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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DiscussionStarted byRepliesLast post
High CPU load during quizzes Picture of Henry WoolardHenry Woolard 1 Chris Kenniburg
Sat, 23 Sep 2017, 3:20 AM
Moodle slow when logging in and navigating to home. Picture of Theunis VictorTheunis Victor 5 Ken Task
Fri, 22 Sep 2017, 3:02 AM
Load Testing tool suggestions please Picture of Jerry LauJerry Lau 1 Howard Miller
Wed, 20 Sep 2017, 4:33 PM
Moodle on AWS load balancing Architecture Picture of Steve PollockSteve Pollock 13 Eduard TC
Mon, 18 Sep 2017, 8:54 PM
Very slow login time Picture of Christian KristiansenChristian Kristiansen 18 Flemming Bornemann
Fri, 15 Sep 2017, 5:26 PM
Using AWS for Moodle Picture of Edilberto Solis, Jr.Edilberto Solis, Jr. 4 Eduard TC
Tue, 12 Sep 2017, 7:44 PM
150 concurrent users to do test Picture of Peter StapferPeter Stapfer 5 Howard Miller
Sat, 9 Sep 2017, 6:06 PM
New Moodle 3.3 service super slow Picture of Jason MenardJason Menard 10 Jerry Lau
Fri, 8 Sep 2017, 12:18 AM
Installing moodle app server with separate db server Picture of Arnel Jr. RubianoArnel Jr. Rubiano 4 Arnel Jr. Rubiano
Tue, 5 Sep 2017, 8:46 AM
Large Scale Moodle server and apps for technical practicals Picture of Melchoir PhilipMelchoir Philip 2 Melchoir Philip
Mon, 4 Sep 2017, 7:41 PM
moodle mysql master-master replication Picture of jhon grennjhon grenn 2 jhon grenn
Mon, 4 Sep 2017, 4:58 PM
Redis session caching locks? Picture of Vaesar RodriguezVaesar Rodriguez 1 Howard Miller
Wed, 30 Aug 2017, 5:07 PM
Server for 1500 users Picture of Lorenzzo MollinarLorenzzo Mollinar 1 Howard Miller
Tue, 29 Aug 2017, 4:07 PM
Hardware for 3000 users please advise Picture of Stephen BorisStephen Boris 1 Howard Miller
Thu, 24 Aug 2017, 6:21 PM
Moodle file picker not working Picture of Taj DesTaj Des 17 Ken Task
Sun, 20 Aug 2017, 2:14 AM
Jmeter Regular Expression Extractor for "sesskey" Picture of Arabinda PArabinda P 4 Sandeep Kommineni
Thu, 17 Aug 2017, 5:26 PM
How to interpret MySQL-Tuner Perl results? Picture of Tim KampsTim Kamps 6 Howard Miller
Wed, 16 Aug 2017, 5:41 PM
Hosting for small moodle? Picture of Dan ToseDan Tose 1 Helen Foster
Wed, 16 Aug 2017, 4:58 PM
SSD as Cache vs Stand Alone Picture of Stephen BorisStephen Boris 2 Stephen Boris
Sat, 12 Aug 2017, 4:49 AM
Session Handling Problem Picture of Aditya DubayAditya Dubay 4 Jeff White
Fri, 11 Aug 2017, 9:54 PM
Minimum hardware requirements for 1000+ users. Picture of Arnel Jr. RubianoArnel Jr. Rubiano 4 Arnel Jr. Rubiano
Thu, 10 Aug 2017, 8:37 AM
Moodle using mulitple DB readers and 1 writer? Picture of Christos SavvaChristos Savva 4 Jeff White
Sat, 5 Aug 2017, 4:09 AM
Moodle 3.2 - Memcached Session Handling PHP 7.0.9 Picture of Jeff WhiteJeff White 3 Jeff White
Fri, 4 Aug 2017, 9:58 PM
Moodle caches for application are changing without notice? Picture of Christos SavvaChristos Savva 3 Christos Savva
Fri, 4 Aug 2017, 2:26 PM
Slow Moodle performance net::ERR_INCOMPLETE_CHUNKED_ENCODING Event Monitor Picture of Joël SchmidJoël Schmid 3 Joël Schmid
