Hardware and performance | Moodle.org

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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
	Performance with 2500 concurrent users Locked	Stephen Tod 18 Apr 2019	Howard Miller 21 Apr 2019	5
	Slow from University server Locked	Scott Bingham 17 Apr 2019	Emma Richardson 17 Apr 2019	1
	External database log - will it copy existing? Locked	Diane Soini 15 Apr 2019	Howard Miller 16 Apr 2019	2
	Users bounced off the server? Locked	heli g 12 Apr 2019	Jerry Lau 13 Apr 2019	2
	Flushing all the caches causes a fatal error Locked	Service Usagers du Numérique 12 Apr 2019	Service Usagers du Numérique 13 Apr 2019	2
	Slowest queries are inserting single row into mdl_sessions Locked	Diane Soini 9 Apr 2019	Jerry Lau 17 Apr 2019	14
	Certain pages loading very slow Locked	Albert R. 9 Apr 2019	Sarang Nair 6 Aug 2019	3
	Moodle + AWS EFS + filecachesd is it recommended? Locked	Christos Savva 2 Apr 2019	Ben Kahn 31 May 2019	2
	Cluster setup Help Locked	Simon Powell 22 Mar 2019	Visvanath Ratnaweera 29 Mar 2019	19
	Moodle Performance Issue with 4 users Locked	Paul Young 15 Mar 2019	Paul Young 20 Mar 2019	22
	Can anyone share a performant Redis cache configuration? Locked	wz z 13 Mar 2019	Howard Miller 13 Mar 2019	2
	10K Users - 2 hours Exam Locked	uk nites 10 Mar 2019	Séverin Terrier 12 Mar 2019	2
	Moodle performance issues with mysql Locked	Sreepathy T L 10 Mar 2019	Chris Fryer 18 Feb 2020	8
	XAMPP on Windows Server 2012 running in production Locked	Michael Hankins 9 Mar 2019	Ken Task 16 Mar 2019	19
	Data Privacy and Large Moodles Locked	David Dixon 8 Mar 2019	David Dixon 12 Mar 2019	2
	What Size Should ramdisk/tmpfs Be for 'temp' and 'cache' ? Locked	Paul Lindgreen 5 Mar 2019	Howard Miller 20 Mar 2019	11
	JMeter Moodle Test Locked	Richard Brown 26 Feb 2019	Richard Brown 26 Feb 2019	0
	The right Database to use Locked	Hal MacLean 26 Feb 2019	Hal MacLean 28 Feb 2019	10
	Web Access of moodle console is slow & www-root consuming 100% CPU Utilization. Locked	Mohd Hassan Uddin 25 Feb 2019	Mohd Hassan Uddin 25 Feb 2019	0
	Moodle creating Excessive I/Os Locked	Greg Merriman 21 Feb 2019	Andrew Lyons 22 Feb 2019	3
	Off-boarding ClamAV from web nodes? Locked	Jeff White 20 Feb 2019	Jeff White 7 May 2019	14
	performance with mysqltuner Locked	mimi nom 19 Feb 2019	Ken Task 20 Feb 2019	2
	Error communicating with server Locked	Randy Foster 19 Feb 2019	Randy Foster 19 Feb 2019	0
	moodle in azure Locked	MARIA CENTENO 19 Feb 2019	Mathew Gancarz 21 Feb 2019	7
	Moodle deployment on cloud recommended specifications Locked	Pushpendra Vishal Kaushal 13 Feb 2019	Visvanath Ratnaweera 13 Feb 2019	1
	Overriding server timeout parameter can create chaos Locked	Pierre Raynaud 12 Feb 2019	Andrew Lyons 14 Feb 2019	3
	Exclude webservice user from Moodle logs Locked	Richard van Iwaarden 7 Feb 2019	Richard van Iwaarden 7 Feb 2019	0
	Moodle crashing with "Too many open files" Locked	Debbie Unterseher 7 Feb 2019	Debbie Unterseher 12 Feb 2019	2
	Email sent via email_to_user() needs to be queued for background sending Locked	Chris Yust 2 Feb 2019	Chris Yust 5 Feb 2019	7
	Moodle System Requirements for 500 Active Concurrent User Locked	Daoud El Gharib 28 Jan 2019	Visvanath Ratnaweera 31 Jan 2019	6
	Student upload issues only on certain network Locked	Jessica Dawson 24 Jan 2019	Ken Task 26 Jan 2019	7
	Apache CPU High Usage when opening tasks Locked	Marc Celeiro 17 Jan 2019	Ramzi Hosni 22 Feb 2019	21
	Moodle server resources for 1000+ users Locked	Redzy Red 16 Jan 2019	Ken Task 17 Jan 2019	5
