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.

DiscussionStarted byRepliesLast post
Help ,Hardware and performance for Moodle server" 3 Usman Asar
Moodle 2.4 much slower than 2.3 on Windows Server 22 Paul L
What makes the "Teaching with Moodle" MOOC course work so well? 14 Anna Jonna Ármannsdóttir
moodle 2.4.7 is very slow....help me please T_T 9 samuel h
Does this data point to where our bottleneck is. 10 Simon Brock
Moodle and Wordpress Server farm/cluster 4 Albert Ramsbottom
Full Site Backups 10 Albert Ramsbottom
Hosting "Grade" 4 Howard Miller
Using igbinary serializer 1 Adam Durana
Cron for two web servers 11 Guillermo Madero
Is Moodle 2.5.2+ faster than 2.5.1+ ? 0 Rick Jerz
Moodle 2.5.2 Site page loads for admin user 2 Haakon Meland Eriksen
Health Tool 0 Rory Peacock
Significant slow down on login 6 Visvanath Ratnaweera
Jmeter again, different results 1 Mathew Gancarz
System Locking up with more than a dozen users 17 Mark Hardwick
Can I built moodle site with EasyPHP+windows server2003+moodle2.5.2 0 rui zeng
Question re using linux TOP and associating PID with process/task 5 Susan Mangan
Error when testing moodle using JMeter 4 Albert Ramsbottom
Hardware requirement for moodle 8 Emma Richardson
20+ language packs installed - bad for performance? 1 Tim Hunt
Please help me configure mysql for large Moodle site. 1 jason everling
Hardware for 1400 users 1 jason everling
Moodle performance in hosted environement 0 Alan Kmiecik
Activated caching (memcached) produces segmentation faults 4 Matteo Ricci
play video in mobile not play 0 laww m
Moodle 2.5.2 for Windows loading very slow 0 Pippo Pioppo
Moodle High Availability and failed over 19 CoreDev Develop
Plugin Error 0 Freddie Batista
Unofficial (?) preview of Moodle 2.6 performance 0 Justin Filip
character encoding pound signs 4 Guillermo Madero
Major Performance Issues 2.4.3 (Need Help) 1 Ken Task
UnixBench 16 Visvanath Ratnaweera
Apache processes 1 Howard Miller
Many php-cgi processes brings down moodle, more resources needed? 7 Paul L
Moodle 2.4.5 vs 2.5.1 performance and MUC APC cache store 5 Justin Filip
Error Reading Database Moodle 2.51 1 Usman Asar
Moodle 1.9 migrated site EXTREMELY SLOW 3 Adam Durana
Performance on Dreamhost VPS 6 Usman Asar
How to (really) delete fake accounts? 0 David Dunn
Too many moodle precesses 1 Ralph Ballier
2.4.5+ (Build: 20130712) - intermittent performance issues 10 Samuel Witzig
Issues installing APC on shared server 8 Shirley Berry
Minimum Hardware 4 Visvanath Ratnaweera
Better location for moodledata directory? 1 jason everling
local mysql vs remote server 1 Tim Hunt
Server suddenly uses all memory resources. 0 Arnold Lamont
Poor performance on Windows virtual server 17 AL Rachels
Super slow site 0 Eugene Voevodin
Godaddy: VPS or (which) dedicated? 22 Yousef H.
Restoring courses is slow, php settings advice 7 Rick Jerz
Hardware Architecture of Moodle (moodle.org) Site 3 Guillermo Madero
Moodle crash error 7 Vic Vicenzi
Moodle-data storage advice needed for SAN 29 jason everling
M 2.5.1, running very, very slow 28 Guillermo Madero
Performance hit on 2.5 upgrade for admin users 8 Guillermo Madero
Moodle 2.5.1 running slow -- with troubleshooting details 6 Howard Miller
how many users with same ip? 9 Eduardo Gomez
Memcache Configuration 8 jason everling
Large site, VMWare, Advice needed 26 J S
High Load Averages 2 J S
My Moodle 2.5.1 is performing very slowly 2 J S
Use Drizzle instead of MySQL database 3 Sekahr m
Moodle causing httpd service to hog CPU 0 Ash Roach
new installation for 3000 simultaneous users 43 Mr. Marc
Moodle work very slow and Apache crash down 4 Aurimas J
Size problems: files not cleaned 15 Guillermo Madero
moodle cachestore_file 11 Petr Skoda
Google Page Speed Insights updated 4 David Scotson
multi hosting/vps server expert required 1 Visvanath Ratnaweera
moodle 2.5 performance 0 Sanjay Pandey
Moodle 2.51 clean install much slower than Moodle 2.3.2 clean install 0 Sam Mudle
JMeter and Moodle login 2 CoreDev Develop
Apache JMeter stress test for Moodle Questionaire 4 CoreDev Develop
Moodle 2.5.1 running slow on any machine I use 0 Sergiu Lazarescu
Performance issue over WAN 0 vedkumar gupta
/mod/quiz/view.php progressively slower 1 Tim Hunt
Training deployment in Moodle 0 Kaustav Pramanik
Moodle with clustered DB replication issues 2 Rubén Romero
Help! Cannot log in - error writing to database 3 Peter Dorman
3 things to do to enhance speed. 5 David Scotson
Looking for cheapy host that can support 2.2 11 Richard Teesdale
Moodle High Availability needed 4 jason everling
What is the correct MUC setting for running Moodle 2.4.4+ in a clustering environment? 2 CP Lau
Moodle Performance Testing in AWS 5 Grant Mucha
Questionnaire is very slow when access by 100 users 4 CoreDev Develop
Moodle 2.4 Hardware and Performance Optimization 2 Brett Cairns
Hardware requirements for a Moodle-medium size in CenTOS 6 Mari Cruz García
Moodle very slow or not responding 17 Rick Jerz
Using SPDY with Moodle? 0 David Scotson
New Server for our VLE 1 M O Faruque Sarker
Moodle best Hosting 3 Sam Mudle
Moodle 2.4 performance 10 Michael Haskell
Hardware and Performance 0 Junaid Vindhani
Moodle 2.2.2+ & GoDaddy 4GH 14 Rick Jerz
Load Balanced and Auto-Scalling with Amazon EC2 3 jason everling
Infraestructure to Moodle with 80000 users 1 Vijay N
Where to start choosing a server spec for moodle 2.# 0 Tom Moseley
Bulk Answer for Setup 2 jason everling
Profile pictures loads very slow on Moodle 2.2 2 Mats Johansson