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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
	Problem of booting after migrating server Locked	Rey Ong 19 Nov 2008	Rey Ong 19 Nov 2008	0
	problem in site registration Locked	Avi Levy 24 Apr 2014	Avi Levy 24 Apr 2014	0
	problem in pages loading Locked	sajad khadem nejad 26 July 2009	sajad khadem nejad 26 July 2009	0
	Problem at my Server Locked	Ali Arekat 6 Dec 2016	Emma Richardson 8 Dec 2016	5
	Probable Usage Locked	Chris U 20 Feb 2003	Martin Dougiamas 21 Apr 2003	7
	Private Server MOODLE Access Fail Locked	Gary Marsh 28 Dec 2017	Ken Task 30 Dec 2017	6
	Presentation of a CLASS Offline - Is it Possible to Freeze the Dates? Locked	Erlyn Baack 18 Nov 2004	Erlyn Baack 21 Nov 2004	2
	Preparation, Requirements and Scalability Locked	Francisco Orellana 25 Nov 2019	Francisco Orellana 4 Dec 2019	3
	Preliminery observations for 100 concurrency test Locked	rupesh patil 12 June 2009	Rosario Carcò 19 Mar 2012	24
	Preferred php handler for large moodle site Locked	Farhan Karmali 20 Apr 2016	Mark Sharp 6 May 2016	8
	Preferred method of converting MyISAM to InnoDB Locked	HJWUCGA INC. 17 Sept 2009	Stephen Bloomer 10 Nov 2010	26
	Predictable but strange surge in server load Locked	Paul Joyce 14 Mar 2022	Ken Task 17 Mar 2022	17
	Pound rewrites "Location" header after logon Locked	Chris Fryer 14 Sept 2009	Ben Steeples 7 Oct 2009	4
	PostgreSQL with +65k users Locked	Ricardo Caiado 4 Jan 2021	Visvanath Ratnaweera 4 Jan 2021	1
	PostgreSQL server issues Locked	Worth Bishop 29 Jan 2010	Worth Bishop 18 June 2010	3
	Postgresql performance slow Locked	David Vishloff 10 June 2017	David Vishloff 10 June 2017	0
	Postgres Tuning Guide Locked	Martín Langhoff 15 Apr 2005	Pim Koeman 20 June 2005	2
	Postgres performance in 1.4.4+ Locked	Martín Langhoff 1 Apr 2005	Martin Dougiamas 1 Apr 2005	1
	Postgres cluster function Locked	John Coughlin 16 Aug 2010	John Coughlin 16 Sept 2010	5
	Post Data file for Apache Benchmark AB? Locked	Don Quixote 27 July 2004	sulochana sooriyaarachchi 10 Jan 2009	11
	Possible Webspace for MOODLE developers Locked	W Page 15 Jan 2004	steve cassidy 18 Mar 2006	18
	Possible to run Moodle on older Mac G4/400? Locked	Steven Day 10 Nov 2004	Ted O'Neill 30 Nov 2004	12
	Possible server errors, caused by too many students Locked	Mihail Omelin 8 Feb 2021	Thorsten Bartel 6 Mar 2021	5
	Possible inefficient cron job query with mdl_grade_grades_history table Locked	Wen Hao Chuang 20 Nov 2009	Wen Hao Chuang 20 Nov 2009	2
	Possible hostings - Moodle 2.2.2 Locked	Leire Gómez 16 May 2012	Visvanath Ratnaweera 17 May 2012	1
	posqresql update Locked	joel Green 16 July 2014	joel Green 16 July 2014	0
	porting Linux Moodle to Windows Moodle Locked	Steve Peters 19 July 2008	Ken Wilson 3 Aug 2008	10
	Portability of Moodle Locked	Martín Langhoff 20 Apr 2004	Martin Dougiamas 20 Apr 2004	4
	POP3 for students - How do you do it? Locked	Aidan Hammond 5 June 2006	Iñaki Arenaza 6 June 2006	3
	pop3 autentification Locked	Esther Díez 22 Jan 2004	Mikko Toivola 9 Sept 2005	3
	Poor Quiz Performance: 32 GB Ram, 24 Cores Locked	Abhijit M 28 July 2020	Visvanath Ratnaweera 29 July 2020	6
	Poor performance with 200k users Locked	Rok Jaklič 21 Oct 2020	Rok Jaklič 21 Oct 2020	0
