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.

Showing 100 of 2642 discussions
  Discussion Started by Replies Last post Created  
Moodle system requirements online checking tool for students?
Picture of Usman Arshad Usman Arshad
5 Wed, Apr 8, 2015, 7:08 PM
quiz on moodle 2.4 slow
Picture of Maram Alsafarini Maram Alsafarini
4 Tue, Apr 14, 2015, 2:25 AM
Change filedir folder.
Picture of Oh ByeongJoo Oh ByeongJoo
0 Tue, Apr 14, 2015, 9:52 AM
Externally hosted database server as backend (Backup) in moodle
Picture of Parth Patel Parth Patel
4 Mon, Apr 6, 2015, 11:37 PM
Question about using Xcache with Moodle 2.8
Picture of Robert Blomeyer Robert Blomeyer
1 Sat, Apr 4, 2015, 12:15 AM
HOW to build a production site "hyper-fast, simple, non-explosive"
Picture of fleu risseur fleu risseur
1 Fri, Apr 3, 2015, 7:08 PM
Increase in disk space usage in 2.2 to 2.7 upgrade
Picture of Walter Horowitz Walter Horowitz
7 Thu, Aug 28, 2014, 8:41 AM
Error: MySQL server has gone away
Picture of Maknus Kowalski Maknus Kowalski
4 Mon, Mar 30, 2015, 3:19 PM
Re: Active participants (split from New to Moodle can it do?)
Picture of Usman Asar Usman Asar
7 Sat, Mar 28, 2015, 4:40 AM
Quiz for moodle 2.2--- documents content no data
Picture of Maram Alsafarini Maram Alsafarini
2 Sun, Mar 29, 2015, 1:46 PM
Repeated flood of requests causes all database connections to be used up?
Picture of Mathew Gancarz Mathew Gancarz
6 Fri, Mar 27, 2015, 11:49 PM
Performance issue on dropbox repository's cron
Picture of Jordi Pujol-Ahulló Jordi Pujol-Ahulló
3 Fri, Mar 20, 2015, 8:37 PM
NFS and Memcached configuration (clustering preparation)
Picture of heli g heli g
4 Sat, Mar 21, 2015, 7:19 PM
Memcache issues after recent security patches
Picture of sam marshall sam marshall
1 Thu, Mar 19, 2015, 10:03 PM
Cache problem
Picture of Wissam Nahas Wissam Nahas
1 Wed, Mar 18, 2015, 5:44 AM
Zip Performance in Moodle
Picture of Dale Davies Dale Davies
1 Mon, Mar 16, 2015, 11:44 PM
Very slow course participation reports
Picture of Josef Fortier Josef Fortier
3 Fri, Dec 5, 2014, 6:32 AM
Really slow logon
Picture of Stuart Hector Stuart Hector
7 Wed, Mar 11, 2015, 7:38 AM
Moodle application / sql locks
Picture of Luis Pinheiro Luis Pinheiro
1 Fri, Mar 13, 2015, 1:37 AM
Upgrading MySQL 5.1 to 5.5 , configuration setting changes?
Picture of Paul L Paul L
9 Fri, Oct 31, 2014, 3:25 AM
Assignment Uploads Slow in Moodle 2.7
Picture of IronHorse University IronHorse University
3 Wed, Sep 17, 2014, 2:44 AM
Migrating from a linux to a windows server
Picture of Eric Miletich Eric Miletich
11 Tue, Dec 2, 2014, 9:57 PM
Surface Pro 3 touch pad, not able to move activities
Picture of Annette Knobloch Annette Knobloch
2 Sun, Mar 8, 2015, 11:56 PM
File or Database Sessions?
Picture of Marcus Green Marcus Green
6 Fri, Jul 25, 2014, 5:34 PM
Memcached Moodle site still DB row locking
Picture of jerrett fowler jerrett fowler
6 Fri, Feb 27, 2015, 6:47 PM
Moodle based on Postgres-XC
Picture of David Paniagua Ruano David Paniagua Ruano
0 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 Thu, Feb 19, 2004, 4:57 PM
installation moodle
Picture of joss micheal joss micheal
7 Thu, Feb 26, 2015, 3:08 PM
course-completion-report
Picture of Rolf Petersen Rolf Petersen
4 Fri, Sep 19, 2014, 11:15 PM
Synchronize user pictures
Picture of Luke Baker Luke Baker
3 Thu, Oct 9, 2014, 4:38 PM
pluginfile.php performance problem
Picture of Phil Loaiza Phil Loaiza
20 Thu, Sep 11, 2014, 3:32 AM
Needs Assesment
Picture of Eric Guedegbe Eric Guedegbe
3 Mon, Feb 9, 2015, 9:02 PM
Moodle course page slow only with Firefox
Picture of Hittesh Ahuja Hittesh Ahuja
12 Wed, Nov 19, 2014, 9:33 PM
Slow response using Chrome when compared to IE - 2.8.3 (Build: 20150202)
Picture of Stephen Bloomer Stephen Bloomer
5 Fri, Feb 6, 2015, 8:19 AM
MOODLE 2.7 on Yosemite w/ Firefox
Picture of Frank Keating Frank Keating
3 Tue, Feb 3, 2015, 5:04 AM
Sporadic email delivery times
Picture of Nathan Bruley Nathan Bruley
2 Thu, Feb 5, 2015, 11:56 PM
Newbie ? - Short video clip storage
Picture of Tim Edsell Tim Edsell
0 Fri, Feb 6, 2015, 12:15 AM
MOODLE 2.7 RUNNING VERY VERY SLOW
Picture of john whetton john whetton
9 Fri, Nov 14, 2014, 8:19 PM
Moodle 2.7 is very slow
Picture of system vim system vim
1 Tue, Feb 3, 2015, 5:53 PM
Capture Cards on Moodle
Picture of Lawrence Mallari Lawrence Mallari
1 Thu, Jan 29, 2015, 1:47 PM
Managing the number of tables in SQL databases
Picture of Gustavo Monteiro Gustavo Monteiro
2 Wed, Jan 28, 2015, 8:45 AM
How many concurrent users should my hardware support?
