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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
	Is 24GB or RAM for database server enough + moodledata storage design Locked	Jerry Lau 14 Apr 2018	Visvanath Ratnaweera 16 Apr 2018	4
	Nginx or Apache with PHP 7.1.8? Locked	Jerry Lau 15 May 2018	Ken Task 15 May 2018	1
	JMeter "Out of Memory” Failure Locked	Jerry Lau 31 May 2018	Jerry Lau 31 May 2018	2
	Speeding up Moodle - reindexing entire database would help? Locked	Jerry Lau 26 Sept 2018	Howard Miller 27 Sept 2018	6
	Quizzes are rending Moodle useless :-( Locked	Jerry Lau 27 Sept 2018	Jerry Lau 25 Nov 2018	37
	What do these stats mean in footer Locked	Jerry Lau 28 Sept 2018	AL Rachels 21 Oct 2018	7
	Can I modify the .cnf files, delete the innodb files and restart? Locked	Jerry Lau 1 Oct 2018	Howard Miller 1 Oct 2018	1
	Might have found the cause of slowness in DB Locked	Jerry Lau 3 Oct 2018	Visvanath Ratnaweera 11 Oct 2018	7
	What does "automated backup are already running. Execution delayed"? Locked	Jerry Lau 15 Oct 2018	Visvanath Ratnaweera 21 Oct 2018	2
	List of safe to cache URLs? Locked	Jess Shannon 26 Mar 2021	Jess Shannon 26 Mar 2021	0
	My hosting is upgrading to MySQL 5, is my Moodle 1.5.4 site OK? Locked	Jesse Thorstad 2 Oct 2006	James Dugal 6 Oct 2006	5
	What Hardware and Software on you using on your campus to run Moodle? Locked	Jessica McKean 3 Oct 2007	Visvanath Ratnaweera 8 Oct 2007	5
	Really Slow Quiz Locked	Jessica Tranter 7 May 2016	Jessica Tranter 11 May 2016	11
	Student upload issues only on certain network Locked	Jessica Dawson 24 Jan 2019	Ken Task 26 Jan 2019	7
	Placement of custom php.ini within Moodle Locked	Jesus Padro 27 Mar 2009	Dakota Duff 27 Mar 2009	1
	MySQL configuration Locked	Jesús Martín 19 Jan 2010	Noveck Gowandan 19 Jan 2010	1
	Ubuntu 16.04 + Apache + X-SendFile not working (no images and scripts) Locked	Jesus Vte. Vila 8 Nov 2020	Jesus Vte. Vila 1 Sept 2021	6
	Moodle Performance Locked	Jet Batung Bakal 31 July 2009	Jet Batung Bakal 14 Aug 2009	4
	One Database and More Moodle Website Locked	Jet Batung Bakal 25 Aug 2009	Jet Batung Bakal 26 Aug 2009	4
	Speed UP Moodle! Help! Locked	Jet Batung Bakal 15 Sept 2009	Visvanath Ratnaweera 17 Sept 2009	3
	Help! Speep UP2! Locked	Jet Batung Bakal 16 Sept 2009	Jet Batung Bakal 16 Sept 2009	2
	Maintenance Concerns Locked	Jet Batung Bakal 6 Oct 2009	Jet Batung Bakal 9 Oct 2009	15
	Database MysQL Gui 5.0 and Postgres in the performance of moodle Locked	Jet Batung Bakal 12 Oct 2009	Jet Batung Bakal 12 Oct 2009	1
	Maintenance Concerns 2 Locked	Jet Batung Bakal 14 Oct 2009	Jet Batung Bakal 14 Oct 2009	2
	Database Load 1.8.1 Locked	Jez H 20 July 2007	Tim Hunt 4 Nov 2007	5
	Moving javaScript to bottom of page Locked	Jez H 1 Aug 2007	Jez H 1 Aug 2007	0
	Hanging before File Upload Locked	Jez H 3 Sept 2007	Jez H 3 Sept 2007	0
	VIewing Student Very Slow Locked	Jez H 3 Sept 2007	Samuli Karevaara 4 Sept 2007	8
	Apache Request Spikes Locked	Jez H 17 Oct 2007	Michael Spall 25 Oct 2007	3
	quiz - advise needed Locked	jhon grenn 11 June 2017	jhon grenn 28 June 2017	6
	moodle mysql master-master replication Locked	jhon grenn 1 Sept 2017	jhon grenn 4 Sept 2017	2
	"Print Book" option not working Locked	Jill Lee 29 Nov 2016	Emma Richardson 30 Nov 2016	1
