Hardware and performance

Issues related to computer hardware and Moodle's performance under load.

Documentation: Performance and Performance FAQ
Forum moderator: Howard Miller

Read this first!

This forum is for discussing issues related to computer hardware for Moodle, as well as comparing notes on Moodle's performance under load. Advice on finding an internet hosting service also belongs here.

Before posting your question here please read the documentation Performance and and Performance FAQ.

Many of the questions have already been answered. Please make use of the Advanced forum search and the Google custom search to find them.

If your questions still remain unanswered, post them here. Include as much background information as possible about your hardware - operating system, web server, database server, PHP scripting framework, etc. If your machine is virtualized, also mention the host hardware, operating system, virtualization technology used and resources assigned to the virtual machine. If you use a hosting service, mention either the hosting provider and the package or resources as advertised.

For general advice on how to ask questions, refer to the Moodle.org forums help. Also please observe our site policy.

Best wishes,
your moderator Howard.

Showing 100 of 2668 discussions
  Discussion Started by Replies Last post Created  
Error on Moodle
Picture of Luis Yovany Romo Portilla Luis Yovany Romo Portilla
1 Tue, Oct 28, 2014, 10:06 PM
20 Concurrent users - 4GB SLOW
Picture of hernani moodle hernani moodle
12 Fri, Oct 10, 2014, 5:33 PM
Table Locking?
Picture of Andy Byers Andy Byers
9 Fri, Jul 5, 2013, 11:51 PM
mdl_logstore_standard_log 35 million rows
Picture of Danny Wahl Danny Wahl
6 Mon, Oct 20, 2014, 11:53 AM
Moodle on Synology Diskstation
Picture of Jonathon Hike Jonathon Hike
8 Sat, Oct 18, 2014, 12:14 AM
Logging User Interactions Slowing Moodle?
Picture of Carolyn Hodgman Carolyn Hodgman
1 Fri, Oct 17, 2014, 7:28 PM
more than Max Number of concurrent users
Picture of Colin Peters Colin Peters
26 Wed, Oct 15, 2014, 7:28 AM
Server crashes at +20 concurrent users
Picture of Fabulous Phil Fabulous Phil
6 Fri, Oct 10, 2014, 5:43 PM
Slow page loads
Picture of john allen john allen
6 Tue, Oct 7, 2014, 3:46 PM
My IP blocks when adding scorm package
Picture of amir ghasemiyan amir ghasemiyan
4 Mon, Oct 13, 2014, 5:24 PM
5 seconds for output. Slowly load
Picture of Alessandro Baccanelli Alessandro Baccanelli
9 Sun, Sep 21, 2014, 2:40 AM
Moodle 2.7 performance and styles_debug.php
Picture of Alan Kmiecik Alan Kmiecik
3 Wed, Oct 8, 2014, 9:06 AM
Proposal to turn on quiz auto-save by default
Picture of Tim Hunt Tim Hunt
0 Tue, Oct 7, 2014, 6:23 AM
How many clients can access to my site in one time?
Picture of Uugankhuu Baasanjav Uugankhuu Baasanjav
7 Mon, Sep 29, 2014, 12:10 PM
hardware required for 500 concurrent users in aws
Picture of Trilok Veeranki Trilok Veeranki
0 Thu, Oct 2, 2014, 2:18 PM
Coral CDN for distributing the loading of video files?