Thu, 3 Aug 2017, 5:46 PM
Setup Moodle with DynamoDB Picture of Liam MLiam M 3 Michael Penney
Sun, 30 Jul 2017, 3:48 AM
Moodle Performance Issues (Load Balancer / Cluster) (Willing to Pay for Help) Picture of Amber LynnAmber Lynn 15 Christos Savva
Sat, 29 Jul 2017, 5:06 AM
Moodle Cache Changes Picture of Callum LaverickCallum Laverick 18 Callum Laverick
Fri, 28 Jul 2017, 3:37 PM
Deploying Moodle 3.3 on an IIS cluster. Picture of Joseph CapeJoseph Cape 4 Joseph Cape
Tue, 25 Jul 2017, 7:12 PM
JMeter trouble Picture of Bernat MartinezBernat Martinez 2 Bernat Martinez
Fri, 21 Jul 2017, 12:06 AM
cannot purge standard log in Moodle 3.1 although set keep standard log only for 5 days Picture of William ChanWilliam Chan 2 Jeff White
Thu, 20 Jul 2017, 10:21 PM
MySQL server has gone away when trying to delete course Picture of Mateusz SzuterMateusz Szuter 7 Mateusz Szuter
Tue, 18 Jul 2017, 2:40 PM
System Hangs a lot after installing Moodle Picture of Grzegorz SzorcGrzegorz Szorc 4 Stefan Adam
Tue, 18 Jul 2017, 5:08 AM
Is Moodle using the MySQL sys schema? Picture of Sergey KinashSergey Kinash 2 Sergey Kinash
Mon, 17 Jul 2017, 4:22 AM
Getting Inconsistent data from multi-node memcached cluster AWS Elasticache Picture of priye ranjanpriye ranjan 1 Howard Miller
Sun, 16 Jul 2017, 10:05 PM
Scorm Packages Upload and Duplicate Issue Picture of Muhammad Ammar` IjazMuhammad Ammar` Ijaz 2 Muhammad Ammar` Ijaz
Tue, 11 Jul 2017, 9:17 PM
Hardware in large scal Picture of wahid Anwarwahid Anwar 6 Howard Miller
Tue, 11 Jul 2017, 1:44 PM
CPU overloaded Picture of Bernat MartinezBernat Martinez 7 Muhammad Umer khan
Thu, 6 Jul 2017, 6:00 PM
MySQL Performance for Moodle Picture of Jonathan VJonathan V 10 Tavi Al
Tue, 4 Jul 2017, 10:30 PM
Moodle Running So Slow Picture of christian orvinchristian orvin 3 Howard Miller
Tue, 4 Jul 2017, 2:07 PM
quiz - advise needed Picture of jhon grennjhon grenn 6 jhon grenn
Wed, 28 Jun 2017, 2:54 PM
Is 371ms within an acceptable range for time to download the dashboard on a new installation? Picture of Corey BrettCorey Brett 2 Mathew Gancarz
Tue, 27 Jun 2017, 10:50 PM
Configuring PHP-FPM for performance Picture of Heiko SchachHeiko Schach 5 Corey Brett
Mon, 26 Jun 2017, 7:50 PM
Quiz timer starts before first page loads (Moodle 2.7.19) Picture of Simon ChengSimon Cheng 2 Mary Cooch
Sat, 24 Jun 2017, 6:28 PM
Email problem? System slow to create users or complete tests Picture of Stuart RidoutStuart Ridout 1 Jamie Kramer
Wed, 21 Jun 2017, 9:46 PM
Clustered file system for Moodledata Picture of Jeff WhiteJeff White 0 Jeff White
Wed, 21 Jun 2017, 2:31 AM
[Moodle BenchMark] Need Beta-tester Picture of Mickaël PANNEQUINMickaël PANNEQUIN 56 James Steerpike
Mon, 19 Jun 2017, 12:58 AM
how do you handle long tasks ? Picture of Julien BoulenJulien Boulen 7 Tim Hunt
Fri, 16 Jun 2017, 4:05 AM
Caching the moodledata directory Picture of Roland ChapinRoland Chapin 3 Jeff White
Fri, 16 Jun 2017, 1:48 AM
