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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
	Boosting RSS block and messaging performance Locked	Mark Stevens 8 Sept 2005	Daryl Hawes 16 Sept 2005	7
	What is the minimum MySQL version for 1.5? Locked	Michael Penney 14 Aug 2005	Jeff Graham 17 Aug 2005	7
	Lentezza della nuova versione 1.5 (Version 1.5 is very slow) Locked	claudio premarini 25 July 2005	Sebastian Hensel 31 Aug 2005	7
	Performance Issues with Moodle 1.4.3 Locked	Mark Davies 30 June 2005	Miles Tillinger 3 July 2005	7
	Windows XAMPP vs LAMP Locked	M Ghazaly Abdul Rahman 31 May 2005	HJWUCGA INC. 6 Feb 2009	7
	apache benchmarking... Locked	Genner Cerna 15 Mar 2005	Genner Cerna 4 Apr 2005	7
	Problems with 100 hundred users with Postgres Locked	Graciela Vargas 10 Mar 2005	Eloy Lafuente (stronk7) 12 Mar 2005	7
	My Own Server Locked	Jim Eyster 7 Dec 2004	Marcus Green 23 Dec 2004	7
	Recommendation for a server for 2000 students - Locked	Michele Balazs 30 Sept 2004	Genner Cerna 1 Oct 2004	7
	Win 2003 problem Locked	Mark Hope 20 Aug 2004	Peak Becker 27 Sept 2004	7
	Using Fantastico Locked	Marilyn Fleming 15 Aug 2004	Timothy Takemoto 29 Aug 2004	7
	UK Data Protection Act Locked	Mark Berthelemy 2 Mar 2004	Rick Barnes 11 Jan 2006	7
	Fatal Error Locked	Robert Jones 8 Jan 2004	Martin Dougiamas 13 Jan 2004	7
	ERROR: You need to create the directory /home/moodledata with web server write access Locked	Daniele Giunta 17 Dec 2003	Tim Hunt 23 Sept 2009	7
	sudden slowdown Locked	Thomas Haynes 18 Sept 2003	Thomas Haynes 26 Sept 2003	7
	Probable Usage Locked	Chris U 20 Feb 2003	Martin Dougiamas 21 Apr 2003	7
	Performance under heavy load Locked	Al-Ayham Saleh 3 Jan 2003	Martin Dougiamas 11 Jan 2003	7
	What will give a better performance	Jan van Leeuwen 20 Feb 2024	Visvanath Ratnaweera 22 Feb 2024	6
	Observability / monitoring	Matt Wallace 16 Nov 2023	Matt Wallace 21 Nov 2023	6
	Course Backup, Restoration and Deletion is very slow	Marco Cigna 1 Nov 2023	Marco Cigna 1 Nov 2023	6
	Very slow loading or performance after changing theme to Edwiser RemUI Pro	Esther I.K 30 Aug 2023	Esther I.K 30 Aug 2023	6
	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
	Unexplained proxy_fcgi:error messages in server logs Locked	Stuart Anderson 11 Mar 2022	Stuart Anderson 15 Aug 2022	6
	Availability Restrictions Performance Issue Locked	Deleted user 8 Mar 2022	Deleted user 9 Mar 2022	6
	Moodle 3.11 Dashboard performance with completion tracking enabled Locked	Thom Rawson 13 Nov 2021	Emma Stone 21 Jan 2023	6
	MySql 5.6 upgrade to 5.7 and 8.0 - abysmal performance noted Locked	Perry Way 30 June 2021	Perry Way 30 June 2021	6
	Table Partitioning - PostgreSQL / 99M lines, 54Gb Locked	Ricardo Caiado 28 Apr 2021	Ricardo Caiado 29 Apr 2021	6
	Moodle project for 3000 concurrent users Locked	Islam Waheed 9 Mar 2021	Visvanath Ratnaweera 13 Mar 2021	6
	Ubuntu 16.04 + Apache + X-SendFile not working (no images and scripts) Locked	Jesus Vte. Vila 8 Nov 2020	Jesus Vte. Vila 1 Sept 2021	6
	Extremely slow when clicking the "save" button while submitting an assignment Locked	Hideki Matsuura 1 Nov 2020	Hideki Matsuura 11 Nov 2020	6
	Unable to run moodle beyond 250 users. (II) Locked	Lien Nell 31 Aug 2020	Alex Rowe 5 Sept 2020	6
	Moodle Sever Performance Locked	Abdullah Zayed 17 Aug 2020	Visvanath Ratnaweera 17 Aug 2020	6
	Poor Quiz Performance: 32 GB Ram, 24 Cores Locked	Abhijit M 28 July 2020	Visvanath Ratnaweera 29 July 2020	6