	Poor performance on Windows virtual server Locked	Scott Christy 1 Aug 2013	AL Rachels 6 Sept 2013	17
	Poor Performance On Windows (Moodle 2.4.1) Locked	Andrew Emmett 12 Feb 2013	Benjamin St.Germain 23 Apr 2013	10
	poor performance for logged in users Locked	Frank Chmely 20 Feb 2013	J S 18 Mar 2013	12
	Poor performance and connection timeouts (Media Temple) Locked	T Strait 12 July 2010	George Dickens 13 July 2010	3
	Poor performance with Xampp local server (response time = 5") Locked	vouty - 4 Apr 2013	Justin Hunt 16 Apr 2013	6
	Pollyanna question Locked	Derek Chirnside 27 Sept 2012	Michael Spall 11 Oct 2012	5
	pluginfile.php performance problem Locked	Phil Loaiza 11 Sept 2014	Troels Bugge 10 Feb 2015	20
	pluginfile.php performance and session locking Locked	Dominique LALOT 16 Feb 2017	Dominique LALOT 24 Feb 2017	2
	Plugin Error Locked	Freddie Batista 27 Sept 2013	Freddie Batista 27 Sept 2013	0
	Plugin AJAX slow to load Locked	Ben Kahn 13 May 2020	Ben Kahn 14 May 2020	2
	Plesk anomolie Locked	Paul Taylor 14 Apr 2006	Paul Taylor 14 Apr 2006	1
	Please share your task processing settings! Locked	Howard Miller 10 Oct 2019	Howard Miller 31 Oct 2019	13
	Please recommend a suitable web provider. Locked	red tiger 18 Feb 2012	safet guzic 19 Feb 2012	9
	please Help with MySQL optimization Locked	Gautam Saha 12 June 2007	Ken Wilson 15 June 2007	4
	Please help me configure mysql for large Moodle site. Locked	Doctor J.W. Müller 3 Oct 2013	jason everling 4 Oct 2013	1
	Please help - Server Database Performance Problems Locked	Matthew Dumont 9 Sept 2006	Ralph Patterson 28 Sept 2006	7
	play video in mobile not play Locked	laww m 29 Sept 2013	laww m 29 Sept 2013	0
	Planning new server hardware; and deciding between WAMP & LAMP Locked	Bob Majors 15 Jan 2008	Visvanath Ratnaweera 1 May 2008	17
	Planning connection bandwith & server stats Locked	Ivaylo Milenkov 15 Aug 2005	Ivaylo Milenkov 25 Aug 2005	3
	Placement of custom php.ini within Moodle Locked	Jesus Padro 27 Mar 2009	Dakota Duff 27 Mar 2009	1
	phpxref cannot get past output_dir problem Locked	HJWUCGA INC. 19 Nov 2009	HJWUCGA INC. 19 Nov 2009	0
	Phpwebhosting.com Locked	Art Lader 3 Sept 2003	Håkan Andersson 10 Sept 2003	21
	phpinfo() doesn't show updated mysql version Locked	Don Quixote 25 Aug 2004	Howard Miller 28 Aug 2004	3
	PHP5 32bit vs 64bit performance on windows 64 bit server Locked	Paul Lindgreen 3 June 2016	Paul Lindgreen 9 June 2016	4
	php.fpm - set up, trying to trace slowdown Locked	Otaku Dude 13 Mar 2020	Otaku Dude 13 Mar 2020	0
	php, mysql & Mac OS X Server 10.2 Locked	Chris U 15 Jan 2004	Don Hinkelman 9 Feb 2004	8
	php-speedy - any use in a LAMP environment and Moodle? Locked	Frankie Kam 28 Aug 2011	Troo Don 28 Aug 2011	1
	php-fpm hangs Locked	Pin Jin 9 Jan 2018	Pin Jin 10 Jan 2018	1
	Php-fpm configurations issue Locked	Gaurav Shinde 28 Apr 2021	Alex Rowe 28 Apr 2021	3
	php-fpm config for max_children Locked	Carly Born 7 Feb 2020	Ken Task 7 Feb 2020	1
	PHP-cgi.exe 100% load CPU one core Locked	István Farkas 9 Nov 2018	István Farkas 11 Nov 2018	6
	PHP-APC Locked	Josu Lazkano 16 Nov 2011	Mark Johnson 30 Nov 2011	5
	PHP-accelerators for the Windows platform Locked	Luis de Vasconcelos 12 Mar 2011	Dan Marsden 13 Feb 2013	17