Picture of Jean Jones Grey Jean Jones Grey
5 Thu, Oct 2, 2014, 1:37 AM
Moodle Multi-tenancy or hosting multiple Moodle sites
Picture of Mari Cruz García Mari Cruz García
19 Thu, Sep 11, 2014, 11:20 PM
URL site redirection
Picture of Genner Cerna Genner Cerna
9 Sun, Feb 29, 2004, 1:15 PM
Can Moodle run as distributed?
Picture of Jean Jones Grey Jean Jones Grey
1 Tue, Sep 30, 2014, 7:03 AM
Mem Cache
Picture of john allen john allen
3 Mon, Sep 29, 2014, 6:31 PM
mod_fcgid: error reading data from FastCGI server
Picture of Filippo Carnevali Filippo Carnevali
0 Fri, Sep 26, 2014, 6:45 PM
Linux box (discussion split from The problem with Canvas)
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
9 Mon, Sep 22, 2014, 2:29 AM
If anyone else having performance problems with Locally assigned roles
Picture of Tim Hunt Tim Hunt
0 Thu, Sep 25, 2014, 11:29 PM
Is Opcache enough the improve performance of a Moodle 2.6 site?
Picture of Mari Cruz García Mari Cruz García
0 Thu, Sep 25, 2014, 10:28 PM
Hardware estimate for 10000+ users
Picture of Venkatarathna T V Venkatarathna T V
4 Fri, Sep 5, 2014, 5:38 PM
Session handling: db vs moodledata clarification needed
Picture of Matthew Goral Matthew Goral
10 Thu, Aug 21, 2014, 11:45 PM
Performance issue
Picture of Jacqui C Jacqui C
1 Wed, Sep 24, 2014, 12:01 PM
Moodle consuming all server's CPU - Unusually large mdl_questions table
Picture of Ivan Olivero Ivan Olivero
5 Sat, Sep 20, 2014, 5:56 AM
Quiz Question Format
Picture of Michael "doc" Crawford Michael "doc" Crawford
1 Tue, Sep 23, 2014, 1:27 PM
memcache slow?
Picture of Rikard E Rikard E
7 Thu, Sep 18, 2014, 10:26 PM
Performance issues with course overview + memcached
Picture of Ellio Mourinho Ellio Mourinho
8 Fri, Sep 5, 2014, 2:04 AM
Problem with Google SSO
Picture of amarnath Kamepalli amarnath Kamepalli
0 Thu, Sep 18, 2014, 11:19 PM
Slow moodle (2.5.2) hosting ourselves on WIndows
Picture of john allen john allen
2 Wed, Sep 17, 2014, 5:33 PM
Moodle Universal Cache, filesystem available space, designer mode
Picture of Peter Kehl Peter Kehl
1 Wed, Sep 17, 2014, 7:22 AM
Moodle Universal Cache, tmpfs, theme designer mode
Picture of Peter Kehl Peter Kehl
1 Tue, Sep 16, 2014, 3:34 PM
ERROR!!! The code you are using is OLDER after change database
Picture of reza budi ryanzah reza budi ryanzah
1 Tue, Sep 16, 2014, 12:50 PM
Changing session.save_path
Picture of m M m M
2 Wed, Aug 21, 2013, 10:27 PM
Settings for Moodle Drag and Drop
Picture of Mark Chaney Mark Chaney
3 Mon, Sep 1, 2014, 7:58 PM
More on the previous posting. Problems uploading File resource in 2.7
Picture of Gary Lebowitz Gary Lebowitz
2 Fri, Sep 5, 2014, 12:26 PM
Moodle 2.7 running on virtual server with 1Gbyte RAM
Picture of Gary Lebowitz Gary Lebowitz
0 Fri, Sep 5, 2014, 11:36 AM
is MySQL 5.5 Ok for Moodle 1.9
Picture of Bernat Martinez Bernat Martinez
6 Wed, Sep 3, 2014, 2:21 PM
Slow moodle 2.7 on update
Picture of Nathan Friend Nathan Friend
7 Mon, Sep 1, 2014, 3:46 PM
