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 2652 discussions
  Discussion Started by Replies Last post Created  
Memcached Moodle site still DB row locking
Picture of jerrett fowler jerrett fowler
6 Fri, Feb 27, 2015, 6:47 PM
installation moodle
Picture of joss micheal joss micheal
7 Thu, Feb 26, 2015, 3:08 PM
Event Monitoring Performance
Picture of Michael Hughes Michael Hughes
10 Wed, Feb 18, 2015, 9:12 PM
Needs Assesment
Picture of Eric Guedegbe Eric Guedegbe
3 Mon, Feb 9, 2015, 9:02 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
Newbie ? - Short video clip storage
Picture of Tim Edsell Tim Edsell
0 Fri, Feb 6, 2015, 12:15 AM
Sporadic email delivery times
Picture of Nathan Bruley Nathan Bruley
2 Thu, Feb 5, 2015, 11:56 PM
Moodle 2.7 is very slow
Picture of system vim system vim
1 Tue, Feb 3, 2015, 5:53 PM
MOODLE 2.7 on Yosemite w/ Firefox
Picture of Frank Keating Frank Keating
3 Tue, Feb 3, 2015, 5:04 AM
Capture Cards on Moodle
Picture of Lawrence Mallari Lawrence Mallari
1 Thu, Jan 29, 2015, 1:47 PM
Setting Up Memcache with transparent session failover
Picture of Jeff White Jeff White
2 Thu, Jan 29, 2015, 5:05 AM
Managing the number of tables in SQL databases
Picture of Gustavo Monteiro Gustavo Monteiro
2 Wed, Jan 28, 2015, 8:45 AM
hardware requirements for 500 concurrent users
Picture of abdelrhman Al-tawdy abdelrhman Al-tawdy
2 Wed, Jan 21, 2015, 4:34 PM
Slow cronjobs in 2.7 vs 2.6
Picture of Ellio Mourinho Ellio Mourinho
0 Wed, Jan 21, 2015, 4:33 AM
Working and load very slow my site
Picture of gourav gourav gourav gourav
1 Wed, Jan 14, 2015, 3:43 PM
Hardware Requirement for 65 Con Current Users
Picture of Martin Fernandes Martin Fernandes
2 Wed, Jan 14, 2015, 1:07 PM
Are memcached cache tests always slower than file cache
Picture of Joe Snuffy Joe Snuffy
8 Wed, Jan 14, 2015, 8:46 AM
How many concurrent users should my hardware support?
Picture of Hassan AbdelSabour Hassan AbdelSabour
10 Mon, Jan 5, 2015, 5:46 AM
Performence problem in 2.4
Picture of Sigal Rashba Sigal Rashba
1 Sun, Jan 4, 2015, 10:47 PM
Unable to edit quiz after upgrade from 2.7.3+ to 2.8.1+
Picture of Joe Chapman Joe Chapman
42 Sat, Jan 3, 2015, 12:43 AM
cron job on a hosted site
Picture of Alex Delaforce Alex Delaforce
6 Sat, Dec 27, 2014, 10:35 AM
2.6.6 custom search Improvement
Picture of José Puente Fuentes José Puente Fuentes
2 Sat, Dec 20, 2014, 10:23 PM
Dealing with "login storm"
Picture of Colin Matheson Colin Matheson
3 Thu, Dec 18, 2014, 1:09 AM
Saving quiz caching takes a long time and crashes
Picture of Michael Ko Michael Ko
12 Wed, Dec 17, 2014, 2:22 PM
Cron job - 2 web servers - different schedule
Picture of Job Cespedes Job Cespedes
1 Wed, Dec 17, 2014, 5:39 AM
2.8.1 production server
Picture of José Puente Fuentes José Puente Fuentes
4 Mon, Dec 15, 2014, 9:48 PM
longest Latency
Picture of Paul Wakelam Paul Wakelam
0 Sun, Dec 7, 2014, 8:02 PM
Very slow course participation reports
Picture of Josef Fortier Josef Fortier
3 Fri, Dec 5, 2014, 6:32 AM
Migrating from a linux to a windows server
Picture of Eric Miletich Eric Miletich
11 Tue, Dec 2, 2014, 9:57 PM
add a link in administration with php code
Picture of abbaspour abbaspour abbaspour abbaspour
0 Sun, Nov 30, 2014, 4:22 PM
Weird message in php error log file
Picture of Mari Cruz García Mari Cruz García
4 Thu, Nov 27, 2014, 8:41 PM
Special Characters strange behavior after update to 2.8.1
Picture of Rolf Petersen Rolf Petersen
1 Wed, Nov 26, 2014, 4:35 PM
Heavy IO problem
Picture of Ryan-Neal Mes Ryan-Neal Mes
8 Tue, Nov 25, 2014, 11:19 PM
Moodle course page slow only with Firefox
Picture of Hittesh Ahuja Hittesh Ahuja
12 Wed, Nov 19, 2014, 9:33 PM
Will upgrading php and mysql Damage Moodle 2.5?
