Hardware and performance

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.

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List of discussions. Showing 100 of 2963 discussions
Discussion	Started by	Last post	Replies
Help! Database server CPU maxed out Locked	Ben Kahn 27 Aug 2019	Jerry Lau 12 Sep 2019	14
Plugin AJAX slow to load	Ben Kahn 13 May 2020	Ben Kahn 14 May 2020	2
mdl_cache_text Locked	Bengt Fellbe 4 Dec 2006	Robert Brenstein 11 Jun 2009	4
Moodle 2.4 much slower than 2.3 on Windows Server Locked	Benjamin St.Germain 28 Mar 2013	Paul L 28 Nov 2013	22
Extending browser cache Locked	Benjamin Bøndergaard 13 Aug 2019	Benjamin Bøndergaard 14 Aug 2019	3
idnumber=NULL in mdl_course_modules Locked	Bente Olsen 19 Jan 2011	Bente Olsen 20 Jan 2011	2
overload warning, without commensurate traffic Locked	Benz Kohlee 28 Apr 2006	Benz Kohlee 12 May 2006	4
is MySQL 5.5 Ok for Moodle 1.9 Locked	Bernat Martinez 3 Sep 2014	Rick Jerz 4 Sep 2014	6
CPU overloaded Locked	Bernat Martinez 3 Jul 2017	Bernat Martinez 6 Jul 2017	6
JMeter trouble Locked	Bernat Martinez 7 Jul 2017	Bernat Martinez 21 Jul 2017	2
Design Constraints of Moodle Locked	Bertie Corrie 2 Apr 2014	Bertie Corrie 2 Apr 2014	3
Change Limit Size Upload File in iBook G4 Locked	Biamin Ahmad 13 Nov 2005	Chris Valentine 22 Nov 2005	2
Hardware Locked	Bidur Shrestha 13 Apr 2007	Bidur Shrestha 13 Apr 2007	0
Workaround to load files without file.php Locked	Biel Frontera 14 Jan 2013	Simon Story 15 Jan 2013	2
How to PHP accelerate Moodle 1.2? Locked	Bill Bimber 16 Feb 2004	Martin Dougiamas 16 Feb 2004	1
questions on server performance Locked	Bill Click 3 Jun 2005	Howard Miller 4 Jun 2005	4
Which PHP?? Locked	Bill Click 9 Jun 2005	ryan wise 13 Jun 2005	3
Upgrades Locked	Bill Meister 8 May 2009	Eric Hagley 8 May 2009	1
How do I turn logging off? Locked	Bill Parsons 18 Feb 2010	Bill Parsons 18 Feb 2010	0
Slowdown and incompatability in move from 2.2. to 2.3 Locked	Bill Steele 22 Sep 2012	Visvanath Ratnaweera 25 Sep 2012	5
dcachesize on server going high on my server and causing server problems Locked	Billy Zwiener 19 Dec 2015	Billy Zwiener 21 Dec 2015	2
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
How might I go about purging huge tables/ can I delete quiz attempts PAST a certain date only? Locked	Billy Zwiener 27 Apr 2016	Tim Hunt 28 Apr 2016	3
trying to preview in a proxy but getting some weird behavior. Is this normal of a proxy? Locked	Billy Zwiener 30 Apr 2016	Billy Zwiener 30 Apr 2016	0
increase session_data cache size for LMS users Locked	Billy Zwiener 25 Jun 2016	Billy Zwiener 25 Jun 2016	0
Hardware Loadbalancer for Moodle Locked	Bipin Das 11 Jun 2009	Carlos Romero 15 Jun 2009	3
Apache Configuration for 2000 Users for Quiz ?? Locked	Bipin Das 15 Jun 2009	Martín Langhoff 18 Jun 2009	13
Large Scale Moodle Implementation Help Locked	Bipin Das 15 Jul 2009	Justin Haaga 27 Aug 2009	7
Mapped network drive not working as Moodle Data Directory Locked	Bjorn Jurgens 26 Nov 2005	M Moodley 11 Dec 2005	1
Proxy balancer and stickysession value Locked	Bko 83 21 Jul 2009	Bko 83 21 Jul 2009	0
Server hardware recommendations; system admin time required Locked	Bob Majors 21 Sep 2004	Thomas Haynes 25 Sep 2004	2
AMP: Individual install or all-in-one Locked	Bob Boufford 16 Nov 2004	Bob Boufford 17 Nov 2004	2
