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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
	OS Upgrade from RH EL 4.2 to RH EL 4.7 Locked	Pramita Aher 25 Nov 2009	Tim Hunt 26 Nov 2009	1
	Serious SQL query performance problem with table mdl_grade_grades Locked	Marcelo Lopes 26 Nov 2009	Marcelo Lopes 26 Nov 2009	0
	News instalation (20k registered users / 1k concurrent users) Locked	Renato Jr 26 Nov 2009	Valery Fremaux 27 Feb 2010	14
	New section in the coding guidelines about performance Locked	Tim Hunt 26 Nov 2009	Tim Hunt 26 Nov 2009	0
	1000 + Users Locked	Anandarup Kar 30 Nov 2009	Anandarup Kar 14 Dec 2009	3
	Conducting Quiz for 500 users at the same time in Moodle Locked	Meganathan Ramasamy 8 Dec 2009	Tim Hunt 10 Dec 2009	4
	Specs for Moodle Server running on Windows Server 2003 Locked	John McLernon 8 Dec 2009	Visvanath Ratnaweera 10 Dec 2009	1
	Apache stops processing Locked	Renato Jr 9 Dec 2009	Greg Lund-Chaix 10 Dec 2009	3
	Cloud Sites (Hosting) with Rackspace? Locked	William Tan 14 Dec 2009	William Tan 14 Dec 2009	0
	Moodle Clustering Locked	Lee Procter 14 Dec 2009	Visvanath Ratnaweera 9 Jan 2010	1
	Using My Moodle...space usage Locked	Ellen Kinsel 18 Dec 2009	Dale Davies 7 Jan 2010	2
	Moodle causing a high load on the server Locked	Marc Ramis Llorca 22 Dec 2009	Glenys Hanson 23 Dec 2009	2
	course Locked	swati c 24 Dec 2009	James Jameson 30 Dec 2009	1
	InnoDB vs. MyISAM Locked	Rui Ruas 24 Dec 2009	Rui Ruas 27 Dec 2009	4
	Could not insert record info in database. Locked	Neelima Ramesh 4 Jan 2010	Visvanath Ratnaweera 24 Feb 2010	1
	Current Server = 5 users max... need a new server? Locked	Josh Jones 8 Jan 2010	Marcus Green 26 Jan 2010	9
	Moodle installed with xampp- High CPU usage for 50 concurrent users Locked	Sayak Sarkar 8 Jan 2010	Sayak Sarkar 12 Jan 2010	3
	MySQL locking up Locked	Eric Kemsley 12 Jan 2010	Eric Kemsley 13 Jan 2010	7
	Any limits on gradebook export? Locked	Ebenezer Le Page 12 Jan 2010	Ebenezer Le Page 12 Jan 2010	0
	easy data upload Locked	Tomislav Negulić 12 Jan 2010	Tomislav Negulić 12 Jan 2010	0
	How many students/participants will moodle hold for a continued ongoing course? Locked	Kimberly Dawn 13 Jan 2010	Kimberly Dawn 13 Jan 2010	0
	MYSQL UTF-8 Locked	Nick Oliver 13 Jan 2010	Nate Hartmann 13 Jan 2010	1
	Performance problems with 50 concurrent users Locked	Harmeet Saini 13 Jan 2010	Howard Miller 26 Jan 2010	3
	MySQL configuration Locked	Jesús Martín 19 Jan 2010	Noveck Gowandan 19 Jan 2010	1
	Automatically delete users who never login Locked	chris engelsma 21 Jan 2010	Dale Davies 22 Feb 2010	5
	clarification on browsing/concurrent users Locked	Melissa Benson 21 Jan 2010	Bob Hoagland 26 Jan 2010	3
	SELECT COUNT query really bringing down performance Locked	Shimron Trammell 27 Jan 2010	Henning Bostelmann 20 Feb 2010	8
	User data - question Locked	Juan Estrada 27 Jan 2010	Maryel Mendiola 27 Jan 2010	1
	PostgreSQL server issues Locked	Worth Bishop 29 Jan 2010	Worth Bishop 18 June 2010	3
	OS and RAID questions for move from VM to real box Locked	Andy Hawkins 29 Jan 2010	Andy Hawkins 3 Feb 2010	2
	Large flash based site (was "Scaleablity of Moodle") Locked	Paul Ricketts 3 Feb 2010	Howard Miller 9 Feb 2010	2
	Hosting - I'm so lost Locked	Mark Augias 16 Feb 2010	Michael Penney 16 Feb 2010	3
	Cache type setting under performance Locked	Doris Johnson 16 Feb 2010	Doris Johnson 16 Feb 2010	0
