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 2643 discussions
  Discussion Started by Replies Last post Created  
Cache store performance reporting
Picture of Andrey Kladiti Andrey Kladiti
0 Mon, Jul 22, 2019, 2:55 AM
Very Slow Site after migrating to a VPS
Picture of Leah Lever Leah Lever
2 Tue, Jul 16, 2019, 6:51 PM
Minimum Server Requirements
Picture of Manu Krishna Manu Krishna
3 Thu, Jul 11, 2019, 2:59 PM
How do i make site online/public?
Picture of Marg Smith Marg Smith
5 Wed, Jul 10, 2019, 3:10 PM
Too many opened sessions on Moodle 2.7.20
Picture of Cristian Santibañez Cristian Santibañez
2 Wed, Jul 3, 2019, 12:38 AM
Slow Moodle in Thin Clients
Picture of Alec Jordan Buencamino Alec Jordan Buencamino
0 Mon, Jun 24, 2019, 10:41 PM
Too many files problem
Picture of Steve Massicotte Steve Massicotte
11 Thu, Jun 20, 2019, 8:53 PM
Memcached store instance disappears after days
Picture of Ryan Chan Ryan Chan
1 Thu, Jun 20, 2019, 10:46 AM
How to stress test Moodle?
Picture of Mario Gharib Mario Gharib
4 Mon, Jun 17, 2019, 2:57 AM
Updating Browsers and OS for better Moodle performance
Picture of Mario Gharib Mario Gharib
1 Mon, Jun 17, 2019, 2:56 AM
Moodle scalability
Picture of Thinh Dang Thinh Dang
3 Sat, Jun 15, 2019, 9:24 PM
Redis and stunnel
Picture of Mark Johnson Mark Johnson
0 Fri, Jun 14, 2019, 10:41 PM
Recent experiences with GlusterFS?
Picture of Noveck Gowandan Noveck Gowandan
1 Thu, Jun 6, 2019, 10:45 PM
General performance question
Picture of Heinz Felfe Heinz Felfe
15 Wed, Jun 5, 2019, 10:13 PM
Simple global search
Picture of Michelle Melton Michelle Melton
0 Tue, May 28, 2019, 8:05 PM
Globally distributed installation
Picture of Simon Lewis Simon Lewis
10 Wed, May 22, 2019, 10:45 PM
Moodledocs: Summary of cache lock instances
Picture of Luis de Vasconcelos Luis de Vasconcelos
3 Wed, May 22, 2019, 4:44 PM
Tuning FCGI and Apache for Moodle
Picture of Stephen Bourget Stephen Bourget
11 Sat, May 18, 2019, 12:08 AM
Admin Pages Slow (10-20 sec page loads)
Picture of Tom Palaz Tom Palaz
5 Tue, May 14, 2019, 5:17 AM
Sudden Proxy Error, no recent system changes
Picture of Tiffany Morgan Tiffany Morgan
8 Tue, May 14, 2019, 4:49 AM
Redis Cache Lock Issue
Picture of Eric Katchan Eric Katchan
2 Thu, May 2, 2019, 8:19 PM
PHP errors Moodle 3.4.5, PHP 7.1.27, MySQL 5.7.23.23
Picture of Barbara Taylor Barbara Taylor
9 Wed, May 1, 2019, 4:41 AM
Moodle 3.4.2 Performance
Picture of sheikh usman sheikh usman
2 Tue, Apr 30, 2019, 6:20 PM
Redis cache store instance
Picture of Luis de Vasconcelos Luis de Vasconcelos
1 Tue, Apr 23, 2019, 11:30 PM
Caching & Application Cache in Cluster
Picture of Saad Zaman Saad Zaman
15 Mon, Apr 22, 2019, 7:44 PM
configuring redis and APCu
Picture of stefan weber stefan weber
3 Thu, Apr 18, 2019, 7:36 PM
Performance with 2500 concurrent users
Picture of Stephen Tod Stephen Tod
5 Thu, Apr 18, 2019, 1:54 AM
Slow from University server
Picture of Scott Bingham Scott Bingham
1 Wed, Apr 17, 2019, 6:57 AM
External database log - will it copy existing?
Picture of Diane Soini Diane Soini
2 Mon, Apr 15, 2019, 11:23 PM
Users bounced off the server?
Picture of heli g heli g
2 Fri, Apr 12, 2019, 9:43 PM
Flushing all the caches causes a fatal error
Picture of Service Usagers du Numérique Service Usagers du Numérique
2 Fri, Apr 12, 2019, 8:55 PM
Slowest queries are inserting single row into mdl_sessions
Picture of Diane Soini Diane Soini
14 Tue, Apr 9, 2019, 8:00 AM
Certain pages loading very slow
Picture of Albert R. Albert R.
2 Tue, Apr 9, 2019, 7:57 AM
Moodle + AWS EFS + filecachesd is it recommended?
