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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
	Desktop Requirements Locked	Chris Potter 9 Apr 2009	Chris Potter 9 Apr 2009	0
	Determining number of users	Cosmas Kasumba 10 Oct 2023	Visvanath Ratnaweera 12 Oct 2023	2
	Dev server performance tips (Windows) Locked	Ole Frank Jensen 8 May 2017	Ole Frank Jensen 10 May 2017	7
	Diagnosing issue with Moodle caching Locked	Alistair Spark 9 Aug 2019	Sarra Lev 18 Mar 2020	25
	Did anyone see problems with a project ... Locked	Andy Tagliani 12 Aug 2007	Andy Tagliani 13 Aug 2007	2
	Diferences between configuration demand by IBM LMS and Moodle Locked	Andre Macieira 4 Apr 2005	Lukasz Czyzewski 18 Apr 2005	1
	Difficulty using memcached to store moodle session Locked	Daniel Tran 24 Nov 2016	Daniel Tran 26 Nov 2016	6
	Disable Config Setting Caching Locked	Luke P 4 Feb 2022	Howard Miller 4 Feb 2022	1
	Disable cron emails Locked	Nathan Bruley 15 July 2014	Nathan Bruley 22 July 2014	4
	Disable logging Locked	Mike Algozzine 14 Mar 2013	Mike Algozzine 14 Mar 2013	0
	Disabling activity logging Locked	Ben Goodwin 22 June 2005	vancool black 13 Dec 2012	2
	Disabling HTTPs Security from within Locked	josh squires 22 July 2007	Reinaldo Programmer PhP 15 Apr 2010	2
	Disappearing Redis Cache Store Locked	Brian Y 14 Nov 2020	Brian Y 14 Nov 2020	1
	Disk capacity for media rich system Locked	John Williams 10 Dec 2007	Matt Gibson 19 Dec 2007	5
	disk or moodle component issues? Locked	Ángel Ayllón 10 June 2020	Andrew Lyons 10 June 2020	2
	Disk partitioning on Moodle server Locked	Teemu Koistinen 26 Apr 2006	Visvanath Ratnaweera 30 Apr 2006	5
	disk quota problem Locked	Roger Haigh 22 June 2005	Roger Haigh 24 June 2005	1
	Disk space of one profile Locked	Timo Kozlowski 26 June 2006	Timo Kozlowski 26 June 2006	0
	Disk space, duplicate? Locked	Chris Swaffield 13 Apr 2016	Albert Ramsbottom 14 Apr 2016	3
	Distributed Moodle Deployment \| Possible? Locked	Amarjeet Singh 25 June 2006	Amarjeet Singh 25 June 2006	0
	Distributed Moodle Installation Locked	Gaurav Vaish 19 July 2009	Gaurav Vaish 21 July 2009	7
	dmlreadexception Error	Athira O 7 Nov 2023	Visvanath Ratnaweera 7 Nov 2023	1
	do caches fall back to default when cache stores are not there? Locked	John Nowlan 31 Mar 2020	Howard Miller 31 Mar 2020	3
	Do I need Cloudflare Locked	curt bixel 9 Nov 2017	Ken Task 10 Nov 2017	1
	DO I need transactional InnoDB tables Locked	Eric Kemsley 11 Aug 2005	Martín Langhoff 11 Aug 2005	1
	Do we need $CFG->localcachedir after using xsendfile?	Balya Rochmadi 23 Oct 2023	Balya Rochmadi 26 Oct 2023	1
	Dockerized Moodle - Performance Locked	Nahum Lipkunsky 16 Feb 2018	Andrew Lyons 14 Aug 2018	47
	Dockerized Moodle - Dynamic configuration Locked	Nahum Lipkunsky 16 Feb 2018	Howard Miller 19 Feb 2018	4
	does "$CFG->dbpersist = false;" override "msql.allow_persistent = On" Locked	Barron Koralesky 15 Sept 2005	Barron Koralesky 15 Sept 2005	0
	Does anyone know why apache keeps restarting itself? Locked	kathy hooper 23 May 2006	kathy hooper 24 May 2006	3
	Does anyone know why this specific plugin is extremely slow to load Locked	Shanon Kotey 28 Feb 2020	Tim Hunt 28 Feb 2020	2
	Does location affecting moodle site performance Locked	cscl cscl 29 Jan 2013	cscl cscl 30 Jan 2013	2
