-04-14 (2177 days ago)
InstallationMedia: Ubuntu-Server 10.04.2 LTS "Lucid Lynx" - Release amd64
(20110211.1)
SourcePackage: php7.0
UpgradeStatus: Upgraded to xenial on 2016-07-30 (242 days ago)
** Affects: php7.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1677578
Title:
php-fcgi: max_execution_time causes memory leaks
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