Hardware Requirements for Moodle 2.7
Picture of Ramit Kumar Ramit Kumar
3 Thu, Aug 28, 2014, 11:33 AM
Ubuntu server partitioning and Moodle 2.7 recommendations
Picture of Rick Sparrow Rick Sparrow
1 Thu, Aug 28, 2014, 11:52 PM
Open in new window Scorm loads but does not open
Picture of Ricardo Plácido Ricardo Plácido
0 Fri, Aug 29, 2014, 1:36 AM
OPTIMIZE does not change fragmentation
Picture of Nathan Bruley Nathan Bruley
48 Thu, Aug 14, 2014, 10:24 PM
Moodle networking as solution for performance problems
Picture of Kristina Ban Kristina Ban
4 Tue, Aug 26, 2014, 7:36 PM
Single Sign On for different Moodle instances
Picture of Kristina Ban Kristina Ban
0 Wed, Aug 27, 2014, 11:02 PM
Moodle 2.7 Theme Cache not working?
Picture of Janet Smith Janet Smith
1 Sat, Aug 23, 2014, 12:19 AM
How do you monitor your Moodle server?
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
23 Mon, Dec 12, 2011, 10:09 PM
Cron job is endlessly editing calendar in specific restored courses
Picture of Michael Deal Michael Deal
11 Fri, Aug 8, 2014, 11:55 AM
Using X-Sendfile to serve files in Moodle
Picture of Andrew Nicols Andrew Nicols
6 Wed, Dec 5, 2012, 7:58 PM
Links not working Moodle 2.71
Picture of john Simpson john Simpson
2 Mon, Aug 18, 2014, 10:55 PM
Deleting course slow??
Picture of Judy Hsu Judy Hsu
1 Thu, Aug 21, 2014, 4:31 AM
Profile specific pages with XHProf
Picture of Nathan Bruley Nathan Bruley
2 Thu, Aug 14, 2014, 11:41 PM
Apache CPU usage shoots to >= 100%. Why?
Picture of Brad Smith Brad Smith
12 Mon, Jul 28, 2014, 9:37 PM
Slow logins and page/video/SCORM quiz loads
Picture of Daniel Williams Daniel Williams
25 Fri, Aug 1, 2014, 4:22 AM
Connection drop issues
Picture of Nathan Bruley Nathan Bruley
7 Sat, Jul 26, 2014, 6:04 AM
storage size
Picture of m question m question
1 Tue, Aug 5, 2014, 6:53 PM
Installation of xhprof
Picture of Nathan Bruley Nathan Bruley
4 Fri, Aug 1, 2014, 5:20 AM
JMeter Scripts
Picture of Ben Steeples Ben Steeples
51 Mon, Mar 23, 2009, 10:19 PM
Moodle randomly logging users out on AWS
Picture of Wathsala Werapitiya Wathsala Werapitiya
10 Wed, Jul 9, 2014, 6:37 PM
PHP 5.4 and Suse Linux Problems
Picture of Graham Stone Graham Stone
6 Mon, Jul 14, 2014, 6:49 PM
Server specification for 18000 users moodle site
Picture of Dr. Amitkumar Mali Dr. Amitkumar Mali
12 Mon, Jul 21, 2014, 5:26 PM
Disable cron emails
Picture of Nathan Bruley Nathan Bruley
4 Tue, Jul 15, 2014, 10:34 PM
Timeout problems?
Picture of Nathan Bruley Nathan Bruley
6 Fri, Jun 20, 2014, 8:55 PM
Move away from eaccelerator for your opcode cache needs
Picture of Dan Poltawski Dan Poltawski
3 Wed, May 1, 2013, 6:24 PM
posqresql update
Picture of joel Green joel Green
0 Wed, Jul 16, 2014, 5:28 PM
2.6, MUC and Memcache
Picture of James McLean James McLean
6 Tue, Jul 8, 2014, 9:59 AM
Alert pops up while playing SCORM
Picture of Erwin Ancheta Erwin Ancheta
1 Tue, Jul 8, 2014, 2:57 PM
filedir folder gaining 7GB in 3 days
Picture of Adrian Garden Adrian Garden
3 Thu, Jun 5, 2014, 5:51 PM