	How do I turn logging off? Locked	Bill Parsons 18 Feb 2010	Bill Parsons 18 Feb 2010	0
	E-learning system for government ( need urgent help) Locked	ruba ruba 19 Feb 2010	Jason Jolaoso 25 Feb 2010	6
	PHP 5.2.5 performance Locked	Lionel Redelinghuys 3 Mar 2010	Howard Miller 5 Mar 2010	1
	Advice installing Moodle on a VM Locked	Jamie Sawyer 3 Mar 2010	Ebenezer Le Page 10 Mar 2010	11
	eAccelerator error and cache type setup Locked	Veronica Bendersky 9 Mar 2010	Ken Gibson 10 Mar 2010	18
	How to fix admin page Fatal Error Locked	Robin Watts 15 Mar 2010	Robin Watts 16 Mar 2010	2
	What is the best isolation level for MySql using InnoDB Locked	Piotr Kochanski 16 Mar 2010	Tim Hunt 16 Mar 2010	1
	Where to throw the new/extra memory (usefully)? Locked	greg mushial 23 Mar 2010	Henning Bostelmann 24 Mar 2010	7
	2 fast processors or 4 slower ones given SATA drives? Locked	greg mushial 23 Mar 2010	Martín Langhoff 29 Mar 2010	8
	Moodle and Content Distribution Networks (CDNs) Locked	corprew reed 23 Mar 2010	Ken Gibson 23 Mar 2010	3
	Large site, VMWare, Advice needed Locked	heli g 23 Mar 2010	J S 25 Aug 2013	26
	Moodle initial load is very slow on my linux server Locked	Richard Proudfoot 24 Mar 2010	Visvanath Ratnaweera 25 Mar 2010	2
	Moodle 1.9.7 and Clustering Locked	Noveck Gowandan 27 Mar 2010	Noveck Gowandan 27 Mar 2010	0
	Convert innoDB back to MyISAM Locked	HJWUCGA INC. 29 Mar 2010	HJWUCGA INC. 11 May 2010	16
	Slow page load, Why? or somethig else? Locked	hugo joe 29 Mar 2010	Visvanath Ratnaweera 4 Apr 2010	1
	Use Drizzle instead of MySQL database Locked	Ricardo De la Garza 30 Mar 2010	Sekahr m 23 Aug 2013	3
	Re: Delivery Status Notification (Failure) Locked	danish haroon 5 Apr 2010	Sean Farrell 7 June 2010	1
	VPS install Locked	Lisandro Laura 10 Apr 2010	Eduardo Veliz 15 Apr 2010	4
	Slow queries when showing results Locked	Tarjei Huse 12 Apr 2010	Miki Alliel 12 Dec 2011	2
	High CPU usage Locked	José de Jesús 14 Apr 2010	José de Jesús 26 Apr 2010	10
	Minium hardware requeriments for... Locked	Tomas Perez Socava 14 Apr 2010	Visvanath Ratnaweera 19 Apr 2010	8
	PHP Memory Limit for 1.9.8 Locked	Jon Witts 15 Apr 2010	Jon Witts 21 Apr 2010	6
	About replicating/mirroring Moodle Database Locked	Ashraf Aziz 18 Apr 2010	Tim Hunt 19 Apr 2010	1
	Participants in meta courses aggregate very slowly Locked	Christian Zick 20 Apr 2010	Christian Zick 5 May 2010	2
	High performance / High availability architecture for Moodle 2.0? Locked	Judy Lo 20 Apr 2010	James McLean 13 May 2010	4
	Need help regarding high availability Locked	Mamdouh Tawfik 30 Apr 2010	Federico Zurro 6 May 2010	5
	Moodle 2.0 performance Locked	sam marshall 11 May 2010	sam marshall 18 May 2010	9
	Quizzes : performance on exams period Locked	Susana L. 12 May 2010	Susana L. 16 Dec 2010	39
	Which Linux? Locked	Steve Squires 13 May 2010	Mary Evans 7 June 2010	22
	Troubleshooting performance : what does the following mean : ticks: 69 user: 52 sys: 3 cuser: 0 ... Locked	Mireille Raad 31 May 2010	rushabh hathi 8 July 2014	14
	noob question : How to increase the extra php memory ? Locked	Mireille Raad 9 June 2010	Mireille Raad 9 June 2010	0
	Add Edit Course load problem Locked	Ansley Higgins 10 June 2010	Howard Miller 10 June 2010	1
	site logs Locked	John Roughley 11 June 2010	Bartosz Cisek 25 June 2010	1
	Sessions on memcached? Locked	Dan Poltawski 17 June 2010	James McLean 21 June 2010	4
