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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
	Cron Execution can last 5+ hours Locked	Jamie E 21 Jan 2009	Martin Plummer 27 Oct 2009	10
	APC or XCache or eAccelerator Locked	HJWUCGA INC. 25 Aug 2009	Jörg S. 23 Oct 2009	6
	Question about a query pulled from MySQL slow query log Locked	Wen Hao Chuang 17 Oct 2009	Wen Hao Chuang 23 Oct 2009	17
	Hosting Server Storage limited Locked	Philip Nugent 22 Oct 2009	Philip Nugent 22 Oct 2009	0
	Sudden slowdown, seemingly related to get_user_access_sitewide() Locked	David Siebörger 13 Oct 2009	Juan Segarra Montesinos 21 Oct 2009	4
	Hardware requirements for 50k users and multimedia rich Flash courses Locked	Natarajan M 23 Sept 2009	Visvanath Ratnaweera 15 Oct 2009	2
	Maintenance Concerns 2 Locked	Jet Batung Bakal 14 Oct 2009	Jet Batung Bakal 14 Oct 2009	2
	Slow logins for users and possible solution Locked	Jason Cashel 13 Oct 2009	Jason Cashel 13 Oct 2009	1
	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
	how to increase concurrent conn. Locked	Khalil Al-Fulaiti 6 Oct 2009	Khalil Al-Fulaiti 10 Oct 2009	5
	Maintenance Concerns Locked	Jet Batung Bakal 6 Oct 2009	Jet Batung Bakal 9 Oct 2009	15
	Edit php or add htaccess file? Locked	Melissa Benson 1 Oct 2009	Marc Grober 9 Oct 2009	12
	Moodle site on Eukhost VPS Locked	neil hamilton 7 Oct 2009	neil hamilton 8 Oct 2009	3
	Pound rewrites "Location" header after logon Locked	Chris Fryer 14 Sept 2009	Ben Steeples 7 Oct 2009	4
	Page generation runs quickly, but... Locked	Shevchenko Dmitry 30 Sept 2009	Shevchenko Dmitry 2 Oct 2009	5
	moodle e dispositivos móveis Locked	everton santos 30 Sept 2009	everton santos 30 Sept 2009	0
	(Slow) Login Problems for Specific Users Locked	Sali Kaceli 16 June 2009	Sali Kaceli 29 Sept 2009	6
	Nagios - add check_mysql plugin install problem Locked	HJWUCGA INC. 25 Sept 2009	HJWUCGA INC. 25 Sept 2009	3
	Insert into log table failed Locked	Panyarak Ngamsritragul 27 June 2009	Séverin Terrier 24 Sept 2009	5
	ERROR: You need to create the directory /home/moodledata with web server write access Locked	Daniele Giunta 17 Dec 2003	Tim Hunt 23 Sept 2009	7
	VERY Slow HTTPS response Locked	Mark Johnson 14 Sept 2009	Jon Witts 21 Sept 2009	8
	Varnish Locked	Dan Poltawski 1 Aug 2008	Greg Lund-Chaix 19 Sept 2009	5
	Worldwide moodle Locked	Geoff Tothill 1 Aug 2009	Geoff Tothill 18 Sept 2009	3
	Local Access Problems. External Student Access Fine Locked	Laine Phillips 17 Sept 2009	Ken Gibson 17 Sept 2009	1
	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
	Is Shared Hosting Adequate? Locked	William Tan 3 Sept 2009	Ron Meske 11 Sept 2009	8
	MySQL Performance Tuning Locked	Sean Keogh 25 May 2004	Bala kumar 9 Sept 2009	2
	Moodle on a SYNOLOGY Disk Station Locked	Stefan Wagner 5 Sept 2009	Visvanath Ratnaweera 6 Sept 2009	1
	Concurrent user testing tools or methodology Locked	HJWUCGA INC. 4 Sept 2009	HJWUCGA INC. 4 Sept 2009	0
	Warning if the Moodle server / website is not working Locked	Michael Harrington 31 Aug 2009	Rosalyn Metz 3 Sept 2009	7
	EACCELERATOR: PHP crashed Locked	Morten Brydensholt 25 Sept 2008	Jim Coe 3 Sept 2009	2
	scalable architecture for moodle Locked	robert ngo 1 Sept 2009	robert ngo 1 Sept 2009	0