Picture of Christos Savva Christos Savva
2 Tue, Apr 2, 2019, 6:23 PM
Cluster setup Help
Picture of Simon Powell Simon Powell
19 Fri, Mar 22, 2019, 7:18 PM
Moodle Performance Issue with 4 users
Picture of Paul Young Paul Young
22 Fri, Mar 15, 2019, 12:28 AM
Can anyone share a performant Redis cache configuration?
Picture of wz z wz z
2 Wed, Mar 13, 2019, 5:07 PM
10K Users - 2 hours Exam
Picture of uk nites uk nites
2 Sun, Mar 10, 2019, 8:24 PM
Moodle performance issues with mysql
Picture of Sreepathy T L Sreepathy T L
6 Sun, Mar 10, 2019, 8:19 PM
XAMPP on Windows Server 2012 running in production
Picture of Michael Hankins Michael Hankins
19 Sat, Mar 9, 2019, 3:09 PM
Data Privacy and Large Moodles
Picture of David Dixon David Dixon
2 Fri, Mar 8, 2019, 6:11 PM
What Size Should ramdisk/tmpfs Be for 'temp' and 'cache' ?
Picture of Paul L Paul L
11 Tue, Mar 5, 2019, 1:49 AM
JMeter Moodle Test
Picture of Richard Brown Richard Brown
0 Tue, Feb 26, 2019, 11:15 PM
The right Database to use
Picture of Hal MacLean Hal MacLean
10 Tue, Feb 26, 2019, 6:28 PM
Web Access of moodle console is slow & www-root consuming 100% CPU Utilization.
Picture of Mohd Hassan Uddin Mohd Hassan Uddin
0 Mon, Feb 25, 2019, 4:46 PM
Moodle creating Excessive I/Os
Picture of Greg Merriman Greg Merriman
3 Thu, Feb 21, 2019, 10:13 PM
Off-boarding ClamAV from web nodes?
Picture of Jeff White Jeff White
14 Wed, Feb 20, 2019, 2:50 AM
performance with mysqltuner
Picture of mimi nom mimi nom
2 Tue, Feb 19, 2019, 5:19 PM
Error communicating with server
Picture of Randy Foster Randy Foster
0 Tue, Feb 19, 2019, 11:10 AM
moodle in azure
Picture of MARIA CENTENO MARIA CENTENO
7 Tue, Feb 19, 2019, 3:26 AM
Moodle deployment on cloud recommended specifications
Picture of Pushpendra Vishal Kaushal Pushpendra Vishal Kaushal
1 Wed, Feb 13, 2019, 5:35 PM
Overriding server timeout parameter can create chaos
Picture of Pierre Raynaud Pierre Raynaud
3 Tue, Feb 12, 2019, 7:48 PM
Exclude webservice user from Moodle logs
Picture of Richard van Iwaarden Richard van Iwaarden
0 Thu, Feb 7, 2019, 11:52 PM
Moodle crashing with "Too many open files"
Picture of Debbie Unterseher Debbie Unterseher
2 Thu, Feb 7, 2019, 2:05 AM
Email sent via email_to_user() needs to be queued for background sending
Picture of Chris Yust Chris Yust
7 Sat, Feb 2, 2019, 1:43 AM
Moodle System Requirements for 500 Active Concurrent User
Picture of Daoud El Gharib Daoud El Gharib
6 Mon, Jan 28, 2019, 10:56 PM
Student upload issues only on certain network
Picture of Jessica Dawson Jessica Dawson
7 Thu, Jan 24, 2019, 9:40 PM
Apache CPU High Usage when opening tasks
Picture of Marc Celeiro Marc Celeiro
21 Thu, Jan 17, 2019, 3:50 AM
Moodle server resources for 1000+ users
Picture of Redzy Red Redzy Red
5 Wed, Jan 16, 2019, 4:42 PM
Timeouts during an exam
Picture of Danishka Navin Danishka Navin
13 Sat, Jan 12, 2019, 2:59 PM
Using config.php for configuration management -> performance impact?
Picture of Alistair Spark Alistair Spark
6 Fri, Jan 11, 2019, 7:24 PM
Slow backup and restore of small quizes where there's a lot of question in course
Picture of Yedidia Klein Yedidia Klein
1 Thu, Dec 13, 2018, 1:40 AM
Requirement for Migrating My Moodle School
Picture of Arnold Yu Arnold Yu
12 Mon, Dec 10, 2018, 12:45 PM
NFS for dataroot
Picture of Keith D Keith D
13 Fri, Dec 7, 2018, 2:13 AM
How to test performance?
Picture of Paul L Paul L
3 Sat, Nov 24, 2018, 4:10 AM
Hardware requirement for my setup
Picture of Muhammad Abdullah Ijaz Muhammad Abdullah Ijaz
2 Thu, Nov 22, 2018, 1:50 PM
MCQ with random question performance issue
Picture of Mihir J Mihir J
3 Thu, Nov 22, 2018, 12:05 PM
Recommended specs - new moodle installation
Picture of Basti Bunz Basti Bunz
2 Wed, Nov 14, 2018, 4:35 PM
Anyone running HTTP/2?
