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 2642 discussions
  Discussion Started by Replies Last post Created  
Better location for moodledata directory?
Picture of hugo joe hugo joe
1 Tue, Sep 10, 2013, 4:37 PM
local mysql vs remote server
Picture of Yedidia Klein Yedidia Klein
1 Mon, Sep 2, 2013, 4:14 PM
Server suddenly uses all memory resources.
Picture of Arnold Lamont Arnold Lamont
0 Mon, Sep 9, 2013, 5:01 PM
Poor performance on Windows virtual server
Picture of Scott Christy Scott Christy
17 Thu, Aug 1, 2013, 8:55 AM
Super slow site
Picture of Eugene Voevodin Eugene Voevodin
0 Fri, Sep 6, 2013, 3:02 PM
Godaddy: VPS or (which) dedicated?
Picture of Gary Lebowitz Gary Lebowitz
22 Mon, Feb 11, 2013, 9:13 PM
Restoring courses is slow, php settings advice
Picture of Rick Jerz Rick Jerz
7 Fri, Aug 30, 2013, 8:02 PM
Hardware Architecture of Moodle (moodle.org) Site
Picture of Usman Asar Usman Asar
3 Fri, Aug 30, 2013, 1:58 AM
Moodle crash error
Picture of Vic Vicenzi Vic Vicenzi
7 Wed, Aug 28, 2013, 11:58 PM
Moodle-data storage advice needed for SAN
Picture of Albert Ramsbottom Albert Ramsbottom
29 Wed, Jul 24, 2013, 4:56 PM
M 2.5.1, running very, very slow
Picture of Guillermo Madero Guillermo Madero
28 Sat, Aug 3, 2013, 2:40 PM
Performance hit on 2.5 upgrade for admin users
Picture of John Porten John Porten
8 Thu, Jun 20, 2013, 11:09 AM
Moodle 2.5.1 running slow -- with troubleshooting details
Picture of Megan Hayes-Golding Megan Hayes-Golding
6 Fri, Aug 23, 2013, 12:01 AM
how many users with same ip?
Picture of H B H B
9 Fri, Nov 19, 2010, 6:56 PM
Memcache Configuration
Picture of Mark Williams Mark Williams
8 Fri, Aug 16, 2013, 5:54 PM
Large site, VMWare, Advice needed
Picture of heli g heli g
26 Tue, Mar 23, 2010, 9:14 PM
High Load Averages
Picture of Cherie Turek Cherie Turek
2 Sat, Sep 15, 2007, 3:11 AM
My Moodle 2.5.1 is performing very slowly
Picture of Richard Solomon Richard Solomon
2 Sun, Aug 25, 2013, 12:06 AM
Use Drizzle instead of MySQL database
Picture of Ricardo De la Garza Ricardo De la Garza
3 Tue, Mar 30, 2010, 1:15 PM
Moodle causing httpd service to hog CPU
Picture of Ash Roach Ash Roach
0 Thu, Aug 22, 2013, 10:41 PM
new installation for 3000 simultaneous users
Picture of Jose Martin Jose Martin
43 Wed, Jan 16, 2008, 3:37 PM
Moodle work very slow and Apache crash down
Picture of Aurimas J Aurimas J
4 Tue, Aug 20, 2013, 3:48 AM
Size problems: files not cleaned
Picture of David Dunn David Dunn
15 Tue, Aug 13, 2013, 8:01 PM
moodle cachestore_file
Picture of Johan Loubser Johan Loubser
11 Mon, Jul 8, 2013, 5:00 PM
Google Page Speed Insights updated
Picture of David Scotson David Scotson
4 Fri, Aug 2, 2013, 5:10 PM
multi hosting/vps server expert required
Picture of Sarah Jane Sarah Jane
1 Tue, Jul 23, 2013, 2:55 AM
moodle 2.5 performance
Picture of Sanjay Pandey Sanjay Pandey
0 Tue, Aug 6, 2013, 3:02 PM
Moodle 2.51 clean install much slower than Moodle 2.3.2 clean install
Picture of Sam Mudle Sam Mudle
0 Mon, Aug 5, 2013, 3:18 AM
JMeter and Moodle login
Picture of Daniela Dragone Daniela Dragone
2 Tue, Jul 16, 2013, 9:21 PM
Apache JMeter stress test for Moodle Questionaire
Picture of CoreDev Develop CoreDev Develop
4 Wed, Jul 10, 2013, 11:21 AM
Moodle 2.5.1 running slow on any machine I use
Picture of Sergiu Lazarescu Sergiu Lazarescu
0 Thu, Aug 1, 2013, 4:37 PM
Performance issue over WAN
Picture of vedkumar gupta vedkumar gupta
0 Fri, Jul 26, 2013, 8:16 PM
/mod/quiz/view.php progressively slower
Picture of brian shore brian shore
1 Fri, Jul 26, 2013, 4:53 AM
Training deployment in Moodle
Picture of Kaustav Pramanik Kaustav Pramanik
0 Thu, Jul 25, 2013, 1:20 PM
Moodle with clustered DB replication issues
Picture of Rubén Romero Rubén Romero
2 Mon, Jul 22, 2013, 6:38 PM
Help! Cannot log in - error writing to database
Picture of Henry Foster Henry Foster
3 Sun, Jun 30, 2013, 8:07 AM
3 things to do to enhance speed.