	Quiz / Server Crash Locked	Subrahmanyam V V 11 July 2020	Visvanath Ratnaweera 15 July 2020	6
	Moodle 2.4 Performance Issue , Need Help Locked	Hamza Khan 9 July 2020	Hamza Khan 10 July 2020	6
	Moodle performance Locked	sovannak Soeung 7 July 2020	Howard Miller 7 July 2020	6
	Login 1,200 students at a time on quizzes Locked	Mario Gharib 2 June 2020	Tim Hunt 8 May 2021	6
	Automated backup straight to other server? Locked	Nikolaas Dries 8 May 2020	Nikolaas Dries 8 June 2020	6
	Architecture for several schools Locked	Juan Daniel Burró Aláez 1 May 2020	Juan Daniel Burró Aláez 4 May 2020	6
	Number of users and hosting Locked	Javier Tejera 2 Mar 2020	Visvanath Ratnaweera 3 Mar 2020	6
	views on performance related issues when using embedded powerpoints in a moodle course Locked	altan ahmet 2 Dec 2019	James Steerpike 12 Dec 2019	6
	Is this VPS, 3 vCPU / 3 GB RAM / 100 GB SSD / Linux Server, sufficient for 50 students? Locked	Jason Coetzee 14 Nov 2019	Rick Jerz 14 Nov 2019	6
	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
	Moodle System Requirements for 500 Active Concurrent User Locked	Daoud El Gharib 28 Jan 2019	Visvanath Ratnaweera 31 Jan 2019	6
	Using config.php for configuration management -> performance impact? Locked	Alistair Spark 11 Jan 2019	Alistair Spark 6 Mar 2019	6
	PHP-cgi.exe 100% load CPU one core Locked	István Farkas 9 Nov 2018	István Farkas 11 Nov 2018	6
	Questions about load balancing methods and the session cache Locked	Andrew Howe 31 Oct 2018	Marcus Green 4 Nov 2018	6
	optimize performance Locked	solmaz naderi 2 Oct 2018	Andrew Lyons 2 Sept 2019	6
	Speeding up Moodle - reindexing entire database would help? Locked	Jerry Lau 26 Sept 2018	Howard Miller 27 Sept 2018	6
	Slow Load Time When Saving a new Activity or Editing an Existing one Locked	Ahmed Aly 19 Aug 2018	Ahmed Aly 27 Aug 2018	6
	File vs Database for Sessions, moodle 3.3 Locked	Paul Lindgreen 22 June 2018	Paul Lindgreen 11 Oct 2018	6
	Status indicator light for moodlebox on raspberry pi 3b+ Locked	Cade Dopp 21 May 2018	AL Rachels 23 May 2018	6
	Load many course categories faster Locked	Felipe Dos Santos 16 May 2018	Felipe Dos Santos 18 May 2018	6
	Roadmap for deploying solution for 2000-4000 students Locked	Isaac Marecheau 10 May 2018	Howard Miller 14 May 2018	6
	Be Objective: MS SQL Server Enterprise or MySQL enterprise & HA setup recommendations Locked	Jerry Lau 3 Mar 2018	Jerry Lau 23 Mar 2018	6
	Refresh Mod Calendar Events Task - Slow Locked	Grady Miller 2 Mar 2018	Russell Morriss 1 Aug 2018	6
	Seeking Anyone who host Moodles on Rackspace .... Locked	Ken Task 31 Jan 2018	Ken Task 26 Mar 2018	6
	Private Server MOODLE Access Fail Locked	Gary Marsh 28 Dec 2017	Ken Task 30 Dec 2017	6
	Where to put moodledata SQL or web server? Locked	J L 5 Dec 2017	Mathew Gancarz 6 Dec 2017	6
	How to interpret MySQL-Tuner Perl results? Locked	Tim Kamps 15 Aug 2017	Tim Kamps 15 Aug 2017	6
	CPU overloaded Locked	Bernat Martinez 3 July 2017	Bernat Martinez 6 July 2017	6
	quiz - advise needed Locked	jhon grenn 11 June 2017	jhon grenn 28 June 2017	6
	Student Profile Data (Default) Not Updating Locked	Troy May 15 Feb 2017	Troy May 19 Feb 2017	6
	Web Server + Database selection/preferences (Apache, MySQL?MariaDB, Nginx, PostgreSQL) Locked	Jerry Lau 22 Dec 2016	Ricardo Caiado 13 Jan 2017	6
	Difficulty using memcached to store moodle session Locked	Daniel Tran 24 Nov 2016	Daniel Tran 26 Nov 2016	6