	My Own Server Locked	Jim Eyster 7 Dec 2004	Marcus Green 23 Dec 2004	7
	Moodle 2.1.1 Updated Courses Locked	Jim Cook 15 Sept 2011	Visvanath Ratnaweera 15 Sept 2011	2
	Slow loading Moodle Course for Admin Locked	Jim Judges 20 Apr 2012	Grant Mucha 21 Apr 2012	4
	Any Moodle VPS suggestions? ($100/month price range) Medium Usage Locked	Jim Johnson 10 Nov 2014	Deleted user 27 Nov 2014	9
	Moodle website performance tuning Locked	jimmy Octavious 20 Dec 2010	Frankie Kam 13 Jan 2011	7
	Memory limit Locked	Jiri Zajic 25 Aug 2006	Iñaki Arenaza 31 Aug 2006	3
	Server hardware for 1000 concurrent users Locked	Jkail MOENE 31 July 2018	Albert Ramsbottom 31 July 2018	1
	Moodle Benchmarcking framework Locked	Joan Codina Filba 2 July 2005	Visvanath Ratnaweera 10 Mar 2006	8
	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
	2500 concurrence Users Locked	Joaquin Pretell 24 Oct 2019	Brian Merritt 31 Oct 2019	8
	Architecture for 5000 concurrence users Locked	Joaquin Alonso Pretell Kishimoto 25 Feb 2020	Visvanath Ratnaweera 25 Feb 2020	2
	dbpersist=true Locked	Joar Herseth 24 Sept 2003	Steve Dubois 28 Oct 2003	1
	Apache error log Locked	Joar Herseth 29 Sept 2003	Gustav W Delius 25 Oct 2003	2
	Cron job - 2 web servers - different schedule Locked	Job Céspedes Ortiz 17 Dec 2014	Andrew Lyons 17 Dec 2014	1
	Contradictory doc on cron jobs for web cluster Locked	Job Céspedes Ortiz 26 May 2015	Howard Miller 26 May 2015	1
	WHM & server transfer of Moodle sites Locked	jobe jobe 22 Apr 2008	jobe jobe 22 Apr 2008	0
	memory_limit - server error Locked	jobe jobe 12 June 2008	John Rodkey 6 Aug 2008	5
	what response time should I expect from a host? Locked	Jocelyn Graf 14 Aug 2006	Samuli Karevaara 15 Aug 2006	2
	Help!! Locked	Jodi Le Masurier 15 May 2012	Visvanath Ratnaweera 16 May 2012	10
	ISP has deleted moodle but not my database Locked	Jody Byrne 16 June 2006	Worth Bishop 16 June 2006	1
	Moodle Performance Concern Locked	Jody Florian 3 Dec 2010	Tim Hunt 4 Dec 2010	2
	Latest software recommendations Locked	Joe Griffin 18 Nov 2003	Art Lader 3 Dec 2003	9
	Host with MS-Access Locked	Joe Baud 19 June 2004	Howard Miller 23 June 2004	1
	Large scale Moodle Host Questions Locked	joe sumpter 16 Sept 2009	Lindley Bailey 22 Mar 2010	20
	Unable to edit quiz after upgrade from 2.7.3+ to 2.8.1+ Locked	Joe Chapman 3 Jan 2015	Ewout ter Haar 18 Aug 2015	42
	Are memcached cache tests always slower than file cache Locked	Joe Snuffy 14 Jan 2015	Jeff White 20 Jan 2015	8
	Deploying Moodle 3.3 on an IIS cluster. Locked	Joe Cape 20 July 2017	Joe Cape 25 July 2017	4
	Frequent deadlocks on SESSIONS table Locked	Joe Schmoe 16 Nov 2017	Joe Schmoe 12 Jan 2018	12
	Is there a way to estimate actual number of concurrent Moodle users? Locked	Joe Schmoe 22 Nov 2017	A. S. 5 Aug 2018	3
	posqresql update Locked	joel Green 16 July 2014	joel Green 16 July 2014	0
	Slow Moodle performance net::ERR_INCOMPLETE_CHUNKED_ENCODING Event Monitor Locked	Joël Schmid 19 Oct 2016	Joël Schmid 3 Aug 2017	3
	Problem with a load balancer in AWS Locked	Joel Szwarcbort 4 Nov 2019	Howard Miller 4 Nov 2019	1
	moodle cachestore_file Locked	Johan Loubser 8 July 2013	Tim Hunt 13 Aug 2013	11
	redis session lock performance Locked	Johan Loubser 30 July 2021	Albano A. 29 Dec 2021	3