Picture of Hassan AbdelSabour Hassan AbdelSabour
10 Mon, Jan 5, 2015, 5:46 AM
hardware requirements for 500 concurrent users
Picture of abdelrhman Al-tawdy abdelrhman Al-tawdy
2 Wed, Jan 21, 2015, 4:34 PM
Saving quiz caching takes a long time and crashes
Picture of Michael Ko Michael Ko
12 Wed, Dec 17, 2014, 2:22 PM
Slow cronjobs in 2.7 vs 2.6
Picture of Ellio Mourinho Ellio Mourinho
0 Wed, Jan 21, 2015, 4:33 AM
Are memcached cache tests always slower than file cache
Picture of Joe Snuffy Joe Snuffy
8 Wed, Jan 14, 2015, 8:46 AM
Special Characters strange behavior after update to 2.8.1
Picture of Rolf Petersen Rolf Petersen
1 Wed, Nov 26, 2014, 4:35 PM
Hardware Requirement for 65 Con Current Users
Picture of Martin Fernandes Martin Fernandes
2 Wed, Jan 14, 2015, 1:07 PM
Working and load very slow my site
Picture of gourav gourav gourav gourav
1 Wed, Jan 14, 2015, 3:43 PM
Dealing with "login storm"
Picture of Colin Matheson Colin Matheson
3 Thu, Dec 18, 2014, 1:09 AM
Performence problem in 2.4
Picture of Sigal Rashba Sigal Rashba
1 Sun, Jan 4, 2015, 10:47 PM
2.6.6 custom search Improvement
Picture of José Puente Fuentes José Puente Fuentes
2 Sat, Dec 20, 2014, 10:23 PM
cron job on a hosted site
Picture of Alex Delaforce Alex Delaforce
6 Sat, Dec 27, 2014, 10:35 AM
One web server, multiple Moodle setups
Picture of George Young George Young
13 Mon, Jun 6, 2005, 10:42 PM
2.8.1 production server
Picture of José Puente Fuentes José Puente Fuentes
4 Mon, Dec 15, 2014, 9:48 PM
Cron job - 2 web servers - different schedule
Picture of Job Cespedes Job Cespedes
1 Wed, Dec 17, 2014, 5:39 AM
longest Latency
Picture of Paul Wakelam Paul Wakelam
0 Sun, Dec 7, 2014, 8:02 PM
Weird message in php error log file
Picture of Mari Cruz García Mari Cruz García
4 Thu, Nov 27, 2014, 8:41 PM
Certain actions very slow regardless of load
Picture of Henry Foster Henry Foster
5 Wed, Oct 29, 2014, 5:45 PM
Moodle 2.7.3 (when using file picker) unbelievably slow - any help welcome
Picture of Dom London Dom London
8 Mon, Nov 17, 2014, 10:17 PM
Moodle Hosting in India
Picture of Ashutosh Taunk Ashutosh Taunk
14 Wed, Feb 8, 2012, 6:47 AM
Reduce bandwidth by 80-85%!!!
Picture of Dakota Duff Dakota Duff
10 Fri, Jul 11, 2008, 11:31 PM
add a link in administration with php code
Picture of abbaspour abbaspour abbaspour abbaspour
0 Sun, Nov 30, 2014, 4:22 PM
Heavy IO problem
Picture of Ryan-Neal Mes Ryan-Neal Mes
8 Tue, Nov 25, 2014, 11:19 PM
Any Moodle VPS suggestions? ($100/month price range) Medium Usage
Picture of Jim Johnson Jim Johnson
9 Mon, Nov 10, 2014, 11:20 PM
Moodle 2.2 connection-specific(??) hangs?