What skills does a server admin need? Locked	Bob Majors 11 Mar 2005	iudicium ferat 7 Apr 2005	3
Can backup of data w/ 3rd party sw cause problems? Locked	Bob Majors 11 Oct 2006	Bob Majors 26 Oct 2006	5
huge database Locked	bob goossens 28 Nov 2006	bob goossens 4 Dec 2006	2
Planning new server hardware; and deciding between WAMP & LAMP Locked	Bob Majors 15 Jan 2008	Visvanath Ratnaweera 1 May 2008	17
Moodle.org platform Locked	Bob Puffer 5 Oct 2010	Jordan Tomkinson 6 Oct 2010	7
php Locked	bob humble 5 Oct 2015	bob humble 8 Oct 2015	3
Load Balanced and Auto-Scalling with Amazon EC2 Locked	Bobby Kneisel 22 May 2013	jason everling 6 Jun 2013	3
apache hang Locked	boke xu 28 Aug 2012	boke xu 28 Aug 2012	2
Moodle Host Site info requested Locked	Brad Mills 29 Oct 2008	Visvanath Ratnaweera 1 Nov 2008	5
Admin user logging into Moodle 1.9.4 behind a hardware load balancer Locked	Brad Marshall 3 Mar 2009	Brad Marshall 12 Mar 2009	5
Can you help me with a hardware reccomendation Locked	Brad Hess 14 Oct 2010	Visvanath Ratnaweera 17 Oct 2010	1
eAccelerator Locked	Brad Fisher 17 Feb 2014	jason everling 27 Mar 2014	3
Apache CPU usage shoots to >= 100%. Why? Locked	Brad Smith 28 Jul 2014	Brad Smith 7 Aug 2014	12
Moodle 2.2 connection-specific(??) hangs? Locked	Brad Smith 18 Nov 2014	Howard Miller 19 Nov 2014	5
Investigating excessive(?) DB hits Locked	Brad Smith 11 Jun 2015	Brad Smith 11 Jun 2015	3
Filesystem recommendations for cross-network HA setup? Locked	Brad Smith 12 Mar 2016	Albert Ramsbottom 6 Apr 2016	20
Assignment Submission Taking over 5 minutes Locked	Brandon Stocks 27 Mar 2017	Brandon Stocks 29 Mar 2017	2
Are You Using Virtual Servers with Moodle? Locked	Brandt Linkowski 6 Jan 2006	Mikael Ekblom 16 Jan 2006	4
Apache Memory Leak Locked	Brant Peterson 8 Feb 2008	Mark Hilliard 23 Mar 2010	27
What size server Locked	Brendan Leahy 9 Oct 2006	Ralph Patterson 17 Oct 2006	13
High CPU usage after Upgrade to 1.9.6+ Locked	Breno Jacinto 7 Nov 2009	Breno Jacinto 9 Nov 2009	2
Timeouts Locked	Brent Lee 14 Sep 2005	Brent Lee 14 Sep 2005	2
Moodle for Windows on a USB Stick Locked	Brett Drinkwater 12 May 2006	ben reynolds 29 Jul 2010	37
Moodle Performance Testing in AWS Locked	Brett Cairns 20 Jun 2013	Grant Mucha 5 Jul 2013	5
Moodle 2.4 Hardware and Performance Optimization Locked	Brett Cairns 28 Jun 2013	Brett Cairns 3 Jul 2013	2
Newbie From PA Locked	Brian Snapp 24 Mar 2006	Visvanath Ratnaweera 24 Mar 2006	1
File Size in the Moodle Web Server Locked	Brian zhang 11 Aug 2011	sam marshall 11 Aug 2011	1
/mod/quiz/view.php progressively slower Locked	brian shore 26 Jul 2013	Tim Hunt 26 Jul 2013	1
As close to 100% uptime as possible, failover server? Locked	Brian Y 9 Feb 2014	Albert Ramsbottom 11 Feb 2014	3
redis instance added but "Not Ready"	Brian Y 11 Jun 2020	Brian Y 17 Jun 2020	2
Disappearing Redis Cache Store	Brian Y 14 Nov 2020	Brian Y 14 Nov 2020	1
Uploading PowerPoint documents Locked	Bridget Derham 14 Nov 2007	A. T. Wyatt 15 Nov 2007	1
How do you change Servers? Locked	Bruce Selzler 2 Dec 2004	Dave Ray 16 Dec 2004	8
Recommendation for a Moodle Web Host Locked	Bruce Selzler 14 Jul 2005	Genner Cerna 14 Jul 2005	1
Statistics stupidly inefficient Locked	Bruce Webster 9 Mar 2009	Matteo Scaramuccia 22 Nov 2010	17
MOODLE muito Lento na minha CPU. Locked	Bruno Santos 13 Feb 2008	Wilker Melo 15 Feb 2008	1
