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  
[Moodle BenchMark] Need Beta-tester
Picture of Mickaël PANNEQUIN Mickaël PANNEQUIN
99 Sun, Jun 26, 2016, 9:51 PM
Performance perspectives - a little script
Picture of sam marshall sam marshall
91 Wed, Oct 25, 2006, 12:13 AM
Complain about netmondo
Picture of Pio Garcia Pio Garcia
62 Thu, Jun 24, 2004, 6:07 AM
Help choosing a hosting solution
Picture of A Gideon A Gideon
56 Tue, Mar 31, 2009, 2:18 AM
JMeter Scripts
Picture of Ben Steeples Ben Steeples
51 Mon, Mar 23, 2009, 10:19 PM
Backup & Server Performance Major Issue
Picture of Scott Grogg Scott Grogg
49 Mon, Aug 29, 2005, 12:50 AM
bluehost.com
Picture of Art Lader Art Lader
48 Sun, Nov 14, 2004, 3:47 AM
OPTIMIZE does not change fragmentation
Picture of Nathan Bruley Nathan Bruley
48 Thu, Aug 14, 2014, 10:24 PM
Dockerized Moodle - Performance
Picture of Nahum Lipkunsky Nahum Lipkunsky
47 Fri, Feb 16, 2018, 9:18 AM
new installation for 3000 simultaneous users
Picture of Jose Martin Jose Martin
43 Wed, Jan 16, 2008, 3:37 PM
MySQL is overloaded
Picture of Genner Cerna Genner Cerna
42 Mon, Apr 4, 2005, 10:25 AM
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
Quizzes : performance on exams period
Picture of Susana L. Susana L.
39 Wed, May 12, 2010, 1:36 AM
performance: normal load + quiz + grading assignments
Picture of Justin Haaga Justin Haaga
38 Tue, Nov 18, 2008, 8:33 AM
Moodle for Windows on a USB Stick
Picture of Brett Drinkwater Brett Drinkwater
37 Fri, May 12, 2006, 11:10 AM
Quizzes are rending Moodle useless :-(
Picture of Jerry Lau Jerry Lau
37 Thu, Sep 27, 2018, 3:22 AM
Can anyone recommend an OS
Picture of M Y M Y
36 Wed, Mar 1, 2006, 4:04 AM
Login 1000 student at a time on one quiz
Picture of Lalit Thakur Lalit Thakur
35 Tue, Jul 14, 2015, 2:04 PM
Siteground.com as a Moodle host
Picture of Jeff Mehring Jeff Mehring
34 Thu, Jun 28, 2007, 2:39 AM
Memory runs out on new server
Picture of Paul Nijbakker Paul Nijbakker
33 Wed, Sep 5, 2007, 3:41 PM
I AM TERRIFIED : MOODLE IS VERY SLOW !
Picture of fleu risseur fleu risseur
33 Fri, Apr 3, 2015, 6:16 AM
Moodle Performance of Various Servers
Picture of John Cyber John Cyber
32 Fri, Jun 4, 2004, 11:15 PM
Centralized versus decentralized hosting of moodle (VLE's) in HE - what's the future?
Picture of Don Quixote Don Quixote
31 Fri, Mar 26, 2004, 12:21 AM
Servers, RAID, failover, etc.
Picture of John Donaldson John Donaldson
31 Thu, Mar 2, 2006, 9:28 PM
Cheap hosting for Moodle?
Picture of Juan Jose de la Mora Juan Jose de la Mora
30 Tue, Jun 15, 2004, 11:48 AM
site loading slowly and sometime I get database connection failed
Picture of Mr. Shortcut Mr. Shortcut
30 Sat, May 5, 2007, 12:44 AM
CRITICAL PROBLEM WITH MOODLE HOSTING!!!!
Picture of Carlos Morales Socorro Carlos Morales Socorro
29 Fri, Nov 30, 2007, 3:28 AM
Moodle-data storage advice needed for SAN
Picture of Albert Ramsbottom Albert Ramsbottom
29 Wed, Jul 24, 2013, 4:56 PM
Roles performance issues in moodle, whats wrong?
Picture of Markus Hagman Markus Hagman
28 Thu, Nov 9, 2006, 9:53 PM
M 2.5.1, running very, very slow
Picture of Guillermo Madero Guillermo Madero
28 Sat, Aug 3, 2013, 2:40 PM
Load balancer problem with 100 simultaneous users taking a quiz
Picture of Don Hinkelman Don Hinkelman
28 Tue, Aug 4, 2015, 1:58 PM
General PHP/MySQL questions...
Picture of Marc Dastous Marc Dastous
27 Wed, Feb 11, 2004, 2:17 AM
Apache Memory Leak
Picture of Brant Peterson Brant Peterson
27 Fri, Feb 8, 2008, 8:49 PM
User site capacities questions
Picture of Gio Glez Gio Glez
27 Tue, Nov 3, 2015, 11:58 AM
Moodle file picker not working
Picture of Taj Des Taj Des
27 Thu, Mar 30, 2017, 7:58 PM
Migrating 10000 students from Blackboard to Moodle?
