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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
	Links not working Moodle 2.71 Locked	john Simpson 18 Aug 2014	Mary Cooch 21 Aug 2014	2
	Deleting course slow?? Locked	Judy Hsu 21 Aug 2014	Tim Hunt 21 Aug 2014	1
	Profile specific pages with XHProf Locked	Nathan Bruley 14 Aug 2014	Nathan Bruley 15 Aug 2014	2
	Apache CPU usage shoots to >= 100%. Why? Locked	Brad Smith 28 Jul 2014	Brad Smith 7 Aug 2014	12
	Slow logins and page/video/SCORM quiz loads Locked	Daniel Williams 1 Aug 2014	Visvanath Ratnaweera 6 Aug 2014	25
	Connection drop issues Locked	Nathan Bruley 26 Jul 2014	Nathan Bruley 6 Aug 2014	7
	storage size Locked	m question 5 Aug 2014	Derek Chirnside 5 Aug 2014	1
	Installation of xhprof Locked	Nathan Bruley 1 Aug 2014	Nathan Bruley 1 Aug 2014	4
	JMeter Scripts Locked	Ben Steeples 23 Mar 2009	Molin Men 31 Jul 2014	51
	Moodle randomly logging users out on AWS Locked	Wathsala Werapitiya 9 Jul 2014	James McLean 31 Jul 2014	10
	PHP 5.4 and Suse Linux Problems Locked	Graham Stone 14 Jul 2014	Peter Dorman 23 Jul 2014	6
	Server specification for 18000 users moodle site Locked	Dr. Amitkumar Mali 21 Jul 2014	Itamar Tzadok 23 Jul 2014	12
	Disable cron emails Locked	Nathan Bruley 15 Jul 2014	Nathan Bruley 22 Jul 2014	4
	Timeout problems? Locked	Nathan Bruley 20 Jun 2014	Nathan Bruley 19 Jul 2014	6
	Move away from eaccelerator for your opcode cache needs Locked	Dan Poltawski 1 May 2013	Marcelon Hack 16 Jul 2014	3
	posqresql update Locked	joel Green 16 Jul 2014	joel Green 16 Jul 2014	0
	2.6, MUC and Memcache Locked	James McLean 8 Jul 2014	Colin Campbell 11 Jul 2014	6
	Alert pops up while playing SCORM Locked	Erwin Ancheta 8 Jul 2014	Ron Meske 10 Jul 2014	1
	filedir folder gaining 7GB in 3 days Locked	Adrian Garden 5 Jun 2014	James McLean 9 Jul 2014	3
	CloudFlare Locked	James Brown 20 May 2014	Usman Asar 9 Jul 2014	9
	Troubleshooting performance : what does the following mean : ticks: 69 user: 52 sys: 3 cuser: 0 ... Locked	Mireille Raad 31 May 2010	rushabh hathi 8 Jul 2014	14
	installing an enroll plugin. dependancy problem. Locked	john Simpson 7 Jul 2014	john Simpson 8 Jul 2014	6
	Problems with MongoDB for application cache? Locked	Colin Campbell 6 Jul 2014	Colin Campbell 6 Jul 2014	0
	MYSQL to ORACLE Locked	Freddie Batista 2 Jul 2014	Marcus Green 2 Jul 2014	3
	Massive forum emissions solution ? Locked	Valery Fremaux 3 Jan 2014	Tim Hunt 1 Jul 2014	6
	Internet & internet access to a single Moodle Locked	Ali Hastie 17 Mar 2006	Carlos Correa 30 Jun 2014	10
	Legacy Files Locked	Angela Tarver 27 Jun 2014	Derek Chirnside 29 Jun 2014	2
	Strength and load test of server for Moodle Locked	Molin Men 26 Jun 2014	Tim Hunt 27 Jun 2014	1
	Moodle 2.6 amb Memcached for sessions Locked	Antonio Piedras 14 May 2014	David Aylmer 26 Jun 2014	9
	Moodle 2.5 Lag Locked	Andrew Leer 23 Jun 2014	Andrew Leer 23 Jun 2014	1
	Moodle arquitecture - AWS Locked	Julian Agudelo 17 Aug 2013	Riady Santoso 20 Jun 2014	10
	Caching documentation (at last!) Locked	Howard Miller 12 Jun 2014	Howard Miller 20 Jun 2014	2
	Drag and Drop lag Locked	Acs Gabor 19 Jun 2014	Acs Gabor 19 Jun 2014	0
