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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
	Apache crashes due to PHP memory error Locked	Jade Tippett 29 Jan 2009	Jade Tippett 5 Feb 2009	14
	Shopping for a new server Locked	Eric Hagley 20 May 2008	Eric Hagley 1 Oct 2010	14
	How to edit MYSQL variables Locked	fouzia imran 22 Aug 2006	Lewis Carr 6 Oct 2008	14
	Backup Courses used 2Gb RAM?! Locked	Edwin Klein 3 Jan 2006	Iñaki Arenaza 26 Jan 2006	14
	I'm buying a new PC/Server what should I get? Locked	reg phenna 29 Mar 2005	Reeny George 15 Apr 2005	14
	Scaleablity of Moodle Locked	Theo Stone 25 Jan 2004	Vipen Mahajan 21 June 2008	14
	Moodle performance degraded	Frank Aguilieri 9 Sept 2023	Alain Raap 28 Mar 2024	13
	Moodle cron sends a VPS yoyo?	Visvanath Ratnaweera 15 Feb 2023	Visvanath Ratnaweera 15 May 2023	13
	write performance issue with OCI FSS Locked	Khaled Atteya 19 June 2022	Howard Miller 22 June 2022	13
	Performance issues on clustered environment Locked	Red Nano 22 Dec 2021	Red Nano 6 Jan 2022	13
	Has Ghostscript something to do with a half a million lock files? Locked	Visvanath Ratnaweera 24 Nov 2021	Visvanath Ratnaweera 11 Jan 2022	13
	Performance evaluation (suggestions) Locked	Aroldo Barroso 7 June 2021	Aroldo Barroso 9 June 2021	13
	Moodle Hosting Locked	Irfan Aleem 24 Aug 2020	Rick Jerz 1 Sept 2020	13
	CPU usage High Locked	manoj joseph 30 June 2020	Visvanath Ratnaweera 7 July 2020	13
	sitedata usage is massive Locked	Stefan McGarvey 6 May 2020	Stefan McGarvey 7 May 2020	13
	Moving moodle.org to kubernetes Locked	Eduard Cercós 25 Apr 2020	Eduard Cercós 3 Oct 2022	13
	How to prime Opcache / Fill Opcache with all Moodle php files Locked	Deleted user 9 Apr 2020	Thorsten Bartel 3 Nov 2020	13
	Backups failing - some general questions Locked	Nikolaas Dries 7 Apr 2020	Nikolaas Dries 7 June 2020	13
	Please share your task processing settings! Locked	Howard Miller 10 Oct 2019	Howard Miller 31 Oct 2019	13
	Hardware /performance suggestion Locked	Dorian C 13 Sept 2019	Dorian C 1 Jan 2020	13
	Moodle Architecture Calculator Locked	Noveck Gowandan 26 July 2019	Jeff White 2 Aug 2019	13
	Timeouts during an exam Locked	Danishka Navin 12 Jan 2019	Howard Miller 21 Jan 2019	13
	NFS for dataroot Locked	Keith Weinheimer 7 Dec 2018	chaitanya varanasi 15 Feb 2019	13
	Moodle site very slow from off premisis Locked	Jack B 2 Mar 2018	Jack B 6 Mar 2018	13
	3-tier Architecture Locked	Jonathan Marsh 1 Dec 2017	Jonathan Marsh 5 Dec 2017	13
	New Moodle 3.3 service super slow Locked	Jason Menard 19 June 2017	Alain Raap 14 Dec 2017	13
	"Slow" render Times not under 1.2 sek Locked	Marcel Matschke 11 Apr 2017	Marcel Matschke 22 Apr 2017	13
	A moodle setup for 2K simultaneous users taking quiz Locked	Mahir M Hameed 30 Mar 2017	John Papworth 26 Apr 2017	13
	Hardware requirements Locked	Farhad Arshad 26 Sept 2016	Farhad Arshad 27 Sept 2016	13
	Advice : AWS Capacity Planning for 20,000 concurrent users Locked	Sid Mad 5 Aug 2016	Albert Ramsbottom 12 Sept 2016	13
	Opcache question from NON technical user. M2.73 Locked	Dom F 11 May 2016	Mark Sharp 13 May 2016	13
	Moodle data folder on a shared ntfs volume Locked	Heather P 17 Mar 2016	Ken Task 26 Apr 2016	13
	Server Clustering recommendations M2.6 Locked	Albert Ramsbottom 8 Jan 2014	J S 16 Feb 2014	13