Picture of Miki Alliel Miki Alliel
2 Tue, Nov 18, 2014, 4:53 AM
Moodle 2.2 connection-specific(??) hangs?
Picture of Brad Smith Brad Smith
5 Tue, Nov 18, 2014, 4:34 AM
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 2.7 RUNNING VERY VERY SLOW
Picture of john whetton john whetton
9 Fri, Nov 14, 2014, 8:19 PM
What to do about memcached cache reset
Picture of Dan Poltawski Dan Poltawski
3 Wed, Nov 12, 2014, 6:09 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
Problem with email messages in 2.7
Picture of Gary Lebowitz Gary Lebowitz
2 Sat, Nov 8, 2014, 1:43 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
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
Upgrading MySQL 5.1 to 5.5 , configuration setting changes?
Picture of Paul L Paul L
9 Fri, Oct 31, 2014, 3:25 AM
Certain actions very slow regardless of load
Picture of Henry Foster Henry Foster
5 Wed, Oct 29, 2014, 5:45 PM
Can't seem to get sessions saved in memcached
Picture of Matej Zerovnik Matej Zerovnik
12 Tue, Oct 28, 2014, 11:30 PM
Error on Moodle
Picture of Luis Yovany Romo Portilla Luis Yovany Romo Portilla
1 Tue, Oct 28, 2014, 10:06 PM
100 active users limit with 4vCPU
Picture of Matej Zerovnik Matej Zerovnik
19 Fri, Oct 24, 2014, 7:19 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
My IP blocks when adding scorm package
Picture of amir ghasemiyan amir ghasemiyan
4 Mon, Oct 13, 2014, 5:24 PM
Server crashes at +20 concurrent users
Picture of Fabulous Phil Fabulous Phil
6 Fri, Oct 10, 2014, 5:43 PM
20 Concurrent users - 4GB SLOW
Picture of hernani moodle hernani moodle
12 Fri, Oct 10, 2014, 5:33 PM
Synchronize user pictures
Picture of Luke Baker Luke Baker
3 Thu, Oct 9, 2014, 4:38 PM
Moodle 2.7 performance and styles_debug.php
Picture of Alan Kmiecik Alan Kmiecik
3 Wed, Oct 8, 2014, 9:06 AM
Slow page loads
Picture of john allen john allen
6 Tue, Oct 7, 2014, 3:46 PM
Proposal to turn on quiz auto-save by default
Picture of Tim Hunt Tim Hunt
0 Tue, Oct 7, 2014, 6:23 AM
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
Shared Hosting decision
Picture of Francisco Lemus Francisco Lemus
12 Wed, Oct 1, 2014, 4:14 AM
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
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
mod_fcgid: error reading data from FastCGI server
Picture of Filippo Carnevali Filippo Carnevali
0 Fri, Sep 26, 2014, 6:45 PM
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
Performance issue
Picture of Jacqui C Jacqui C
1 Wed, Sep 24, 2014, 12:01 PM
Quiz Question Format
Picture of Michael "doc" Crawford Michael "doc" Crawford
1 Tue, Sep 23, 2014, 1:27 PM
Linux box (discussion split from The problem with Canvas)
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
9 Mon, Sep 22, 2014, 2:29 AM
5 seconds for output. Slowly load
Picture of Alessandro Baccanelli Alessandro Baccanelli
9 Sun, Sep 21, 2014, 2:40 AM
Moodle consuming all server's CPU - Unusually large mdl_questions table
Picture of Ivan Olivero Ivan Olivero
5 Sat, Sep 20, 2014, 5:56 AM
course-completion-report
Picture of Rolf Petersen Rolf Petersen
4 Fri, Sep 19, 2014, 11:15 PM
Problem with Google SSO
Picture of amarnath Kamepalli amarnath Kamepalli
0 Thu, Sep 18, 2014, 11:19 PM
memcache slow?