How does using the Mobile App affect server performance? Picture of James SteerpikeJames Steerpike 1 Howard Miller
Thu, 15 Jun 2017, 5:35 AM
Moodle Installation in Rural Area Picture of Dave JacksonDave Jackson 3 James Steerpike
Mon, 12 Jun 2017, 4:32 PM
Could not handle 60 requests at a time for online quiz Picture of Santhosh ChandraSanthosh Chandra 2 Usman Asar
Sun, 11 Jun 2017, 2:07 AM
Server Hardware Requirement for 300 User AdyAditya Gautam 14 James Steerpike
Sat, 10 Jun 2017, 12:36 PM
Postgresql performance slow Picture of David VishloffDavid Vishloff 0 David Vishloff
Sat, 10 Jun 2017, 4:05 AM
I AM TERRIFIED : MOODLE IS VERY SLOW ! Picture of fleu risseurfleu risseur 33 Marcel Matschke
Thu, 1 Jun 2017, 5:38 AM
Performance stuck in 250 Concurrent request / second Picture of Pupil SenproPupil Senpro 7 Abbie Abbey
Tue, 30 May 2017, 2:16 PM
Errors in apache2 log - is this normal? Picture of Conor BradleyConor Bradley 2 Conor Bradley
Thu, 25 May 2017, 10:05 PM
bar code login Picture of Mahir M HameedMahir M Hameed 2 AL Rachels
Wed, 17 May 2017, 10:29 PM
All admin features causing 504 timeouts Picture of r jr j 1 r j
Wed, 10 May 2017, 10:11 PM
Dev server performance tips (Windows) Picture of Ole Frank JensenOle Frank Jensen 7 Ole Frank Jensen
Wed, 10 May 2017, 3:17 PM
Moodle session driver always write to mdl_sessions despite your setting (Memcached, File) no meAlfie Punnoose 0 Alfie Punnoose
Fri, 5 May 2017, 1:29 PM
MySQL Full Unicode Support - SLOW!! Picture of Howard MillerHoward Miller 16 Howard Miller
Fri, 28 Apr 2017, 8:52 PM
Moodle 3.2.2 on Shared Hosting Picture of Fred ColeFred Cole 8 Rick Jerz
Fri, 28 Apr 2017, 12:07 AM
A moodle setup for 2K simultaneous users taking quiz Picture of Mahir M HameedMahir M Hameed 13 John Papworth
Wed, 26 Apr 2017, 5:38 PM
"Slow" render Times not under 1.2 sek Picture of Marcel MatschkeMarcel Matschke 13 Marcel Matschke
Sat, 22 Apr 2017, 2:52 AM
basic performance tuning Picture of Fabienne NeveuFabienne Neveu 7 Fabienne Neveu
Thu, 20 Apr 2017, 7:59 PM
Failover moodle server Picture of dwi sudibyodwi sudibyo 4 dwi sudibyo
Fri, 14 Apr 2017, 1:16 PM
Courses for 6000 students Picture of Lorenzzo MollinarLorenzzo Mollinar 1 Usman Asar
Tue, 11 Apr 2017, 11:14 PM
Moodle not accessible after purging cache! Picture of Anirudh PhadkeAnirudh Phadke 2 Anirudh Phadke
Tue, 11 Apr 2017, 7:19 PM
Moodle not detecting the hardware devices? Picture of Simon CaseySimon Casey 1 Howard Miller
Sat, 8 Apr 2017, 4:21 PM
Configuring Server for 9000 users Picture of Luca ViggianiLuca Viggiani 3 Howard Miller
Fri, 7 Apr 2017, 6:13 PM
500 Internal Server Errors on saving pages Picture of Conrad MurrayConrad Murray 1 Howard Miller
Thu, 30 Mar 2017, 6:14 PM
Assignment Submission Taking over 5 minutes Picture of Brandon StocksBrandon Stocks 2 Brandon Stocks
Wed, 29 Mar 2017, 1:47 AM
"what hardware do I need for 500 user?" Picture of othman nezzaghyothman nezzaghy 5 Howard Miller
Thu, 23 Mar 2017, 5:22 PM
handling static contents with apache mod_cache_disk Picture of Julien BoulenJulien Boulen 0 Julien Boulen
Mon, 20 Mar 2017, 11:52 PM