	Loading Lag Locked	Asish Menon 16 Jun 2014	Howard Miller 17 Jun 2014	1
	How many number of users will support Locked	srikanth raju 15 Jun 2014	Tim Hunt 16 Jun 2014	2
	finding function Locked	srikanth raju 13 Jun 2014	srikanth raju 13 Jun 2014	0
	Performance testing of Moodle 2.6.1 Locked	CP Lau 11 Jun 2014	CP Lau 11 Jun 2014	1
	Maximum number of record in database tables for Windows servers Locked	Mari Cruz García 9 Jun 2014	Petr Skoda 11 Jun 2014	8
	Moodle 2.6, PHP 5.3 to 5.5 now error? Locked	Jeff Green 21 Apr 2014	Jeff Green 6 Jun 2014	7
	Admin login is very slow Locked	Karthick Mani 2 Jun 2014	Karthick Mani 4 Jun 2014	5
	Scalability far can Moodle be pushed Locked	Bryan Smith 30 May 2014	Dan Marsden 3 Jun 2014	11
	Moodle site gradually slowed now essentially stopped Locked	Patrick Hallermann 23 Jan 2014	srikanth raju 3 Jun 2014	12
	Archiving Media on External Server Locked	Tyler Paulson 2 Jun 2014	Ken Task 3 Jun 2014	3
	Moodle re-install necessary Locked	Jeff Ratliff 29 May 2014	Visvanath Ratnaweera 31 May 2014	4
	question about required hardware Locked	neama ageb 21 May 2014	Guillermo Madero 22 May 2014	6
	SCORM 1.2 loading slowly on Moodle 2.7 on iPad, on justHost server Locked	Subramani K 22 May 2014	Usman Asar 22 May 2014	7
	Multiple instances of httpd running Locked	William Farrugia 19 May 2014	Tim Hunt 19 May 2014	1
	Need help for hosting Moodle 2.6 in my own server Locked	Krishna Thapa 18 May 2014	Guillermo Madero 18 May 2014	1
	Best Operating System for Moodle Locked	Reggie Rivero 6 May 2014	Visvanath Ratnaweera 9 May 2014	8
	Download multiple files Locked	Mauricio Moreira Junior 7 May 2014	Guillermo Madero 8 May 2014	3
	Moodle 2.6 running very slow Locked	Michael K 28 Apr 2014	Michael K 29 Apr 2014	8
	Multiple master Mysql replication with Moodle? Locked	Moritz von Schweintiz 9 Nov 2007	Andrew Lyons 29 Apr 2014	9
	Moodle server not responding Locked	Pavel Kopylov 25 Apr 2014	Guillermo Madero 28 Apr 2014	3
	synchronising dataroot using unison between web servers Locked	Gerry Hall 27 Apr 2014	Gerry Hall 27 Apr 2014	0
	Moodle 2.6 performance :-) Locked	Tim Hunt 26 Apr 2014	Mathew Gancarz 26 Apr 2014	1
	moodle 2.6.2 very slow Locked	james aco 24 Apr 2014	james aco 25 Apr 2014	3
	problem in site registration Locked	Avi Levy 24 Apr 2014	Avi Levy 24 Apr 2014	0
	Memcache and load balanced web servers Locked	jonny fireblade 4 Dec 2013	Ryan-Neal Mes 22 Apr 2014	9
	Will this configuration handle 20K users? Locked	German Acevedo 17 Apr 2014	German Acevedo 22 Apr 2014	9
	mdl_events Table Locked	Marc Hermon 16 Apr 2014	Howard Miller 16 Apr 2014	1
	Moodle Apache service stopped Locked	krishna T 15 Apr 2014	Howard Miller 16 Apr 2014	2
	Implement moodle vs nginx or apache Locked	Noat Tran 14 Apr 2014	Bartosz Cisek 14 Apr 2014	1
	Database overload everyday at 1.00pm - err Locked	Seth Mengal 27 Feb 2014	james mergenthaler 11 Apr 2014	8
	Apache perfomance issue Locked	Saurabh Makol 2 Apr 2014	james mergenthaler 11 Apr 2014	1
	HELP ! Admin rights deleting from users Locked	Freddie Batista 4 Apr 2014	james mergenthaler 11 Apr 2014	4
	jmeter with ldap Locked	Mark Sharp 8 Apr 2014	Deleted user 10 Apr 2014	1
