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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
	Health Tool Locked	Rory Peacock 14 Oct 2013	Rory Peacock 14 Oct 2013	0
	Significant slow down on login Locked	david english 10 Oct 2013	Visvanath Ratnaweera 14 Oct 2013	6
	Jmeter again, different results Locked	Albert Ramsbottom 10 Oct 2013	Mathew Gancarz 11 Oct 2013	1
	Can I built moodle site with EasyPHP+windows server2003+moodle2.5.2 Locked	rui zeng 10 Oct 2013	rui zeng 10 Oct 2013	0
	Error when testing moodle using JMeter Locked	Albert Ramsbottom 7 Oct 2013	Albert Ramsbottom 8 Oct 2013	4
	Question re using linux TOP and associating PID with process/task Locked	Susan Mangan 5 Oct 2013	Susan Mangan 10 Oct 2013	5
	20+ language packs installed - bad for performance? Locked	Judy Hsu 4 Oct 2013	Tim Hunt 4 Oct 2013	1
	Please help me configure mysql for large Moodle site. Locked	Doctor J.W. Müller 3 Oct 2013	jason everling 4 Oct 2013	1
	Hardware requirement for moodle Locked	Mohan kumar 1 Oct 2013	Emma Richardson 7 Oct 2013	8
	Hardware for 1400 users Locked	Tobias Ceglarek 1 Oct 2013	jason everling 2 Oct 2013	1
	Moodle performance in hosted environement Locked	Alan Kmiecik 30 Sept 2013	Alan Kmiecik 30 Sept 2013	0
	play video in mobile not play Locked	laww m 29 Sept 2013	laww m 29 Sept 2013	0
	Moodle 2.5.2 for Windows loading very slow Locked	Pippo Pioppo 27 Sept 2013	Pippo Pioppo 27 Sept 2013	0
	Activated caching (memcached) produces segmentation faults Locked	franz reitinger 27 Sept 2013	Matteo Ricci 30 Sept 2013	4
	Plugin Error Locked	Freddie Batista 27 Sept 2013	Freddie Batista 27 Sept 2013	0
	Unofficial (?) preview of Moodle 2.6 performance Locked	Justin Filip 27 Sept 2013	Justin Filip 27 Sept 2013	0
	System Locking up with more than a dozen users Locked	Mark Hardwick 26 Sept 2013	Mark Hardwick 10 Oct 2013	17
	Major Performance Issues 2.4.3 (Need Help) Locked	Rory Peacock 26 Sept 2013	Ken Task 26 Sept 2013	1
	Apache processes Locked	Albert Ramsbottom 25 Sept 2013	Howard Miller 25 Sept 2013	1
	character encoding pound signs Locked	dan attwood 25 Sept 2013	Guillermo Madero 27 Sept 2013	4
	Error Reading Database Moodle 2.51 Locked	Kevin Miller 23 Sept 2013	Usman Asar 24 Sept 2013	1
	Moodle 1.9 migrated site EXTREMELY SLOW Locked	Doctor J.W. Müller 20 Sept 2013	Adam Durana 24 Sept 2013	3
	Many php-cgi processes brings down moodle, more resources needed? Locked	Paul Lindgreen 19 Sept 2013	Paul Lindgreen 25 Sept 2013	7
	How to (really) delete fake accounts? Locked	David Dunn 19 Sept 2013	David Dunn 19 Sept 2013	0
	Too many moodle precesses Locked	Ralph Ballier 18 Sept 2013	Ralph Ballier 19 Sept 2013	1
	Moodle 2.5.2 Site page loads for admin user Locked	Daniel Mc Sweeney 13 Sept 2013	Haakon Meland Eriksen 16 Oct 2013	2
	Performance on Dreamhost VPS Locked	Jorge Ballesteros 12 Sept 2013	Usman Asar 22 Sept 2013	6
	Issues installing APC on shared server Locked	Shirley Berry 12 Sept 2013	Shirley Berry 13 Sept 2013	8
	What would you buy? Locked	Eric Hagley 11 Sept 2013	jason everling 27 Mar 2014	21
	Minimum Hardware Locked	Claire Holland 10 Sept 2013	Visvanath Ratnaweera 13 Sept 2013	4
	3 options for Moodle database cluster Locked	CP Lau 10 Sept 2013	CP Lau 6 Jan 2014	13
	Better location for moodledata directory? Locked	hugo joe 10 Sept 2013	jason everling 10 Sept 2013	1
	Server suddenly uses all memory resources. Locked	Arnold Lamont 9 Sept 2013	Arnold Lamont 9 Sept 2013	0
