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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
	Stress test Locked	Toni Mas 8 May 2006	Richie Foreman 11 May 2006	6
	What server? Locked	Toni Mas 3 May 2006	Visvanath Ratnaweera 3 May 2006	2
	A JMeter test plan for a quiz Locked	Tomoya Saito 27 July 2021	Tomoya Saito 1 July 2022	10
	easy data upload Locked	Tomislav Negulić 12 Jan 2010	Tomislav Negulić 12 Jan 2010	0
	Moodle and local PC CBT files for 12,000 users across New Zealand Locked	Tomer Sagi 25 July 2007	Tomer Sagi 25 July 2007	0
	Idea for Moodle performance metrics Locked	Tomasz Muras 9 Feb 2014	David Monllaó 17 Feb 2014	8
	Repeated crashes at random times Locked	Tomas Suarez 25 Nov 2021	Tomas Suarez 25 Nov 2021	0
	Minium hardware requeriments for... Locked	Tomas Perez Socava 14 Apr 2010	Visvanath Ratnaweera 19 Apr 2010	8
	soliution for using moodle CMS Locked	Tomas Bersenas 20 Mar 2006	Andrew McMillan 21 Mar 2006	1
	SAFE MODE=ON - FTP instead? Locked	Tom harr Jakobsen 14 Mar 2006	stefan kraus 18 Mar 2006	3
	Broke caching and site is completely down	tom swet 1 Dec 2023	tom swet 1 Dec 2023	3
	Hardware Requirements Locked	Tom Connolly 19 Jan 2021	Visvanath Ratnaweera 19 Jan 2021	2
	Admin Pages Slow (10-20 sec page loads) Locked	Tom Palaz 14 May 2019	Luis de Vasconcelos 22 May 2019	5
	Moodle SqlDump is 2GB, but MySQL database is only a few Mb... ?? Locked	Tom Smith 15 June 2018	Ken Task 20 June 2018	10
	SCORM editing activity slow Locked	Tom Kleintjens 28 Sept 2016	Tom Kleintjens 28 Sept 2016	0
	PHP accelerator rookie questions Locked	Tom Moseley 11 Dec 2013	Tom Moseley 12 Dec 2013	8
	Where to start choosing a server spec for moodle 2.# Locked	Tom Moseley 5 June 2013	Tom Moseley 5 June 2013	0
	Moodle Statistics block slowing down moodle Locked	Tom Moseley 20 Feb 2013	J S 18 Mar 2013	5
	What server to use Locked	Tom Wootton 15 Apr 2011	Renaat Debleu 3 May 2011	6
	slow slow quick quick slow Locked	Tom Denton 18 Jan 2006	Art Lader 18 Jan 2006	1
	How does Moodle scale? Locked	Tom Boyle 1 Oct 2004	Sam O 3 Oct 2004	3
	installed moodle 3.4.1 and it is slow. Locked	TokiyoRio TokiyoRio 18 Sept 2019	Colin Fraser 19 Sept 2019	3
	Content Pre-positioning Locked	todd vainisi 20 Apr 2011	todd vainisi 21 Apr 2011	2
	Moodle 1.8+ Poor server response time Locked	todd vainisi 20 Aug 2008	todd vainisi 26 Aug 2008	3
	Dual Dual Xeon's or Dual Quad Harpertowns Locked	Todd Thornton 22 July 2008	Sojiro Sato 22 July 2008	1
	Win 2k3/IIS6 - CPU Spike Locked	Todd Bryant 5 Dec 2007	Visvanath Ratnaweera 5 Dec 2007	2
	Moodle site Hangs Up- "Could not find forum module!!" Locked	Todd Thornton 30 July 2007	Todd Thornton 30 July 2007	1
	New Dedicated Server- Which MYSQL and PHP versions should I use? Locked	Todd Thornton 21 Nov 2006	Todd Thornton 28 Nov 2006	9
	Dual Core Xeon (Woodcrest) Locked	Todd Thornton 18 Nov 2006	Jay Lee 19 Nov 2006	1
	Moving from Dev to QA to Production Servers - Problems! Locked	Todd Cranston-Cuebas 25 May 2006	Todd Cranston-Cuebas 26 May 2006	3
	slow site admin loading Locked	Tod Anderson 12 Sept 2012	Tod Anderson 18 Sept 2012	2
	hardware software sizing Locked	Tobias Olausson 21 Feb 2014	Tobias Olausson 21 Feb 2014	6
	Hardware for 1400 users Locked	Tobias Ceglarek 1 Oct 2013	jason everling 2 Oct 2013	1
