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SilverStripe Forums » General Questions » Very High Memory Usage

General questions about getting started with SilverStripe that don't fit in any of the categories above.

Moderators: martimiz, Sean, biapar, Willr, Ingo, swaiba, simon_w

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  • swaiba
    Forum Moderator
    1788 Posts

    Very High Memory Usage Link to this post


    Recently we have had some issues with hosting and it has emerged that it is a memory issue from the below process list from the box. Each of the sites is of a varying degree silverstripe written (some in 2.4.0 and well coded, other is 2.3.3 or 2.3.7 and having practically nothing apart form a small site tree and one that is coded rather poorly using mainly mysql_query to do the db work and loads of *html pages). The host is saying what did you do to your sapphire/main.php script and I have explained it is called on every page view and it's purpose varies greatly... but they are not really listening.

    All I can understand from this is that ss across versions can spike at well over 200 meg of memory usage across versions... Has anyone else seen this? What did you do?

    root@stealth [~]# ps auxf | grep 'php'
    538 25133 0.0 1.3 238508 27424 15:41 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 24088 0.0 0.4 245276 10156 15:34 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 25395 0.2 0.5 223320 11536 15:43 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 23794 0.0 0.3 245020 7300 15:32 /home/xxxxxxxx/public_html/sapphire/main.php
    527 23884 0.0 0.8 238380 17860 15:32 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 25394 0.2 0.5 223320 11540 15:43 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 24331 0.0 0.4 244488 9744 15:35 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 23849 0.0 0.3 239520 7004 15:32 /home/xxxxxxxx/public_html/sapphire/main.php
    538 25162 0.0 1.3 238504 27428 15:41 /home/xxxxxxxx/public_html/sapphire/main.php
    504 25092 0.0 1.2 236296 25484 15:41 /home/xxxxxxxx/public_html/sapphire/main.php
    xxxxxxxx 23756 0.0 0.6 240660 12452 15:31 /home/xxxxxxxx/public_html/sapphire/main.php

  • Mad_Clog
    Community Member
    78 Posts

    Re: Very High Memory Usage Link to this post

    Do you have a lot of images in your sites which are dynamically resized? (eg. image galleries)
    GD can be a big memory hog at times...

  • swaiba
    Forum Moderator
    1788 Posts

    Re: Very High Memory Usage Link to this post

    there are no image galleries, but there is a large flash animation on a couple of them - mainly they just have styling (background images of fixed sizes)... I have (at the request of one of the designers)...


    but this is not set in the main culprit of memory hogging.

    Thanks for your suggestion Mad_Clog

  • Mad_Clog
    Community Member
    78 Posts

    Re: Very High Memory Usage Link to this post

    100 is overkill for web usage if you ask me.
    80 should be sufficient.

    But then again, if you don't do any dynamic resizing it won't help a bit...

    Without GD usage I've never run into memory problems, even with a memory_limit of 32MB.
    Sorry I can't be of more help.

  • swaiba
    Forum Moderator
    1788 Posts

    Re: Very High Memory Usage Link to this post

    The really strange thing about this we have (re-enabled) a process killer on the server so that when a php process goes over 64MB it is killed... there are many people using this website constantly throughout the day and with this protection in place they are not noticing any difference...

    This leads me to believe that there is some way a script can kick off and then just sit there hogging up memory... we shouldn't need to kill of these "rouge" processes... has no-one else ever noticed this?

  • swaiba
    Forum Moderator
    1788 Posts

    Re: Very High Memory Usage Link to this post

    first time I've bumped a topic here...

    please can I get some help from the SS team on this - this is a range of ss from 2.3.3 to 2.3.7 and 2.4.0 - I'd open a support ticket as a high priority but I cannot give any more evidence or a way of reproducing it - have you guys at SS ever noticed this?

    If not then I'd be curious to find out more about your recommended host and I'll switch to them to ensure it is nothing in the environment.


  • BigChris
    Community Member
    63 Posts

    Re: Very High Memory Usage Link to this post

    Hi Barry,

    Hope you don't mind me saying the following. There is not enough information from you to really help out at present.

    Can I ask you to post some more details?
    Like, Are the affected sites all on one web server?
    If so what is the Web Server and version that is running?

    What version of PHP is installed?

    My first thought would be given that its across different sites and different versions of SilverStripe, to look at the web server and particularly at PHP. It may be an idea to post your php.ini config settings. Also how much memory does the Server have?

    I realise this may seam like a needle in a haystack.

    Also have you matched up the web server logs to the rogue process times to see what pages where being called when the rogue processes start?


  • swaiba
    Forum Moderator
    1788 Posts

    Re: Very High Memory Usage Link to this post

    Chris - I welcome your advice to improve my post 100% Thank You

    Yes all sites are on one server. The machine, os and php verion and info follow...

    I had not investigated to match one with teh other as I had assumed it was an SS issue that someone might have encountered before - due ito it being with different versions of ss and some of the sites are so mind-boggling simple that it is very unlikely to be any code I have placed on top of it.

    Once again that you for your response... and I'll have a hunt through the serverlogs too...