Cron task making httpd irresponsive? Picture of Luca BöschLuca Bösch 5 Paul Verrall
Mon, 20 Mar 2017, 5:41 PM
Moodle grader report editing extremely slow Picture of Debbie UnterseherDebbie Unterseher 18 Debbie Unterseher
Tue, 14 Mar 2017, 4:31 AM
Central Moodle instance sync to local instance - updated Picture of Paa KwesiPaa Kwesi 14 Paa Kwesi
Mon, 13 Mar 2017, 7:00 PM
Hardware issues with Moodle Picture of Nduka S OkoyeNduka S Okoye 2 Howard Miller
Sun, 12 Mar 2017, 3:34 AM
Moodle For 10000 concurrency especially for Quiz Picture of Shyam JadalaShyam Jadala 12 Shyam Jadala
Tue, 7 Mar 2017, 7:15 PM
Slow writing speed to Postgres Database Picture of Acs GaborAcs Gabor 2 Acs Gabor
Wed, 1 Mar 2017, 8:07 PM
pluginfile.php performance and session locking Picture of Dominique LALOTDominique LALOT 2 Dominique LALOT
Fri, 24 Feb 2017, 4:44 PM
Extreamly slow self-enrollment Picture of Marjan MiloševićMarjan Milošević 1 Marjan Milošević
Fri, 24 Feb 2017, 5:38 AM
Proposal: Reduce session lock contention with opt-in READ_ONLY_SESSION Picture of Adam EijdenbergAdam Eijdenberg 3 Tim Hunt
Wed, 22 Feb 2017, 6:35 AM
Problem of performance Picture of mimi nommimi nom 4 mimi nom
Tue, 21 Feb 2017, 4:11 PM
Student Profile Data (Default) Not Updating Picture of Troy FennellTroy Fennell 6 Troy Fennell
Sun, 19 Feb 2017, 11:06 AM
Event Monitoring Performance Picture of Michael HughesMichael Hughes 10 dirk meyer
Thu, 16 Feb 2017, 9:28 PM
Can moodle serve huge numbers of users? Picture of Ahmed IbrahimAhmed Ibrahim 9 Dan Marsden
Wed, 15 Feb 2017, 4:44 AM
MongoDB: Invalid Plugin Picture of Douglas RosaDouglas Rosa 2 Douglas Rosa
Thu, 9 Feb 2017, 10:23 PM
Network Latency and AWS Picture of Clarissa SClarissa S 3 Howard Miller
Thu, 9 Feb 2017, 6:21 PM
JSON error when uploading a file Picture of David BatesDavid Bates 5 James McLean
Thu, 2 Feb 2017, 8:17 AM
moodle 3.x and bluehost shared hosting incompatibility? Picture of spyros zoupspyros zoup 16 Dan Rosenthal
Mon, 30 Jan 2017, 9:08 PM
Advice on moodle installation Picture of Mark HamptomMark Hamptom 2 Mathew Gancarz
Thu, 26 Jan 2017, 11:48 PM
Moodle 2.8.6 site running extremely slow Picture of Mark BaldwinMark Baldwin 5 Dan Marsden
Mon, 23 Jan 2017, 7:10 AM
moodle 3.1: 10x slower than 3.0.2 Picture of Martin AlexanderMartin Alexander 10 Juan Gabriel Edu Labs
Sat, 21 Jan 2017, 12:38 AM
mdl_cache_flags slow in LnP Picture of Charu KhamitkarCharu Khamitkar 2 Tomasz Muras
Wed, 18 Jan 2017, 4:13 PM
How to sync local installation of Moodle and installation on a server onine Picture of Paa KwesiPaa Kwesi 4 Paa Kwesi
Tue, 17 Jan 2017, 11:07 PM
quiz for 150 students Picture of ziv izackovziv izackov 9 ziv izackov
Mon, 16 Jan 2017, 11:34 PM
Performance Tuning and Load Testing Picture of Indresh VishwakarmaIndresh Vishwakarma 18 Ricardo Caiado
Fri, 13 Jan 2017, 11:48 PM
Web Server + Database selection/preferences (Apache, MySQL?MariaDB, Nginx, PostgreSQL) Picture of Jerry LauJerry Lau 6 Ricardo Caiado
Fri, 13 Jan 2017, 11:47 PM
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