Picture of Frederik Questier Frederik Questier
26 Mon, Jun 16, 2003, 5:25 PM
UK host for a large school?
Picture of Darren Smith Darren Smith
26 Fri, Apr 2, 2004, 9:10 PM
Moodle: Load and Speed issues
Picture of Samuel Cochran Samuel Cochran
26 Wed, Oct 19, 2005, 1:47 AM
Linux vs Windows 2003
Picture of Red Morris Red Morris
26 Fri, Aug 25, 2006, 6:33 PM
rearranging course categories is very slow
Picture of Tobias Marx Tobias Marx
26 Tue, Aug 21, 2007, 11:39 PM
Preferred method of converting MyISAM to InnoDB
Picture of HJWUCGA INC. HJWUCGA INC.
26 Thu, Sep 17, 2009, 1:12 AM
Large site, VMWare, Advice needed
Picture of heli g heli g
26 Tue, Mar 23, 2010, 9:14 PM
500 concurrent users on vitualization
Picture of Florin Cazanaru Florin Cazanaru
26 Thu, Jul 19, 2012, 9:57 PM
Recommendation on VPS spec
Picture of Melissa Benson Melissa Benson
26 Thu, Nov 28, 2013, 1:31 AM
more than Max Number of concurrent users
Picture of Colin Peters Colin Peters
26 Wed, Oct 15, 2014, 7:28 AM
Moodle Clustering
Picture of Jay Sharpe Jay Sharpe
25 Fri, Oct 27, 2006, 2:03 AM
Domain forwarding & how to get my domain in the address bar
Picture of Jason Hollowell Jason Hollowell
25 Sat, Apr 28, 2007, 9:10 PM
Moodle performance testing: 1.9 vs. 2.0
Picture of Ruslan Kabalin Ruslan Kabalin
25 Wed, Nov 10, 2010, 11:27 PM
The quiz function of moodle 2.3.2 seems to put quite a strain on a server
Picture of curt bixel curt bixel
25 Sun, Oct 7, 2012, 4:32 AM
Same application,different hardware,No change in performance
Picture of shrikant gakhare shrikant gakhare
25 Sun, Dec 30, 2012, 12:36 AM
Slow logins and page/video/SCORM quiz loads
Picture of Daniel Williams Daniel Williams
25 Fri, Aug 1, 2014, 4:22 AM
Login for anyone takes a long time - after upgrade
Picture of David White David White
25 Sun, May 1, 2016, 4:06 AM
Requested Range Not Satisfiable
Picture of Thomas Haynes Thomas Haynes
24 Wed, Dec 1, 2004, 1:38 AM
Which distribution of Linux should we use?
Picture of n - n -
24 Sat, Oct 8, 2005, 1:53 PM
Preliminery observations for 100 concurrency test
Picture of rupesh patil rupesh patil
24 Fri, Jun 12, 2009, 5:37 PM
To host or not to host a moodle site
Picture of Teresa Fryer Teresa Fryer
24 Thu, Feb 11, 2016, 4:35 AM
Moodle slow for the first visitor then quick thereafter
Picture of Walter Buchanan Walter Buchanan
24 Tue, Oct 3, 2017, 12:14 PM
Cron: once more
Picture of Hans de Zwart Hans de Zwart
23 Thu, Jan 8, 2004, 8:58 PM
Inexpensive Web Hosts and a Question
Picture of Erlyn Baack Erlyn Baack
23 Tue, Jul 6, 2004, 12:55 PM
eAccelerator vs. APC
Picture of Ralph Patterson Ralph Patterson
23 Sun, Jan 21, 2007, 2:08 PM
Hardware Requirements of Moodle
Picture of Antony Meyn Antony Meyn
23 Sat, Mar 29, 2008, 2:17 AM
How do you monitor your Moodle server?
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
23 Mon, Dec 12, 2011, 10:09 PM
Go Daddy! (Where to?)
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
23 Sat, Dec 31, 2011, 8:38 PM
apache is eating all the CPU, 0% idle
Picture of Eslam Gamie Eslam Gamie
23 Sat, Nov 21, 2015, 12:57 AM
Has Moodle become thrifty?
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
23 Tue, Jan 5, 2016, 11:12 PM
New Moodle Slow saving grade changes
Picture of Jason Touw Jason Touw
23 Thu, Jan 7, 2016, 8:42 AM
Moodle on Windows/IIS/MS SQL - known issues ?
Picture of Angelin Lalev Angelin Lalev
23 Tue, Jan 12, 2016, 12:11 AM
Why is my small Moodle setup maxing out my server's 1 GB memory limit?
