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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
	Gourp assignment grading performace issues Locked	Juha Martikainen 10 Oct 2017	Howard Miller 10 Oct 2017	1
	Network Latency and AWS Locked	Clarissa S 8 Feb 2017	Santhosh Kumar T 7 Oct 2017	4
	Minimum hardware requirements for 1000+ users. Locked	Arnel Jr. Rubiano 8 Aug 2017	Arnel Jr. Rubiano 6 Oct 2017	8
	Hardware for 3000 users please advise Locked	Kompli Tivi 19 Aug 2017	Tawfik Daim 3 Oct 2017	2
	Slow file download and playing SCORM videos Locked	Sali Kaceli 7 Oct 2016	Nelson Moller 2 Oct 2017	14
	Hardware in large scal Locked	wahid Anwar 10 July 2017	Tawfik Daim 2 Oct 2017	7
	High CPU load during quizzes Locked	Henry Woolard 22 Sept 2017	Chris Kenniburg 29 Sept 2017	7
	Topology perrformance and architecture Locked	Melchoir Philip 29 Sept 2017	Melchoir Philip 29 Sept 2017	0
	Redis session caching locks? Locked	Vaesar Rodriguez 30 Aug 2017	Vaesar Rodriguez 29 Sept 2017	3
	Lock wait timeout and Get_Lock slow queries Locked	KK. Morrissey 27 Sept 2017	Ken Task 27 Sept 2017	4
	Server configuration for approx 4500 users Locked	S. kavita 26 Sept 2017	S. kavita 26 Sept 2017	0
	Server for 1500 users Locked	Lorenzzo Mollinar 29 Aug 2017	Chris Kenniburg 25 Sept 2017	2
	Moodle slow when logging in and navigating to home. Locked	Theunis Victor 20 Sept 2017	Ken Task 22 Sept 2017	5
	Very slow login time Locked	Christian Kristiansen 1 Sept 2017	Flemming Bornemann 15 Sept 2017	18
	150 concurrent users to do test Locked	Peter Stapfer 5 Sept 2017	Howard Miller 9 Sept 2017	5
	Installing moodle app server with separate db server Locked	Arnel Jr. Rubiano 30 Aug 2017	Arnel Jr. Rubiano 5 Sept 2017	4
	Large Scale Moodle server and apps for technical practicals Locked	Melchoir Philip 4 Sept 2017	Melchoir Philip 4 Sept 2017	2
	moodle mysql master-master replication Locked	jhon grenn 1 Sept 2017	jhon grenn 4 Sept 2017	2
	How to interpret MySQL-Tuner Perl results? Locked	Tim Kamps 15 Aug 2017	Tim Kamps 15 Aug 2017	6
	Hosting for small moodle? Locked	Dan Tose 16 Aug 2017	Helen Foster 16 Aug 2017	1
	SSD as Cache vs Stand Alone Locked	Kompli Tivi 11 Aug 2017	Kompli Tivi 12 Aug 2017	2
	Session Handling Problem Locked	Aditya Dubay 10 Aug 2017	Jeff White 11 Aug 2017	4
	Moodle using mulitple DB readers and 1 writer? Locked	Christos Savva 2 Aug 2017	Jeff White 5 Aug 2017	4
	Moodle caches for application are changing without notice? Locked	Christos Savva 28 July 2017	Christos Savva 4 Aug 2017	3
	Slow Moodle performance net::ERR_INCOMPLETE_CHUNKED_ENCODING Event Monitor Locked	Joël Schmid 19 Oct 2016	Joël Schmid 3 Aug 2017	3
	Setup Moodle with DynamoDB Locked	Liam M 21 Oct 2016	Michael Penney 30 July 2017	3
	Moodle Performance Issues (Load Balancer / Cluster) (Willing to Pay for Help) Locked	Amber Lynn 15 Feb 2017	Christos Savva 29 July 2017	15
	Moodle Cache Changes Locked	Callum Laverick 25 July 2017	Callum Laverick 28 July 2017	18
	Deploying Moodle 3.3 on an IIS cluster. Locked	Joe Cape 20 July 2017	Joe Cape 25 July 2017	4
	JMeter trouble Locked	Bernat Martinez 7 July 2017	Bernat Martinez 21 July 2017	2
	cannot purge standard log in Moodle 3.1 although set keep standard log only for 5 days Locked	William Chan 15 July 2017	Jeff White 20 July 2017	2
	MySQL server has gone away when trying to delete course Locked	Mateusz Szuter 14 July 2017	Mateusz Szuter 18 July 2017	7
	System Hangs a lot after installing Moodle Locked	Grzegorz Szorc 15 Mar 2017	Stefan Adam 18 July 2017	4