	cron.php backup takes more than 24 hours Locked	Tobias Marx 6 Sept 2007	Tobias Marx 10 Sept 2007	2
	rearranging course categories is very slow Locked	Tobias Marx 21 Aug 2007	Rosario Carcò 13 Sept 2010	26
	many queries at login after update to 1.8.2+ Locked	Tobias Marx 17 Aug 2007	Wen Hao Chuang 5 Sept 2007	4
	Moodle Installation Information Locked	Tina Piper 5 Apr 2007	Tony Hursh 6 Apr 2007	1
	Moodle Portal Locked	Tina Piper 20 Oct 2006	Robert Brenstein 12 Nov 2006	4
	Moodle Implementation/Feasibility Study Locked	Tina Piper 29 Sept 2006	Visvanath Ratnaweera 29 Sept 2006	1
	Input on Large Scale Install 30,000+ users Locked	Timothy Guy 3 Dec 2010	Ricardo Caiado 4 Dec 2010	8
	Most Secure Permissions of Moodle Files Locked	Timothy Takemoto 13 Dec 2005	nabil Lachheb 13 Mar 2011	10
	Standard Apache Settings? mod_become and "as root" Locked	Timothy Takemoto 22 Nov 2005	Timothy Takemoto 23 Nov 2005	4
	Disk space of one profile Locked	Timo Kozlowski 26 June 2006	Timo Kozlowski 26 June 2006	0
	Initial moodle setup Locked	Tim David 1 Apr 2023	Visvanath Ratnaweera 6 Apr 2023	8
	Recent Degredation on Moodle Performance Locked	Tim Gildersleeve 15 Jan 2020	Tim Gildersleeve 16 Jan 2020	5
	Bad RAM-use performance from get_records [MDL-66327] Locked	Tim Hunt 6 Aug 2019	Andrew Lyons 8 Aug 2019	1
	How to interpret MySQL-Tuner Perl results? Locked	Tim Kamps 15 Aug 2017	Tim Kamps 15 Aug 2017	6
	Two suggestions for when you are running your load tests Locked	Tim Hunt 5 Oct 2016	Tim Hunt 8 Oct 2016	5
	Performance of the Assignment tool Locked	Tim Hunt 1 Mar 2016	Tim Hunt 1 Mar 2016	0
	Newbie ? - Short video clip storage Locked	Tim Edsell 6 Feb 2015	Tim Edsell 6 Feb 2015	0
	Proposal to turn on quiz auto-save by default Locked	Tim Hunt 7 Oct 2014	Tim Hunt 7 Oct 2014	0
	If anyone else having performance problems with Locally assigned roles Locked	Tim Hunt 25 Sept 2014	Tim Hunt 25 Sept 2014	0
	Moodle 2.6 performance :-) Locked	Tim Hunt 26 Apr 2014	Mathew Gancarz 26 Apr 2014	1
	Moodle 2.5 performance testing at the OU Locked	Tim Hunt 16 Nov 2013	Tim Hunt 19 Feb 2014	17
	Moodle 2.4 performance Locked	Tim Hunt 3 May 2013	Michael Haskell 21 June 2013	10
	Problems with cron after upgrading to 2.1.x -> 2.2.x Locked	Tim Hunt 3 Apr 2012	Tim Hunt 11 Apr 2012	3
	New section in the coding guidelines about performance Locked	Tim Hunt 26 Nov 2009	Tim Hunt 26 Nov 2009	0
	New platform for deploying Moodle Locked	Tim Hunt 28 June 2009	Tim Hunt 28 June 2009	0
	THe best program for Video conferencing in MOODLE??? Locked	Tim Fanning 30 Apr 2009	Manuel Padilla Heredia 2 May 2009	3
	VMWare: Any problems with ESX? Locked	Tim Nelson 13 Feb 2007	Taylor Judd 5 Nov 2008	7
	Apache performance issues Locked	tim harrison 29 Aug 2006	tim harrison 1 Sept 2006	6
	Pros and cons of different architectures Locked	Tim Thomas 28 Aug 2006	Brett Drinkwater 1 Sept 2006	11
	Resource URLs Locked	Tim Howarth 10 Jan 2006	Tim Howarth 10 Jan 2006	0
	Very strange problem with file sizes and PHP Locked	Tim Allen 16 May 2005	Tim Allen 16 May 2005	2
	PHP 5 and acceleration Locked	Tim Allen 20 Apr 2005	Genner Cerna 20 Apr 2005	1
	Serious Server Problem: Help Greatly Appreciated Locked	Tim Allen 8 Sept 2004	Tim Allen 8 Sept 2004	3