	Large Scale Moodle Implementation Help Locked	Bipin Das 15 July 2009	Justin Haaga 27 Aug 2009	7
	One Database and More Moodle Website Locked	Jet Batung Bakal 25 Aug 2009	Jet Batung Bakal 26 Aug 2009	4
	problems with PHP and eAccelerator installed from yum Locked	Thomas Haines 24 Aug 2009	Thomas Haines 24 Aug 2009	0
	How can I stress test my server? Locked	Kevin Audleman 30 Mar 2007	Michael Spall 20 Aug 2009	9
	Moodle Sites - Scaling and Architecture Locked	Alan Dawson 11 Aug 2009	Panyarak Ngamsritragul 19 Aug 2009	5
	What are hardware requirement to support 1000 access simultaneously Locked	rolio rolio 30 July 2009	Rob Duncan 18 Aug 2009	3
	Moodle Performance Locked	Jet Batung Bakal 31 July 2009	Jet Batung Bakal 14 Aug 2009	4
	More Performance Changing block_online_users.php Locked	Tadeu do Carmo Alves 11 Aug 2009	Tadeu do Carmo Alves 12 Aug 2009	2
	Internal vs External Moodle Host (Pro's & Cons) Locked	Chris Delaney 5 Aug 2009	Jon Witts 6 Aug 2009	2
	Moodle.. Server.. Locked	Andrea Andlais 12 Nov 2008	Barbara Harkin 31 July 2009	5
	Can moodle 1.9 support 1000 concurrent users Locked	rolio rolio 29 July 2009	rolio rolio 29 July 2009	3
	server refuses connection Locked	Dr S Bhatia 25 Aug 2006	ahmad nazrin 29 July 2009	9
	problem in pages loading Locked	sajad khadem nejad 26 July 2009	sajad khadem nejad 26 July 2009	0
	Mac server(s) and Moodle? Locked	Peter Ruthven-Stuart 12 Sept 2006	Robert Brenstein 24 July 2009	5
	Some trouble using JMeter to benchmark Moodle Locked	Aaron Smith 24 July 2009	Jordan Tomkinson 24 July 2009	1
	Site Import Problems Locked	Keith Wills 24 July 2009	Keith Wills 24 July 2009	0
	FastCGI and Threadsafe Locked	Chris Williams 23 July 2009	Chris Williams 23 July 2009	0
	Moodle performance Locked	deepak ratra 22 July 2009	HJWUCGA INC. 23 July 2009	5
	Distributed Moodle Installation Locked	Gaurav Vaish 19 July 2009	Gaurav Vaish 21 July 2009	7
	Proxy balancer and stickysession value Locked	Bko 83 21 July 2009	Bko 83 21 July 2009	0
	Limit space used by a course Locked	Daniele Armaioli Magi 10 July 2009	Daniele Armaioli Magi 20 July 2009	3
	low performance Locked	Zahra E 19 July 2009	Howard Miller 19 July 2009	1
	Memory Problems Locked	Joseph Becker 16 July 2009	Jason Hollowell 17 July 2009	3
	If you can start again - innoDB or MyISAM Locked	HJWUCGA INC. 14 July 2009	HJWUCGA INC. 16 July 2009	2
	minimum requirements Locked	iris jansen artigas 7 July 2009	Visvanath Ratnaweera 15 July 2009	4
	Moodle Hosting Requirements Locked	Alain Marchant 31 May 2009	Glenys Hanson 15 July 2009	7
	New moodle.org Locked	Martin Dougiamas 4 Mar 2009	HJWUCGA INC. 15 July 2009	14
	Page delivery 6 to 12 seconds (too slow) Locked	Mike Hays 12 July 2009	HJWUCGA INC. 14 July 2009	5
	Hardware requirement for 150 simultaneous users Locked	Khoa Dinh 10 July 2009	Khoa Dinh 13 July 2009	2
	Moodle + Gzip or ob_gzhandler Locked	Genner Cerna 10 July 2009	Genner Cerna 10 July 2009	0
	apache2 vs lighttpd - take a second look Locked	Justin Haaga 19 June 2009	Justin Haaga 10 July 2009	19
	Recommended best practice for enterprise Moodle and to improve performance of the system Locked	HJWUCGA INC. 5 Feb 2009	Chad Outten 9 July 2009	5
	Cron on a separate server Locked	Jai Gupta 1 July 2009	Jai Gupta 8 July 2009	14