	Is Moodle using the MySQL sys schema? Locked	Sergey Kinash 16 July 2017	Sergey Kinash 17 July 2017	2
	Getting Inconsistent data from multi-node memcached cluster AWS Elasticache Locked	priye ranjan 15 July 2017	Howard Miller 16 July 2017	1
	Scorm Packages Upload and Duplicate Issue Locked	Muhammad Ammar` Ijaz 11 July 2017	Muhammad Ammar` Ijaz 11 July 2017	2
	CPU overloaded Locked	Bernat Martinez 3 July 2017	Bernat Martinez 6 July 2017	6
	MySQL Performance for Moodle Locked	Jonathan V 21 Jan 2017	Tavi Al 4 July 2017	10
	Moodle Running So Slow Locked	christian orvin 3 July 2017	Howard Miller 4 July 2017	3
	quiz - advise needed Locked	jhon grenn 11 June 2017	jhon grenn 28 June 2017	6
	Jmeter Regular Expression Extractor for "sesskey" Locked	Arabinda P 27 June 2017	Tim Hunt 28 June 2017	3
	Is 371ms within an acceptable range for time to download the dashboard on a new installation? Locked	Corey Brett 24 June 2017	Mathew Gancarz 27 June 2017	2
	Configuring PHP-FPM for performance Locked	Heiko Schach 15 May 2017	Corey Brett 26 June 2017	5
	Quiz timer starts before first page loads (Moodle 2.7.19) Locked	Simon Cheng 24 June 2017	Mary Cooch 24 June 2017	2
	Email problem? System slow to create users or complete tests Locked	Stuart Ridout 19 June 2017	Jamie Kramer 21 June 2017	1
	Clustered file system for Moodledata Locked	Jeff White 21 June 2017	Jeff White 21 June 2017	0
	Caching the moodledata directory Locked	Roland Chapin 23 May 2017	Jeff White 16 June 2017	3
	Could not handle 60 requests at a time for online quiz Locked	Santhosh Chandra 10 June 2017	Usman Asar 11 June 2017	2
	Server Hardware Requirement for 300 User Locked	Aditya Gautam 24 Apr 2017	James Steerpike 10 June 2017	14
	Postgresql performance slow Locked	David Vishloff 10 June 2017	David Vishloff 10 June 2017	0
	I AM TERRIFIED : MOODLE IS VERY SLOW ! Locked	fleu risseur 3 Apr 2015	Marcel Matschke 1 June 2017	33
	Performance stuck in 250 Concurrent request / second Locked	Pupil Senpro 26 May 2017	Abbie Abbey 30 May 2017	7
	Errors in apache2 log - is this normal? Locked	Conor Bradley 25 May 2017	Conor Bradley 25 May 2017	2
	bar code login Locked	Mahir M Hameed 15 May 2017	AL Rachels 17 May 2017	2
	All admin features causing 504 timeouts Locked	r j 10 May 2017	r j 10 May 2017	1
	Dev server performance tips (Windows) Locked	Ole Frank Jensen 8 May 2017	Ole Frank Jensen 10 May 2017	7
	Moodle 3.2.2 on Shared Hosting Locked	Fred Cole 26 Apr 2017	Rick Jerz 28 Apr 2017	8
	A moodle setup for 2K simultaneous users taking quiz Locked	Mahir M Hameed 30 Mar 2017	John Papworth 26 Apr 2017	13
	"Slow" render Times not under 1.2 sek Locked	Marcel Matschke 11 Apr 2017	Marcel Matschke 22 Apr 2017	13
	basic performance tuning Locked	Fabienne Neveu 4 Apr 2017	Fabienne Neveu 20 Apr 2017	7
	Failover moodle server Locked	dwi sudibyo 13 Apr 2017	dwi sudibyo 14 Apr 2017	4
	Courses for 6000 students Locked	Lorenzzo Mollinar 11 Apr 2017	Usman Asar 11 Apr 2017	1
	Moodle not accessible after purging cache! Locked	Anirudh Phadke 11 Apr 2017	Anirudh Phadke 11 Apr 2017	2
	Moodle not detecting the hardware devices? Locked	Simon Casey 8 Apr 2017	Howard Miller 8 Apr 2017	1
	Configuring Server for 9000 users Locked	Luca Viggiani 6 Apr 2017	Howard Miller 7 Apr 2017	3
	500 Internal Server Errors on saving pages Locked	Conrad Murray 30 Mar 2017	Howard Miller 30 Mar 2017	1
	Assignment Submission Taking over 5 minutes Locked	Brandon Stocks 27 Mar 2017	Brandon Stocks 29 Mar 2017	2