	Cache Settings in config.php - help Locked	Noveck Gowandan 25 Oct 2016	Andrew Lyons 5 Nov 2016	6
	Moodle running of Amazon EFS Locked	Christos Savva 13 Sept 2016	Christos Savva 14 Oct 2016	6
	moodle connect speed Locked	Anderson Hsu 8 Sept 2016	Anderson Hsu 13 Sept 2016	6
	Apache best MPM: Prefork, Worker or Event Locked	Naaman Fallouh 27 July 2016	Visvanath Ratnaweera 28 July 2016	6
	Moodle for a school with around 3000 students Locked	sushumna rao 15 June 2016	Howard Miller 20 June 2016	6
	Strange NFS problem in rare case of deleting/creating same file Locked	sam marshall 23 May 2016	Albert Ramsbottom 26 May 2016	6
	How to load balancing moodle Locked	Doan Dung 27 Apr 2016	Albert Ramsbottom 9 May 2016	6
	Crashing under increased activity... But not a lot ... 20 users maybe at the same time? Locked	Billy Zwiener 27 Apr 2016	Billy Zwiener 27 Apr 2016	6
	Why is 3.0 running so slow Locked	Clinton Randolph 11 Feb 2016	Ken Task 12 Feb 2016	6
	Any easy way to get notified if the cron is not running? Locked	Rachel Martin 4 Feb 2016	Visvanath Ratnaweera 9 Feb 2016	6
	filling up drive Locked	james Jones 3 Dec 2015	Visvanath Ratnaweera 5 Dec 2015	6
	1200 users Locked	Michael Shea 14 Sept 2015	Howard Miller 15 Sept 2015	6
	Recommend Settings Amazon AWS (Managed by Cloudways) Locked	Seth Mengal 10 Sept 2015	Seth Mengal 9 Dec 2015	6
	Maintaining large Log table Locked	Richard Flurey 2 Apr 2015	Zabelle Motte 2 Dec 2016	6
	Repeated flood of requests causes all database connections to be used up? Locked	Mathew Gancarz 27 Mar 2015	Howard Miller 28 Mar 2015	6
	Memcached Moodle site still DB row locking Locked	jerrett fowler 27 Feb 2015	jerrett fowler 3 Mar 2015	6
	cron job on a hosted site Locked	Alex Delaforce 27 Dec 2014	Alex Delaforce 31 Dec 2014	6
	mdl_logstore_standard_log 35 million rows Locked	Danny Wahl 20 Oct 2014	sam marshall 23 Oct 2014	6
	Server crashes at +20 concurrent users Locked	Fabulous Phil 10 Oct 2014	Howard Miller 16 Oct 2014	6
	Slow page loads Locked	john allen 7 Oct 2014	john allen 14 Oct 2014	6
	is MySQL 5.5 Ok for Moodle 1.9 Locked	Bernat Martinez 3 Sept 2014	Rick Jerz 4 Sept 2014	6
	File or Database Sessions? Locked	Marcus Green 25 July 2014	Mark Picker 4 Mar 2015	6
	PHP 5.4 and Suse Linux Problems Locked	Graham Stone 14 July 2014	Peter Dorman 23 July 2014	6
	2.6, MUC and Memcache Locked	James McLean 8 July 2014	Colin Campbell 11 July 2014	6
	installing an enroll plugin. dependancy problem. Locked	john Simpson 7 July 2014	john Simpson 8 July 2014	6
	Timeout problems? Locked	Nathan Bruley 20 June 2014	Nathan Bruley 19 July 2014	6
	question about required hardware Locked	neama ageb 21 May 2014	Guillermo Madero 22 May 2014	6
	jMeter and Quizzes Locked	Deleted user 10 Apr 2014	Jan Derriks 27 Dec 2015	6
	Moodle Connection Time Out Issue Locked	N B 1 Apr 2014	C Behan 26 Feb 2016	6
	hardware software sizing Locked	Tobias Olausson 21 Feb 2014	Tobias Olausson 21 Feb 2014	6
	Server Hardware - look OK? Locked	Rob Boris 23 Jan 2014	Howard Miller 5 Feb 2014	6
	Massive forum emissions solution ? Locked	Valery Fremaux 3 Jan 2014	Tim Hunt 1 July 2014	6
	Slow cache purge etc. Locked	Rikard E 20 Nov 2013	Rikard E 5 Mar 2014	6
	Significant slow down on login Locked	david english 10 Oct 2013	Visvanath Ratnaweera 14 Oct 2013	6
	Performance on Dreamhost VPS Locked	Jorge Ballesteros 12 Sept 2013	Usman Asar 22 Sept 2013	6