	Does Moodle 2.0 only run on a dedicated server with the best performance? Locked	Joanna Tsai 12 Apr 2012	Grant Mucha 13 Apr 2012	2
	Does Moodle REQUIRE a server? Locked	Peter Christ 9 Mar 2006	Deleted user 13 Mar 2006	4
	Does moodle support 0.7 million users & expected 3000 concurrent users? Locked	varun tiwari 20 Sept 2022	Marcus Green 21 Sept 2022	5
	does Moodle support RSS/Atom Locked	Leigh Blackall 12 Mar 2004	Joyce Smith 12 Mar 2004	2
	Does the MOODLE build on the web service ? Locked	Ahmed Ibrahim 2 May 2006	Ahmed Ibrahim 2 May 2006	0
	Does this data point to where our bottleneck is. Locked	Rob Monk 15 Nov 2013	Simon Brock 27 Nov 2013	10
	Domain forwarding & how to get my domain in the address bar Locked	Jason Hollowell 28 Apr 2007	Maik Riecken 14 May 2007	25
	Domain problem Locked	Henryk Szczudlik 10 July 2007	Chris Lamb 11 July 2007	6
	Doubt about the best configuration of the server for Moodle Locked	Vianei Mayolo 26 June 2010	Vianei Mayolo 9 July 2010	3
	Download and upload speed Locked	Miguel Ángel Sanz 22 Mar 2020	Visvanath Ratnaweera 24 Mar 2020	9
	Download multiple files Locked	Mauricio Moreira Junior 7 May 2014	Guillermo Madero 8 May 2014	3
	Download speed moodle app 3.11 Locked	Katherine Puello Ramos 29 May 2022	Visvanath Ratnaweera 1 June 2022	7
	Drag and Drop lag Locked	Acs Gabor 19 June 2014	Acs Gabor 19 June 2014	0
	Dream Hosting Locked	Stephen Plume 3 Jan 2006	Martin Dougiamas 4 Jan 2006	4
	dream server Locked	n - 18 July 2007	Visvanath Ratnaweera 20 July 2007	2
	driver oci8 for Oracle Locked	Esteban Sánchez 15 Nov 2012	Esteban Sánchez 15 Nov 2012	0
	Dual Core Xeon (Woodcrest) Locked	Todd Thornton 18 Nov 2006	Jay Lee 19 Nov 2006	1
	Dual Dual Xeon's or Dual Quad Harpertowns Locked	Todd Thornton 22 July 2008	Sojiro Sato 22 July 2008	1
	Dual server setup: More powerful server as webserver or database server ? Locked	Michele Balazs 24 Feb 2005	Martín Langhoff 26 Feb 2005	9
	During backup mysql runs at 100% CPU for 10 hours - visitors face very slow site Locked	Norbert Berger 4 Aug 2005	koen roggemans 9 Nov 2005	9
	dynamic multiple servers under load balancer in amazon Locked	avi levi 2 May 2012	Grant Mucha 3 May 2012	1
	E-learning system for government ( need urgent help) Locked	ruba ruba 19 Feb 2010	Jason Jolaoso 25 Feb 2010	6
	eAccelerator Locked	jonnym m 8 Nov 2012	jason everling 6 Dec 2012	7
	eAccelerator Locked	Brad Fisher 17 Feb 2014	jason everling 27 Mar 2014	3
	Eaccelerator - Very high load - blank pages -URGENT Locked	A. H. 20 Feb 2008	A. H. 21 Feb 2008	4
	eAccelerator error and cache type setup Locked	Veronica Bendersky 9 Mar 2010	Ken Gibson 10 Mar 2010	18
	eAccelerator not being detected by Moodle? Locked	Charlie Owen 10 Dec 2007	Gary Anderson 21 Feb 2008	5
	eAccelerator setting causes blank pages Locked	Sileet A 11 May 2007	Dale Davies 20 Jan 2010	19
	eAccelerator vs. APC Locked	Ralph Patterson 21 Jan 2007	Genner Cerna 19 Mar 2007	23
	EACCELERATOR: PHP crashed Locked	Morten Brydensholt 25 Sept 2008	Jim Coe 3 Sept 2009	2
	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
	easy data upload Locked	Tomislav Negulić 12 Jan 2010	Tomislav Negulić 12 Jan 2010	0
	Easy quick performance boost for Moodle! Locked	Grant Mucha 11 Apr 2012	Visvanath Ratnaweera 1 July 2012	3
	EasyPHP Locked	M Moodley 8 June 2005	M Moodley 25 June 2005	2
	Edit an existing Store mappings Locked	António Godinho 23 Apr 2020	António Godinho 23 Apr 2020	2