Picture of Brad Smith Brad Smith
5 Tue, Nov 18, 2014, 4:34 AM
Will upgrading php and mysql Damage Moodle 2.5?
Picture of Miki Alliel Miki Alliel
2 Tue, Nov 18, 2014, 4:53 AM
Moodle and Cache-Control directive sometimes make reverse proxies work hard
Picture of Matteo Scaramuccia Matteo Scaramuccia
4 Fri, Nov 7, 2014, 5:53 AM
What to do about memcached cache reset
Picture of Dan Poltawski Dan Poltawski
3 Wed, Nov 12, 2014, 6:09 PM
Setup a MySQL cluster for Moodle
Picture of CP Lau CP Lau
17 Fri, Oct 26, 2012, 9:35 PM
Shared Hosting decision
Picture of Francisco Lemus Francisco Lemus
12 Wed, Oct 1, 2014, 4:14 AM
Problem with email messages in 2.7
Picture of Gary Lebowitz Gary Lebowitz
2 Sat, Nov 8, 2014, 1:43 AM
2.3 Moodle chat is slow regardless of users
Picture of Nuno Pinto Nuno Pinto
2 Wed, Nov 5, 2014, 1:00 AM
Site is very slow
Picture of Fred Frazelle Fred Frazelle
1 Fri, Oct 31, 2014, 6:58 AM
Error on Moodle
Picture of Luis Yovany Romo Portilla Luis Yovany Romo Portilla
1 Tue, Oct 28, 2014, 10:06 PM
20 Concurrent users - 4GB SLOW
Picture of hernani moodle hernani moodle
12 Fri, Oct 10, 2014, 5:33 PM
Table Locking?
Picture of Andy Byers Andy Byers
9 Fri, Jul 5, 2013, 11:51 PM
mdl_logstore_standard_log 35 million rows
Picture of Danny Wahl Danny Wahl
6 Mon, Oct 20, 2014, 11:53 AM
Moodle on Synology Diskstation
Picture of Jonathon Hike Jonathon Hike
8 Sat, Oct 18, 2014, 12:14 AM
Logging User Interactions Slowing Moodle?
Picture of Carolyn Hodgman Carolyn Hodgman
1 Fri, Oct 17, 2014, 7:28 PM
more than Max Number of concurrent users
Picture of Colin Peters Colin Peters
26 Wed, Oct 15, 2014, 7:28 AM
Server crashes at +20 concurrent users
Picture of Fabulous Phil Fabulous Phil
6 Fri, Oct 10, 2014, 5:43 PM
Slow page loads
Picture of john allen john allen
6 Tue, Oct 7, 2014, 3:46 PM
My IP blocks when adding scorm package
Picture of amir ghasemiyan amir ghasemiyan
4 Mon, Oct 13, 2014, 5:24 PM
5 seconds for output. Slowly load
Picture of Alessandro Baccanelli Alessandro Baccanelli
9 Sun, Sep 21, 2014, 2:40 AM
Moodle 2.7 performance and styles_debug.php
Picture of Alan Kmiecik Alan Kmiecik
3 Wed, Oct 8, 2014, 9:06 AM
Proposal to turn on quiz auto-save by default
Picture of Tim Hunt Tim Hunt
0 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 Mon, Sep 29, 2014, 12:10 PM
hardware required for 500 concurrent users in aws
Picture of Trilok Veeranki Trilok Veeranki
0 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 Thu, Oct 2, 2014, 1:37 AM
Moodle Multi-tenancy or hosting multiple Moodle sites
Picture of Mari Cruz García Mari Cruz García
19 Thu, Sep 11, 2014, 11:20 PM
URL site redirection
Picture of Genner Cerna Genner Cerna
9 Sun, Feb 29, 2004, 1:15 PM
Can Moodle run as distributed?
Picture of Jean Jones Grey Jean Jones Grey
1 Tue, Sep 30, 2014, 7:03 AM
Mem Cache
Picture of john allen john allen
3 Mon, Sep 29, 2014, 6:31 PM
mod_fcgid: error reading data from FastCGI server
Picture of Filippo Carnevali Filippo Carnevali
0 Fri, Sep 26, 2014, 6:45 PM
Linux box (discussion split from The problem with Canvas)
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
9 Mon, Sep 22, 2014, 2:29 AM
If anyone else having performance problems with Locally assigned roles
Picture of Tim Hunt Tim Hunt
0 Thu, Sep 25, 2014, 11:29 PM
Is Opcache enough the improve performance of a Moodle 2.6 site?
Picture of Mari Cruz García Mari Cruz García
0 Thu, Sep 25, 2014, 10:28 PM
Hardware estimate for 10000+ users
Picture of Venkatarathna T V Venkatarathna T V
4 Fri, Sep 5, 2014, 5:38 PM
Session handling: db vs moodledata clarification needed
Picture of Matthew Goral Matthew Goral
10 Thu, Aug 21, 2014, 11:45 PM