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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
	Best accelerator for me Locked	roc mehra 20 Dec 2012	Visvanath Ratnaweera 27 Jan 2013	3
	best architecture for a large installation Locked	Fouzi Sukhilala 27 Oct 2010	Albert Ramsbottom 19 Feb 2014	13
	Best infraestructure for 40.000 students Locked	Juan Fortuna 27 May 2020	Ken Task 27 May 2020	1
	Best infraestructure for 60.000+ students and 10000 course Locked	Tumu Sai Vineeth Kumar 1 July 2020	Howard Miller 2 July 2020	5
	Best Linux distro for Moodle Locked	John Araújo 11 Oct 2012	Visvanath Ratnaweera 11 Oct 2012	4
	Best Memory Settings Locked	Mohammad Yaseen 30 Nov 2020	Visvanath Ratnaweera 10 Dec 2020	7
	Best Moodle version for Linux Server Locked	John Araújo 12 Oct 2012	Visvanath Ratnaweera 12 Oct 2012	2
	Best my.cnf config Locked	Eric Hagley 25 Mar 2011	Frankie Kam 2 May 2011	6
	Best Operating System for Moodle Locked	Reggie Rivero 6 May 2014	Visvanath Ratnaweera 9 May 2014	8
	Best performance configuraction for APC Locked	Jai Gupta 15 Aug 2007	Anthony Borrow 17 Aug 2007	3
	Best Practice for hosting multiple moodle instances Locked	Alan Dawson 10 Jan 2006	Gavin McCullagh 10 Jan 2006	1
	Best practices for MySQL Locked	Michael Melton 22 Mar 2011	Bartosz Cisek 23 Mar 2011	1
	Best server characteristics for Moodle Locked	Mario Planas 26 Apr 2006	Pieterjan Heyse 28 Apr 2006	3
	Best server configuration you recommend for a hosting with 15K users and many h5p interactive ... Locked	James Peter 6 May 2021	Helen Foster 7 May 2021	4
	best settings for eAccelerator Locked	Mark Little 3 Oct 2008	Mark Little 6 Oct 2008	2
	Best VM structure on cloud for 10000 and 20000 concurrent users Locked	Ahmed Ibrahim 13 Sept 2020	Helen Foster 14 Sept 2020	3
	best way to find which moodle components are the most resource consuming? Locked	Patrick Scott 2 Apr 2020	Visvanath Ratnaweera 22 Apr 2020	17
	Better location for moodledata directory? Locked	hugo joe 10 Sept 2013	jason everling 10 Sept 2013	1
	Beware of index.php file in english pack... Locked	Rich Four 18 Nov 2004	Rich Four 18 Nov 2004	0
	BIG (Moodle Site Size) Problem Locked	Jon Fila 17 Nov 2010	Séverin Terrier 18 Nov 2010	7
	Big Blue Button and number of users Locked	Javier Tejera 29 June 2018	Albert Ramsbottom 9 July 2018	3
	Big Blue Button Hosting Locked	Deyaz Vare 8 Sept 2020	Visvanath Ratnaweera 9 Sept 2020	4
	Big jumps in mysql memory usage Locked	David Garden 7 Nov 2018	Howard Miller 8 Nov 2018	7
	Big Moodle installation with two different approaches Locked	Khaled Zamani 3 Oct 2008	Khaled Zamani 5 Oct 2008	3
	Bitnami Cloud Hosting w/AWS Locked	Heidi Gartenberg 28 Jan 2013	Rick Jerz 29 Jan 2013	3
	bitnami stack moodle on laptop i.p. occupied Locked	ben reynolds 9 Oct 2010	ben reynolds 21 Oct 2010	5
	Blank page returned when i access by admin Locked	Doan Dung 26 Apr 2016	Doan Dung 27 Apr 2016	2
	block_calendar_upcoming causes substantial login slowdown on large sites with many categories Locked	Lexy Walker 22 Sept 2021	Mark Sharp 22 Sept 2021	2
	bluehost.com Locked	Art Lader 14 Nov 2004	Floyd Saner 29 May 2012	48
	Bluehost.com Locked	Alaa Elkholy 9 Feb 2011	Visvanath Ratnaweera 10 Feb 2011	2
	Boosting RSS block and messaging performance Locked	Mark Stevens 8 Sept 2005	Daryl Hawes 16 Sept 2005	7
	Broke caching and site is completely down	tom swet 1 Dec 2023	tom swet 1 Dec 2023	3
	Browse list of users Locked	Mei Ling 13 July 2012	AL Rachels 17 July 2012	1
