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.


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DiscussionStarted byRepliesLast post
slow site admin loading 2 Tod Anderson
Tue, 18 Sep 2012, 4:03 AM
Slow page loading in Moodle 2.3.1? Try this: 1 Visvanath Ratnaweera
Sun, 16 Sep 2012, 3:00 AM
Hardware recommendations for my new moodle hosting 6 Dan Marsden
Tue, 11 Sep 2012, 7:07 AM
no cachetype and rcache option in admin 6 Karen Williams
Mon, 10 Sep 2012, 7:40 PM
Separate MSSQL database server? 2 Visvanath Ratnaweera
Fri, 31 Aug 2012, 11:07 PM
Extremely slow SCORM module performance, pluginfile retrieval, but only on a specific course and courses derived from it 15 Mathew Gancarz
Fri, 31 Aug 2012, 3:21 AM
Upgrading moodle performance - activities and resources deinstallation. 2 Marek Neuman
Thu, 30 Aug 2012, 9:05 PM
moodle on shared hosting - keep killed 1 Frederic Nevers
Thu, 30 Aug 2012, 8:02 PM
Suhosin problem 1 Emma Richardson
Wed, 29 Aug 2012, 5:33 AM
apache hang 2 boke xu
Tue, 28 Aug 2012, 10:05 PM
Moodle developer needed for tablet Moodle 8 Visvanath Ratnaweera
Fri, 24 Aug 2012, 1:41 PM
Advice 2 Gary Moncrieff
Tue, 21 Aug 2012, 4:43 PM
Replication or Clustering 3 Eric Long
Thu, 16 Aug 2012, 3:41 AM
cron.php leads to a very high cpu usage 10 Visvanath Ratnaweera
Sat, 11 Aug 2012, 6:19 PM
load user's picture very slow 17 Shwu-Fen Kuo
Fri, 10 Aug 2012, 9:11 AM
500 concurrent users on vitualization 26 Visvanath Ratnaweera
Wed, 8 Aug 2012, 11:50 PM
Moodle 2.2 on apache working with MS SQL db - problem with restoring the course 4 Gregor McNish
Mon, 6 Aug 2012, 11:17 AM
The longer the day goes it seems to get slower 20 Ken Task
Sun, 5 Aug 2012, 10:41 PM
Clustering test 1 Visvanath Ratnaweera
Wed, 1 Aug 2012, 9:37 PM
Error: Database connection failed after memory used up 6 Visvanath Ratnaweera
Mon, 30 Jul 2012, 2:24 PM
About eAccelerator Cached Scripts 6 AL Rachels
Wed, 18 Jul 2012, 12:46 AM
Browse list of users 1 AL Rachels
Tue, 17 Jul 2012, 6:55 AM
Moodle under-performance 5 Visvanath Ratnaweera
Sun, 8 Jul 2012, 3:49 PM
Easy quick performance boost for Moodle! 3 Visvanath Ratnaweera
Sun, 1 Jul 2012, 8:14 PM
Proposed architecture for Moodle 2.x 16 Andrew Nicols
Wed, 27 Jun 2012, 3:33 PM
Moodle Host Recomendations 10 Sam Mudle
Sat, 23 Jun 2012, 1:09 AM
After upgrading from Moodle 2.2.2 to 2.2.3, the system slowed down 1 Visvanath Ratnaweera
Fri, 22 Jun 2012, 8:26 PM
Recommended Server Hardware: 600 users, Moodle 2.2 1 Visvanath Ratnaweera
Fri, 22 Jun 2012, 8:17 PM
Slow Moodle 16 Richard Jones
Thu, 21 Jun 2012, 8:45 AM
Performance and Stress Testing Questions 9 Cathal O'Riordan
Wed, 20 Jun 2012, 11:28 PM
Slow only for module courses 1 Igor Sant Ana
Wed, 20 Jun 2012, 11:15 PM
Hosting in China for 3000 students 7 stanley wang
Sat, 16 Jun 2012, 8:35 PM