Picture of Ellen Spertus Ellen Spertus
23 Tue, Apr 3, 2018, 8:57 AM
Diagnosing issue with Moodle caching
Picture of Alistair Spark Alistair Spark
23 Fri, Aug 9, 2019, 11:06 PM
Moodle 1.6 - which distribution of Linux
Picture of giacomo gensini giacomo gensini
22 Thu, Jun 29, 2006, 6:10 PM
Can PC class machine support 250 concurrent users?
Picture of fouzia imran fouzia imran
22 Wed, Aug 9, 2006, 4:49 PM
Stats problems again - new bug in Moodle 1.9.2?
Picture of Tony Butler Tony Butler
22 Thu, Aug 21, 2008, 9:02 PM
Which Linux?
Picture of Steve Squires Steve Squires
22 Thu, May 13, 2010, 3:31 PM
Godaddy: VPS or (which) dedicated?
Picture of Gary Lebowitz Gary Lebowitz
22 Mon, Feb 11, 2013, 9:13 PM
Moodle 2.4 much slower than 2.3 on Windows Server
Picture of Benjamin St.Germain Benjamin St.Germain
22 Thu, Mar 28, 2013, 9:44 AM
File picker never loading...
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
22 Mon, Feb 26, 2018, 7:47 PM
Moodle Performance Issue with 4 users
Picture of Paul Young Paul Young
22 Fri, Mar 15, 2019, 12:28 AM
Moodle for school - hosted? - own server? - can anyone advise?
Picture of Jenny Toller Jenny Toller
21 Sun, May 23, 2004, 2:46 AM
Server still running HIGH CPU
Picture of Ryan Kelley Ryan Kelley
21 Wed, Oct 21, 2009, 7:53 PM
Moodle 2 is VERY SLOW - Staff are not happy!
Picture of Michael Dean Michael Dean
21 Wed, Jan 25, 2012, 6:10 AM
What would you buy?
Picture of Eric Hagley Eric Hagley
21 Wed, Sep 11, 2013, 2:56 PM
VPS, too high CPU usage with just one request
Picture of Oscar Martin Martinez Oscar Martin Martinez
21 Fri, May 11, 2018, 6:12 PM
Apache CPU High Usage when opening tasks
Picture of Marc Celeiro Marc Celeiro
21 Thu, Jan 17, 2019, 3:50 AM
Concurrent Users
Picture of Mark Berthelemy Mark Berthelemy
20 Wed, May 7, 2003, 10:01 PM
Some benchmark results
Picture of Lawrence Khoo Lawrence Khoo
20 Sat, Apr 24, 2004, 12:31 AM
MyISAM to InnoDB
Picture of Martin Dougiamas Martin Dougiamas
20 Thu, Sep 23, 2004, 8:56 PM
Improve speed of Moodle and server.
Picture of Genner Cerna Genner Cerna
20 Fri, Nov 12, 2004, 2:35 PM
Information on Moodle Scalability (100,000+ users)
Picture of Bryan Chapman Bryan Chapman
20 Fri, Aug 19, 2005, 12:44 AM
Large scale Moodle Host Questions
Picture of joe sumpter joe sumpter
20 Wed, Sep 16, 2009, 6:13 AM
Two Moodle Web Servers... HELP!
Picture of Kris Turner Kris Turner
20 Sat, Sep 18, 2010, 4:43 AM
Why are we running so slowly?
Picture of d morte d morte
20 Wed, Oct 6, 2010, 12:47 AM
The longer the day goes it seems to get slower
Picture of Mr. Marc Mr. Marc
20 Thu, Aug 2, 2012, 12:30 AM
2.4.3 Performance issues - session locks
Picture of Susan Mangan Susan Mangan
20 Sat, May 4, 2013, 1:16 AM
pluginfile.php performance problem
Picture of Phil Loaiza Phil Loaiza
20 Thu, Sep 11, 2014, 3:32 AM
Moodle 2.8.1. Server Cluster configuration. Apache Crashing with "exit signal Bus error (7)"
Picture of José Antonio Omedes Capdevila José Antonio Omedes Capdevila
20 Mon, Jul 6, 2015, 10:27 PM
Filesystem recommendations for cross-network HA setup?
Picture of Brad Smith Brad Smith
20 Sat, Mar 12, 2016, 3:47 AM
Moodle become slow when editing a user profile
Picture of mimi nom mimi nom
20 Tue, Feb 20, 2018, 11:16 PM
Performance blues
Picture of Paul Johnson Paul Johnson
19 Sun, Dec 5, 2004, 6:23 PM
php_extension mbstring is recommended to be installed/enabled
Picture of Simon Scholey Simon Scholey
19 Fri, Feb 17, 2006, 7:43 AM
Moodle Hosting Sites
Picture of Steve Wu Steve Wu
19 Tue, Mar 14, 2006, 11:34 PM