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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
	Moodle on Amazon Web Services Locked	Ian McNaught 22 June 2011	Visvanath Ratnaweera 7 Mar 2012	3
	mysql gradebook performance poor Locked	John McNamara 20 June 2011	Tim Hunt 22 June 2011	3
	Teaching via satellite with Moodle and Moodle video server Locked	Gianfranco Picozzi 20 June 2011	Gianfranco Picozzi 20 June 2011	0
	Reducing size of MySQL ibdata1 file Locked	John Wells 17 June 2011	Taylor Judd 17 June 2011	1
	Hostgator vs Siteground vs Keytomoodle, Any opinion? Locked	Jack Qadan 13 June 2011	Simon S 11 Aug 2011	3
	php register long arrays Locked	Heather P 13 June 2011	Heather P 13 June 2011	0
	Using Virtual Machine for Performance Testing Moodle Locked	Poornima Muthuraj 31 May 2011	Visvanath Ratnaweera 8 June 2011	3
	Adding new Moodle Server with load balancing Locked	Meganathan Ramasamy 31 May 2011	Visvanath Ratnaweera 3 June 2011	1
	APC PHP Accelerator in Moodle 1.9 Locked	Norman Drescher 23 May 2011	Visvanath Ratnaweera 24 May 2011	1
	Need recommendations for my.cnf configuration to support >=500 simultaneous Moodle accesses Locked	Pranata Ari 23 May 2011	Pranata Ari 30 May 2011	8
	Memory error Locked	dhileep s 18 May 2011	Visvanath Ratnaweera 24 May 2011	1
	Receive automatic phone call when site is not available Locked	Micky Fokken 17 May 2011	Taylor Judd 17 May 2011	1
	Installation of Language Lab on Moodle Locked	CL Winans 14 May 2011	CL Winans 14 May 2011	0
	Moodle logs to determine concurrent users Locked	Lev Abramov 13 May 2011	Lev Abramov 13 May 2011	2
	moodle on two different severs Locked	james aco 12 May 2011	Howard Miller 12 May 2011	1
	Buying an in-house server Locked	Ben Archer 12 May 2011	Visvanath Ratnaweera 14 May 2011	5
	Simultaneous users & Hosting? Locked	Jack Qadan 7 May 2011	Visvanath Ratnaweera 8 May 2011	3
	How to implement Load Balancer to support more concurrent users Locked	Vinoth Kumar L 6 May 2011	Visvanath Ratnaweera 11 May 2011	3
	Server configuration for Innodb Locked	hugo joe 6 May 2011	Visvanath Ratnaweera 11 May 2011	1
	how to make templates Locked	shailendra pratap singh 2 May 2011	Visvanath Ratnaweera 5 May 2011	1
	Problem with email servicie Locked	Sebastian Otero 1 May 2011	Visvanath Ratnaweera 1 May 2011	1
	Moodle and its PHP accelerator Locked	Adrien Viala 28 Apr 2011	Visvanath Ratnaweera 3 May 2011	2
	1.9 is recommended? Locked	Kazue Matsuyama 27 Apr 2011	Visvanath Ratnaweera 27 Apr 2011	3
	Selecting hardware setup Locked	Nitin Nimkar 23 Apr 2011	Nitin Nimkar 26 Apr 2011	4
	Content Pre-positioning Locked	todd vainisi 20 Apr 2011	todd vainisi 21 Apr 2011	2
	[Warning] Aborted connection 56733 Locked	Tristan Rabine 19 Apr 2011	sakai user 4 May 2011	2
	What server to use Locked	Tom Wootton 15 Apr 2011	Renaat Debleu 3 May 2011	6
	How to Replicate MOODLE ??!! Locked	Hossam eldin Reda Ibrahim 14 Apr 2011	Henning Bostelmann 16 Apr 2011	5
	Slow query on course search.php Locked	Ângelo Rigo 8 Apr 2011	Visvanath Ratnaweera 9 Apr 2011	1
	Response time issues - strace analysis help needed Locked	Chris Martel 6 Apr 2011	Daniel Tran 18 May 2011	7
	mdl_log table - how big's yours and how do you manage it? Locked	Peter Roberts 5 Apr 2011	steve miley 17 May 2012	7
	Past Moodle Backup Logs Locked	Donna Hrynkiw 2 Apr 2011	Donna Hrynkiw 2 Apr 2011	0
	MySQL server has gone away Locked	Ângelo Rigo 31 Mar 2011	Jesse O'Brien 27 Jan 2014	7
