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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 3216 discussions
Status	Discussion	Started by	Last post	Replies	Actions
	Comparison of Three Inexpensive Website Hosts Locked	Erlyn Baack 22 Nov 2004	Erlyn Baack 25 Nov 2004	6
	Move from Shared to VPS...good move? Locked	Erlyn Baack 20 Aug 2009	Erlyn Baack 30 Mar 2010	4
	Alert pops up while playing SCORM Locked	Erwin Ancheta 8 July 2014	Ron Meske 10 July 2014	1
	problems with apache with 6000 users Locked	Eslam Gamie 5 Jan 2014	Ken Task 6 Jan 2014	3
	apache is eating all the CPU, 0% idle Locked	Eslam Gamie 21 Nov 2015	Howard Miller 26 Nov 2015	23
	Performance problems in Moodle 2.3 Locked	Esteban Sánchez 13 Nov 2012	Esteban Sánchez 15 Nov 2012	9
	driver oci8 for Oracle Locked	Esteban Sánchez 15 Nov 2012	Esteban Sánchez 15 Nov 2012	0
	pop3 autentification Locked	Esther Díez 22 Jan 2004	Mikko Toivola 9 Sept 2005	3
	mysql stops accepting connections Locked	Esther Díez 20 Oct 2004	Kevin Kimick 26 Oct 2004	1
	Cannot Click Menu in Moodle Locked	Esther I.K 28 Sept 2022	Esther I.K 18 Nov 2022	20
	Very slow loading or performance after changing theme to Edwiser RemUI Pro	Esther I.K 30 Aug 2023	Esther I.K 30 Aug 2023	6
	Performance problem due to mdl_cache_text table? Locked	Etan Lightstone 6 Aug 2005	Etan Lightstone 6 Aug 2005	0
	Advice on reliable hosting provider? Locked	Etan Lightstone 17 Oct 2006	Beth Phillips 26 Mar 2007	9
	Performance problem leading to complete crash.. ON A SUPERCOMPUTER Locked	Etan Lightstone 31 Oct 2006	Ronnie Brito 1 Nov 2006	5
	moodle 1.7 -- one very slow query in particular Locked	Ethan Sommer 6 Jan 2007	Jenny Watt 11 Jan 2007	6
	Enabling automatic backups slows down server now Locked	Ethan Z 15 Feb 2013	Ken Task 21 Feb 2013	14
	Moving Moodle to Another Directory Locked	Eugene Ritter 26 Mar 2004	Eugene Ritter 26 Mar 2004	2
	Moodle Performance Locked	Eugene Yap 19 July 2006	Kenny Backus 26 July 2006	7
	Calendar's Performance Locked	Eugene Dest 9 Mar 2009	Eugene Dest 11 Mar 2009	3
	Super slow site Locked	Eugene Voevodin 6 Sept 2013	Eugene Voevodin 6 Sept 2013	0
	Connecting to Read Only Stand-by Database - Performance	Eugene Tasic 24 Jan 2024	Eugene Tasic 24 Jan 2024	0
	Understanding which caching method is being used Locked	Eva E 26 Jan 2018	Eva E 26 Jan 2018	4
	cron error Locked	Evelien Fick 23 July 2005	Evelien Fick 23 July 2005	0
	moodle e dispositivos móveis Locked	everton santos 30 Sept 2009	everton santos 30 Sept 2009	0
	Moodle Server Spec for 5000 Concurrent Users. Locked	Evo evo 19 Oct 2020	Visvanath Ratnaweera 21 Oct 2020	2
	Performance problemas with large mdl_log Locked	Ewout ter Haar 26 Nov 2010	Ewout ter Haar 30 Nov 2010	2
	Problems to load the Administration Section Locked	Fabian Belledi 16 June 2016	Emma Richardson 17 June 2016	3
	Indexes for Table user_enrolments to improve performance Locked	Fabian Glagovsky 17 Jan 2021	Fabian Glagovsky 18 Jan 2021	2
	basic performance tuning Locked	Fabienne Neveu 4 Apr 2017	Fabienne Neveu 20 Apr 2017	7
	mail spooling Locked	Fabrizio Balliano 13 Dec 2005	Martín Langhoff 14 Dec 2005	6
	performances on average web hosting Locked	fabrizio montanari 21 Nov 2011	Visvanath Ratnaweera 30 Nov 2011	4
	Server crashes at +20 concurrent users Locked	Fabulous Phil 10 Oct 2014	Howard Miller 16 Oct 2014	6
	Dell PowerEdge M600 or Desktop running Ubuntu? Locked	Fahed Alrafidi 4 Dec 2008	Visvanath Ratnaweera 4 Dec 2008	1
