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 Performance documentation. The complete documentation is at MoodleDocs.

Many of the questions have already been answered. Please make use of the 'Using Moodle' advanced search facility and the Google custom search to find them.

If your questions still remain unanswered, post them here. Please include as much background information as possible about your hardware, the operating system, the web server, the database server, the PHP scripting framework, etc. If your machine is virtualized, also mention the host hardware, the operating system, the virtualization technology used and the resources assigned to the virtual machine. If you use a hosting service, mention either the hosting provider and the package or the resources as advertised.

For general advice on how to ask questions, refer Moodle.org forums help. Also please observe our Moodle.org forums Code of Conduct.

Best wishes,
your moderator Howard.


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DiscussionStarted byRepliesLast post
Hosted webspace on 1&1 germany doesn't support all moodle features Picture of Ralf Hilgenstock Ralf Hilgenstock 5 Otmar Bender
Sat, Feb 28, 2015, 11:35 PM
Memcached Moodle site still DB row locking Picture of jerrett fowler jerrett fowler 2 Matteo Scaramuccia
Sat, Feb 28, 2015, 2:53 AM
installation moodle Picture of joss micheal joss micheal 7 joss micheal
Fri, Feb 27, 2015, 7:30 PM
course-completion-report Picture of Rolf Petersen Rolf Petersen 4 jason white
Fri, Feb 27, 2015, 4:50 PM
How to simulate user do quiz multi choice use Jmeter ! Picture of Tran The A n Tran The A n 9 Faisal Jamil
Wed, Feb 25, 2015, 3:03 PM
jMeter and Quizzes Picture of Jason Cameron Jason Cameron 4 Faisal Jamil
Mon, Feb 23, 2015, 6:54 PM
Event Monitoring Performance Picture of Michael Hughes Michael Hughes 1 ben reynolds
Thu, Feb 19, 2015, 12:59 AM
Synchronize user pictures Picture of Luke Baker Luke Baker 3 Jon Witts
Wed, Feb 11, 2015, 5:35 AM
pluginfile.php performance problem Picture of Phil Loaiza Phil Loaiza 20 Troels Bugge
Tue, Feb 10, 2015, 4:43 PM
Needs Assesment Picture of Eric Guedegbe Eric Guedegbe 3 Mary Cooch
Tue, Feb 10, 2015, 5:21 AM
Moodle course page slow only with Firefox Picture of Hittesh Ahuja Hittesh Ahuja 12 Hittesh Ahuja
Mon, Feb 9, 2015, 8:12 PM
Slow response using Chrome when compared to IE - 2.8.3 (Build: 20150202) Picture of Stephen Bloomer Stephen Bloomer 5 Stephen Bloomer
Sat, Feb 7, 2015, 10:18 AM
MOODLE 2.7 on Yosemite w/ Firefox Picture of Frank Keating Frank Keating 3 Nicola Taylor
Sat, Feb 7, 2015, 2:23 AM
Sporadic email delivery times Picture of Nathan Bruley Nathan Bruley 2 Nathan Bruley
Fri, Feb 6, 2015, 10:00 PM
Newbie ? - Short video clip storage Picture of Tim Edsell Tim Edsell 0 Tim Edsell
Fri, Feb 6, 2015, 12:15 AM
MOODLE 2.7 RUNNING VERY VERY SLOW Picture of john whetton john whetton 9 Rick Jerz
Wed, Feb 4, 2015, 8:42 AM
Moodle 2.7 is very slow Picture of system vim system vim 1 Visvanath Ratnaweera
Tue, Feb 3, 2015, 6:10 PM
Capture Cards on Moodle Picture of Lawrence Mallari Lawrence Mallari 1 ryan sanders
Thu, Jan 29, 2015, 5:25 PM
File or Database Sessions? Picture of Marcus Green Marcus Green 5 Jeff White
Thu, Jan 29, 2015, 5:23 AM
Setting Up Memcache with transparent session failover Picture of Jeff White Jeff White 0 Jeff White
Thu, Jan 29, 2015, 5:16 AM
Managing the number of tables in SQL databases Gustavo at Lake Ontario Gustavo Monteiro 2 Gustavo Monteiro
Thu, Jan 29, 2015, 12:51 AM
Unable to edit quiz after upgrade from 2.7.3+ to 2.8.1+ Picture of Joe Chapman Joe Chapman 21 Melissa Benson
Sat, Jan 24, 2015, 12:39 AM
How many concurrent users should my hardware support? Picture of Hassan AbdelSabour Hassan AbdelSabour 10 Hassan AbdelSabour
Thu, Jan 22, 2015, 4:58 AM
hardware requirements for 500 concurrent users Picture of abdelrhman Al-tawdy abdelrhman Al-tawdy 2 Visvanath Ratnaweera