Re: moodle system going down/getting stuck very often (II) 5 Visvanath Ratnaweera
Fri, 1 Jun 2012, 11:34 PM
Hardware Requirement for the moodle 1 Visvanath Ratnaweera
Thu, 31 May 2012, 3:28 PM
bluehost.com 48 Floyd Saner
Tue, 29 May 2012, 8:54 AM
Unbarebly slow 11 Frank B
Wed, 23 May 2012, 11:30 PM
Hosting via Amazon Web Services and the new Elastic Bean Stalk for PHP 5.3 6 Frank B
Wed, 23 May 2012, 3:40 PM
resource caps hit with only one user 4 Michael DeLuca
Sat, 19 May 2012, 7:17 AM
mysql high CPU 3 Alejandro Lengua
Fri, 18 May 2012, 8:30 PM
mdl_log table - how big's yours and how do you manage it? 7 steve miley
Thu, 17 May 2012, 5:00 AM
Mass storage device for MOODLE 1 Visvanath Ratnaweera
Thu, 17 May 2012, 1:06 AM
Possible hostings - Moodle 2.2.2 1 Visvanath Ratnaweera
Thu, 17 May 2012, 12:19 AM
Help!! 10 Visvanath Ratnaweera
Wed, 16 May 2012, 2:02 AM
CPU SERVER 97% 8 Simon Story
Mon, 14 May 2012, 11:48 PM
MySQL queries monitor for Moodle 0 Alexander Holsteinson
Sat, 5 May 2012, 4:54 PM
dynamic multiple servers under load balancer in amazon 1 Grant Mucha
Thu, 3 May 2012, 10:08 AM
strategies for reducing cost of common course query 5 Tim Hunt
Mon, 30 Apr 2012, 5:53 PM
VMWare for Moodle 2.2 6 Visvanath Ratnaweera
Thu, 26 Apr 2012, 1:37 PM
dbperformance.php on innodb 2 Visvanath Ratnaweera
Thu, 26 Apr 2012, 3:11 AM
Slow loading Moodle Course for Admin 4 Grant Mucha
Sat, 21 Apr 2012, 3:34 AM
UnixBench + Provider + Price + Type [Ideal for beginners] 1 Grant Mucha
Thu, 19 Apr 2012, 2:43 AM
Helpful suggestions wanted for New Moodler! 2 Grant Mucha
Mon, 16 Apr 2012, 9:24 PM
Is binary logging required for Moodle 2? 1 Stephen Overall
Mon, 16 Apr 2012, 2:51 AM
Does Moodle 2.0 only run on a dedicated server with the best performance? 2 Grant Mucha
Fri, 13 Apr 2012, 11:35 PM
Benchmarked EC2 / VPS / Dedicated 4 Jason De Donno
Thu, 12 Apr 2012, 4:59 AM
Large Moodle Implementation 3 Grant Mucha
Wed, 11 Apr 2012, 10:36 PM
Advice required for hosting with AWS 10 Grant Mucha
Wed, 11 Apr 2012, 10:04 PM
Problems with cron after upgrading to 2.1.x -> 2.2.x 3 Tim Hunt
Wed, 11 Apr 2012, 4:07 PM
System Requirements: Moodle for 100000+ Students and 10000 simultaneous users 5 Pavel Gonzalez Garcia
Fri, 6 Apr 2012, 8:16 AM
One server for 1000 concurrent user 3 Visvanath Ratnaweera
Sun, 1 Apr 2012, 5:12 PM
Caching and header expires in 1.9 2 Floyd Saner
Thu, 29 Mar 2012, 4:26 PM
Dell PowerEdge T610 for 3000 users 2 Visvanath Ratnaweera
Fri, 23 Mar 2012, 10:05 PM
Latest server for Moodle 2.2+ 2 Chris Megahan
Fri, 23 Mar 2012, 3:53 AM
Moodle 2.0: Servre RAM momery showing full 6 Visvanath Ratnaweera
Wed, 21 Mar 2012, 6:49 PM
"500 Internal Server Error" at some intervals 3 atin kumar
Wed, 21 Mar 2012, 5:05 PM
Preliminery observations for 100 concurrency test 24 Rosario Carcò
Mon, 19 Mar 2012, 11:07 PM
Moodle 2 on cloud ... 3 Saumil Trivedi