	The Day is upon us Locked	faisal saeed 24 Dec 2005	Thomas Haynes 25 Dec 2005	2
	Hardware Requirment Locked	faizan baig 8 Mar 2013	J S 18 Mar 2013	5
	Moodle installation with Red Hat Linux Enterprise Locked	Fanny Rahmadhitya 13 Dec 2006	Visvanath Ratnaweera 17 Dec 2006	3
	Number of Moodle can be host Locked	Fanny Rahmadhitya 14 Dec 2006	Visvanath Ratnaweera 15 Dec 2006	6
	Hardware requirements Locked	Farhad Arshad 26 Sept 2016	Farhad Arshad 27 Sept 2016	13
	Frequent internal server 500 errors - adding quiz, printing reports Locked	Farhan Karmali 15 Dec 2015	Farhan Karmali 15 Dec 2015	0
	Preferred php handler for large moodle site Locked	Farhan Karmali 20 Apr 2016	Mark Sharp 6 May 2016	8
	Help please! How can I configure my server to allow 60 students to login moodle simultaneously?? Locked	fay wong 30 Nov 2004	Dave Bethany 22 Dec 2004	4
	Parse Error in Smarty.class.php Locked	Fazel Naghdy 24 Jan 2006	Iñaki Arenaza 25 Jan 2006	1
	safe mode restriction Locked	Federica Oradini 29 Jan 2006	Gert Jan Bouman 2 Feb 2006	2
	Moodle slow with admin settings Locked	Federica Marra 4 June 2015	Federica Marra 11 June 2015	3
	Moodle Home Page (with login form) high initial server response time Locked	Federico Fiore 8 Sept 2021	Howard Miller 8 Sept 2021	1
	Load many course categories faster Locked	Felipe Dos Santos 16 May 2018	Felipe Dos Santos 18 May 2018	6
	What are the hardware requirements for 100 to 500 users? Locked	Fernanda Brizotti 16 Oct 2007	Matt Gibson 17 Oct 2007	1
	How to monitor the system Locked	fevzi gungor 1 Oct 2005	Joar Herseth 2 Oct 2005	9
	mod_fcgid: error reading data from FastCGI server Locked	Filippo Carnevali 26 Sept 2014	Filippo Carnevali 26 Sept 2014	0
	Server Capacity? Locked	Fiona MacAlister 18 Sept 2006	Visvanath Ratnaweera 18 Sept 2006	1
	I AM TERRIFIED : MOODLE IS VERY SLOW ! Locked	fleu risseur 3 Apr 2015	Marcel Matschke 1 June 2017	33
	HOW to build a production site "hyper-fast, simple, non-explosive" Locked	fleu risseur 3 Apr 2015	Usman Asar 3 Apr 2015	1
	500 concurrent users on vitualization Locked	Florin Cazanaru 19 July 2012	Visvanath Ratnaweera 8 Aug 2012	26
	User with ID 2 and -1 slow down backup and restore process Locked	Flotter Totte 10 Apr 2020	Ken Task 12 Apr 2020	7
	Improve Moodle performance Locked	Floyd Saner 20 Nov 2015	Visvanath Ratnaweera 25 Nov 2015	5
	best architecture for a large installation Locked	Fouzi Sukhilala 27 Oct 2010	Albert Ramsbottom 19 Feb 2014	13
	need a script to auto restart the Apache services Locked	fouzia imran 4 Aug 2006	fouzia imran 9 Aug 2006	7
	Count hits on my MOODLE site Locked	fouzia imran 9 Aug 2006	Heather P 24 Aug 2006	4
	Can PC class machine support 250 concurrent users? Locked	fouzia imran 9 Aug 2006	Iñaki Arenaza 25 Aug 2006	22
	How to edit MYSQL variables Locked	fouzia imran 22 Aug 2006	Lewis Carr 6 Oct 2008	14
	smaller sizes Locked	Francis T 29 June 2004	N Hansen 8 July 2004	4
	Shared Hosting decision Locked	Francisco Lemus 1 Oct 2014	john Simpson 10 Nov 2014	12
	Preparation, Requirements and Scalability Locked	Francisco Orellana 25 Nov 2019	Francisco Orellana 4 Dec 2019	3
	Importing courses is quite slow + 1 thread at once Locked	François-Xavier Guénan 22 Jan 2021	François-Xavier Guénan 27 Jan 2021	3
	Anyone running Moodle using 4D DB and 4D WebSTAR V on MacOS X? Locked	Frank Lowney 31 Mar 2004	Martín Langhoff 1 Apr 2004	2
	How to set up the moodle to improve the download speed or make it can be used by Cache Server Locked	frank shen 24 May 2006	frank shen 25 May 2006	5