Wed, Jan 21, 2015, 6:32 PM
Saving quiz caching takes a long time and crashes Picture of Michael Ko Michael Ko 12 Michael Ko
Wed, Jan 21, 2015, 10:00 AM
Slow cronjobs in 2.7 vs 2.6 Picture of Ellio Mourinho Ellio Mourinho 0 Ellio Mourinho
Wed, Jan 21, 2015, 4:33 AM
Are memcached cache tests always slower than file cache Picture of Joe Snuffy Joe Snuffy 8 Jeff White
Tue, Jan 20, 2015, 3:25 AM
Special Characters strange behavior after update to 2.8.1 Picture of Rolf Petersen Rolf Petersen 1 Greg Rodenhiser
Thu, Jan 15, 2015, 2:32 AM
Hardware Requirement for 65 Con Current Users Picture of Martin Fernandes Martin Fernandes 2 Visvanath Ratnaweera
Wed, Jan 14, 2015, 5:26 PM
Working and load very slow my site Picture of gourav gourav gourav gourav 1 Howard Miller
Wed, Jan 14, 2015, 4:31 PM
Dealing with "login storm" me at a FIRST robotics competition Colin Matheson 3 ryan sanders
Thu, Jan 8, 2015, 7:55 AM
Performence problem in 2.4 Picture of Sigal Rashba Sigal Rashba 1 Howard Miller
Mon, Jan 5, 2015, 7:40 PM
2.6.6 custom search Improvement Picture of Josepe PP Josepe PP 2 Josepe PP
Wed, Dec 31, 2014, 6:05 PM
cron job on a hosted site Picture of Alex Delaforce Alex Delaforce 6 Alex Delaforce
Wed, Dec 31, 2014, 4:50 AM
One web server, multiple Moodle setups Picture of George Young George Young 13 Visvanath Ratnaweera
Wed, Dec 24, 2014, 8:10 PM
2.8.1 production server Picture of Josepe PP Josepe PP 4 Josepe PP
Sat, Dec 20, 2014, 10:07 PM
Cron job - 2 web servers - different schedule Picture of Job Cespedes Job Cespedes 1 Andrew Nicols
Wed, Dec 17, 2014, 8:13 AM
Can't seem to get sessions saved in memcached Picture of Matej Zerovnik Matej Zerovnik 4 Matej Zerovnik
Wed, Dec 10, 2014, 2:44 PM
longest Latency Picture of Paul Wakelam Paul Wakelam 0 Paul Wakelam
Sun, Dec 7, 2014, 8:02 PM
Very slow course participation reports Picture of Josef Fortier Josef Fortier 2 James McLean
Fri, Dec 5, 2014, 8:33 AM
Weird message in php error log file My picture Mari Cruz García 4 Mari Cruz García
Fri, Dec 5, 2014, 12:24 AM
Migrating from a linux to a windows server Picture of Eric Miletich Eric Miletich 7 Betim Gashi
Thu, Dec 4, 2014, 4:28 PM
Certain actions very slow regardless of load Picture of Henry Foster Henry Foster 5 Henry Foster
Wed, Dec 3, 2014, 10:25 AM
Moodle 2.7.3 (when using file picker) unbelievably slow - any help welcome Picture of Dom London Dom London 8 Sam Stevens
Mon, Dec 1, 2014, 10:31 PM
Moodle Hosting in India Ashutosh @ Leith Hill- England Ashutosh Taunk 14 Ravindra Narula
Mon, Dec 1, 2014, 7:23 PM
Reduce bandwidth by 80-85%!!! Picture of Dakota Duff Dakota Duff 10 Howard Miller
Mon, Dec 1, 2014, 7:11 PM
add a link in administration with php code Picture of abbaspour abbaspour abbaspour abbaspour 0 abbaspour abbaspour
Sun, Nov 30, 2014, 4:22 PM
Heavy IO problem Picture of Ryan-Neal Mes Ryan-Neal Mes 8 Ryan-Neal Mes
Thu, Nov 27, 2014, 4:29 PM
Any Moodle VPS suggestions? ($100/month price range) Medium Usage Picture of Joseph Miles Joseph Miles 9 Rolf Petersen
Thu, Nov 27, 2014, 4:18 PM
switch would automatically disconnected from the network as accessing these switching equipment Picture of bill berts bill berts 0 bill berts
Thu, Nov 20, 2014, 10:26 AM
Moodle 2.2 connection-specific(??) hangs? Picture of Brad Smith Brad Smith 5 Howard Miller
Wed, Nov 19, 2014, 6:06 PM
Will upgrading php and mysql Damage Moodle 2.5? Picture of Miki Alliel Miki Alliel 2 Miki Alliel
Tue, Nov 18, 2014, 5:49 PM
Moodle and Cache-Control directive sometimes make reverse proxies work hard Picture of Matteo Scaramuccia Matteo Scaramuccia 4 Matteo Scaramuccia
Sun, Nov 16, 2014, 5:23 PM
What to do about memcached cache reset Dan at desk in Moodle HQ, Perth Dan Poltawski 3 Matthew Spurrier
Fri, Nov 14, 2014, 5:47 PM
Setup a MySQL cluster for Moodle Picture of CP Lau CP Lau 17 Jonas Asa.