	Upload speed requirement Locked	Johannes Solymosi 21 Aug 2010	Visvanath Ratnaweera 22 Aug 2010	7
	Faster connections in the near future Locked	John Gone 19 Oct 2003	Richard Watkins 20 Oct 2003	2
	PHP Byte Code Compiler in Moodle 1.2+ Locked	John Dell 6 May 2004	John Dell 9 May 2004	3
	Safe Mode and my server Locked	John Lyman 20 May 2004	Howard Miller 22 May 2004	1
	Moodle Performance of Various Servers Locked	John Cyber 4 June 2004	Leonhard Küllinger 2 Feb 2005	32
	Hosted Server Failed Locked	john attwood 18 Nov 2005	john attwood 18 Nov 2005	0
	Servers, RAID, failover, etc. Locked	John Donaldson 2 Mar 2006	CHENG Alan 27 Jan 2010	31
	1.7 plus FastCGI PHP Locked	john kuti 7 Dec 2006	Rick Boyce 9 Dec 2006	1
	Site responding quickly except for one thing... Locked	John Isner 25 Sept 2007	Steve Hyndman 25 Sept 2007	3
	Disk capacity for media rich system Locked	John Williams 10 Dec 2007	Matt Gibson 19 Dec 2007	5
	Server Network Connection Speed Locked	John Williams 8 Jan 2008	Tom Harold 23 Mar 2011	4
	Internal hosting versus external hosting Locked	John Skelton 27 Jan 2009	Tim Hunt 28 Jan 2009	4
	Hosted Linux moodle vs local Windows 2003 server Locked	John Bonner 28 Jan 2009	John Bonner 3 Feb 2009	4
	Will Moodle run well on a Zeus server? Locked	John Bonner 26 Aug 2009	John Bonner 5 Dec 2010	9
	Specs for Moodle Server running on Windows Server 2003 Locked	John McLernon 8 Dec 2009	Visvanath Ratnaweera 10 Dec 2009	1
	site logs Locked	John Roughley 11 June 2010	Bartosz Cisek 25 June 2010	1
	Question about file handling and Moodle 2.0 Locked	John Schilling 1 July 2010	Colin Fraser 31 Dec 2010	9
	Postgres cluster function Locked	John Coughlin 16 Aug 2010	John Coughlin 16 Sept 2010	5
	What are you running & support Locked	John Dlugosz 8 Dec 2010	Tim Hunt 11 Dec 2010	4
	Reducing size of MySQL ibdata1 file Locked	John Wells 17 June 2011	Taylor Judd 17 June 2011	1
	mysql gradebook performance poor Locked	John McNamara 20 June 2011	Tim Hunt 22 June 2011	3
	Application monitoring Locked	John Reese 31 Jan 2012	Visvanath Ratnaweera 31 Jan 2012	2
	Best Linux distro for Moodle Locked	John Araújo 11 Oct 2012	Visvanath Ratnaweera 11 Oct 2012	4
	Best Moodle version for Linux Server Locked	John Araújo 12 Oct 2012	Visvanath Ratnaweera 12 Oct 2012	2
	Performance hit on 2.5 upgrade for admin users Locked	John Porten 20 June 2013	Guillermo Madero 30 Aug 2013	8
	Moodle 2 Slow Admin login Locked	john jackson 26 Jan 2014	Valery Fremaux 26 Jan 2014	3
	installing an enroll plugin. dependancy problem. Locked	john Simpson 7 July 2014	john Simpson 8 July 2014	6
	Links not working Moodle 2.71 Locked	john Simpson 18 Aug 2014	Mary Cooch 21 Aug 2014	2
	Slow moodle (2.5.2) hosting ourselves on WIndows Locked	john allen 17 Sept 2014	Howard Miller 17 Sept 2014	2
	Mem Cache Locked	john allen 29 Sept 2014	Mari Cruz García 29 Sept 2014	3
	Slow page loads Locked	john allen 7 Oct 2014	john allen 14 Oct 2014	6
	MOODLE 2.7 RUNNING VERY VERY SLOW Locked	john whetton 14 Nov 2014	Rick Jerz 4 Feb 2015	9
	How have people spec'd thier environment? Locked	John Rickard 14 Apr 2016	Heather P 20 Apr 2016	1
	Settings for memcache for sessions cache - can't find a moodle doc Locked	John Joubert 30 May 2018	John Joubert 30 May 2018	1