Picture of Sarah Jane Sarah Jane
5 Fri, Jun 7, 2013, 6:48 PM
Looking for cheapy host that can support 2.2
Picture of greg mushial greg mushial
11 Sat, Jan 14, 2012, 1:00 AM
Moodle High Availability needed
Picture of Web Developer Web Developer
4 Thu, Jul 11, 2013, 6:54 PM
What is the correct MUC setting for running Moodle 2.4.4+ in a clustering environment?
Picture of CP Lau CP Lau
2 Tue, Jul 2, 2013, 1:51 PM
Moodle Performance Testing in AWS
Picture of Brett Cairns Brett Cairns
5 Thu, Jun 20, 2013, 11:28 PM
Questionnaire is very slow when access by 100 users
Picture of CoreDev Develop CoreDev Develop
4 Wed, Jul 3, 2013, 10:14 AM
Moodle 2.4 Hardware and Performance Optimization
Picture of Brett Cairns Brett Cairns
2 Fri, Jun 28, 2013, 5:17 AM
Hardware requirements for a Moodle-medium size in CenTOS
Picture of Mari Cruz García Mari Cruz García
6 Tue, Jun 25, 2013, 10:47 PM
Moodle very slow or not responding
Picture of Hansruedi (Lori) Lorenz Hansruedi (Lori) Lorenz
17 Sat, Jun 22, 2013, 5:13 PM
Using SPDY with Moodle?
Picture of David Scotson David Scotson
0 Wed, Jun 26, 2013, 6:30 PM
New Server for our VLE
Picture of Jan Grabowski Jan Grabowski
1 Wed, Jun 12, 2013, 6:12 PM
Moodle best Hosting
Picture of Reivaj Daba Reivaj Daba
3 Tue, Apr 15, 2008, 4:04 AM
Moodle 2.4 performance
Picture of Tim Hunt Tim Hunt
10 Fri, May 3, 2013, 3:50 AM
Hardware and Performance
Picture of Junaid Vindhani Junaid Vindhani
0 Mon, Jun 10, 2013, 5:50 PM
Moodle 2.2.2+ & GoDaddy 4GH
Picture of Márton Bacsó Márton Bacsó
14 Thu, Apr 5, 2012, 3:21 PM
Load Balanced and Auto-Scalling with Amazon EC2
Picture of Bobby Kneisel Bobby Kneisel
3 Wed, May 22, 2013, 11:01 PM
Infraestructure to Moodle with 80000 users
Picture of Henrique Brites Henrique Brites
1 Wed, Jun 5, 2013, 5:13 AM
Where to start choosing a server spec for moodle 2.#
Picture of Tom Moseley Tom Moseley
0 Wed, Jun 5, 2013, 3:24 AM
Bulk Answer for Setup
Picture of jason everling jason everling
2 Wed, Apr 24, 2013, 1:41 AM
Profile pictures loads very slow on Moodle 2.2
Picture of Mats Johansson Mats Johansson
2 Wed, May 29, 2013, 7:42 AM
Hardware and Load Balancing Discussion
Picture of Matthew Orlando Matthew Orlando
1 Mon, May 20, 2013, 11:47 PM
Web Server for 100,000 users
Picture of Nir Karniel Nir Karniel
16 Wed, May 22, 2013, 2:20 PM
increasing speed of searching courses
Picture of Vijay N Vijay N
0 Mon, May 20, 2013, 2:30 AM
Databases connection error
Picture of selim aktar khan selim aktar khan
2 Wed, May 15, 2013, 7:55 PM
Problem with Alignment of buttons and quiz module when accessed through Loadbalancer IP
Picture of shrikant gakhare shrikant gakhare
4 Wed, May 8, 2013, 9:39 PM
2.4.3 Performance issues - session locks
Picture of Susan Mangan Susan Mangan
20 Sat, May 4, 2013, 1:16 AM
High CPU wait time
Picture of Corey Brett Corey Brett
3 Wed, May 8, 2013, 10:29 PM
problem with moodle 2, pgpool2 and 2 postgres 9.0
Picture of pablo saldivia pablo saldivia
3 Fri, Apr 26, 2013, 8:04 PM
What Virtual Host Server Do You Use?