Fri, 16 Mar 2012, 12:33 PM
Moodle slow for 2 users only 6 Tim Hunt
Fri, 16 Mar 2012, 4:07 AM
A server that could deal with probably 350 users concurrently. 1 joshua sommermeyer
Sat, 10 Mar 2012, 4:15 AM
new host, help 11 Visvanath Ratnaweera
Wed, 7 Mar 2012, 5:28 PM
Moodle on Amazon Web Services 3 Visvanath Ratnaweera
Wed, 7 Mar 2012, 5:16 PM
Moodle on load balancer and MNet 6 Uwe Böttcher
Thu, 1 Mar 2012, 9:22 PM
Hardware/hosting for 1000 users accessing scorm 6 Visvanath Ratnaweera
Sun, 26 Feb 2012, 7:20 PM
performance testing with apache benchmark and logins 4 Alex DePena
Sat, 25 Feb 2012, 4:58 AM
Could Moodle support a shared nothing architecture? 2 Cathal O'Riordan
Thu, 23 Feb 2012, 7:38 PM
System Requirements: Moodle for 500 Students 11 Visvanath Ratnaweera
Tue, 21 Feb 2012, 3:50 AM
New for tuning: CFG->apachemaxmem for controlling memory footprint 3 Simon Story
Mon, 20 Feb 2012, 10:06 PM
hosting 5 Helen Foster
Sun, 19 Feb 2012, 8:42 PM
Please recommend a suitable web provider. 9 safet guzic
Sun, 19 Feb 2012, 12:15 PM
Anyway to monitor the health of my moodle hosting service? 2 Derek Chirnside
Sun, 19 Feb 2012, 2:19 AM
Cronjob and Moodle response 2 Guillaume Seraglini
Wed, 15 Feb 2012, 4:36 AM
Loading Moodle error 500 and 405 1 Andrew Nicols
Tue, 14 Feb 2012, 7:10 PM
Quiz - MySQL settings 10 Visvanath Ratnaweera
Sat, 11 Feb 2012, 6:43 PM
GoDaddy.com | Moodle 2.1.1 | File Size Increase 2 Chris Collman
Fri, 10 Feb 2012, 12:36 AM
How much concurrent users does moodle support? 5 Andrew Nicols
Wed, 8 Feb 2012, 5:36 PM
my application loading slow 1 Visvanath Ratnaweera
Wed, 8 Feb 2012, 4:44 PM
Questions on hosting and requerments 4 greg mushial
Tue, 7 Feb 2012, 2:19 AM
Moodle host needed 5 Norbert Haag
Sun, 5 Feb 2012, 10:02 PM
PHP and Moodle: Missing Elements 3 Visvanath Ratnaweera
Sat, 4 Feb 2012, 11:49 PM
Where are the cycles going in 2.2 14 sam marshall
Wed, 1 Feb 2012, 7:03 PM
Application monitoring 2 Visvanath Ratnaweera
Tue, 31 Jan 2012, 5:44 AM
zoov.co (they're based in the UK from what I can tell) 2 Ralf Hilgenstock
Mon, 30 Jan 2012, 1:48 AM
Decrease number of database queries per page view - use memcached? 13 David Ackerman
Wed, 25 Jan 2012, 3:04 AM
Moodle runs slow or crashes every day at the same time. 2 Andrew Nicols
Mon, 23 Jan 2012, 11:53 PM
Survey for Moodle system administrators 0 Visvanath Ratnaweera
Sat, 21 Jan 2012, 4:19 PM
How to monitor Windows-based servers? 1 Visvanath Ratnaweera
Sun, 15 Jan 2012, 5:24 AM
Student System Requirements 3 ben reynolds
Sat, 14 Jan 2012, 5:48 AM
Time out for grade export to excel 1 Visvanath Ratnaweera
Fri, 13 Jan 2012, 6:00 PM
Scalability 10 Howard Miller
Thu, 12 Jan 2012, 5:32 PM
Moodle 2.0 - Mysterious Speed-up? 3 Thom Stricklin
Thu, 12 Jan 2012, 2:00 AM
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