	Best my.cnf config Locked	Eric Hagley 25 Mar 2011	Frankie Kam 2 May 2011	6
	Best practices for MySQL Locked	Michael Melton 22 Mar 2011	Bartosz Cisek 23 Mar 2011	1
	Improve performance in moodle 2.0.2 Locked	Tiago Santos 18 Mar 2011	Visvanath Ratnaweera 23 Mar 2011	8
	MySQL vs MS SQL server Locked	CP Lau 17 Mar 2011	Visvanath Ratnaweera 18 Mar 2011	2
	server configuration for 50000 concurrent users Locked	Bav V 16 Mar 2011	Guillermo Madero 2 May 2011	17
	MySQL vs MS SQL server Locked	CP Lau 15 Mar 2011	Bartosz Cisek 17 Mar 2011	1
	PHP-accelerators for the Windows platform Locked	Luis de Vasconcelos 12 Mar 2011	Dan Marsden 13 Feb 2013	17
	Slow query log Locked	jean-paul KIRKBRIDE 9 Mar 2011	jean-paul KIRKBRIDE 14 Mar 2011	13
	Cherokee Experience Locked	Manish Verma 6 Mar 2011	Troo Don 16 Mar 2011	3
	Re: Hardware requirements to support 1000 simultaneous quiz takers? (2nd case) Locked	Rama Krishnan 28 Feb 2011	Visvanath Ratnaweera 9 Mar 2011	7
	Setup for 150k+ users, only 500 browsing users Locked	romain peridy 25 Feb 2011	romain peridy 25 Feb 2011	3
	Performance issue with 2.0 Locked	Laurent Michel 24 Feb 2011	Frankie Kam 24 Feb 2011	1
	Moodle 2.0.2 using too much memory and too slow Locked	Mawuli Kuivi 24 Feb 2011	Mawuli Kuivi 26 Feb 2011	5
	Update on PHP-accelerators Locked	Visvanath Ratnaweera 16 Feb 2011	Visvanath Ratnaweera 20 Dec 2011	6
	Quest for Speed Moodle 2.0 on bluehost Locked	Daniel Brouse 16 Feb 2011	Tim Hunt 16 Feb 2011	1
	Redundacy and Operating System Advise Locked	Liam Cummings 11 Feb 2011	Visvanath Ratnaweera 15 Feb 2011	1
	Moodle freezes on too much database connections Locked	robin roovers 10 Feb 2011	Visvanath Ratnaweera 16 Feb 2011	6
	Question Locked	Vladimir Sarovic 10 Feb 2011	Claude Whitmyer 10 Feb 2011	1
	Bluehost.com Locked	Alaa Elkholy 9 Feb 2011	Visvanath Ratnaweera 10 Feb 2011	2
	Nginx Locked	Frankie Kam 7 Feb 2011	Jürgen Strobel 21 Feb 2011	12
	Linux fast load at school, slow load at home Locked	Wilson Kinscherf 6 Feb 2011	Rodolfo Matos 10 Mar 2011	5
	Specifications Moodle Server 8000 user Locked	abdallah abualia 3 Feb 2011	Visvanath Ratnaweera 4 Feb 2011	1
	Performance problems Moodle 1.9 vs. 2.0 Locked	Max Österman 28 Jan 2011	Daniel Nelson 26 Mar 2011	7
	Theme counts and performance hits Locked	Jeffrey Jones 28 Jan 2011	Jeffrey Jones 28 Jan 2011	2
	Trying to implement “far-future expiration date” for static files in Centos 5. Doesn't WANT to ... Locked	Frankie Kam 24 Jan 2011	Frankie Kam 26 Jan 2011	5
	idnumber=NULL in mdl_course_modules Locked	Bente Olsen 19 Jan 2011	Bente Olsen 20 Jan 2011	2
	Load balancer Locked	Shin Hiorie 19 Jan 2011	Visvanath Ratnaweera 30 Jan 2011	12
	Slow Load times and Freezes Locked	Aaron Czarnecki 19 Jan 2011	Aaron Czarnecki 4 Feb 2011	4
	MariaDB and Moodle Locked	Monico Briseño 18 Jan 2011	Monico Briseño 19 Jan 2011	2
	How to install Munin Resource Graphs on your Centos Server Locked	Frankie Kam 17 Jan 2011	Monico Briseño 18 Jan 2011	1
	Why I am so HAPPY today..make me happier? Locked	Frankie Kam 15 Jan 2011	Frankie Kam 26 Jan 2011	9
	Intermitant Performance Issue Locked	Ed Farmer 15 Jan 2011	Visvanath Ratnaweera 19 Jan 2011	6
	I use eAccelerator 0.9.6.1 but cache scripts = 1 all the time Why? Locked	Frankie Kam 14 Jan 2011	jason everling 12 Nov 2012	12
	My crazy list of modules, blocks and filters that I have installed on my site Locked	Frankie Kam 11 Jan 2011	Frankie Kam 12 Jan 2011	2