	3 options for Moodle database cluster Locked	CP Lau 10 Sept 2013	CP Lau 6 Jan 2014	13
	Database Overload Locked	allen haney 18 Apr 2013	Howard Miller 20 Apr 2013	13
	Flash to SCORM in Moodle 2.4.1 (Very Slow) Locked	Heng Zhang 27 Feb 2013	Visvanath Ratnaweera 10 Mar 2013	13
	Moodle Hardware Requirement For 300 Concurrent & 550 peak? Locked	Moole Addict 5 Feb 2013	Moole Addict 23 Feb 2013	13
	Moodle on Bluehost? Locked	rockerz g 4 Mar 2012	Rick Jerz 13 Sept 2016	13
	Decrease number of database queries per page view - use memcached? Locked	Alexander Bias 16 Jan 2012	David Ackerman 25 Jan 2012	13
	Quizzes : performance on exams period, randomizing questions Locked	Anthony James 21 Oct 2010	Tim Hunt 22 Oct 2010	13
	Slow query log Locked	jean-paul KIRKBRIDE 9 Mar 2011	jean-paul KIRKBRIDE 14 Mar 2011	13
	best architecture for a large installation Locked	Fouzi Sukhilala 27 Oct 2010	Albert Ramsbottom 19 Feb 2014	13
	Apache Configuration for 2000 Users for Quiz ?? Locked	Bipin Das 15 June 2009	Martín Langhoff 18 June 2009	13
	Apache crashes due to PHP out of memory error Locked	Mohan V 15 May 2009	Henning Bostelmann 20 Feb 2010	13
	Options for a Multiple Site Setup (40+) Locked	Ceri Richards 8 Apr 2009	Michael Penney 16 June 2009	13
	'normal' and 'good' load times? Locked	Lael ... 24 Apr 2008	Lael ... 14 May 2008	13
	Upgrade degraded performance...? Locked	David Gill 30 May 2007	Heather P 3 Aug 2007	13
	Will I get better speed from linux? Locked	Graeme Forrester 9 Jan 2007	Mikel Stous 9 Feb 2007	13
	What size server Locked	Brendan Leahy 9 Oct 2006	Ralph Patterson 17 Oct 2006	13
	Server very slow (Xampp1.5.4/Moodle1.6.2) Locked	Vitor Gonçalves 4 Oct 2006	Cândido Pereira 22 Oct 2006	13
	Firts Steps in Moodle and Solution for 200 concurrent users Locked	Duarte Silvestre 13 May 2006	Rory Allford 16 May 2006	13
	Can I put moodle into a CD and work it perfectly? Locked	Asier Suarez 5 Apr 2006	Tomas A. Ramirez Andujar 11 Jan 2008	13
	Help with requirements Locked	Olga Janeth Gutiérrez 12 Aug 2005	Just H 23 Aug 2005	13
	One web server, multiple Moodle setups Locked	George Young 6 June 2005	Visvanath Ratnaweera 24 Dec 2014	13
	Website Hosting Service Locked	Paul Alexander 6 Aug 2004	Madan Kumaraswamy 13 Sept 2005	13
	Tips for increase quiz performance	Eng Husam 28 Sept 2023	James Steerpike 3 Oct 2023	12
	3.9.6 calendar affecting performance Locked	Sarah Cotton 25 May 2021	Juan Luis Maestre 5 Jan 2022	12
	Request Timeout when editing or creating users Locked	Miguel Fabo 6 Mar 2021	Miguel Fabo 11 Mar 2021	12
	Load Test Locked	Yadika Prasad 5 July 2020	Visvanath Ratnaweera 30 July 2020	12
	error 524 when clicking on "Site Administration" Locked	Nima Zarin Parsa 24 May 2020	Nima Zarin Parsa 7 June 2020	12
	Shared temp folders in config.php Locked	Juan Luis Maestre 17 May 2020	Juan Luis Maestre 23 May 2020	12
	Moodle sessions timing out Locked	Adam Norwood 8 Nov 2019	Thorsten Bartel 14 Nov 2019	12
	Moodle REALLY slow with 20 concurrent users Locked	Oliver Boyers 7 Aug 2019	Visvanath Ratnaweera 9 Aug 2019	12
	Tuning FCGI and Apache for Moodle Locked	Stephen Bourget 18 May 2019	Simon Lewis 4 Feb 2020	12
	Requirement for Migrating My Moodle School Locked	Arnold Yu 10 Dec 2018	Visvanath Ratnaweera 11 Dec 2018	12
	Timing Out Locked	Steve Hyland 11 Aug 2018	Rick Jerz 13 Aug 2018	12
