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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.

List of discussions. Showing 100 of 3217 discussions
Status	Discussion	Started by	Last post	Replies	Actions
	How much disk space for 5000 users and 1200 courses??? Locked	Gabriel Dias 10 Oct 2007	Paolo Oprandi 10 Oct 2007	2
	Requirements for a scalable platform Locked	Gabriel Del Signore 16 Sept 2009	Visvanath Ratnaweera 19 Nov 2009	1
	interpret image related to performance of a course. Locked	Gabriel Fernandez Mora 13 Jan 2020	Gabriel Fernandez Mora 13 Jan 2020	0
	Moodle 3.5 AWS PostgresSQL Max_Connections Locked	Gabriel Caride 30 Sept 2020	Gabriel Caride 26 Nov 2020	1
	mod_pagespeed with moodle Locked	Gain Oloya 23 Nov 2010	Ricardo Caiado 23 Nov 2010	1
	some suggestions about server specs, please Locked	Gao Jun 25 Aug 2006	Gao Jun 25 Aug 2006	2
	Moodle site became very slow after upgrading to 2.8.5 Locked	Garamkhand Surendelg 31 Mar 2015	Albert Ramsbottom 3 June 2015	8
	Multiple Sites and data folders Locked	garth verity 8 May 2008	Mark Picker 30 Jan 2009	6
	fresh install of 3.9, 5sec page loads... Locked	Garth Brady 9 Oct 2020	Garth Brady 10 Oct 2020	3
	3.10.1 login page slow to load Locked	Garth Brady 21 Feb 2021	Junior Saraiva 8 Dec 2022	7
	SUBSTANTIAL speed improvement by enabling compression Locked	Gary Anderson 4 July 2006	N Hansen 5 July 2006	4
	apache crashing on standard Moodle.org XAMPP distribution Locked	Gary Anderson 12 Sept 2006	Gary Anderson 12 Sept 2006	0
	Upload File Size Sticking [Moodle 1.6.2] Locked	Gary Day 21 Sept 2006	Gary Day 21 Sept 2006	2
	Backups Delayed / CPU Spiking Locked	Gary Day 12 Apr 2007	Richard Williamson 21 Apr 2007	2
	Rule of thumb for sizing Moodle servers Locked	Gary Weinstein 25 Jan 2008	Fouzi Sukhilala 26 Oct 2010	8
	Advice Locked	Gary Moncrieff 20 Aug 2012	Gary Moncrieff 21 Aug 2012	2
	Timeout problems when editing in Moodle 2.2.3 Locked	Gary Lebowitz 27 Sept 2012	Gary Lebowitz 9 Oct 2012	8
	Problem with Godaddy Virtual Dedicated Server nd Moodle 2.3.3 Locked	Gary Lebowitz 3 Feb 2013	Gary Lebowitz 12 Feb 2013	11
	Terrible performance with GoDaddy VDS - Help! Locked	Gary Lebowitz 11 Feb 2013	Gary Lebowitz 14 Feb 2013	5
	Godaddy: VPS or (which) dedicated? Locked	Gary Lebowitz 11 Feb 2013	Yousef H. 5 Sept 2013	22
	Ease of access of users with low bandwidth/poor computer resources to 1.9.19 vs. 2.4+ Locked	Gary Lebowitz 1 Mar 2013	Rick Jerz 5 Mar 2013	3
	Problem with uploading SCORM package to Moodle 2.4.1 platform Locked	Gary Lebowitz 9 Mar 2013	Gary Lebowitz 9 Mar 2013	0
	Moodle 2.7 running on virtual server with 1Gbyte RAM Locked	Gary Lebowitz 5 Sept 2014	Gary Lebowitz 5 Sept 2014	0
	More on the previous posting. Problems uploading File resource in 2.7 Locked	Gary Lebowitz 5 Sept 2014	Gary Lebowitz 6 Sept 2014	2
	Problem with email messages in 2.7 Locked	Gary Lebowitz 8 Nov 2014	Gary Lebowitz 8 Nov 2014	2
	Server crash during chat wtih 2 other persons Moodle 2.4.3 Locked	Gary Lebowitz 11 Nov 2015	Emma Richardson 6 Jan 2017	11
	Private Server MOODLE Access Fail Locked	Gary Marsh 28 Dec 2017	Ken Task 30 Dec 2017	6
	Distributed Moodle Installation Locked	Gaurav Vaish 19 July 2009	Gaurav Vaish 21 July 2009	7
	How many concurrent users can moodle handle without compromising on performance? Locked	Gaurav Kumar 16 Sept 2011	Gaurav Kumar 16 Sept 2011	2