	Super slow site Locked	Eugene Voevodin 6 Sept 2013	Eugene Voevodin 6 Sept 2013	0
	2.4.5+ (Build: 20130712) - intermittent performance issues Locked	Susan Mangan 5 Sept 2013	Samuel Witzig 17 Sept 2013	10
	What makes the "Teaching with Moodle" MOOC course work so well? Locked	Rick Jerz 2 Sept 2013	Anna Jonna Ármannsdóttir 28 Nov 2013	14
	local mysql vs remote server Locked	Yedidia Klein 2 Sept 2013	Tim Hunt 10 Sept 2013	1
	Restoring courses is slow, php settings advice Locked	Rick Jerz 30 Aug 2013	Rick Jerz 5 Sept 2013	7
	Hardware Architecture of Moodle (moodle.org) Site Locked	Usman Asar 30 Aug 2013	Guillermo Madero 31 Aug 2013	3
	Moodle crash error Locked	Vic Vicenzi 28 Aug 2013	Vic Vicenzi 31 Aug 2013	7
	My Moodle 2.5.1 is performing very slowly Locked	Richard Solomon 25 Aug 2013	J S 25 Aug 2013	2
	Moodle 2.5.1 running slow -- with troubleshooting details Locked	Megan Hayes-Golding 23 Aug 2013	Howard Miller 27 Aug 2013	6
	Moodle causing httpd service to hog CPU Locked	Ash Roach 22 Aug 2013	Ash Roach 22 Aug 2013	0
	Changing session.save_path Locked	m M 21 Aug 2013	Peter Kehl 16 Sept 2014	2
	Moodle 2.4.5 vs 2.5.1 performance and MUC APC cache store Locked	Justin Filip 21 Aug 2013	Justin Filip 24 Sept 2013	5
	Moodle work very slow and Apache crash down Locked	Aurimas J 20 Aug 2013	Aurimas J 21 Aug 2013	4
	Moodle arquitecture - AWS Locked	Julian Agudelo 17 Aug 2013	Riady Santoso 20 June 2014	10
	Memcache Configuration Locked	Mark Williams 16 Aug 2013	jason everling 27 Aug 2013	8
	Size problems: files not cleaned Locked	David Dunn 13 Aug 2013	Guillermo Madero 16 Aug 2013	15
	moodle 2.5 performance Locked	Sanjay Pandey 6 Aug 2013	Sanjay Pandey 6 Aug 2013	0
	Moodle 2.51 clean install much slower than Moodle 2.3.2 clean install Locked	Sam Mudle 5 Aug 2013	Sam Mudle 5 Aug 2013	0
	M 2.5.1, running very, very slow Locked	Guillermo Madero 3 Aug 2013	Guillermo Madero 30 Aug 2013	28
	Google Page Speed Insights updated Locked	David Scotson 2 Aug 2013	David Scotson 12 Aug 2013	4
	Moodle 2.5.1 running slow on any machine I use Locked	Sergiu Lazarescu 1 Aug 2013	Sergiu Lazarescu 1 Aug 2013	0
	Poor performance on Windows virtual server Locked	Scott Christy 1 Aug 2013	AL Rachels 6 Sept 2013	17
	Recommended Load Balancing algorithms for moodle Locked	m M 30 July 2013	Anna Jonna Ármannsdóttir 29 Nov 2013	7
	Performance issue over WAN Locked	vedkumar gupta 26 July 2013	vedkumar gupta 26 July 2013	0
	/mod/quiz/view.php progressively slower Locked	brian shore 26 July 2013	Tim Hunt 26 July 2013	1
	Training deployment in Moodle Locked	Kaustav Pramanik 25 July 2013	Kaustav Pramanik 25 July 2013	0
	Moodle-data storage advice needed for SAN Locked	Albert Ramsbottom 24 July 2013	jason everling 31 Aug 2013	29
	multi hosting/vps server expert required Locked	Sarah Jane 23 July 2013	Visvanath Ratnaweera 10 Aug 2013	1
	Moodle with clustered DB replication issues Locked	Rubén Romero 22 July 2013	Rubén Romero 24 July 2013	2
	JMeter and Moodle login Locked	Daniela Dragone 16 July 2013	CoreDev Develop 2 Aug 2013	2
	memcached Store not ready Locked	Peter Dorman 12 July 2013	Peter Dorman 25 Aug 2015	7
	Moodle High Availability needed Locked	Web Developer 11 July 2013	jason everling 16 July 2013	4
	Apache JMeter stress test for Moodle Questionaire Locked	CoreDev Develop 10 July 2013	CoreDev Develop 2 Aug 2013	4
	moodle cachestore_file Locked	Johan Loubser 8 July 2013	Tim Hunt 13 Aug 2013	11