Information on Moodle Scalability (100,000+ users) Locked	Bryan Chapman 19 Aug 2005	Samuli Karevaara 27 Sep 2005	20
Missing File Extensions Locked	Bryan Smith 13 Sep 2010	Donna Hrynkiw 14 Jun 2011	3
Scalability far can Moodle be pushed Locked	Bryan Smith 30 May 2014	Dan Marsden 3 Jun 2014	11
After upgrade to 3.9 pages display incorrectly (split from Moodle 3.9 Performance)	c p 24 Jun 2020	Helen Foster 24 Jun 2020	9
Status indicator light for moodlebox on raspberry pi 3b+ Locked	Cade Dopp 21 May 2018	AL Rachels 23 May 2018	6
Simply Storage and Bandwidth - no more services Locked	CAlex Fagundes 10 Jul 2004	CAlex Fagundes 10 Jul 2004	0
Moodle performance vs. large courses Locked	Callahan Harry 7 Dec 2015	Tim Hunt 8 Dec 2015	7
Moodle Cache Changes Locked	Callum Laverick 25 Jul 2017	Callum Laverick 28 Jul 2017	18
Moodle 3.1 Windows Cluster slow Locked	callum Wood 16 Nov 2017	Leon Stringer 17 Nov 2017	3
MySQL InnoDB_file_format setting: Antelope or Barracuda? Locked	Calvin Bu 15 Aug 2014	Mathew Gancarz 4 Jun 2015	3
Decentralized Course Materials Locked	Calvin Vong 1 Jun 2015	Rick Jerz 2 Jun 2015	4
PHP 5.0.4 or PHP 4.4 for Moodle 1.6 Locked	Carl Keil 28 Jun 2006	Ken Wilson 16 Aug 2006	6
Removing Old Records Locked	Carl Keller 5 Jul 2008	Carl Keller 5 Jul 2008	0
What files do i have to send to my server to send my moodle to thw web? Locked	Carla Cruz 17 Aug 2005	Dave Ray 18 Aug 2005	1
fatal error in some servers but not all Locked	Carlito Tan 25 May 2004	Rob MN 9 Jul 2005	4
CRITICAL PROBLEM WITH MOODLE HOSTING!!!! Locked	Carlos Morales Socorro 30 Nov 2007	Steve Hyndman 4 Feb 2008	29
in replicated server instalation Locked	Carlos Alvarez Fullgraff 28 Feb 2020	Visvanath Ratnaweera 28 Feb 2020	4
What do you think about this architecture for 100.000 students? Locked	Carlos Eduardo Angarita Marquez 1 Oct 2008	Michael Penney 21 Oct 2008	4
php-fpm config for max_children Locked	Carly Born 7 Feb 2020	Ken Task 7 Feb 2020	1
Bandwidth required in Server to use Moodle collaborate	Carmen Olmedo 19 Jun 2020	Visvanath Ratnaweera 20 Jun 2020	3
Shared host or not to shared host, that is the question Locked	Carol Ann 19 Feb 2018	Usman Asar 27 Feb 2018	10
Rendering Content Take Long Time	Carolus Joseph 30 Mar 2020	Carolus Joseph 30 Mar 2020	0
Logging User Interactions Slowing Moodle? Locked	Carolyn Hodgman 17 Oct 2014	Howard Miller 18 Oct 2014	1
OPCache size and process locking	Carsten Schöffel 1 Apr 2020	Ricardo Caiado 28 Jun 2020	3
How to prime Opcache / Fill Opcache with all Moodle php files	Carsten Schöffel 9 Apr 2020	Thorsten Bartel 3 Nov 2020	13
Could Moodle support a shared nothing architecture? Locked	Cathal O'Riordan 22 Feb 2012	Cathal O'Riordan 23 Feb 2012	2
performance testing with apache benchmark and logins Locked	Cathal O'Riordan 22 Feb 2012	Alex DePena 25 Feb 2012	4
Proposed architecture for Moodle 2.x Locked	Cathal O'Riordan 1 Mar 2012	Andrew Nicols 27 Jun 2012	16
Moodle under-performance Locked	Cathal O'Riordan 19 Jun 2012	Visvanath Ratnaweera 8 Jul 2012	5
CloudFlare setup with Moodle Locked	Cathal O'Riordan 7 Aug 2015	curt bixel 7 Oct 2015	19
Cloudflare configuration on Moodle.org Locked	Cathal O'Riordan 19 Nov 2015	Matt Spurrier 24 Nov 2015	8
To virtualize or not? Locked	catherine walker 16 Sep 2010	Visvanath Ratnaweera 16 Sep 2010	1

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