	JMeter Testing- Number of samples issue Locked	Gaurav Shinde 29 Mar 2021	Gaurav Shinde 29 Mar 2021	0
	JMeter Testing - Error percentage issue Locked	Gaurav Shinde 6 Apr 2021	Visvanath Ratnaweera 7 Apr 2021	1
	Php-fpm configurations issue Locked	Gaurav Shinde 28 Apr 2021	Alex Rowe 28 Apr 2021	3
	Install moodle latest version on Suse linux 15 SP2 Locked	Gaurav Kumar 20 Aug 2021	Howard Miller 22 Aug 2021	1
	please Help with MySQL optimization Locked	Gautam Saha 12 June 2007	Ken Wilson 15 June 2007	4
	How to make a custom php.ini Locked	Gautam Saha 1 July 2007	Just H 24 July 2007	1
	Moodle 2.9 on WAMP Locked	Gavriel Goidel 23 Nov 2015	Tim Hunt 24 Nov 2015	1
	Moodle hangs while trying to view one test results Locked	Gedas Liugas 11 Feb 2016	Howard Miller 11 Feb 2016	1
	Getting 405 errors while submitting quiz Locked	geetha prabhu 4 May 2018	geetha prabhu 10 May 2018	18
	URL site redirection Locked	Genner Cerna 29 Feb 2004	Thamarai Thamarai 30 Sept 2014	9
	an unknown filter was not added: PHP Locked	Genner Cerna 7 June 2004	Zbigniew Fiedorowicz 7 June 2004	2
	error URI too long longer than 8190 Locked	Genner Cerna 12 June 2004	Genner Cerna 12 June 2004	0
	Speed up moodle 3x (times) Locked	Genner Cerna 29 June 2004	Genner Cerna 30 June 2004	2
	Improve speed of Moodle and server. Locked	Genner Cerna 12 Nov 2004	Genner Cerna 21 Mar 2005	20
	apache benchmarking... Locked	Genner Cerna 15 Mar 2005	Genner Cerna 4 Apr 2005	7
	php accelerator help... Locked	Genner Cerna 16 Mar 2005	Dipa Shah 17 Aug 2006	5
	MySQL is overloaded Locked	Genner Cerna 4 Apr 2005	Ivo Antoniazzi 1 Nov 2005	42
	php accelerator Locked	Genner Cerna 4 July 2006	Anthony Borrow 11 Aug 2006	19
	redirect after post Locked	Genner Cerna 23 Mar 2007	Genner Cerna 23 Mar 2007	0
	Moodle + Gzip or ob_gzhandler Locked	Genner Cerna 10 July 2009	Genner Cerna 10 July 2009	0
	Worldwide moodle Locked	Geoff Tothill 1 Aug 2009	Geoff Tothill 18 Sept 2009	3
	Adding APC Extension to PHP fpr Caching Locked	Geoff Diggles 18 Dec 2013	Simon Allison 7 Jan 2014	19
	Loading complaint from hosting manager Locked	Geoffrey Robertson 12 Sept 2003	Geoffrey Robertson 16 Sept 2003	6
	Shared or Dedicated Hosting? Locked	George Kao 17 July 2004	W Page 17 July 2004	2
	One web server, multiple Moodle setups Locked	George Young 6 June 2005	Visvanath Ratnaweera 24 Dec 2014	13
	problem with sessions? Cannot login Locked	George Harrison 6 Oct 2005	Just H 8 Oct 2005	2
	'smallest moodle 2.3 server' Locked	George Varghese 1 Aug 2012	George Varghese 8 June 2016	6
	Performance Issue	George Chrysostomou 11 Dec 2023	Visvanath Ratnaweera 11 Dec 2023	2
	Dear documentation team, Locked	Ger Tielemans 28 Oct 2005	Samuli Karevaara 30 Oct 2005	10
	What is wisdom Locked	Ger Tielemans 11 Feb 2006	Iñaki Arenaza 12 Feb 2006	2
	/admin/index.php Locked	Ger Tielemans 13 May 2007	Ger Tielemans 13 May 2007	0
	Scheduled tasks - Log cleanup Locked	Gerald Albion 4 June 2015	Howard Miller 4 June 2015	1
	Moodle Mobile on Android Locked	gerard van rooy 28 Jan 2014	Howard Miller 30 Jan 2014	5
	Moodle working very slow all of a sudden Locked	Gerardo Coto 5 Nov 2021	Gerardo Coto 18 Nov 2021	9
	Terrible performance by Moodle Locked	Gerardo Ariel Moderne 27 Mar 2020	Visvanath Ratnaweera 31 Mar 2020	19
	MS FrontPage extensions Locked	Germán Schultz 4 Nov 2003	Martin Dougiamas 4 Nov 2003	2
	Will this configuration handle 20K users? Locked	German Acevedo 17 Apr 2014	German Acevedo 22 Apr 2014	9
