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
MySQL Master-Master Replication 4 jason everling
Wed, 7 Nov 2012, 4:35 AM
requirements 2 Nitharshanaa Shanmuganathan
Fri, 9 Nov 2012, 1:32 AM
Any suggestions for a new server setup? 3 Grant Mucha
Sat, 3 Nov 2012, 6:43 AM
general 2 Nitharshanaa Shanmuganathan
Wed, 7 Nov 2012, 11:38 PM
CAS Browser Looping 4 jason everling
Thu, 25 Oct 2012, 9:56 AM
My "resource use" has spiked 100% after introducing quizzes 4 Sam Mudle
Fri, 2 Nov 2012, 10:33 AM
Extremely Slow 1 Visvanath Ratnaweera
Sun, 4 Nov 2012, 6:38 AM
Configuring Moodle with Apache2 load balancer 3 Matteo Scaramuccia
Fri, 2 Nov 2012, 6:26 PM
Need your advice. 2 Ben S
Thu, 1 Nov 2012, 10:30 PM
High amount of data traffic 5 Daran Price
Fri, 5 Oct 2012, 4:30 PM
Google Bots 1 Chris Meyer
Fri, 26 Oct 2012, 2:11 AM
mod_bwshare setting for moodle 0 Frank B
Thu, 25 Oct 2012, 12:13 AM
Varnish Config 2 dan attwood
Thu, 4 Oct 2012, 4:34 PM
Moodle bandwidth 9 Nitharshanaa Shanmuganathan
Thu, 18 Oct 2012, 6:21 PM
VPS or dedicated Server for Moodle ? 3 Visvanath Ratnaweera
Sat, 13 Oct 2012, 7:18 AM
Quizzes freeze everything up 9 Emma Richardson
Fri, 12 Oct 2012, 7:41 AM
Best Moodle version for Linux Server 2 Visvanath Ratnaweera
Fri, 12 Oct 2012, 2:48 AM
Redhat or SUSE? 32 bit or 64 bit? 6 Visvanath Ratnaweera
Thu, 16 Aug 2012, 12:17 PM
Best Linux distro for Moodle 4 Visvanath Ratnaweera
Thu, 11 Oct 2012, 1:39 AM
Pollyanna question 5 Michael Spall
Thu, 27 Sep 2012, 1:46 PM
Site toooooooo slow 9 Visvanath Ratnaweera
Tue, 9 Oct 2012, 5:12 AM
Further slowdown and incompatability in move from 2.2. to 2.3 16 Visvanath Ratnaweera
Tue, 25 Sep 2012, 9:57 PM
Mac Mini Server 5 Jeffrey Best
Mon, 6 Feb 2012, 3:10 AM
Timeout problems when editing in Moodle 2.2.3 8 Gary Lebowitz
Thu, 27 Sep 2012, 5:26 PM
Database server of Moodle 2.3.1 is a bottleneck 14 Simon Story
Sun, 16 Sep 2012, 11:58 PM
Extra PHP memory limit options 1 Ken Task
Wed, 3 Oct 2012, 4:44 AM
Delay between quiz question pages (how do I eliminate it?) 5 A Guy
Sun, 30 Sep 2012, 1:38 AM
Moodle Performance Test on JMeter 0 Elavarasan MS
Mon, 1 Oct 2012, 3:43 PM
php 100% high utilization 8 Visvanath Ratnaweera
Tue, 25 Sep 2012, 8:31 PM
Slowdown and incompatability in move from 2.2. to 2.3 5 Visvanath Ratnaweera
Sat, 22 Sep 2012, 11:21 AM
Slowdown after 1.9 -> 2.2 migration 2 Tamas Csillag
Thu, 20 Sep 2012, 9:37 PM
Allocating more bandwidth 1 Visvanath Ratnaweera
Fri, 21 Sep 2012, 8:02 PM
Intermittent performance problems 4 Simon Cole
Tue, 18 Sep 2012, 7:54 PM
Slow disk reads with Linux VMs, Moodle 1.9 10 Matt Sharpe
Thu, 13 Sep 2012, 5:11 AM
"MySQL server has gone away" 8 Visvanath Ratnaweera
Mon, 17 Sep 2012, 10:56 PM