	I modified /etc/my.cnf to optimize my SQL Queries - led to Plesk problem. So how can I optimize ... Locked	Frankie Kam 11 Jan 2011	Alex Atkinson 7 Feb 2011	5
	Apache: Track simultaneous connections? Locked	Micky Fokken 11 Jan 2011	Micky Fokken 17 Jan 2011	3
	no cachetype and rcache option in admin Locked	CCManager DDeveloper 9 Jan 2011	Karen Williams 10 Sept 2012	6
	Unbarebly slow Locked	Kevin Bayer 9 Jan 2011	Frank B 23 May 2012	11
	Hardware requirements for 50 students Locked	Rafael Chacon 6 Jan 2011	Visvanath Ratnaweera 10 Jan 2011	3
	My Moodle site runs really slow in the computer lab; home users are okay Locked	Frankie Kam 5 Jan 2011	Visvanath Ratnaweera 11 Feb 2011	15
	Yea.. More sessions questions. Locked	sakai user 23 Dec 2010	sakai user 23 Dec 2010	0
	Moodle website performance tuning Locked	jimmy Octavious 20 Dec 2010	Frankie Kam 13 Jan 2011	7
	Memcache on Moodle 2.0 Locked	Peter Goodhall 20 Dec 2010	sakai user 22 Dec 2010	1
	What are you running & support Locked	John Dlugosz 8 Dec 2010	Tim Hunt 11 Dec 2010	4
	Moodle Performance Concern Locked	Jody Florian 3 Dec 2010	Tim Hunt 4 Dec 2010	2
	Input on Large Scale Install 30,000+ users Locked	Timothy Guy 3 Dec 2010	Ricardo Caiado 4 Dec 2010	8
	Performance problemas with large mdl_log Locked	Ewout ter Haar 26 Nov 2010	Ewout ter Haar 30 Nov 2010	2
	mod_pagespeed with moodle Locked	Gain Oloya 23 Nov 2010	Ricardo Caiado 23 Nov 2010	1
	Moodle Best Settings Locked	Sulaiman Hana Permana 23 Nov 2010	Visvanath Ratnaweera 19 Mar 2011	1
	Usign internal cachetype Locked	Ângelo Rigo 23 Nov 2010	Bartosz Cisek 2 Dec 2010	5
	how many users with same ip? Locked	H B 19 Nov 2010	Eduardo Gomez 27 Aug 2013	9
	Hardware requirements to support 1000 simultaneous quiz takers? Locked	Chris Akus 19 Nov 2010	Darko Miletić 15 Dec 2010	19
	Moodledata using clusters Locked	Ângelo Rigo 17 Nov 2010	Chris Fryer 11 Feb 2011	4
	BIG (Moodle Site Size) Problem Locked	Jon Fila 17 Nov 2010	Séverin Terrier 18 Nov 2010	7
	Hardware requirement Locked	Daniel Tan 15 Nov 2010	Daniel Tan 15 Nov 2010	0
	uploaduser.php performance - can it be improved? Locked	Stewart Hutton 14 Nov 2010	Stewart Hutton 14 Nov 2010	0
	New e-peen script! Er, I mean, system performance analyser Locked	sam marshall 14 Nov 2010	AL Rachels 25 Dec 2010	12
	Moodle performance testing: 1.9 vs. 2.0 Locked	Ruslan Kabalin 10 Nov 2010	Wen Hao Chuang 1 Sept 2011	25
	Advice Needed for New Moodle Setup for 4 Primary Schools Locked	Mark Jackson 8 Nov 2010	Visvanath Ratnaweera 10 Nov 2010	3
	InnoDB cash hit ratio, Moodle 1.9.3 Server hangs Locked	Doug Renz 5 Nov 2010	Bartosz Cisek 6 Nov 2010	1
	Using Oracle database and SAIP for large University ? Locked	Raphaël Godue 30 Oct 2010	Zulma Alvarado 20 Nov 2010	2
	Some basic info needed for using Moodle Locked	David Friedberg 29 Oct 2010	Visvanath Ratnaweera 5 Nov 2010	2
	Hardware requirements for 12000+ user moodle site Locked	Nathsahib Narale 28 Oct 2010	Tim Hunt 29 Oct 2010	4
	best architecture for a large installation Locked	Fouzi Sukhilala 27 Oct 2010	Albert Ramsbottom 19 Feb 2014	13
	Stats affecting server Locked	Dave Cuttriss 25 Oct 2010	Visvanath Ratnaweera 29 Oct 2010	2
	Quizzes : performance on exams period, randomizing questions Locked	Anthony James 21 Oct 2010	Tim Hunt 22 Oct 2010	13
	moodledata on separate server? Locked	Susan Mangan 16 Oct 2010	sam marshall 18 Oct 2010	4