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
Hosting on site versus Out Sourcing Picture of Paul Langdon Paul Langdon 5 Visvanath Ratnaweera
Sat, May 23, 2015, 3:17 AM
I/O Needs in a Split System Picture of Rick Venuto Rick Venuto 9 Visvanath Ratnaweera
Thu, May 21, 2015, 12:10 AM
10 Mini-PCs With Pre-Installed Linux Picture of Visvanath Ratnaweera Visvanath Ratnaweera 11 Visvanath Ratnaweera
Mon, May 18, 2015, 8:18 PM
Moodle very slow on local Windows high end laptop Picture of Michel DENIS Michel DENIS 8 Michel DENIS
Sun, May 17, 2015, 4:40 PM
Unable to edit quiz after upgrade from 2.7.3+ to 2.8.1+ Picture of Joe Chapman Joe Chapman 37 Melissa Benson
Sat, May 16, 2015, 3:14 AM
Load Testing Picture of Graham Stone Graham Stone 4 Jeff White
Thu, May 14, 2015, 9:08 PM
What are the requirements for setting up a moodle site in a Windows server? Picture of Ezekiel del Mundo Ezekiel del Mundo 6 Usman Asar
Wed, May 13, 2015, 5:17 AM
An update on cache landscape (Linux-based) Picture of Visvanath Ratnaweera Visvanath Ratnaweera 11 Matteo Scaramuccia
Sat, May 9, 2015, 2:54 PM
Which one best moodle hosting server in the world ? Picture of Kathir Rajaraman Kathir Rajaraman 9 Fahad Rafiq
Wed, May 6, 2015, 7:51 PM
Moodle MySQL overload error Picture of Alejandro Calderón Alejandro Calderón 8 Alejandro Calderón
Wed, May 6, 2015, 1:13 AM
Moodle Very slow for users who are not administrators Picture of Cristian Matos Cristian Matos 5 Cristian Matos
Tue, May 5, 2015, 10:43 PM
Is there a solution to moodle's chat heavyness? Picture of Nuno Pinto Nuno Pinto 5 Visvanath Ratnaweera
Tue, May 5, 2015, 2:26 PM
Moodle Delayed Replication Mirror Site Picture of Zach M. Zach M. 7 jason everling
Sat, May 2, 2015, 12:38 AM
Setting Up Memcache with transparent session failover Picture of Jeff White Jeff White 2 Jeff White
Fri, May 1, 2015, 9:57 PM
Share us your help and experience Picture of zizo zizo zizo zizo 2 Usman Asar
Fri, May 1, 2015, 2:49 AM
quiz records error? Picture of Tzafi Z Tzafi Z 1 Howard Miller
Thu, Apr 30, 2015, 6:04 PM
fatal error with memcache.php Picture of Andy Taggart Andy Taggart 1 Howard Miller
Wed, Apr 22, 2015, 4:54 PM
Server Requirement Picture of Mohammad Talat Mohammad Talat 3 Seth Mengal
Tue, Apr 21, 2015, 8:19 PM
NewRelic RPM & Moodle Errors / Issues Picture of Seth Mengal Seth Mengal 1 James McLean
Tue, Apr 21, 2015, 10:04 AM
PHP memory Picture of Rama Gundabhat Rama Gundabhat 12 Ken Task
Sat, Apr 18, 2015, 8:29 AM
Setting memcache as default Picture of Andy Taggart Andy Taggart 7 Andy Taggart
Fri, Apr 17, 2015, 3:35 PM
Moodle system requirements online checking tool for students? Picture of Usman Arshad Usman Arshad 5 kany adrew
Wed, Apr 15, 2015, 11:21 PM
bluehost.com Art Lader Art Lader 49 julia lloyds
Wed, Apr 15, 2015, 8:28 PM
quiz on moodle 2.4 slow Picture of Maram Alsafarini Maram Alsafarini 4 Maram Alsafarini
Tue, Apr 14, 2015, 12:56 PM
Change filedir folder. Picture of Oh ByeongJoo Oh ByeongJoo 0 Oh ByeongJoo
Tue, Apr 14, 2015, 9:52 AM
Cron Job questions Picture of Melissa Benson Melissa Benson 10 Mark Sharp
Mon, Apr 13, 2015, 4:19 PM
Externally hosted database server as backend (Backup) in moodle Picture of Parth Patel Parth Patel 4 Usman Asar
Thu, Apr 9, 2015, 6:04 PM
Munin plugin for Moodle Picture of Ruslan Kabalin Ruslan Kabalin 6 Dennys Patricio Villacrés Jiménez
Thu, Apr 9, 2015, 4:12 AM
I AM TERRIFIED : MOODLE IS VERY SLOW ! Picture of fleu risseur fleu risseur 17 Michael Milette
Tue, Apr 7, 2015, 10:18 PM
Question about using Xcache with Moodle 2.8 BobBl Robert Blomeyer 1 Matteo Scaramuccia
Sat, Apr 4, 2015, 2:05 PM
HOW to build a production site "hyper-fast, simple, non-explosive" Picture of fleu risseur fleu risseur 1 Usman Asar
Fri, Apr 3, 2015, 10:09 PM
Maintaining large Log table Picture of Richard Flurey Richard Flurey 0 Richard Flurey
Thu, Apr 2, 2015, 4:27 PM
Increase in disk space usage in 2.2 to 2.7 upgrade Picture of Walter Horowitz Walter Horowitz 7 Walter Horowitz