slow site admin loading 2 Tod Anderson
Wed, 12 Sep 2012, 1:28 AM
Slow page loading in Moodle 2.3.1? Try this: 1 Visvanath Ratnaweera
Fri, 7 Sep 2012, 2:56 PM
Hardware recommendations for my new moodle hosting 6 Dan Marsden
Mon, 3 Sep 2012, 2:27 PM
no cachetype and rcache option in admin 6 Karen Williams
Sun, 9 Jan 2011, 9:24 PM
Separate MSSQL database server? 2 Visvanath Ratnaweera
Fri, 31 Aug 2012, 5:00 AM
Extremely slow SCORM module performance, pluginfile retrieval, but only on a specific course and courses derived from it 15 Mathew Gancarz
Thu, 16 Aug 2012, 11:28 PM
Upgrading moodle performance - activities and resources deinstallation. 2 Marek Neuman
Thu, 30 Aug 2012, 5:18 PM
moodle on shared hosting - keep killed 1 Frederic Nevers
Wed, 29 Aug 2012, 11:42 AM
Suhosin problem 1 Emma Richardson
Wed, 29 Aug 2012, 4:54 AM
apache hang 2 boke xu
Tue, 28 Aug 2012, 12:18 PM
Moodle developer needed for tablet Moodle 8 Visvanath Ratnaweera
Thu, 23 Aug 2012, 9:54 PM
Advice 2 Gary Moncrieff
Mon, 20 Aug 2012, 9:36 PM
Replication or Clustering 3 Eric Long
Mon, 6 Aug 2012, 1:12 PM
cron.php leads to a very high cpu usage 10 Visvanath Ratnaweera
Wed, 4 Jul 2012, 7:02 PM
load user's picture very slow 17 Shwu-Fen Kuo
Fri, 3 Aug 2012, 11:30 AM
500 concurrent users on vitualization 26 Visvanath Ratnaweera
Thu, 19 Jul 2012, 9:57 PM
Moodle 2.2 on apache working with MS SQL db - problem with restoring the course 4 Gregor McNish
Fri, 3 Feb 2012, 8:00 PM
The longer the day goes it seems to get slower 20 Ken Task
Thu, 2 Aug 2012, 12:30 AM
Clustering test 1 Visvanath Ratnaweera
Sun, 24 Jun 2012, 1:28 PM
Error: Database connection failed after memory used up 6 Visvanath Ratnaweera
Mon, 2 Jul 2012, 8:27 AM
About eAccelerator Cached Scripts 6 AL Rachels
Tue, 22 May 2012, 10:26 AM
Browse list of users 1 AL Rachels
Fri, 13 Jul 2012, 5:18 PM
Moodle under-performance 5 Visvanath Ratnaweera
Tue, 19 Jun 2012, 11:07 PM
Easy quick performance boost for Moodle! 3 Visvanath Ratnaweera
Wed, 11 Apr 2012, 12:20 AM
Proposed architecture for Moodle 2.x 16 Andrew Nicols
Thu, 1 Mar 2012, 6:24 PM
Moodle Host Recomendations 10 Sam Mudle
Fri, 11 May 2012, 7:58 AM
After upgrading from Moodle 2.2.2 to 2.2.3, the system slowed down 1 Visvanath Ratnaweera
Fri, 25 May 2012, 6:11 PM
Recommended Server Hardware: 600 users, Moodle 2.2 1 Visvanath Ratnaweera
Wed, 20 Jun 2012, 8:09 PM
Slow Moodle 16 Richard Jones
Tue, 14 Feb 2012, 9:54 AM
Performance and Stress Testing Questions 9 Cathal O'Riordan
Sat, 9 Jun 2012, 1:01 AM
Slow only for module courses 1 Igor Sant Ana
Wed, 20 Jun 2012, 11:13 PM
Hosting in China for 3000 students 7 stanley wang
Sat, 10 Mar 2012, 9:57 AM
Re: moodle system going down/getting stuck very often (II) 5 Visvanath Ratnaweera