	mod_bwshare setting for moodle Locked	Frank B 25 Oct 2012	Frank B 25 Oct 2012	0
	poor performance for logged in users Locked	Frank Chmely 20 Feb 2013	J S 18 Mar 2013	12
	MOODLE 2.7 on Yosemite w/ Firefox Locked	Frank Keating 3 Feb 2015	Nicola Taylor 7 Feb 2015	3
	Solaris or not Solaris Locked	Frank Lister 21 Aug 2015	Howard Miller 25 Aug 2015	7
	Improve writing file performance Locked	Frank Madison 24 Feb 2022	Visvanath Ratnaweera 26 Feb 2022	4
	Guidelines for sizing server? Locked	Frank Burger 4 Aug 2022	Visvanath Ratnaweera 5 Aug 2022	1
	Moodle performance degraded	Frank Aguilieri 9 Sept 2023	Alain Raap 28 Mar 2024	13
	Moodle cluster for more than 100k users	Frank Morales 18 Nov 2023	Visvanath Ratnaweera 20 Nov 2023	7
	My Moodle site runs really slow in the computer lab; home users are okay Locked	Frankie Kam 5 Jan 2011	Visvanath Ratnaweera 11 Feb 2011	15
	I modified /etc/my.cnf to optimize my SQL Queries - led to Plesk problem. So how can I optimize ... Locked	Frankie Kam 11 Jan 2011	Alex Atkinson 7 Feb 2011	5
	My crazy list of modules, blocks and filters that I have installed on my site Locked	Frankie Kam 11 Jan 2011	Frankie Kam 12 Jan 2011	2
	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
	Why I am so HAPPY today..make me happier? Locked	Frankie Kam 15 Jan 2011	Frankie Kam 26 Jan 2011	9
	How to install Munin Resource Graphs on your Centos Server Locked	Frankie Kam 17 Jan 2011	Monico Briseño 18 Jan 2011	1
	Trying to implement “far-future expiration date” for static files in Centos 5. Doesn't WANT to ... Locked	Frankie Kam 24 Jan 2011	Frankie Kam 26 Jan 2011	5
	Nginx Locked	Frankie Kam 7 Feb 2011	Jürgen Strobel 21 Feb 2011	12
	php-speedy - any use in a LAMP environment and Moodle? Locked	Frankie Kam 28 Aug 2011	Troo Don 28 Aug 2011	1
	The site is getting slower and slower for admin and teachers? Locked	Frankle Lee 李智高 7 Mar 2016	Visvanath Ratnaweera 9 Mar 2016	8
	Problems crashing on the server Locked	Franky Vallori 29 June 2018	Albert Ramsbottom 9 July 2018	7
	Activated caching (memcached) produces segmentation faults Locked	franz reitinger 27 Sept 2013	Matteo Ricci 30 Sept 2013	4
	Hosting Moodle on own computer Locked	Fred Frazelle 29 Jan 2008	Greg Hayden 30 Jan 2008	1
	Site is very slow Locked	Fred Frazelle 31 Oct 2014	Fred Frazelle 31 Oct 2014	1
	Moodle 3.2.2 on Shared Hosting Locked	Fred Cole 26 Apr 2017	Rick Jerz 28 Apr 2017	8
	Plugin Error Locked	Freddie Batista 27 Sept 2013	Freddie Batista 27 Sept 2013	0
	Simultaneously Concurrent Users Locked	Freddie Batista 1 Feb 2014	J S 3 Feb 2014	5
	HELP ! Admin rights deleting from users Locked	Freddie Batista 4 Apr 2014	james mergenthaler 11 Apr 2014	4
	MYSQL to ORACLE Locked	Freddie Batista 2 July 2014	Marcus Green 2 July 2014	3
	Moodle slow for 2 users only Locked	Frederic Nevers 14 Mar 2012	Tim Hunt 16 Mar 2012	6
	Migrating 10000 students from Blackboard to Moodle? Locked	Frederik Questier 16 June 2003	Alex Walker 9 Dec 2011	26
	Exploited Scripts Locked	Fuad Luque 3 Mar 2004	Huib van Wees 4 Mar 2004	3
	datamodel.php file using all resources on server Locked	G D 28 June 2007	G D 28 June 2007	2
	Tell give somebody hardware recommendation for large scale installation for 10k users. Locked	G Omkar 5 Aug 2021	Howard Miller 5 Aug 2021	1
	Moodle installation for different physical sites Locked	Gabo Nagyr 8 Oct 2008	Gabo Nagyr 8 Oct 2008	0
	How much disk space for 5000 users and 1200 courses??? Locked	Gabriel Dias 10 Oct 2007	Paolo Oprandi 10 Oct 2007	2