Thu, Apr 2, 2015, 12:42 AM
Moodle site became very slow after upgrading to 2.8.5 Picture of Garamkhand Surendelg Garamkhand Surendelg 7 Visvanath Ratnaweera
Tue, Mar 31, 2015, 7:56 PM
Error: MySQL server has gone away Picture of Maknus Kowalski Maknus Kowalski 4 Howard Miller
Mon, Mar 30, 2015, 8:18 PM
Re: Active participants (split from New to Moodle can it do?) Picture of Usman Asar Usman Asar 7 Mary Cooch
Mon, Mar 30, 2015, 2:54 PM
Quiz for moodle 2.2--- documents content no data Picture of Maram Alsafarini Maram Alsafarini 2 Visvanath Ratnaweera
Sun, Mar 29, 2015, 6:08 PM
Repeated flood of requests causes all database connections to be used up? Picture of Mathew Gancarz Mathew Gancarz 6 Howard Miller
Sat, Mar 28, 2015, 6:38 PM
Performance issue on dropbox repository's cron Picture of Jordi Pujol-Ahulló Jordi Pujol-Ahulló 3 Jordi Pujol-Ahulló
Wed, Mar 25, 2015, 8:32 PM
NFS and Memcached configuration (clustering preparation) Picture of heli guy heli guy 4 heli guy
Tue, Mar 24, 2015, 5:48 PM
Memcache issues after recent security patches Picture of sam marshall sam marshall 1 sam marshall
Fri, Mar 20, 2015, 1:43 AM
Cache problem Picture of Wissam Nahas Wissam Nahas 1 Howard Miller
Wed, Mar 18, 2015, 10:40 PM
problem on the mdl_grade_grades_category moodle 2.8, high cpu use in my server of databases. Picture of Eduardo Miranda Eduardo Miranda 0 Eduardo Miranda
Wed, Mar 18, 2015, 12:35 AM
Zip Performance in Moodle Picture of Dale Davies Dale Davies 1 Howard Miller
Tue, Mar 17, 2015, 7:45 PM
Very slow course participation reports Picture of Josef Fortier Josef Fortier 3 Jay Liotta
Tue, Mar 17, 2015, 2:21 AM
Really slow logon Picture of Stuart Hector Stuart Hector 7 Howard Miller
Sun, Mar 15, 2015, 6:08 PM
Moodle application / sql locks Picture of Luis Pinheiro Luis Pinheiro 1 Visvanath Ratnaweera
Fri, Mar 13, 2015, 6:40 AM
Upgrading MySQL 5.1 to 5.5 , configuration setting changes? Picture of Paul L Paul L 9 Przemek Kaszubski
Thu, Mar 12, 2015, 11:18 PM
Moodle Connection Time Out Issue Picture of N B N B 2 Przemek Kaszubski
Thu, Mar 12, 2015, 10:20 PM
The coming of HTTP/2 Picture of Ken Task Ken Task 4 Andrew Nicols
Thu, Mar 12, 2015, 8:56 AM
Assignment Uploads Slow in Moodle 2.7 Picture of IronHorse University IronHorse University 3 heli guy
Wed, Mar 11, 2015, 2:17 PM
Migrating from a linux to a windows server Picture of Eric Miletich Eric Miletich 11 Stuart Hector
Wed, Mar 11, 2015, 7:36 AM
Surface Pro 3 touch pad, not able to move activities Picture of Annette Knobloch Annette Knobloch 2 Andrew Nicols
Mon, Mar 9, 2015, 7:55 AM
File or Database Sessions? Picture of Marcus Green Marcus Green 6 Mark Picker
Wed, Mar 4, 2015, 1:44 PM
Memcached Moodle site still DB row locking Picture of jerrett fowler jerrett fowler 6 jerrett fowler
Tue, Mar 3, 2015, 9:03 PM
Event Monitoring Performance Picture of Michael Hughes Michael Hughes 2 Michael Hughes
Mon, Mar 2, 2015, 9:45 PM
Moodle based on Postgres-XC Picture of David Paniagua Ruano David Paniagua Ruano 0 David Paniagua Ruano
Mon, Mar 2, 2015, 5:32 PM
Hosted webspace on 1&1 germany doesn't support all moodle features Picture of Ralf Hilgenstock Ralf Hilgenstock 6 Howard Miller
Sun, Mar 1, 2015, 6:52 PM
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
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 Me, Myself and I 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
Managing the number of tables in SQL databases Gustavo at Lake Ontario Gustavo Monteiro 2 Gustavo Monteiro
Thu, Jan 29, 2015, 12:51 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
Weird message in php error log file My picture Mari Cruz García 4 Mari Cruz García
Fri, Dec 5, 2014, 12:24 AM
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
Moodle 2.2 connection-specific(??) hangs? Picture of Brad Smith Brad Smith 5 Howard Miller
Wed, Nov 19, 2014, 6:06 PM
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