	Edit php or add htaccess file? Locked	Melissa Benson 1 Oct 2009	Marc Grober 9 Oct 2009	12
	Editing difficulties Locked	David Dreyer 1 Jan 2008	David Dreyer 1 Jan 2008	0
	Effect of clearing tcm_grade_items_history table? Locked	Scott Bingham 14 Apr 2018	Tim Hunt 14 Apr 2018	1
	Effect of Debian Buster (PHP 7.3) on Moodle performance? Locked	Visvanath Ratnaweera 6 Aug 2019	Visvanath Ratnaweera 6 Aug 2019	0
	Email problem? System slow to create users or complete tests Locked	Stuart Ridout 19 June 2017	Jamie Kramer 21 June 2017	1
	Email sent via email_to_user() needs to be queued for background sending Locked	Chris Yust 2 Feb 2019	Chris Yust 5 Feb 2019	7
	email SMTP another port Locked	Yves Dufour 23 Feb 2006	Yves Dufour 23 Feb 2006	0
	Enabling automatic backups slows down server now Locked	Ethan Z 15 Feb 2013	Ken Task 21 Feb 2013	14
	Enabling RSS feeds and server load Locked	Cristian Alvarado 18 May 2006	Carl Jones 8 June 2006	2
	Encrypt database password Locked	Lars Jensen 23 Oct 2003	Martin Dougiamas 23 Oct 2003	1
	Energy efficient Moodle servers: Ideas, examples, ..	Visvanath Ratnaweera 5 Nov 2022	Brett Dalton 13 Oct 2023	20
	Environment for 1.6 Locked	Dan Poltawski 7 June 2006	James Dugal 7 June 2006	1
	Equivalent to MaxKeepAliveRequests in Windows IIS7 Locked	Mari Cruz García 16 Jan 2013	Mari Cruz García 24 Jan 2013	2
	Error : Database Connection failed Locked	S B 4 Aug 2020	Visvanath Ratnaweera 4 Aug 2020	2
	Error 407: Proxy Authentication Required Locked	Lucas Comerci 19 Aug 2020	Ken Task 20 Aug 2020	11
	error 524 when clicking on "Site Administration" Locked	Nima Zarin Parsa 24 May 2020	Nima Zarin Parsa 7 June 2020	12
	Error after months Locked	Dr. Nellie Deutsch 24 Dec 2012	Visvanath Ratnaweera 26 Dec 2012	2
	Error communicating with server Locked	Randy Foster 19 Feb 2019	Randy Foster 19 Feb 2019	0
	error database failed Locked	Barbara Schroeder 26 Aug 2008	Visvanath Ratnaweera 26 Aug 2008	2
	Error in my course..please help! Locked	Mohannad AlKayem 15 Feb 2005	Mohannad AlKayem 15 Feb 2005	2
	Error loading Windows Server 2019 backup file Locked	Алексей Буренко 19 Sept 2022	Winksom Winksom 29 Sept 2022	2
	Error Log - Shared Server Resources? Locked	The Web Side 30 June 2020	The Web Side 13 Aug 2020	9
	Error message when downloading backup file Locked	Scott Bingham 24 Apr 2020	Ken Task 24 Apr 2020	1
	Error on Moodle Locked	Luis Yovany Romo Portilla 28 Oct 2014	Luis Yovany Romo Portilla 28 Oct 2014	1
	Error on quiz attempt Locked	hallan Franco 23 Apr 2022	Howard Miller 23 Apr 2022	2
	Error Reading Database Moodle 2.51 Locked	Kevin Miller 23 Sept 2013	Usman Asar 24 Sept 2013	1
	Error reading from database Locked	Nadun Rathnayaka 6 Jan 2021	Guillermo Dova 7 Jan 2021	2
	error URI too long longer than 8190 Locked	Genner Cerna 12 June 2004	Genner Cerna 12 June 2004	0
	Error when testing moodle using JMeter Locked	Albert Ramsbottom 7 Oct 2013	Albert Ramsbottom 8 Oct 2013	4
	Error with database connection Locked	Dzevad Turcalo 21 Jan 2022	Dzevad Turcalo 9 Feb 2022	3
	Error: Database connection failed Locked	Chad Outten 1 Mar 2008	Rob Hudson 4 July 2008	6
	Error: Database connection failed Locked	Dhaval Patel 29 Jan 2020	Chris Fryer 1 Feb 2020	10
	Error: Database connection failed after memory used up Locked	hugo joe 2 July 2012	Visvanath Ratnaweera 30 July 2012	6