	Site home very slow, 39 seconds Locked	Albert Ramsbottom 18 July 2018	Howard Miller 25 July 2018	12
	course completion issue Locked	Leena Nikhare 22 Dec 2017	Ken Task 28 Dec 2017	12
	Backup and restore in Moodle Locked	Alain Raap 18 Dec 2017	Alain Raap 24 Dec 2017	12
	Frequent deadlocks on SESSIONS table Locked	Joe Schmoe 16 Nov 2017	Joe Schmoe 12 Jan 2018	12
	how do you handle long tasks ? Locked	Julien Boulen 9 June 2017	Rick Jerz 1 Nov 2017	12
	Moodle For 10000 concurrency especially for Quiz Locked	Shyam Jadala 6 Mar 2017	Shyam Jadala 7 Mar 2017	12
	When to build a server cluster for Moodle (with examples)? Locked	Visvanath Ratnaweera 7 Mar 2016	Luis de Vasconcelos 25 Apr 2016	12
	Moodle Performance Problems (split) Locked	Pupil Senpro 1 Dec 2015	Pupil Senpro 2 Dec 2015	12
	Moodle web servers locking up Locked	Hittesh Ahuja 27 Oct 2015	Visvanath Ratnaweera 29 Oct 2015	12
	splitting database to Amazon S3 Locked	graham green 12 Aug 2015	Paul Verrall 17 Aug 2015	12
	Saving quiz caching takes a long time and crashes Locked	Michael Ko 17 Dec 2014	Michael Ko 21 Jan 2015	12
	Moodle course page slow only with Firefox Locked	Hittesh Ahuja 19 Nov 2014	Hittesh Ahuja 9 Feb 2015	12
	Can't seem to get sessions saved in memcached Locked	Matej Zerovnik 28 Oct 2014	Mehmet Sen 16 Oct 2015	12
	20 Concurrent users - 4GB SLOW Locked	hernani moodle 10 Oct 2014	Luis de Vasconcelos 28 Oct 2014	12
	Shared Hosting decision Locked	Francisco Lemus 1 Oct 2014	john Simpson 10 Nov 2014	12
	Apache CPU usage shoots to >= 100%. Why? Locked	Brad Smith 28 July 2014	Brad Smith 7 Aug 2014	12
	Server specification for 18000 users moodle site Locked	Dr. Amitkumar Mali 21 July 2014	Itamar Tzadok 23 July 2014	12
	Amazon AWS Locked	Albert Ramsbottom 12 Feb 2014	Albert Ramsbottom 8 Apr 2016	12
	Moodle site gradually slowed now essentially stopped Locked	Patrick Hallermann 23 Jan 2014	srikanth raju 3 June 2014	12
	moodle crashed while quiz Locked	Martin Fernandes 5 Dec 2013	Emma Richardson 12 Dec 2013	12
	poor performance for logged in users Locked	Frank Chmely 20 Feb 2013	J S 18 Mar 2013	12
	700 Concurrent users Locked	jaffa jay 14 Nov 2012	julian maya 16 Nov 2012	12
	Some Tips on Getting nginx+php-fpm working Locked	Kory Prince 21 Oct 2011	Владимир Зотов 24 Sept 2015	12
	Nginx Locked	Frankie Kam 7 Feb 2011	Jürgen Strobel 21 Feb 2011	12
	Load balancer Locked	Shin Hiorie 19 Jan 2011	Visvanath Ratnaweera 30 Jan 2011	12
	I use eAccelerator 0.9.6.1 but cache scripts = 1 all the time Why? Locked	Frankie Kam 14 Jan 2011	jason everling 12 Nov 2012	12
	New e-peen script! Er, I mean, system performance analyser Locked	sam marshall 14 Nov 2010	AL Rachels 25 Dec 2010	12
	Edit php or add htaccess file? Locked	Melissa Benson 1 Oct 2009	Marc Grober 9 Oct 2009	12
	Linux server - what version Locked	Heather P 24 Mar 2009	Bartosz Cisek 6 July 2009	12
	1000 concurrent users Locked	Enrique Martinez Roldan 8 Aug 2008	Howard Miller 26 Nov 2015	12
	TCP Load Balancing Questions Locked	Richie Foreman 18 July 2006	Rory Allford 4 Aug 2006	12
	In search of the killer Moodle server instal·lation Locked	Josep M. Fontana 22 Mar 2006	Jonathan Moore 5 Apr 2006	12
	Old Servers anyone? Locked	M Y 9 Mar 2006	Benoit Brosseau 15 Mar 2006	12
	utf-8 and mysql Locked	Robert Collazo 6 Feb 2006	Martín Langhoff 9 Dec 2008	12