	Browser hangs... Locked	Antonio Tonino 28 Oct 2008	ETH Zürich 2 Nov 2008	1
	Browsers Locked	sheila jagannathan 2 Mar 2007	Pam Redpath 9 Feb 2014	5
	BUILD A SERVER FOR MOODLE, HOW TO? Locked	Đinh Lư Giang 26 Oct 2008	Don Hinkelman 29 Nov 2008	5
	Building clustered Moodle hosting environment how much Internet speed? Locked	Obidjon Yuldashev 13 Feb 2009	Henning Bostelmann 14 Feb 2009	1
	Bulk Answer for Setup Locked	jason everling 24 Apr 2013	jason everling 30 May 2013	2
	Bulk User Action - Problem Download Users Locked	Proyectos Moodle 19 Jan 2016	Proyectos Moodle 19 Jan 2016	0
	Busy workers - slow BBB connection Locked	Manar Alseddiqi 19 Sept 2021	Manar Alseddiqi 19 Sept 2021	0
	Buying an in-house server Locked	Ben Archer 12 May 2011	Visvanath Ratnaweera 14 May 2011	5
	Cache performens test- over 800 = error 504 Locked	Michael Jensen 2 Dec 2022	Michael Jensen 7 Dec 2022	8
	Cache problem Locked	Wissam Nahas 18 Mar 2015	Howard Miller 18 Mar 2015	1
	Cache setting: Event invalidation Locked	Ron Meske 20 Mar 2014	jason everling 4 Apr 2014	2
	Cache Settings in config.php - help Locked	Noveck Gowandan 25 Oct 2016	Andrew Lyons 5 Nov 2016	6
	Cache store performance reporting Locked	Andrey Kladiti 22 July 2019	Anze Pratnemer 17 Apr 2020	5
	Cache type setting under performance Locked	Doris Johnson 16 Feb 2010	Doris Johnson 16 Feb 2010	0
	Caching & Application Cache in Cluster Locked	Saad Zaman 22 Apr 2019	Saad Zaman 1 May 2019	15
	Caching and header expires in 1.9 Locked	james hill 19 Mar 2012	Floyd Saner 29 Mar 2012	2
	Caching documentation (at last!) Locked	Howard Miller 12 June 2014	Howard Miller 20 June 2014	2
	Caching the moodledata directory Locked	Roland Chapin 23 May 2017	Jeff White 16 June 2017	3
	Caching web pages to enhance performance--where to include directives Locked	Ashok Harnal 2 Mar 2013	Visvanath Ratnaweera 7 Mar 2013	9
	calculate performance Locked	Amir Mohammadi 7 Dec 2020	Visvanath Ratnaweera 8 Dec 2020	1
	Calculating the Needed Size and Speed of a Server Locked	Don Hinkelman 8 Apr 2004	Gavin McCullagh 19 Oct 2005	9
	Calendar's Performance Locked	Eugene Dest 9 Mar 2009	Eugene Dest 11 Mar 2009	3
	Can 2.4 run on a Linux red hat 5.8 server - what is the best mysql for it Locked	Eric Hagley 15 Feb 2013	Visvanath Ratnaweera 16 Feb 2013	6
	Can anyone recommend an OS Locked	M Y 1 Mar 2006	Maik Riecken 9 June 2006	36
	Can anyone share a performant Redis cache configuration? Locked	wz z 13 Mar 2019	Howard Miller 13 Mar 2019	2
	Can backup of data w/ 3rd party sw cause problems? Locked	Bob Majors 11 Oct 2006	Bob Majors 26 Oct 2006	5
	can i add SQL index to speedup a sql query without issue on moodle database structure ? Locked	REMI PICARD (substitute) 19 Nov 2019	Howard Miller 19 Nov 2019	1
	Can I built moodle site with EasyPHP+windows server2003+moodle2.5.2 Locked	rui zeng 10 Oct 2013	rui zeng 10 Oct 2013	0
	Can I delete unzip folder of eaccelerator? Locked	Mohd Heidzir heidzir 17 Apr 2007	Mohd Heidzir heidzir 24 Apr 2007	2
	Can I modify the .cnf files, delete the innodb files and restart? Locked	Jerry Lau 1 Oct 2018	Howard Miller 1 Oct 2018	1
	Can I move moodledata to a different location? Locked	José Francisco Sala García 28 June 2020	Ken Task 28 June 2020	7
	Can I put moodle into a CD and work it perfectly? Locked	Asier Suarez 5 Apr 2006	Tomas A. Ramirez Andujar 11 Jan 2008	13
	Can jMeter Testing of a Moodle - LDAP Authentication Locked	Ken Task 8 June 2016	Ken Task 8 June 2016	3
	Can moodle 1.9 support 1000 concurrent users Locked	rolio rolio 29 July 2009	rolio rolio 29 July 2009	3