	php-accelerator experience Locked	Ray Kingdon 7 Nov 2003	Martin Dougiamas 28 Nov 2003	20
	php_extension mbstring is recommended to be installed/enabled Locked	Simon Scholey 17 Feb 2006	kiran solanki 12 Dec 2007	19
	PHP time() returns inconsistent values Locked	David Hoffmann 5 Sept 2008	David Hoffmann 5 Sept 2008	2
	PHP Sticky Session Clustering Locked	Ali Ghorbani Moghadam 26 Aug 2010	Tim Hunt 9 Nov 2010	11
	php register long arrays Locked	Heather P 13 June 2011	Heather P 13 June 2011	0
	php quiz module deduplication for lower memory bandwidth Locked	James Salsman 21 Sept 2010	sam marshall 29 Oct 2010	11
	PHP Profiler Question	Emma Richardson 6 Mar 2024	Emma Richardson 7 Mar 2024	4
	PHP optimization HOWTO Locked	David Delgado 5 Dec 2003	David Delgado 5 Dec 2003	0
	Php memory_limit, what is the good way Locked	Aurélien Besson 6 Nov 2018	Ricardo Caiado 28 June 2020	10
	PHP Memory Limit for 1.9.8 Locked	Jon Witts 15 Apr 2010	Jon Witts 21 Apr 2010	6
	PHP memory Locked	Rama Gundabhat 16 Apr 2015	Rama Gundabhat 16 Dec 2015	18
	PHP errors Moodle 3.4.5, PHP 7.1.27, MySQL 5.7.23.23 Locked	Barbara Taylor 1 May 2019	Nick Ben 19 Feb 2020	10
	PHP Downgrade produced connection to MySQL problem Locked	Anthony Borrow 2 Feb 2006	Anthony Borrow 3 Feb 2006	3
	PHP Byte Code Compiler in Moodle 1.2+ Locked	John Dell 6 May 2004	John Dell 9 May 2004	3
	PHP and Moodle: Missing Elements Locked	Nicholas Bullen 8 July 2010	Visvanath Ratnaweera 4 Feb 2012	3
	PHP and MariaDB settings as a site grows beyond the OS default values? Locked	David M 2 Nov 2022	Ken Task 5 Nov 2022	6
	Php acelerator in Windows server Locked	Mari Cruz García 11 Feb 2013	Mari Cruz García 12 Feb 2013	2
	PHP accelerator rookie questions Locked	Tom Moseley 11 Dec 2013	Tom Moseley 12 Dec 2013	8
	PHP Accelerator Recommendations Locked	adam fisher 18 Mar 2006	Visvanath Ratnaweera 20 Mar 2006	6
	PHP accelerator on Novell Locked	Michele Balazs 24 Jan 2005	Michele Balazs 24 Jan 2005	0
	php accelerator help... Locked	Genner Cerna 16 Mar 2005	Dipa Shah 17 Aug 2006	5
	php Accelerator (APC) help needed Locked	Henry Johnson 25 Aug 2006	Myles Carrick 27 Aug 2006	11
	PHP accelerator Locked	Josu Lazkano 10 Nov 2011	Josu Lazkano 11 Nov 2011	3
	php accelerator Locked	Eric Henson 21 Nov 2006	Henry Johnson 22 Nov 2006	4
	php accelerator Locked	Genner Cerna 4 July 2006	Anthony Borrow 11 Aug 2006	19
	PHP Accelerator Locked	James Phillips 23 May 2005	Tim Allen 23 May 2005	2
	php accelearator issue with virtual hosts? Locked	Heather P 7 Aug 2007	Maik Riecken 16 Aug 2007	5
	PHP 5.4 and Suse Linux Problems Locked	Graham Stone 14 July 2014	Peter Dorman 23 July 2014	6
	PHP 5.2.5 performance Locked	Lionel Redelinghuys 3 Mar 2010	Howard Miller 5 Mar 2010	1
	PHP 5.0.4 or PHP 4.4 for Moodle 1.6 Locked	Carl Keil 28 June 2006	Ken Wilson 16 Aug 2006	6
	PHP 5 and acceleration Locked	Tim Allen 20 Apr 2005	Genner Cerna 20 Apr 2005	1
	php 100% high utilization Locked	Sali Kaceli 25 Sept 2012	Visvanath Ratnaweera 26 Sept 2012	8
	PHP > 7.4.11 slowness Locked	David Castro 16 Feb 2021	Rick Jerz 16 Feb 2021	5
	php Locked	bob humble 5 Oct 2015	bob humble 8 Oct 2015	3
	pgbouncer, transaction pooling and MDL-60174 Locked	Damyon Wiese 28 Nov 2017	Damyon Wiese 28 Nov 2017	0