PHP Possible Memory Leak

Posted by dropson on Stack Overflow See other posts from Stack Overflow or by dropson
Published on 2010-06-17T12:02:47Z Indexed on 2010/06/17 12:13 UTC
Read the original article Hit count: 278

Filed under:

php

|

memory-leaks

|

loops

I have a script that loops through a database for images to convert with gd & imagick.

I unset or replace all variables and objects in between each loop.

For each loop, get_memory_usage(1) reveals a concurrent amount of memory used by that script. Which is expected.

But, when I run "top", the %MEM column reports that this script, (same PID), increments with several percentages for each loop.

I destroy all images when I'm done with them, and when I run get_defined_vars(); only the standard globals and a few variables I have is set.

Why is "top" % Memory Usage different than what PHP reports?

After 10 loops, PHP has taken 20% percetage of the system memory.

I run php 5.2.6 on Debian 5

© Stack Overflow or respective owner

Related posts about php

Magento, NGINX, PHP-FPM, APC, MEMCACHED, 16gb Ram CentOS, Spiking PHP-FPM to 100% CPU

as seen on Server Fault - Search for 'Server Fault'
I have been trying to resolve my issue of spiking cpu caused by php-fpm processes. I've reduced the php-fpm config settings to: pm = ondemand pm.max_children = 12 pm.start_servers = 2 pm.min_spare_servers = 2 pm.max_spare_servers = 10 pm.max_requests = 500 php_admin_value[memory_limit] = 128M Problem… >>> More
PHP Pear Installation on CentOS

as seen on Server Fault - Search for 'Server Fault'
[root@ip ~]# yum install php-pear* Reducing CentOS-5 Testing to included packages only Finished Setting up Install Process Package 1:php-pear-1.8.1-2.el5.centos.noarch already installed and latest versio … >>> More
Apache configurations for php "AddType text/html php" or "AddType application/x-httpd-php php .php"

as seen on Server Fault - Search for 'Server Fault'
I am taking over an application server and discover that it contain the following settings: AddType text/html php Although it works, but my understanding is that it should set as following: AddType application/x-httpd-php php .php What are the key differences between the two settings?… >>> More
mod_rewrite settings causes server to throw HTTP 500 errors instead of 404

as seen on Server Fault - Search for 'Server Fault'
Hello. I have a server with VBulletin forum (working under Apache 2.2, CentOS). The default settings for it in .htaccess are as follows: RewriteEngine on RewriteCond %{HTTP_HOST} ^gsmforum\.ru RewriteRule (.*) http://www.gsmforum.ru/$1 [R=301,L] # If you are having problems or are using VirtualDocumentRoot… >>> More
Problems installing Memcache (PECL extension)

as seen on Server Fault - Search for 'Server Fault'
I have installed memcached fine, and now I will need to install PECL extension memcache. Im running RedHat x86_64 es5. The installation gives me this: downloading memcache-2.2.6.tgz ... Starting to download memcache-2.2.6.tgz (35,957 bytes) ..........done: 35,957 bytes 11 source files, building running:… >>> More

Related posts about memory-leaks

Figuring Out Memory Leaks without Clang

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to see if I can find some leaks myself in Apple's TopSongs app. Can someone help me out in at least one and how to identify what is in the Leaks reports and how I can get an idea on finding them? ie: I got one like this: # Category Event Type Timestamp Address Size Responsible… >>> More
memory (leaks) after executing

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm wondering why randomly after executing the ./a.out I get the following. Any ideas what I'm wrong? Thanks Image link: link text >>> More
Debugging FLEX/AS3 memory leaks

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a pretty big Flex & Papervision3D application that creates and destroys objects continually. It also loads and unloads SWF resource files too. While it's running the SWF slowly consumes memory til about 2GB when it croaks the player. Obviously I am pretty sure I let go of reference to instances… >>> More
What is the best tool to detect memory leaks in Delphi

as seen on Stack Overflow - Search for 'Stack Overflow'
What is the best tool to detect memory leaks. Both free and not Free. Thanks >>> More
Detecting memory leaks using the CrtDbg Library

as seen on Code Project - Search for 'Code Project'
The CrtDbg Library provides APIs which can be used to detect memory leaks. >>> More