	Timeouts during an exam Locked	Danishka Navin 12 Jan 2019	Howard Miller 21 Jan 2019	13
	Using config.php for configuration management -> performance impact? Locked	Alistair Spark 11 Jan 2019	Alistair Spark 6 Mar 2019	6
	Slow backup and restore of small quizes where there's a lot of question in course Locked	Yedidia Klein 13 Dec 2018	Jerry Lau 13 Dec 2018	1
	Requirement for Migrating My Moodle School Locked	Arnold Yu 10 Dec 2018	Visvanath Ratnaweera 11 Dec 2018	12
	NFS for dataroot Locked	Keith Weinheimer 7 Dec 2018	chaitanya varanasi 15 Feb 2019	13
	How to test performance? Locked	Paul Lindgreen 24 Nov 2018	Jan Derriks 1 Dec 2018	3
	Hardware requirement for my setup Locked	Muhammad Abdullah Ijaz 22 Nov 2018	Visvanath Ratnaweera 23 Nov 2018	2
	MCQ with random question performance issue Locked	Mihir J 22 Nov 2018	Tim Hunt 23 Nov 2018	3
	Recommended specs - new moodle installation Locked	Basti Bunz 14 Nov 2018	Ralf Hilgenstock 19 Nov 2018	2
	Anyone running HTTP/2? Locked	Rex Lorenzo 14 Nov 2018	Rex Lorenzo 17 Nov 2018	7
	Can Redis Shared Application cache run on local nodes? Locked	Jan Derriks 10 Nov 2018	Jan Derriks 7 Dec 2018	5
	PHP-cgi.exe 100% load CPU one core Locked	István Farkas 9 Nov 2018	István Farkas 11 Nov 2018	6
	Big jumps in mysql memory usage Locked	David Garden 7 Nov 2018	Howard Miller 8 Nov 2018	7
	Php memory_limit, what is the good way Locked	Aurélien Besson 6 Nov 2018	Ricardo Caiado 28 June 2020	10
	SCORM Package breaks from 500 errors on image files? Locked	David Garden 5 Nov 2018	Matteo Scaramuccia 6 Nov 2018	1
	Uploaded files have long post-processing time Locked	Rex Lorenzo 3 Nov 2018	Rex Lorenzo 3 Nov 2018	1
	Questions about load balancing methods and the session cache Locked	Andrew Howe 31 Oct 2018	Marcus Green 4 Nov 2018	6
	How to test performance, with and without Wincache Locked	Paul Lindgreen 31 Oct 2018	Paul Lindgreen 31 Oct 2018	0
	Course-level backup on large-ish instance Locked	Mark van Hoek 30 Oct 2018	Susan Mangan 1 Nov 2018	2
	Hardware for 100 concurrent users Locked	Mohammad Hallak 27 Oct 2018	Howard Miller 29 Oct 2018	10
	moodle for digital exam for about 70 students Locked	sara HHH 25 Oct 2018	sara HHH 31 Oct 2018	8
	Moodle a mount drive on amazon s3 or any other storage solution Locked	Daniel Garcia 25 Oct 2018	Daniel Garcia 31 Oct 2018	5
	What does "automated backup are already running. Execution delayed"? Locked	Jerry Lau 15 Oct 2018	Visvanath Ratnaweera 21 Oct 2018	2
	'core_renderer' is taking most of time while loading a page Locked	Abdul Ghaffar 11 Oct 2018	Visvanath Ratnaweera 4 Dec 2018	7
	Might have found the cause of slowness in DB Locked	Jerry Lau 3 Oct 2018	Visvanath Ratnaweera 11 Oct 2018	7
	optimize performance Locked	solmaz naderi 2 Oct 2018	Andrew Lyons 2 Sept 2019	6
	Can I modify the .cnf files, delete the innodb files and restart? Locked	Jerry Lau 1 Oct 2018	Howard Miller 1 Oct 2018	1
	What do these stats mean in footer Locked	Jerry Lau 28 Sept 2018	AL Rachels 21 Oct 2018	7
	Moodle Webservices and AWS ElasticCache(memcached) problem Locked	Christos Savva 27 Sept 2018	Christos Savva 27 Sept 2018	0
	Quizzes are rending Moodle useless :-( Locked	Jerry Lau 27 Sept 2018	Jerry Lau 25 Nov 2018	37
	Speeding up Moodle - reindexing entire database would help? Locked	Jerry Lau 26 Sept 2018	Howard Miller 27 Sept 2018	6
	from M3.1 to M3.5 : database issue ? Locked	Michel DENIS 20 Sept 2018	Michel DENIS 25 Sept 2018	18