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    homepage   http://xmlrpc-epi.sourceforge.net
    open sourced by   Epinions.com


    XMLWriter   enabled


    XSL   enabled
    libxslt Version   1.1.26
    libxslt compiled against libxml Version   2.7.6
    EXSLT   enabled
    libexslt Version   1.1.26

    Zend Optimizer

    Optimization Pass 1   enabled
    Optimization Pass 2   enabled
    Optimization Pass 3   enabled
    Optimization Pass 4   enabled
    Optimization Pass 9   enabled
    Zend Loader   enabled
    License Path   no value
    Obfuscation level   3


    Zip   enabled
    Extension Version   $Id: php_zip.c,v 2009/02/05 19:53:22 pajoye Exp $
    Zip version   1.8.11
    Libzip version   0.9.0


    ZLib Support   enabled
    Stream Wrapper support   compress.zlib://
    Stream Filter support   zlib.inflate, zlib.deflate
    Compiled Version   1.2.3
    Linked Version   1.2.3

    Directive   Local Value   Master Value
    zlib.output_compression   Off   Off
    zlib.output_compression_level   -1   -1
    zlib.output_handler   no value   no value

    Additional Modules

    Module Name
    ionCube Loader


    Variable   Value
    DOCUMENT_ROOT   /home/mangoadm/public_html
    HTTP_ACCEPT   application/xml,text/html,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
    HTTP_ACCEPT_CHARSET   ISO-8859-1,utf-8;q=0.7,*;q=0.3
    HTTP_ACCEPT_ENCODING   gzip,deflate,sdch
    HTTP_ACCEPT_LANGUAGE   en-GB,en-US;q=0.8,en;q=0.6
    HTTP_CONNECTION   keep-alive
    HTTP_COOKIE   PastMember=1; PHPSESSID=172b995fa6edfdf1a01eb4196498c36c
    HTTP_USER_AGENT   Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4
    PATH   /bin:/usr/bin
    QUERY_STRING   no value
    REMOTE_PORT   55577
    REQUEST_URI   /phpinfo.php
    SCRIPT_FILENAME   /home/mangoadm/public_html/phpinfo.php
    SCRIPT_NAME   /phpinfo.php
    SERVER_ADMIN   webmaster@mangoadmin.net
    SERVER_PORT   80
    SERVER_SIGNATURE   no value

    PHP Variables

    Variable   Value
    _REQUEST["PastMember"]   1
    _REQUEST["PHPSESSID"]   172b995fa6edfdf1a01eb4196498c36c
    _COOKIE["PastMember"]   1
    _COOKIE["PHPSESSID"]   172b995fa6edfdf1a01eb4196498c36c
    _SERVER["DOCUMENT_ROOT"]   /home/mangoadm/public_html
    _SERVER["HTTP_ACCEPT"]   application/xml,text/html,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
    _SERVER["HTTP_ACCEPT_CHARSET"]   ISO-8859-1,utf-8;q=0.7,*;q=0.3
    _SERVER["HTTP_ACCEPT_ENCODING"]   gzip,deflate,sdch
    _SERVER["HTTP_ACCEPT_LANGUAGE"]   en-GB,en-US;q=0.8,en;q=0.6
    _SERVER["HTTP_CONNECTION"]   keep-alive
    _SERVER["HTTP_COOKIE"]   PastMember=1; PHPSESSID=172b995fa6edfdf1a01eb4196498c36c
    _SERVER["HTTP_USER_AGENT"]   Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4
    _SERVER["PATH"]   /bin:/usr/bin
    _SERVER["QUERY_STRING"]   no value
    _SERVER["REMOTE_PORT"]   55577
    _SERVER["REQUEST_URI"]   /phpinfo.php
    _SERVER["SCRIPT_FILENAME"]   /home/mangoadm/public_html/phpinfo.php
    _SERVER["SCRIPT_NAME"]   /phpinfo.php
    _SERVER["SERVER_ADMIN"]   webmaster@mangoadmin.net
    _SERVER["SERVER_SIGNATURE"]   no value
    _SERVER["PHP_SELF"]   /phpinfo.php
    _SERVER["REQUEST_TIME"]   1280144902
    _SERVER["argc"]   0
    _ENV["DOCUMENT_ROOT"]   /home/mangoadm/public_html
    _ENV["HTTP_ACCEPT"]   application/xml,text/html,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
    _ENV["HTTP_ACCEPT_CHARSET"]   ISO-8859-1,utf-8;q=0.7,*;q=0.3
    _ENV["HTTP_ACCEPT_ENCODING"]   gzip,deflate,sdch
    _ENV["HTTP_ACCEPT_LANGUAGE"]   en-GB,en-US;q=0.8,en;q=0.6
    _ENV["HTTP_CONNECTION"]   keep-alive
    _ENV["HTTP_COOKIE"]   PastMember=1; PHPSESSID=172b995fa6edfdf1a01eb4196498c36c
    _ENV["HTTP_USER_AGENT"]   Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4
    _ENV["PATH"]   /bin:/usr/bin
    _ENV["QUERY_STRING"]   no value
    _ENV["REMOTE_PORT"]   55577
    _ENV["REQUEST_URI"]   /phpinfo.php
    _ENV["SCRIPT_FILENAME"]   /home/mangoadm/public_html/phpinfo.php
    _ENV["SCRIPT_NAME"]   /phpinfo.php
    _ENV["SERVER_ADMIN"]   webmaster@mangoadmin.net
    _ENV["SERVER_PORT"]   80
    _ENV["SERVER_SIGNATURE"]   no value
    _ENV["SERVER_SOFTWARE"]   Apache

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