Picture of Rex Lorenzo Rex Lorenzo
7 Wed, Nov 14, 2018, 7:58 AM
Can Redis Shared Application cache run on local nodes?
Picture of Jan Derriks Jan Derriks
5 Sat, Nov 10, 2018, 6:58 PM
PHP-cgi.exe 100% load CPU one core
Picture of István Farkas István Farkas
6 Fri, Nov 9, 2018, 12:23 AM
Big jumps in mysql memory usage
Picture of David Garden David Garden
7 Wed, Nov 7, 2018, 4:19 PM
Php memory_limit, what is the good way
Picture of Aurélien Besson Aurélien Besson
3 Tue, Nov 6, 2018, 4:49 AM
SCORM Package breaks from 500 errors on image files?
Picture of David Garden David Garden
1 Mon, Nov 5, 2018, 4:39 AM
Uploaded files have long post-processing time
Picture of Rex Lorenzo Rex Lorenzo
1 Sat, Nov 3, 2018, 5:20 AM
Questions about load balancing methods and the session cache
Picture of Andrew Howe Andrew Howe
6 Wed, Oct 31, 2018, 9:08 PM
How to test performance, with and without Wincache
Picture of Paul L Paul L
0 Wed, Oct 31, 2018, 2:02 AM
Course-level backup on large-ish instance
Picture of Mark van Hoek Mark van Hoek
2 Tue, Oct 30, 2018, 10:26 AM
Hardware for 100 concurrent users
Picture of Mohammad Hallak Mohammad Hallak
10 Sat, Oct 27, 2018, 5:05 PM
moodle for digital exam for about 70 students
Picture of sanaz karimkhani sanaz karimkhani
8 Thu, Oct 25, 2018, 5:05 PM
Moodle a mount drive on amazon s3 or any other storage solution
Picture of Daniel Garcia Daniel Garcia
5 Thu, Oct 25, 2018, 1:25 AM
What does "automated backup are already running. Execution delayed"?
Picture of Jerry Lau Jerry Lau
2 Mon, Oct 15, 2018, 4:51 AM
'core_renderer' is taking most of time while loading a page
Picture of Abdul Ghaffar Abdul Ghaffar
7 Thu, Oct 11, 2018, 7:40 PM
Might have found the cause of slowness in DB
Picture of Jerry Lau Jerry Lau
7 Wed, Oct 3, 2018, 5:06 AM
optimize performance
Picture of solmaz naderi solmaz naderi
3 Tue, Oct 2, 2018, 4:30 PM
Can I modify the .cnf files, delete the innodb files and restart?
Picture of Jerry Lau Jerry Lau
1 Mon, Oct 1, 2018, 3:45 AM
What do these stats mean in footer
Picture of Jerry Lau Jerry Lau
7 Fri, Sep 28, 2018, 4:53 AM
Moodle Webservices and AWS ElasticCache(memcached) problem
Picture of Christos Savva Christos Savva
0 Thu, Sep 27, 2018, 4:19 PM
Quizzes are rending Moodle useless :-(
Picture of Jerry Lau Jerry Lau
37 Thu, Sep 27, 2018, 3:22 AM
Speeding up Moodle - reindexing entire database would help?
Picture of Jerry Lau Jerry Lau
6 Wed, Sep 26, 2018, 1:48 AM
from M3.1 to M3.5 : database issue ?
Picture of Michel DENIS Michel DENIS
18 Thu, Sep 20, 2018, 1:49 AM
opcache issue on Moodle 3.4 and PHP 7.0.x
Picture of William Chan William Chan
7 Thu, Sep 6, 2018, 11:40 PM
Moodle increase size
Picture of Yoel Gutierrez Yoel Gutierrez
3 Fri, Aug 31, 2018, 10:09 PM
CDN for beginners
Picture of Hernan O Hernan O
2 Tue, Aug 28, 2018, 10:55 AM
Moodle 3.4 -> 3.5 upgrade time
Picture of sam marshall sam marshall
1 Thu, Aug 23, 2018, 11:03 PM
Can't setup memcached for sessions
Picture of Regina B Regina B
0 Thu, Aug 23, 2018, 10:44 PM
Major problems with Moodledata on NFS
Picture of Albert Ramsbottom Albert Ramsbottom
4 Thu, Aug 23, 2018, 3:19 PM
Slow Load Time When Saving a new Activity or Editing an Existing one
Picture of Ahmed Aly Ahmed Aly
6 Sun, Aug 19, 2018, 6:05 AM
Timing Out
Picture of Steve Hyland Steve Hyland
12 Sat, Aug 11, 2018, 5:07 AM
Hardware requirements for a minimum traffic of concurrent users
Picture of Javier Quinto Javier Quinto
7 Tue, Aug 7, 2018, 12:52 AM