	Table Locking? Locked	Andy Byers 5 July 2013	Luis de Vasconcelos 24 Oct 2014	9
	MySQL Database Master/slave replication and other thoughts Locked	Michael Hughes 5 July 2013	Dmitriy Kuzevanov 30 Sept 2016	16
	Questionnaire is very slow when access by 100 users Locked	CoreDev Develop 3 July 2013	CoreDev Develop 4 July 2013	4
	Moodle High Availability and failed over Locked	CoreDev Develop 2 July 2013	CoreDev Develop 27 Sept 2013	19
	What is the correct MUC setting for running Moodle 2.4.4+ in a clustering environment? Locked	CP Lau 2 July 2013	CP Lau 15 July 2013	2
	Help! Cannot log in - error writing to database Locked	Henry Foster 30 June 2013	Peter Dorman 24 July 2013	3
	Moodle 2.4 Hardware and Performance Optimization Locked	Brett Cairns 28 June 2013	Brett Cairns 3 July 2013	2
	Using SPDY with Moodle? Locked	David Scotson 26 June 2013	David Scotson 26 June 2013	0
	Hardware requirements for a Moodle-medium size in CenTOS Locked	Mari Cruz García 25 June 2013	Mari Cruz García 2 July 2013	6
	Moodle very slow or not responding Locked	Hansruedi (Lori) Lorenz 22 June 2013	Rick Jerz 29 June 2013	17
	Moodle Performance Testing in AWS Locked	Brett Cairns 20 June 2013	Grant Mucha 5 July 2013	5
	Performance hit on 2.5 upgrade for admin users Locked	John Porten 20 June 2013	Guillermo Madero 30 Aug 2013	8
	New Server for our VLE Locked	Jan Grabowski 12 June 2013	M O Faruque Sarker 24 June 2013	1
	Moodle and Wordpress Server farm/cluster Locked	Paul Garratt 10 June 2013	Albert Ramsbottom 19 Nov 2013	4
	Hardware and Performance Locked	Junaid Vindhani 10 June 2013	Junaid Vindhani 10 June 2013	0
	3 things to do to enhance speed. Locked	Sarah Jane 7 June 2013	David Scotson 17 July 2013	5
	Infraestructure to Moodle with 80000 users Locked	Henrique Brites 5 June 2013	Vijay N 5 June 2013	1
	Where to start choosing a server spec for moodle 2.# Locked	Tom Moseley 5 June 2013	Tom Moseley 5 June 2013	0
	Profile pictures loads very slow on Moodle 2.2 Locked	Mats Johansson 29 May 2013	Mats Johansson 29 May 2013	2
	Load Balanced and Auto-Scalling with Amazon EC2 Locked	Bobby Kneisel 22 May 2013	jason everling 6 June 2013	3
	Web Server for 100,000 users Locked	Nir Karniel 22 May 2013	Visvanath Ratnaweera 23 May 2013	16
	Hardware and Load Balancing Discussion Locked	Matthew Orlando 20 May 2013	J S 24 May 2013	1
	increasing speed of searching courses Locked	Vijay N 20 May 2013	Vijay N 20 May 2013	0
	Databases connection error Locked	selim aktar khan 15 May 2013	Fernando Rocha 18 May 2013	2
	High CPU wait time Locked	Corey Brett 8 May 2013	Corey Brett 9 May 2013	3
	Problem with Alignment of buttons and quiz module when accessed through Loadbalancer IP Locked	shrikant gakhare 8 May 2013	shrikant gakhare 15 May 2013	4
	2.4.3 Performance issues - session locks Locked	Susan Mangan 4 May 2013	Susan Mangan 10 May 2013	20
	Moodle 2.4 performance Locked	Tim Hunt 3 May 2013	Michael Haskell 21 June 2013	10
	Move away from eaccelerator for your opcode cache needs Locked	Dan Poltawski 1 May 2013	Marcelon Hack 16 July 2014	3
	What Virtual Host Server Do You Use? Locked	Richard B 28 Apr 2013	Visvanath Ratnaweera 30 Apr 2013	7
	problem with moodle 2, pgpool2 and 2 postgres 9.0 Locked	pablo saldivia 26 Apr 2013	pablo saldivia 30 Apr 2013	3
	Recommendations needed for improving performance Locked	cesar correa 26 Apr 2013	cesar correa 26 Apr 2013	2
	Bulk Answer for Setup Locked	jason everling 24 Apr 2013	jason everling 30 May 2013	2