Wed, Nov 12, 2014, 5:32 PM
Shared Hosting decision Picture of Francisco Lemus Francisco Lemus 12 john Simpson
Mon, Nov 10, 2014, 11:03 PM
Problem with email messages in 2.7 Picture of Gary Lebowitz Gary Lebowitz 2 Gary Lebowitz
Sat, Nov 8, 2014, 3:39 AM
100 active users limit with 4vCPU Picture of Matej Zerovnik Matej Zerovnik 17 Matej Zerovnik
Fri, Nov 7, 2014, 4:09 PM
2.3 Moodle chat is slow regardless of users Picture of Nuno Pinto Nuno Pinto 2 Nuno Pinto
Wed, Nov 5, 2014, 5:23 PM
Upgrading MySQL 5.1 to 5.5 , configuration setting changes? Picture of Paul L Paul L 8 Howard Miller
Tue, Nov 4, 2014, 10:36 PM
Site is very slow Picture of Fred Frazelle Fred Frazelle 1 Fred Frazelle
Fri, Oct 31, 2014, 7:17 AM
Error on Moodle Yovaromo Luis Yovany Romo Portilla 1 Luis Yovany Romo Portilla
Tue, Oct 28, 2014, 10:09 PM
20 Concurrent users - 4GB SLOW Nostromo hernani moodle 12 Luis de Vasconcelos
Tue, Oct 28, 2014, 3:37 AM
Table Locking? Picture of Andy Byers Andy Byers 9 Luis de Vasconcelos
Fri, Oct 24, 2014, 4:14 AM
mdl_logstore_standard_log 35 million rows Picture of Danny Wahl Danny Wahl 6 sam marshall
Thu, Oct 23, 2014, 1:00 AM
Moodle on Synology Diskstation Picture of Jonathon Hike Jonathon Hike 8 Visvanath Ratnaweera
Wed, Oct 22, 2014, 1:03 PM
Logging User Interactions Slowing Moodle? Picture of Carolyn Hodgman Carolyn Hodgman 1 Howard Miller
Sat, Oct 18, 2014, 6:45 PM
more than Max Number of concurrent users Picture of Colin Peters Colin Peters 26 Howard Miller
Fri, Oct 17, 2014, 6:16 PM
Server crashes at +20 concurrent users Picture of Fabulous Phil Fabulous Phil 6 Howard Miller
Thu, Oct 16, 2014, 9:02 PM
Slow page loads Picture of john allen john allen 6 john allen
Tue, Oct 14, 2014, 4:10 PM
My IP blocks when adding scorm package Picture of amir ghasemiyan amir ghasemiyan 4 amir ghasemiyan
Tue, Oct 14, 2014, 12:20 PM
5 seconds for output. Slowly load Picture of Alessandro Baccanelli Alessandro Baccanelli 9 Visvanath Ratnaweera
Mon, Oct 13, 2014, 5:44 PM
Moodle 2.7 performance and styles_debug.php Picture of Alan Kmiecik Alan Kmiecik 3 Ken Task
Wed, Oct 8, 2014, 9:08 PM
Proposal to turn on quiz auto-save by default Tim at Lone Pine Koala Sanctuary Tim Hunt 0 Tim Hunt
Tue, Oct 7, 2014, 6:23 AM
How many clients can access to my site in one time? Picture of Uugankhuu Baasanjav Uugankhuu Baasanjav 7 Uugankhuu Baasanjav
Mon, Oct 6, 2014, 9:11 AM
hardware required for 500 concurrent users in aws Picture of Trilok Veeranki Trilok Veeranki 0 Trilok Veeranki
Thu, Oct 2, 2014, 2:18 PM
Coral CDN for distributing the loading of video files? Picture of Jean Jones Grey Jean Jones Grey 5 Usman Asar
Thu, Oct 2, 2014, 4:58 AM
Moodle Multi-tenancy or hosting multiple Moodle sites My picture Mari Cruz García 19 Mark Chaney
Tue, Sep 30, 2014, 3:38 PM