Thu, 31 May 2012, 8:42 AM
Hardware Requirement for the moodle 1 Visvanath Ratnaweera
Wed, 30 May 2012, 11:19 PM
bluehost.com 48 Floyd Saner
Sun, 14 Nov 2004, 3:47 AM
Unbarebly slow 11 Frank B
Sun, 9 Jan 2011, 6:24 AM
Hosting via Amazon Web Services and the new Elastic Bean Stalk for PHP 5.3 6 Frank B
Fri, 23 Mar 2012, 12:32 AM
resource caps hit with only one user 4 Michael DeLuca
Fri, 19 Aug 2011, 7:11 PM
mysql high CPU 3 Alejandro Lengua
Tue, 27 Sep 2011, 11:22 PM
mdl_log table - how big's yours and how do you manage it? 7 steve miley
Tue, 5 Apr 2011, 9:42 PM
Mass storage device for MOODLE 1 Visvanath Ratnaweera
Wed, 16 May 2012, 7:31 PM
Possible hostings - Moodle 2.2.2 1 Visvanath Ratnaweera
Wed, 16 May 2012, 7:08 PM
Help!! 10 Visvanath Ratnaweera
Tue, 15 May 2012, 1:58 AM
CPU SERVER 97% 8 Simon Story
Fri, 11 May 2012, 11:33 PM
MySQL queries monitor for Moodle 0 Alexander Holsteinson
Sat, 5 May 2012, 1:16 AM
dynamic multiple servers under load balancer in amazon 1 Grant Mucha
Wed, 2 May 2012, 7:59 PM
strategies for reducing cost of common course query 5 Tim Hunt
Tue, 24 Apr 2012, 7:32 AM
VMWare for Moodle 2.2 6 Visvanath Ratnaweera
Wed, 25 Apr 2012, 4:11 AM
dbperformance.php on innodb 2 Visvanath Ratnaweera
Mon, 20 Feb 2012, 12:14 PM
Slow loading Moodle Course for Admin 4 Grant Mucha
Fri, 20 Apr 2012, 4:47 PM
UnixBench + Provider + Price + Type [Ideal for beginners] 1 Grant Mucha
Thu, 19 Apr 2012, 2:08 AM
Helpful suggestions wanted for New Moodler! 2 Grant Mucha
Sun, 15 Apr 2012, 9:12 AM
Is binary logging required for Moodle 2? 1 Stephen Overall
Mon, 16 Apr 2012, 2:46 AM
Does Moodle 2.0 only run on a dedicated server with the best performance? 2 Grant Mucha
Thu, 12 Apr 2012, 9:48 AM
Benchmarked EC2 / VPS / Dedicated 4 Jason De Donno
Wed, 11 Apr 2012, 5:34 AM
Large Moodle Implementation 3 Grant Mucha
Wed, 7 Mar 2012, 10:28 PM
Advice required for hosting with AWS 10 Grant Mucha
Wed, 28 Mar 2012, 3:45 AM
Problems with cron after upgrading to 2.1.x -> 2.2.x 3 Tim Hunt
Tue, 3 Apr 2012, 11:02 PM
System Requirements: Moodle for 100000+ Students and 10000 simultaneous users 5 Pavel Gonzalez Garcia
Fri, 10 Feb 2012, 1:29 AM
One server for 1000 concurrent user 3 Visvanath Ratnaweera
Fri, 30 Mar 2012, 11:12 PM
Caching and header expires in 1.9 2 Floyd Saner
Mon, 19 Mar 2012, 1:21 AM
Dell PowerEdge T610 for 3000 users 2 Visvanath Ratnaweera
Mon, 19 Mar 2012, 5:38 AM
Latest server for Moodle 2.2+ 2 Chris Megahan
Fri, 9 Mar 2012, 1:24 AM
Moodle 2.0: Servre RAM momery showing full 6 Visvanath Ratnaweera
Fri, 16 Mar 2012, 1:31 PM
"500 Internal Server Error" at some intervals 3 atin kumar
Wed, 21 Mar 2012, 2:21 PM
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