	Serious Performance hit on login & user profiles Locked	Michael Hughes 18 June 2010	Bartosz Cisek 25 June 2010	1
	Problem zipping & unzipping on the server Locked	Ted Max 25 June 2010	Ted Max 26 June 2010	3
	Moodle performance very slow Locked	Globe College 25 June 2010	hostmaked gmail 24 July 2010	9
	Speed up moodle Locked	Ashish Khatavkar 25 June 2010	Howard Miller 29 June 2010	4
	Doubt about the best configuration of the server for Moodle Locked	Vianei Mayolo 26 June 2010	Vianei Mayolo 9 July 2010	3
	Ability to run Moodle Tracking on CD? Locked	Lorrie Whitacre 1 July 2010	Dale Davies 5 July 2010	3
	Question about file handling and Moodle 2.0 Locked	John Schilling 1 July 2010	Colin Fraser 31 Dec 2010	9
	Online users block - performance Locked	Susana L. 7 July 2010	Susana L. 8 July 2010	2
	PHP and Moodle: Missing Elements Locked	Nicholas Bullen 8 July 2010	Visvanath Ratnaweera 4 Feb 2012	3
	New Moodler User - Hardware Necessary Locked	Megan Calhoun 10 July 2010	Visvanath Ratnaweera 13 July 2010	4
	Poor performance and connection timeouts (Media Temple) Locked	T Strait 12 July 2010	George Dickens 13 July 2010	3
	The standed hardware req help Locked	Michael Melton 23 July 2010	Visvanath Ratnaweera 29 July 2010	8
	Communication time between modules and time of execution Locked	Artur Zacniewski 28 July 2010	Dale Davies 30 July 2010	4
	KIOSK Based Moodle Locked	Manu Sharma 5 Aug 2010	Marc Grober 6 Aug 2010	3
	Server configuration requirement help Locked	Shyam S 5 Aug 2010	Jon Witts 6 Aug 2010	4
	Postgres cluster function Locked	John Coughlin 16 Aug 2010	John Coughlin 16 Sept 2010	5
	Upload speed requirement Locked	Johannes Solymosi 21 Aug 2010	Visvanath Ratnaweera 22 Aug 2010	7
	Load-balanced web servers and cron.php Locked	David Webber 23 Aug 2010	Visvanath Ratnaweera 24 Aug 2010	4
	Server for Moodle and Mahara Locked	Sulaiman Hana Permana 25 Aug 2010	Visvanath Ratnaweera 25 Aug 2010	1
	Hosting Service that Supports Moodle? Locked	Andy Rota 26 Aug 2010	Andy Rota 26 Aug 2010	2
	PHP Sticky Session Clustering Locked	Ali Ghorbani Moghadam 26 Aug 2010	Tim Hunt 9 Nov 2010	11
	Hosting Moodle: how to define for a quote? Locked	Derek Chirnside 27 Aug 2010	Paul Vaughan 16 Sept 2010	9
	javascript error in ie7 on the first page of the site Locked	Irith Herman 27 Aug 2010	Irith Herman 27 Aug 2010	0
	Nginx (fronteend) + Apache2 (backend) + Moodle Locked	Ricardo Caiado 27 Aug 2010	Antonio Estrada 26 July 2011	16
	Server Requirements for large Moodle Deployment up to 40k users with500 concurrent scalable to ... Locked	Steve Beitzell 27 Aug 2010	Visvanath Ratnaweera 31 Aug 2010	3
	Moodle performance using open_basedir Locked	Jan Suchanek 2 Sept 2010	Howard Miller 6 Sept 2010	4
	Nginx + Moodle configuration tips Locked	Jon Langevin 5 Sept 2010	Howard Miller 27 Mar 2016	5
	Moodle Server with load balancing Locked	Meganathan Ramasamy 11 Sept 2010	Henning Bostelmann 15 Sept 2010	6
	Missing File Extensions Locked	Bryan Smith 13 Sept 2010	Donna Hrynkiw 14 June 2011	3
	httpd2-prefork high cpu utilization Locked	Aaron Kovacich 15 Sept 2010	Jordan Tomkinson 16 Sept 2010	2
	To virtualize or not? Locked	catherine walker 16 Sept 2010	Visvanath Ratnaweera 16 Sept 2010	1
	moodle on godaddy hosting - very slow, errors Locked	marc helfano 17 Sept 2010	Jon Fila 7 Oct 2010	5
	Two Moodle Web Servers... HELP! Locked	Kris Turner 18 Sept 2010	L Cramer 19 May 2011	20