URL site redirection Picture of Genner Cerna Genner Cerna 9 Thamarai Thamarai
Tue, Sep 30, 2014, 2:02 PM
Can Moodle run as distributed? Picture of Jean Jones Grey Jean Jones Grey 1 Dan Marsden
Tue, Sep 30, 2014, 9:03 AM
Mem Cache Picture of john allen john allen 3 Mari Cruz García
Mon, Sep 29, 2014, 11:16 PM
mod_fcgid: error reading data from FastCGI server Picture of Filippo Carnevali Filippo Carnevali 0 Filippo Carnevali
Fri, Sep 26, 2014, 6:45 PM
Linux box (discussion split from The problem with Canvas) Picture of Visvanath Ratnaweera Visvanath Ratnaweera 9 Visvanath Ratnaweera
Fri, Sep 26, 2014, 1:16 AM
If anyone else having performance problems with Locally assigned roles Tim at Lone Pine Koala Sanctuary Tim Hunt 0 Tim Hunt
Thu, Sep 25, 2014, 11:29 PM
Is Opcache enough the improve performance of a Moodle 2.6 site? My picture Mari Cruz García 0 Mari Cruz García
Thu, Sep 25, 2014, 10:28 PM
Hardware estimate for 10000+ users Picture of Venkatarathna T V Venkatarathna T V 4 Stuart Cook
Thu, Sep 25, 2014, 2:29 PM
Session handling: db vs moodledata clarification needed Picture of Matthew Goral Matthew Goral 10 Dharmendra Pundir
Thu, Sep 25, 2014, 2:04 PM
Performance issue Picture of Jacqui C Jacqui C 1 Visvanath Ratnaweera
Wed, Sep 24, 2014, 6:24 PM
Moodle consuming all server's CPU - Unusually large mdl_questions table Picture of Ivan Olivero Ivan Olivero 5 Phil Loaiza
Wed, Sep 24, 2014, 3:08 AM
Quiz Question Format Doc and Kayla Michael "doc" Crawford 1 Tim Hunt
Tue, Sep 23, 2014, 8:41 PM
memcache slow? Picture of Rikard E Rikard E 7 Daniel Tran
Tue, Sep 23, 2014, 5:39 AM
Performance issues with course overview + memcached Picture of Ellio Mourinho Ellio Mourinho 8 Dan Marsden
Mon, Sep 22, 2014, 6:04 PM
Problem with Google SSO Picture of amarnath Kamepalli amarnath Kamepalli 0 amarnath Kamepalli
Thu, Sep 18, 2014, 11:19 PM
Assignment Uploads Slow in Moodle 2.7 Picture of IronHorse University IronHorse University 1 IronHorse University
Thu, Sep 18, 2014, 8:55 AM
Slow moodle (2.5.2) hosting ourselves on WIndows Picture of john allen john allen 2 Howard Miller
Wed, Sep 17, 2014, 6:40 PM
Moodle Universal Cache, filesystem available space, designer mode Picture of Peter Kehl Peter Kehl 1 Matteo Scaramuccia
Wed, Sep 17, 2014, 2:07 PM
Moodle Universal Cache, tmpfs, theme designer mode Picture of Peter Kehl Peter Kehl 1 Howard Miller
Tue, Sep 16, 2014, 4:40 PM
ERROR!!! The code you are using is OLDER after change database Picture of reza budi ryanzah reza budi ryanzah 1 Howard Miller
Tue, Sep 16, 2014, 4:37 PM
Changing session.save_path Picture of m M m M 2 Peter Kehl
Tue, Sep 16, 2014, 6:38 AM
Settings for Moodle Drag and Drop Picture of Mark Chaney Mark Chaney 3 Mark Chaney
Mon, Sep 15, 2014, 9:33 PM
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