	install moodle with linux Locked	neama ageb 6 July 2009	Visvanath Ratnaweera 6 July 2009	1
	Linux server - what version Locked	Heather P 24 Mar 2009	Bartosz Cisek 6 July 2009	12
	Free cron solutions Locked	Martin Dougiamas 1 Jan 2004	Nguyen An Thuan 5 July 2009	5
	MySQL building a moodle temp table takes a long time Locked	kevin metcalf 4 July 2009	Taylor Judd 4 July 2009	1
	overloading mysql Locked	Zahra E 3 June 2009	Visvanath Ratnaweera 4 July 2009	8
	Read/Write splitting of DB operations Locked	Jai Gupta 4 July 2009	Jai Gupta 4 July 2009	0
	64 bit Moodle Locked	Rob Duncan 2 July 2009	Visvanath Ratnaweera 4 July 2009	9
	New platform for deploying Moodle Locked	Tim Hunt 28 June 2009	Tim Hunt 28 June 2009	0
	Apache memory handling: MaxMemFree Locked	Martín Langhoff 24 June 2009	Dan Poltawski 26 June 2009	1
	database connection failed! Locked	Zahra E 6 June 2009	Justin Haaga 25 June 2009	8
	Help choosing a hosting solution Locked	A Gideon 31 Mar 2009	Robert Robinson 24 June 2009	56
	Moving to production Locked	Danny Yeshurun 22 June 2009	Visvanath Ratnaweera 22 June 2009	1
	Apache Configuration for 2000 Users for Quiz ?? Locked	Bipin Das 15 June 2009	Martín Langhoff 18 June 2009	13
	Options for a Multiple Site Setup (40+) Locked	Ceri Richards 8 Apr 2009	Michael Penney 16 June 2009	13
	Memcached/eA in Moodle 2.0 Locked	James McLean 12 June 2009	James McLean 16 June 2009	4
	Moodle 1.9 - Will clearing: mdl_backup_log "To store every course backup log info" help performance Locked	Ken Gibson 20 Mar 2008	Tim Hunt 16 June 2009	2
	Moodle over 40 000 users Locked	Ângelo Rigo 4 June 2009	Carlos Romero 15 June 2009	2
	100% CPU Utilisation Locked	Angus Ogilvie 8 June 2009	Carlos Romero 15 June 2009	6
	Hardware Loadbalancer for Moodle Locked	Bipin Das 11 June 2009	Carlos Romero 15 June 2009	3
	Running both eAccelerator and memcached Locked	Luis de Vasconcelos 12 June 2009	Justin Haaga 12 June 2009	1
	mdl_cache_text Locked	Bengt Fellbe 4 Dec 2006	Robert Brenstein 11 June 2009	4
	1.9.4+ (almost 1.9.5) and performance - table mdl_user_info_data Locked	Elena Ivanova 9 June 2009	Taylor Judd 11 June 2009	1
	Cleaning Up Moodle Data Locked	Dion Baker 28 May 2009	Dion Baker 9 June 2009	6
	Sizing policy Locked	Irati Abio 8 June 2009	Howard Miller 8 June 2009	1
	Frequent Connection Failures Locked	Keith Nelms 7 June 2009	Keith Nelms 7 June 2009	2
	Virtual Hosting- Ubuntu Locked	Mike Rehner 5 June 2009	Mike Rehner 5 June 2009	0
	MySQL Cluster or Oracle options Locked	HJWUCGA INC. 22 Apr 2009	Gary Benner 4 June 2009	8
	What do these numbers mean? Locked	Rob Monk 1 June 2009	Tiffany Morgan 2 June 2009	2
	MySQL Clustering? Locked	Michael Penney 27 May 2005	Valery Fremaux 26 May 2009	16
	Looking for examples of really HUGE Moodle installations Locked	David Mudrák 4 Feb 2009	Dan Marsden 25 May 2009	16
	500 concurrent users through multiple vps-s? Locked	Onno Schuit 6 Mar 2009	Howard Miller 24 May 2009	2
	Moodle packet sizes Locked	Luis de Vasconcelos 16 May 2009	Visvanath Ratnaweera 22 May 2009	6
	Hardware Requirements for about 2000 simultaneous users Locked	yingqi liu 21 May 2009	Visvanath Ratnaweera 22 May 2009	1
	Minimum Moodle Setup for cloud computing hosting Locked	Eric Novikoff 18 July 2008	E. L. Cooper 21 May 2009	18