	Extremely Slow Locked	Gerrit Anderson 4 Nov 2012	Visvanath Ratnaweera 4 Nov 2012	1
	synchronising dataroot using unison between web servers Locked	Gerry Hall 27 Apr 2014	Gerry Hall 27 Apr 2014	0
	Slow forum with 3500+ replies Locked	Gerry Miranda 31 Oct 2020	Visvanath Ratnaweera 31 Oct 2020	1
	Moodle 1.6 - which distribution of Linux Locked	giacomo gensini 29 June 2006	Dave Ray 2 July 2006	22
	Teaching via satellite with Moodle and Moodle video server Locked	Gianfranco Picozzi 20 June 2011	Gianfranco Picozzi 20 June 2011	0
	How do I prevent Moodle-database problems? Help, please! Locked	Gilbert Busana 25 Oct 2004	Gilbert Busana 26 Oct 2004	3
	Database Connection Failed Locked	Gilbert Loyogoy 25 Aug 2020	James Steerpike 26 Aug 2020	3
	Server Spec Locked	Gillian Comley 6 Oct 2004	Howard Miller 10 Oct 2004	1
	User site capacities questions Locked	Deleted user 3 Nov 2015	Visvanath Ratnaweera 4 Nov 2015	27
	moodle for 10000 users Locked	Giorgi Mezurnishvili 16 Oct 2022	Le Minh Tuan 28 Oct 2022	4
	Load balancing Locked	Girish Mulchandani 24 Oct 2009	Visvanath Ratnaweera 10 Nov 2009	4
	Moodle - Reverse Proxy Configuration Issue Locked	Gita Gosavi 23 Nov 2021	Gita Gosavi 23 Nov 2021	0
	Quiz Performance Issues - Mock failed for 263 candidates Locked	Gita Gosavi 20 Dec 2022	Visvanath Ratnaweera 4 Jan 2023	3
	Moodle on cloud with Redis Cache: Unable to obtain session lock Locked	Giuseppe Mandarà 11 Mar 2021	Alain Raap 2 Dec 2021	7
	Stats Cron Job Kills Server Locked	Glenn Black 12 Sept 2006	Ralph Patterson 28 Sept 2006	6
	Moodle performance very slow Locked	Globe College 25 June 2010	hostmaked gmail 24 July 2010	9
	Unable to run moodle beyond 250 users. Locked	Gnanendra Reddy 27 Aug 2020	Alex Rowe 31 Aug 2020	17
	Moodle 1.5.2 & Solaris 10 performance problems Locked	Gonzalo Enciso 30 Aug 2005	James Dugal 30 Aug 2005	1
	hardware and software needs for a powerfull moodle server Locked	Gonzalo Pacheco Alvarez 6 Aug 2016	Visvanath Ratnaweera 8 Aug 2016	4
	Moodledata over 750G after upgrade to 3.9.1 Locked	Gonzalo Cañada 25 Aug 2020	Guillermo Dova 6 Sept 2020	9
	Cherokee + PHP + Moodle Locked	Goran Mekic 25 Mar 2006	Benoit Brosseau 4 Apr 2006	1
	Working and load very slow my site Locked	gourav gourav 14 Jan 2015	Howard Miller 14 Jan 2015	1
	Problems with 100 hundred users with Postgres Locked	Graciela Vargas 10 Mar 2005	Eloy Lafuente (stronk7) 12 Mar 2005	7
	Refresh Mod Calendar Events Task - Slow Locked	Grady Miller 2 Mar 2018	Russell Morriss 1 Aug 2018	6
	Server spec for large school 1800 users - help Locked	Graeme Morley 1 Dec 2005	Ravi Vare 22 Jan 2011	9
	Moodle/Joomla Load Testing Locked	Graeme Batsman 11 July 2006	Brett Drinkwater 15 July 2006	1
	Will I get better speed from linux? Locked	Graeme Forrester 9 Jan 2007	Mikel Stous 9 Feb 2007	13
	Advice sought regarding Moodle configuration and performance issues Locked	Graeme Boxwell 12 Sept 2011	Graeme Boxwell 4 Oct 2011	2
	Moodle Server Crashing Locked	Graham Stone 20 Jan 2014	Ken Task 26 Jan 2014	10
	PHP 5.4 and Suse Linux Problems Locked	Graham Stone 14 July 2014	Peter Dorman 23 July 2014	6
	Load Testing Locked	Graham Stone 13 May 2015	Michael Hughes 28 June 2016	5
	splitting database to Amazon S3 Locked	graham green 12 Aug 2015	Paul Verrall 17 Aug 2015	12
	Moodle Keeps Crashing Locked	Graham Stone 10 Nov 2015	Graham Stone 11 Nov 2015	4
	Latest server for Moodle 2.2+ Locked	Grant Mucha 9 Mar 2012	Chris Megahan 23 Mar 2012	2