	"what hardware do I need for 500 user?" Locked	Davis Parni 22 Mar 2017	Howard Miller 23 Mar 2017	5
	handling static contents with apache mod_cache_disk Locked	Julien Boulen 20 Mar 2017	Julien Boulen 20 Mar 2017	0
	Cron task making httpd irresponsive? Locked	Luca Bösch 27 Feb 2017	Paul Verrall 20 Mar 2017	5
	Moodle grader report editing extremely slow Locked	Debbie Unterseher 11 Feb 2017	Debbie Unterseher 14 Mar 2017	18
	Central Moodle instance sync to local instance - updated Locked	Paa Kwesi 25 Jan 2017	Paa Kwesi 13 Mar 2017	14
	Hardware issues with Moodle Locked	Nduka S Okoye 10 Mar 2017	Usman Asar 11 Mar 2017	2
	Moodle For 10000 concurrency especially for Quiz Locked	Shyam Jadala 6 Mar 2017	Shyam Jadala 7 Mar 2017	12
	Slow writing speed to Postgres Database Locked	Acs Gabor 27 Feb 2017	Acs Gabor 1 Mar 2017	2
	pluginfile.php performance and session locking Locked	Dominique LALOT 16 Feb 2017	Dominique LALOT 24 Feb 2017	2
	Extreamly slow self-enrollment Locked	Marjan Milošević 23 Feb 2017	Marjan Milošević 24 Feb 2017	1
	Proposal: Reduce session lock contention with opt-in READ_ONLY_SESSION Locked	Adam Eijdenberg 21 Feb 2017	Tim Hunt 22 Feb 2017	3
	Problem of performance Locked	mimi nom 20 Feb 2017	mimi nom 21 Feb 2017	4
	Student Profile Data (Default) Not Updating Locked	Troy May 15 Feb 2017	Troy May 19 Feb 2017	6
	Event Monitoring Performance Locked	Michael Hughes 18 Feb 2015	Dirk Meyer 16 Feb 2017	10
	Can moodle serve huge numbers of users? Locked	Ahmed Ibrahim 17 Jan 2017	Dan Marsden 15 Feb 2017	9
	MongoDB: Invalid Plugin Locked	Douglas Rosa 9 Feb 2017	Douglas Rosa 9 Feb 2017	2
	JSON error when uploading a file Locked	David Bates 1 Feb 2017	James McLean 2 Feb 2017	5
	moodle 3.x and bluehost shared hosting incompatibility? Locked	spyros zoup 17 Jan 2017	Dan Rosenthal 30 Jan 2017	16
	Advice on moodle installation Locked	Mark Hamptom 25 Jan 2017	Mathew Gancarz 26 Jan 2017	2
	Moodle 2.8.6 site running extremely slow Locked	Mark Baldwin 20 Jan 2017	Dan Marsden 23 Jan 2017	5
	moodle 3.1: 10x slower than 3.0.2 Locked	Martin Alexander 25 May 2016	Juan Gabriel Edu Labs 21 Jan 2017	10
	mdl_cache_flags slow in LnP Locked	Charu Khamitkar 13 Jan 2017	Tomasz Muras 18 Jan 2017	2
	How to sync local installation of Moodle and installation on a server onine Locked	Paa Kwesi 17 Jan 2017	Paa Kwesi 17 Jan 2017	4
	quiz for 150 students Locked	ziv izackov 16 Jan 2017	ziv izackov 16 Jan 2017	9
	Performance Tuning and Load Testing Locked	Indresh Vishwakarma 26 Oct 2016	Ricardo Caiado 13 Jan 2017	18
	Web Server + Database selection/preferences (Apache, MySQL?MariaDB, Nginx, PostgreSQL) Locked	Jerry Lau 22 Dec 2016	Ricardo Caiado 13 Jan 2017	6
	How to increse apache 2 and mysql performance and howmany users can give exam at a time in my ... Locked	lalit thakur 5 Jan 2017	Ricardo Caiado 13 Jan 2017	5
	HTTPS redirect loop through CloudFlare services Locked	Omer Magill 10 Jan 2017	Omer Magill 10 Jan 2017	1
	Server crash during chat wtih 2 other persons Moodle 2.4.3 Locked	Gary Lebowitz 11 Nov 2015	Emma Richardson 6 Jan 2017	11
	Software Version Vs. performance Question Locked	Mr. Marc 6 Jan 2017	Mr. Marc 6 Jan 2017	2
	Question about Redis Cluster Failover Locked	Jeff White 6 Jan 2017	Jeff White 6 Jan 2017	0
	MySQL CPU - Moodle Locked	A J 21 Dec 2016	Howard Miller 4 Jan 2017	14
	memcached usage in clustered environment - replication questions Locked	Niels Hendriks 27 Dec 2016	Niels Hendriks 1 Jan 2017	2