	Can Moodle handle > 100,000 hits/day? Locked	Lawrence Khoo 17 Mar 2004	Lawrence Khoo 25 Mar 2004	8
	Can Moodle run as distributed? Locked	Jean Jones Grey 30 Sept 2014	Dan Marsden 30 Sept 2014	1
	Can moodle serve huge numbers of users? Locked	Ahmed Ibrahim 17 Jan 2017	Dan Marsden 15 Feb 2017	9
	Can moodle support quiz with 600 concurrent users and 2000 concurrent users learning in other ... Locked	Nawaphon K.bawon 23 Oct 2019	Nawaphon K.bawon 28 Oct 2019	6
	Can Moodle work with mysql 3.2.3-55 and a few other questions Locked	Nita Hickok 28 Apr 2005	Martín Langhoff 29 Apr 2005	5
	Can multiple Moodle instances share a Redis cache store as their application cache? Locked	Visvanath Ratnaweera 21 June 2021	Sergio Rabellino 22 June 2021	4
	can not open recent msg history Locked	Serg Tolpygin 16 Sept 2015	Serg Tolpygin 16 Sept 2015	0
	Can not open Site Administration, it keep loading forever Locked	Amira Elsayed 1 Oct 2020	Thorsten Bartel 22 Oct 2020	4
	Can PC class machine support 250 concurrent users? Locked	fouzia imran 9 Aug 2006	Iñaki Arenaza 25 Aug 2006	22
	Can Redis Shared Application cache run on local nodes? Locked	Jan Derriks 10 Nov 2018	Jan Derriks 7 Dec 2018	5
	Can you help me with a hardware reccomendation Locked	Brad Hess 14 Oct 2010	Visvanath Ratnaweera 17 Oct 2010	1
	Can you help me? Locked	David Atzet 8 Jan 2008	David Atzet 12 Jan 2008	2
	Can't login after mysql 4.0 -> 4.1 upgrade Locked	Dan Katz 10 Oct 2006	Dan Katz 11 Oct 2006	3
	Can't seem to get sessions saved in memcached Locked	Matej Zerovnik 28 Oct 2014	Mehmet Sen 16 Oct 2015	12
	Can't setup memcached for sessions Locked	Regina B 23 Aug 2018	Regina B 23 Aug 2018	0
	Cannot Click Menu in Moodle Locked	Esther I.K 28 Sept 2022	Esther I.K 18 Nov 2022	20
	Cannot connect error message Locked	Marc Dastous 24 Apr 2004	Zbigniew Fiedorowicz 24 Apr 2004	1
	cannot download php_apc.dll for windows server Locked	Mohan V 23 Apr 2009	Bobby Snow 20 May 2009	6
	Cannot find session record idpp9ip5gf8gp7faubq2rcet01 for user 2433, creating new session., Locked	Anderson Oliveira 27 Apr 2021	Carlton flores 25 Dec 2021	36
	Cannot obtain session lock for sid Locked	Dave Weninger 15 Mar 2021	Visvanath Ratnaweera 25 Mar 2021	11
	cannot purge standard log in Moodle 3.1 although set keep standard log only for 5 days Locked	William Chan 15 July 2017	Jeff White 20 July 2017	2
	Cannot use .PHP extensions Locked	T H 17 Apr 2005	Chris Valentine 22 Nov 2005	2
	Capacity Locked	Alison Wright 1 Aug 2006	Tom Ceresini 3 Aug 2006	6
	Capture Cards on Moodle Locked	Lawrence Mallari 29 Jan 2015	ryan sanders 29 Jan 2015	1
	CAS Browser Looping Locked	Michael Haskell 25 Oct 2012	jason everling 7 Nov 2012	4
	CDN for beginners Locked	H TNG 28 Aug 2018	Mathew Gancarz 30 Aug 2018	2
	Celeron D Server Locked	Ruban Jayathas 29 Nov 2007	Visvanath Ratnaweera 29 Nov 2007	1
	Central Moodle instance sync to local instance - updated Locked	Paa Kwesi 25 Jan 2017	Paa Kwesi 13 Mar 2017	14
	Centralized versus decentralized hosting of moodle (VLE's) in HE - what's the future? Locked	Don Quixote 26 Mar 2004	Martín Langhoff 20 May 2005	31
	Certain actions very slow regardless of load Locked	Henry Foster 29 Oct 2014	Henry Foster 3 Dec 2014	5
	Certain pages loading very slow Locked	Albert R. 9 Apr 2019	Sarang Nair 6 Aug 2019	3
	Certificate problems Locked	Denny Broderick 13 Jan 2006	Rory Allford 1 Feb 2006	2
	Certified plugin Locked	Sergio Rodriguez 2 Oct 2021	Sergio Rodriguez 4 Oct 2021	2