CloudFlare
Picture of James Brown James Brown
9 Tue, May 20, 2014, 10:27 AM
Troubleshooting performance : what does the following mean : ticks: 69 user: 52 sys: 3 cuser: 0 csys: 0 ?
Picture of Mireille Raad Mireille Raad
14 Mon, May 31, 2010, 7:35 PM
installing an enroll plugin. dependancy problem.
Picture of john Simpson john Simpson
6 Mon, Jul 7, 2014, 8:25 PM
Problems with MongoDB for application cache?
Picture of Colin Campbell Colin Campbell
0 Sun, Jul 6, 2014, 1:15 AM
MYSQL to ORACLE
Picture of Freddie Batista Freddie Batista
3 Wed, Jul 2, 2014, 4:54 AM
Massive forum emissions solution ?
Picture of Valery Fremaux Valery Fremaux
6 Fri, Jan 3, 2014, 7:39 PM
Internet & internet access to a single Moodle
Picture of Ali Hastie Ali Hastie
10 Fri, Mar 17, 2006, 12:01 AM
Legacy Files
Picture of Angela Tarver Angela Tarver
2 Fri, Jun 27, 2014, 9:31 PM
Strength and load test of server for Moodle
Picture of Molin Men Molin Men
1 Thu, Jun 26, 2014, 11:01 PM
Moodle 2.6 amb Memcached for sessions
Picture of Antonio Piedras Antonio Piedras
9 Wed, May 14, 2014, 8:16 PM
Moodle 2.5 Lag
Picture of Andrew Leer Andrew Leer
1 Mon, Jun 23, 2014, 8:30 PM
Moodle arquitecture - AWS
Picture of Julian Agudelo Julian Agudelo
10 Sat, Aug 17, 2013, 4:25 AM
Caching documentation (at last!)
Picture of Howard Miller Howard Miller
2 Thu, Jun 12, 2014, 4:44 PM
Drag and Drop lag
Picture of Acs Gabor Acs Gabor
0 Thu, Jun 19, 2014, 5:25 PM
Loading Lag
Picture of Asish Menon Asish Menon
1 Mon, Jun 16, 2014, 7:29 PM
How many number of users will support
Picture of srikanth raju srikanth raju
2 Sun, Jun 15, 2014, 1:03 AM
finding function
Picture of srikanth raju srikanth raju
0 Fri, Jun 13, 2014, 2:29 AM
Performance testing of Moodle 2.6.1
Picture of CP Lau CP Lau
1 Wed, Jun 11, 2014, 4:14 PM
Maximum number of record in database tables for Windows servers
Picture of Mari Cruz García Mari Cruz García
8 Mon, Jun 9, 2014, 6:38 PM
Moodle 2.6, PHP 5.3 to 5.5 now error?
Picture of Jeff Green Jeff Green
7 Mon, Apr 21, 2014, 12:20 PM
Admin login is very slow
Picture of Karthick Mani Karthick Mani
5 Mon, Jun 2, 2014, 8:04 AM
Scalability far can Moodle be pushed
Picture of Bryan Smith Bryan Smith
11 Fri, May 30, 2014, 2:46 AM
Moodle site gradually slowed now essentially stopped
Picture of Patrick Hallermann Patrick Hallermann
12 Thu, Jan 23, 2014, 5:49 PM
Archiving Media on External Server
Picture of Tyler Paulson Tyler Paulson
3 Mon, Jun 2, 2014, 10:59 PM
Moodle re-install necessary
Picture of Jeff Ratliff Jeff Ratliff
4 Thu, May 29, 2014, 5:17 PM
question about required hardware
Picture of neama ageb neama ageb
6 Wed, May 21, 2014, 2:20 AM
SCORM 1.2 loading slowly on Moodle 2.7 on iPad, on justHost server
Picture of Subramani K Subramani K
7 Thu, May 22, 2014, 4:08 PM
Multiple instances of httpd running
Picture of William Farrugia William Farrugia
1 Mon, May 19, 2014, 3:35 AM
Need help for hosting Moodle 2.6 in my own server
Picture of Krishna Thapa Krishna Thapa
1 Sun, May 18, 2014, 11:10 AM