	opcache issue on Moodle 3.4 and PHP 7.0.x Locked	William Chan 6 Sept 2018	William Chan 12 Oct 2018	7
	Moodle increase size Locked	Yoel Gutierrez 31 Aug 2018	Yoel Gutierrez 26 Sept 2018	3
	CDN for beginners Locked	H TNG 28 Aug 2018	Mathew Gancarz 30 Aug 2018	2
	Moodle 3.4 -> 3.5 upgrade time Locked	sam marshall 23 Aug 2018	sam marshall 24 Aug 2018	1
	Can't setup memcached for sessions Locked	Regina B 23 Aug 2018	Regina B 23 Aug 2018	0
	Major problems with Moodledata on NFS Locked	Albert Ramsbottom 23 Aug 2018	Visvanath Ratnaweera 25 Aug 2018	4
	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
	Timing Out Locked	Steve Hyland 11 Aug 2018	Rick Jerz 13 Aug 2018	12
	Hardware requirements for a minimum traffic of concurrent users Locked	Javier Quinto 7 Aug 2018	Ken Task 11 Aug 2018	7
	Server hardware for 1000 concurrent users Locked	Jkail MOENE 31 July 2018	Albert Ramsbottom 31 July 2018	1
	grunt css Locked	Дмитрий Пименов 31 July 2018	Дмитрий Пименов 31 July 2018	3
	Need a script that would display a node number of a load balanced system - 5 nodes Locked	Ken Task 27 July 2018	Andreas Panagiotopoulos 9 Aug 2018	15
	Groups and performance Locked	Maribel Rosich 27 July 2018	Howard Miller 27 July 2018	1
	Micro Focus for load testing Locked	Howard Miller 25 July 2018	Howard Miller 25 July 2018	0
	moodle memcached being used for sessions - confused by what I see Locked	John Joubert 20 July 2018	John Joubert 3 Aug 2018	5
	Site home very slow, 39 seconds Locked	Albert Ramsbottom 18 July 2018	Howard Miller 25 July 2018	12
	How to replicate in moodle? Locked	Danishka Navin 15 July 2018	Tim Hunt 1 Aug 2018	10
	Advice on server to run multiple Moodle sites Locked	Jason Lane 11 July 2018	Paul Raper 16 July 2018	9
	This is exciting as I am back, NFS question Locked	Albert Ramsbottom 9 July 2018	Matteo Scaramuccia 10 July 2018	8
	Event monitoring Locked	Helen Brennagh 4 July 2018	Helen Brennagh 9 July 2018	2
	Big Blue Button and number of users Locked	Javier Tejera 29 June 2018	Albert Ramsbottom 9 July 2018	3
	Problems crashing on the server Locked	Franky Vallori 29 June 2018	Albert Ramsbottom 9 July 2018	7
	File vs Database for Sessions, moodle 3.3 Locked	Paul Lindgreen 22 June 2018	Paul Lindgreen 11 Oct 2018	6
	Moodle 3.2 server unable to load 500 users Locked	Vishwa H 16 June 2018	Usman Asar 23 June 2018	11
	Moodle SqlDump is 2GB, but MySQL database is only a few Mb... ?? Locked	Tom Smith 15 June 2018	Ken Task 20 June 2018	10
	What may cause a coding error - failed to unserialise data from file. Either failed to read, or ... Locked	Sandy Stockholm 14 June 2018	Albert Ramsbottom 9 July 2018	2
	about the top command Locked	mimi nom 7 June 2018	mimi nom 13 June 2018	8
	JMeter "Out of Memory” Failure Locked	Jerry Lau 31 May 2018	Jerry Lau 31 May 2018	2
	Settings for memcache for sessions cache - can't find a moodle doc Locked	John Joubert 30 May 2018	John Joubert 30 May 2018	1
	Has Anyone Used mysqlslap for DB Performance Testing? Locked	Ken Task 27 May 2018	Ken Task 27 May 2018	2
	Moodle installation in intel itanium Windows 2003 system? Locked	Ramesh Nair 23 May 2018	Visvanath Ratnaweera 30 May 2018	9
	Server specs Locked	Ahmed Nouh 23 May 2018	Visvanath Ratnaweera 2 June 2018	9
	Moodle clustering on Windows servers Locked	Payman Zafar 21 May 2018	Payman Zafar 29 May 2018	5
	Status indicator light for moodlebox on raspberry pi 3b+ Locked	Cade Dopp 21 May 2018	AL Rachels 23 May 2018	6
	A starndardized quiz to benchmark a Moodle installation? Locked	Visvanath Ratnaweera 21 May 2018	Tim Hunt 23 May 2018	4