	Which Redhat? Locked	Tim Allen 9 Jan 2004	Al Futrell 16 Jan 2004	3
	Becoming my own sysadmin Locked	Tim Allen 17 Dec 2003	Tim Allen 18 Dec 2003	20
	Sudden Proxy Error, no recent system changes Locked	Tiffany Morgan 14 May 2019	Howard Miller 26 Feb 2020	10
	VMWare for Moodle 2.2 Locked	Tiffany Morgan 25 Apr 2012	Visvanath Ratnaweera 26 Apr 2012	6
	User peformance based on platform Locked	Tiffany Morgan 8 Apr 2009	Tiffany Morgan 16 Apr 2009	11
	Set up Moodle for 4000 users on Linux for my university Locked	Tien Do 31 May 2021	Visvanath Ratnaweera 8 June 2021	11
	Improve performance in moodle 2.0.2 Locked	Tiago Santos 18 Mar 2011	Visvanath Ratnaweera 23 Mar 2011	8
	CPU Problems Locked	Tiago Fischer 13 July 2007	Matt Gibson 31 Oct 2007	8
	moodle system going down/getting stuck very often Locked	thulasi raman 13 Dec 2011	Visvanath Ratnaweera 11 Jan 2012	5
	Ad hoc Tasks and Performance Locked	Thorsten Bieser 29 Apr 2020	Thorsten Bieser 30 Apr 2020	2
	"Memcache" cache store what data is cached? Locked	Thorsten Bieser 8 June 2016	Thorsten Bieser 9 June 2016	4
	HTTP Error 500.0 - Internal Server Error Locked	Thomas College 30 Sept 2021	Heather P 5 Sept 2022	4
	[Moodle 3.10] Login Performance Locked	Thomas Renard 27 Dec 2020	Thomas Renard 4 Jan 2021	7
	[3.8] - PHP memory limit / cache problem / shared hosting Locked	Thomas Renard 19 Jan 2020	Howard Miller 20 Jan 2020	1
	[3.8] - ERR_EMPTY_RESPONSE Locked	Thomas Renard 12 Jan 2020	Thomas Renard 14 Jan 2020	3
	[3.8] - Syntax error from error_log (Admin/cli) Locked	Thomas Renard 6 Jan 2020	Howard Miller 7 Jan 2020	4
	problems with PHP and eAccelerator installed from yum Locked	Thomas Haines 24 Aug 2009	Thomas Haines 24 Aug 2009	0
	Windows Vista --Vs-- Windows XP Locked	Thomas Saccardi 28 Jan 2009	Thomas Saccardi 28 Jan 2009	0
	Moodle Cluster Apache crashes Locked	Thomas Haines 6 Nov 2008	Thomas Haines 11 Nov 2008	8
	SCORM responsiveness - too slow. Locked	Thomas Tyson 19 June 2008	Todd Thornton 10 July 2008	2
	Using Fantastico to Move moodle to New URL Locked	Thomas Bray 14 June 2005	Thomas Bray 4 July 2005	3
	Requested Range Not Satisfiable Locked	Thomas Haynes 1 Dec 2004	Thomas Haynes 5 Jan 2005	24
	Low Cost Moodle ISPs With Fantastico Locked	Thomas Bray 31 Aug 2004	Forrest Nelson 8 Sept 2004	2
	Servers and Hosting Locked	Thomas Bray 4 May 2004	James Sangster 13 May 2004	3
	OT: Netmondo database outages Locked	Thomas Bray 12 Apr 2004	Don Hinkelman 13 Apr 2004	1
	Running Slow Locked	Thomas Bray 2 Apr 2004	Thomas Bray 2 Apr 2004	0
	Server Does Not Support JPEG Locked	Thomas Bray 23 Feb 2004	Marcus Green 26 Feb 2004	15
	Smaller Quizes Locked	Thomas Bray 23 Feb 2004	Ger Tielemans 28 Feb 2004	4
	Issues With Fantastico Locked	Thomas Bray 22 Feb 2004	NetMondo Web Services 23 Feb 2004	2
	Recent problems at Netmondo? Locked	Thomas Bray 22 Feb 2004	Don Hinkelman 23 Feb 2004	15
	sudden slowdown Locked	Thomas Haynes 18 Sept 2003	Thomas Haynes 26 Sept 2003	7
	Moodle 3.11 Dashboard performance with completion tracking enabled Locked	Thom Rawson 13 Nov 2021	Emma Stone 21 Jan 2023	6
	Moodle 2.0 - Mysterious Speed-up? Locked	Thom Stricklin 11 Jan 2012	Thom Stricklin 12 Jan 2012	3
	How to scale Moodle in my case Locked	Thinh Dang 14 Apr 2020	Howard Miller 15 Apr 2020	1