Picture of Richard B Richard B
7 Sun, Apr 28, 2013, 3:41 AM
Recommendations needed for improving performance
Picture of cesar correa cesar correa
2 Fri, Apr 26, 2013, 12:32 AM
Poor Performance On Windows (Moodle 2.4.1)
Picture of Andrew Emmett Andrew Emmett
10 Tue, Feb 12, 2013, 10:45 PM
Cron in a Cluster
Picture of R.T. Brown R.T. Brown
3 Fri, Apr 19, 2013, 7:58 PM
Database Overload
Picture of allen haney allen haney
13 Thu, Apr 18, 2013, 12:51 AM
Extreme Size Performance
Picture of Wolf Ventir Wolf Ventir
4 Fri, Mar 29, 2013, 11:21 PM
Cron- slow when manually run, won't work from a scheduled task
Picture of Heather P Heather P
2 Thu, Apr 11, 2013, 10:28 PM
Moodle site sometimes very slow to load and log in
Picture of Alex Greene Alex Greene
3 Wed, Apr 17, 2013, 2:52 AM
Poor performance with Xampp local server (response time = 5")
Picture of vouty - vouty -
6 Thu, Apr 4, 2013, 8:24 PM
Performance of Settings block displaying
Picture of Igor Kazakov Igor Kazakov
2 Mon, Apr 8, 2013, 7:54 PM
Sending forum messages on cron taking far too long
Picture of Jorge Villalon Jorge Villalon
1 Fri, Apr 5, 2013, 9:12 AM
Hardware Requirement
Picture of S Arvind S Arvind
2 Tue, Mar 19, 2013, 1:01 PM
Which organization for keeping a good response time ?
Picture of vouty - vouty -
0 Thu, Apr 4, 2013, 9:48 PM
Hardware for Moodle2.3 for supported 1000 concurrent users
Picture of koe santa koe santa
10 Mon, Apr 1, 2013, 3:56 PM
Moodle 2.4.1 "Timed out while waiting for session lock"
Picture of Dr. Nellie Deutsch Dr. Nellie Deutsch
8 Sat, Mar 2, 2013, 1:10 AM
Further tests using Ylsow +perfdebug
Picture of Mari Cruz García Mari Cruz García
9 Sat, Mar 16, 2013, 12:01 AM
LOADING QUESTIONS: Error writing to database
Picture of john mark almarez john mark almarez
0 Mon, Mar 25, 2013, 9:52 AM
performance: normal load + quiz + grading assignments
Picture of Justin Haaga Justin Haaga
38 Tue, Nov 18, 2008, 8:33 AM
Slow Page loading speed in quiz
Picture of Deepesh Yadav Deepesh Yadav
2 Wed, Mar 20, 2013, 2:53 PM
Moodle Statistics block slowing down moodle
Picture of Tom Moseley Tom Moseley
5 Wed, Feb 20, 2013, 8:41 PM
Moodle 2, pluginfile.php: further performance problems
Picture of Dave Perry Dave Perry
5 Mon, Oct 8, 2012, 11:25 PM
Hardware Requirment
Picture of faizan baig faizan baig
5 Fri, Mar 8, 2013, 5:11 PM
Moodledata in many luns
Picture of Antonio Piedras Antonio Piedras
1 Thu, Mar 14, 2013, 5:21 AM
poor performance for logged in users
Picture of Frank Chmely Frank Chmely
12 Wed, Feb 20, 2013, 2:24 PM
Windows server: I have tried everything to increase its performance
Picture of Mari Cruz García Mari Cruz García
4 Thu, Mar 7, 2013, 6:56 PM
Quick question about FastCGI settings and https
Picture of Mari Cruz García Mari Cruz García
2 Tue, Mar 12, 2013, 11:12 PM
Database Clustering (revisited?)
Picture of Noveck Gowandan Noveck Gowandan
2 Sat, Feb 2, 2013, 3:28 AM
Disable logging
Picture of Mike Algozzine Mike Algozzine
0 Thu, Mar 14, 2013, 2:10 AM
Flash to SCORM in Moodle 2.4.1 (Very Slow)
Picture of Heng Zhang Heng Zhang
13 Wed, Feb 27, 2013, 9:43 AM
Problem with uploading SCORM package to Moodle 2.4.1 platform
Picture of Gary Lebowitz Gary Lebowitz
0 Sat, Mar 9, 2013, 8:56 PM
Caching web pages to enhance performance--where to include directives
Picture of Ashok Harnal Ashok Harnal
9 Sat, Mar 2, 2013, 10:23 PM
Minimum Apache Modules to run Moodle 2
Picture of Michael Haskell Michael Haskell
7 Tue, Jan 15, 2013, 4:49 PM
XHProf (hierarchial profiler for PHP) on Moodle
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
1 Thu, Feb 28, 2013, 8:02 AM
Ease of access of users with low bandwidth/poor computer resources to 1.9.19 vs. 2.4+
Picture of Gary Lebowitz Gary Lebowitz
3 Fri, Mar 1, 2013, 12:04 PM
mdl_cache_text causes the performance bottlement
Picture of CP Lau CP Lau
3 Tue, Feb 5, 2013, 3:03 PM
performance for 2.4 moodle
Picture of Richard Chiha Richard Chiha
1 Tue, Feb 26, 2013, 2:28 PM