Picture of Rikard E Rikard E
7 Thu, Sep 18, 2014, 10:26 PM
Slow moodle (2.5.2) hosting ourselves on WIndows
Picture of john allen john allen
2 Wed, Sep 17, 2014, 5:33 PM
Moodle Universal Cache, filesystem available space, designer mode
Picture of Peter Kehl Peter Kehl
1 Wed, Sep 17, 2014, 7:22 AM
Assignment Uploads Slow in Moodle 2.7
Picture of IronHorse University IronHorse University
3 Wed, Sep 17, 2014, 2:44 AM
Moodle Universal Cache, tmpfs, theme designer mode
Picture of Peter Kehl Peter Kehl
1 Tue, Sep 16, 2014, 3:34 PM
ERROR!!! The code you are using is OLDER after change database
Picture of reza budi ryanzah reza budi ryanzah
1 Tue, Sep 16, 2014, 12:50 PM
Moodle Multi-tenancy or hosting multiple Moodle sites
Picture of Mari Cruz García Mari Cruz García
19 Thu, Sep 11, 2014, 11:20 PM
pluginfile.php performance problem
Picture of Phil Loaiza Phil Loaiza
20 Thu, Sep 11, 2014, 3:32 AM
Hardware estimate for 10000+ users
Picture of Venkatarathna T V Venkatarathna T V
4 Fri, Sep 5, 2014, 5:38 PM
More on the previous posting. Problems uploading File resource in 2.7
Picture of Gary Lebowitz Gary Lebowitz
2 Fri, Sep 5, 2014, 12:26 PM
Moodle 2.7 running on virtual server with 1Gbyte RAM
Picture of Gary Lebowitz Gary Lebowitz
0 Fri, Sep 5, 2014, 11:36 AM
Performance issues with course overview + memcached
Picture of Ellio Mourinho Ellio Mourinho
8 Fri, Sep 5, 2014, 2:04 AM
is MySQL 5.5 Ok for Moodle 1.9
Picture of Bernat Martinez Bernat Martinez
6 Wed, Sep 3, 2014, 2:21 PM
Settings for Moodle Drag and Drop
Picture of Mark Chaney Mark Chaney
3 Mon, Sep 1, 2014, 7:58 PM
Slow moodle 2.7 on update
Picture of Nathan Friend Nathan Friend
7 Mon, Sep 1, 2014, 3:46 PM
Open in new window Scorm loads but does not open
Picture of Ricardo Plácido Ricardo Plácido
0 Fri, Aug 29, 2014, 1:36 AM
Ubuntu server partitioning and Moodle 2.7 recommendations
Picture of Rick Sparrow Rick Sparrow
1 Thu, Aug 28, 2014, 11:52 PM
Hardware Requirements for Moodle 2.7
Picture of Ramit Kumar Ramit Kumar
3 Thu, Aug 28, 2014, 11:33 AM
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
Single Sign On for different Moodle instances
Picture of Kristina Ban Kristina Ban
0 Wed, Aug 27, 2014, 11:02 PM
Moodle networking as solution for performance problems
Picture of Kristina Ban Kristina Ban
4 Tue, Aug 26, 2014, 7:36 PM
Moodle 2.7 Theme Cache not working?
Picture of Janet Smith Janet Smith
1 Sat, Aug 23, 2014, 12:19 AM
Session handling: db vs moodledata clarification needed
Picture of Matthew Goral Matthew Goral
10 Thu, Aug 21, 2014, 11:45 PM
Deleting course slow??
Picture of Judy Hsu Judy Hsu
1 Thu, Aug 21, 2014, 4:31 AM