	suggestion on specs Locked	awais tahir 1 Apr 2014	Usman Asar 9 Apr 2014	2
	Cache setting: Event invalidation Locked	Ron Meske 20 Mar 2014	jason everling 4 Apr 2014	2
	Design Constraints of Moodle Locked	Bertie Corrie 2 Apr 2014	Bertie Corrie 2 Apr 2014	3
	What would you buy? Locked	Eric Hagley 11 Sep 2013	jason everling 27 Mar 2014	21
	eAccelerator Locked	Brad Fisher 17 Feb 2014	jason everling 27 Mar 2014	3
	MUC performance information in a Windows 2008-IIS7 server Locked	Mari Cruz García 25 Mar 2014	Mari Cruz García 25 Mar 2014	0
	Slow cache purge etc. Locked	Rikard E 20 Nov 2013	Rikard E 5 Mar 2014	6
	Load balanced webservers failing Locked	Ellio Mourinho 21 Feb 2014	Albert Ramsbottom 25 Feb 2014	7
	Login page is not loading Locked	Rich Markovitz 24 Feb 2014	Emma Richardson 24 Feb 2014	1
	hardware software sizing Locked	Tobias Olausson 21 Feb 2014	Tobias Olausson 21 Feb 2014	6
	Moodle slow on firefox Locked	Mira El-koussa 19 Feb 2014	Guillermo Madero 20 Feb 2014	2
	best architecture for a large installation Locked	Fouzi Sukhilala 27 Oct 2010	Albert Ramsbottom 19 Feb 2014	13
	Moodle 2.5 performance testing at the OU Locked	Tim Hunt 16 Nov 2013	Tim Hunt 19 Feb 2014	17
	Moodle 2.6 cluster + NFS v4 Locked	sTIC ASIC Team A 18 Feb 2014	Matteo Scaramuccia 19 Feb 2014	4
	Are my cache stores and instances configured correctly? Locked	Paul Lindgreen 14 Feb 2014	Paul Lindgreen 19 Feb 2014	5
	Idea for Moodle performance metrics Locked	Tomasz Muras 9 Feb 2014	David Monllaó 17 Feb 2014	8
	Server Clustering recommendations M2.6 Locked	Albert Ramsbottom 8 Jan 2014	J S 16 Feb 2014	13
	Moodle 2.5 Templates Locked	Chase Brown 15 Feb 2014	Chase Brown 15 Feb 2014	0
	As close to 100% uptime as possible, failover server? Locked	Brian Y 9 Feb 2014	Albert Ramsbottom 11 Feb 2014	3
	Moodle Setup for 30 concurrent users Locked	Vishal Mene 7 Feb 2014	Vishal Mene 11 Feb 2014	3
	How to run the database performance script in Moodle Locked	Mari Cruz García 4 Feb 2014	Ken Task 11 Feb 2014	14
	dbsessions and max_allowed_packet Locked	Ricardo Santos 19 Nov 2013	Miryam Moreno Pacheco 10 Feb 2014	3
	Browsers Locked	sheila jagannathan 2 Mar 2007	Pam Redpath 9 Feb 2014	5
	AGILIZACION DEL SISTEMA DE MATRICULA Locked	joseph smith 8 Feb 2014	joseph smith 8 Feb 2014	0
	Simultaneously Concurrent Users with Multiple Moodles Locked	JC Dodo 6 Feb 2014	Howard Miller 7 Feb 2014	1
	Moodle on OpenShift Locked	José Grimaldo 6 Feb 2014	José Grimaldo 7 Feb 2014	4
	STandard Moodle Administrator Locked	Alice Garrard 18 Jan 2014	jason everling 6 Feb 2014	3
	Server Hardware - look OK? Locked	Rob Boris 23 Jan 2014	Howard Miller 5 Feb 2014	6
	Simultaneously Concurrent Users Locked	Freddie Batista 1 Feb 2014	J S 3 Feb 2014	5
	Moodle crashing after upgrade to 2.4.7 Locked	Michael Hughes 21 Jan 2014	Dan Poltawski 30 Jan 2014	10
	Cron Runtime Locked	Jordan White 30 Jan 2014	Ken Task 30 Jan 2014	1
	Moodle Mobile on Android Locked	gerard van rooy 28 Jan 2014	Howard Miller 30 Jan 2014	5
	MySQL server has gone away Locked	Ângelo Rigo 31 Mar 2011	Jesse O'Brien 27 Jan 2014	7
	Moodle 2 Slow Admin login Locked	john jackson 26 Jan 2014	Valery Fremaux 26 Jan 2014	3