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.

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List of discussions. Showing 100 of 3001 discussions
Discussion	Started by	Last post	Replies
What Size Should ramdisk/tmpfs Be for 'temp' and 'cache' ? Locked	Paul L 5 Mar 2019	Howard Miller 20 Mar 2019	11
Moodle Performance Issue with 4 users Locked	Paul Young 15 Mar 2019	Paul Young 20 Mar 2019	22
XAMPP on Windows Server 2012 running in production Locked	Michael Hankins 9 Mar 2019	Ken Task 16 Mar 2019	19
Can anyone share a performant Redis cache configuration? Locked	wz z 13 Mar 2019	Howard Miller 13 Mar 2019	2
Data Privacy and Large Moodles Locked	David Dixon 8 Mar 2019	David Dixon 12 Mar 2019	2
10K Users - 2 hours Exam Locked	uk nites 10 Mar 2019	Séverin Terrier 12 Mar 2019	2
Using config.php for configuration management -> performance impact? Locked	Alistair Spark 11 Jan 2019	Alistair Spark 6 Mar 2019	6
The right Database to use Locked	Hal MacLean 26 Feb 2019	Hal MacLean 28 Feb 2019	10
JMeter Moodle Test Locked	Richard Brown 26 Feb 2019	Richard Brown 26 Feb 2019	0
Web Access of moodle console is slow & www-root consuming 100% CPU Utilization. Locked	Mohd Hassan Uddin 25 Feb 2019	Mohd Hassan Uddin 25 Feb 2019	0
Apache CPU High Usage when opening tasks Locked	Marc Celeiro 17 Jan 2019	Ramzi Hosni 22 Feb 2019	21
Moodle creating Excessive I/Os Locked	Greg Merriman 21 Feb 2019	Andrew Lyons 22 Feb 2019	3
moodle in azure Locked	MARIA CENTENO 19 Feb 2019	Mathew Gancarz 21 Feb 2019	7
performance with mysqltuner Locked	mimi nom 19 Feb 2019	Ken Task 20 Feb 2019	2
Error communicating with server Locked	Randy Foster 19 Feb 2019	Randy Foster 19 Feb 2019	0
NFS for dataroot Locked	Keith Weinheimer 7 Dec 2018	chaitanya varanasi 15 Feb 2019	13
Overriding server timeout parameter can create chaos Locked	Pierre Raynaud 12 Feb 2019	Andrew Lyons 14 Feb 2019	3
Moodle deployment on cloud recommended specifications Locked	Pushpendra Vishal Kaushal 13 Feb 2019	Visvanath Ratnaweera 13 Feb 2019	1
Moodle crashing with "Too many open files" Locked	Debbie Unterseher 7 Feb 2019	Debbie Unterseher 12 Feb 2019	2
Exclude webservice user from Moodle logs Locked	Richard van Iwaarden 7 Feb 2019	Richard van Iwaarden 7 Feb 2019	0
Email sent via email_to_user() needs to be queued for background sending Locked	Chris Yust 2 Feb 2019	Chris Yust 5 Feb 2019	7
Moodle System Requirements for 500 Active Concurrent User Locked	Daoud El Gharib 28 Jan 2019	Visvanath Ratnaweera 31 Jan 2019	6
Student upload issues only on certain network Locked	Jessica Dawson 24 Jan 2019	Ken Task 26 Jan 2019	7
Timeouts during an exam Locked	Danishka Navin 12 Jan 2019	Howard Miller 21 Jan 2019	13
Moodle server resources for 1000+ users Locked	Redzy Red 16 Jan 2019	Ken Task 17 Jan 2019	5
Slow backup and restore of small quizes where there's a lot of question in course Locked	Yedidia Klein 13 Dec 2018	Jerry Lau 13 Dec 2018	1
Requirement for Migrating My Moodle School Locked	Arnold Yu 10 Dec 2018	Visvanath Ratnaweera 11 Dec 2018	12
Can Redis Shared Application cache run on local nodes? Locked	Jan Derriks 10 Nov 2018	Jan Derriks 7 Dec 2018	5
'core_renderer' is taking most of time while loading a page Locked	Abdul Ghaffar 11 Oct 2018	Visvanath Ratnaweera 4 Dec 2018	7
How to test performance? Locked	Paul L 24 Nov 2018	Jan Derriks 1 Dec 2018	3
Quizzes are rending Moodle useless :-( Locked	Jerry Lau 27 Sep 2018	Jerry Lau 25 Nov 2018	37
MCQ with random question performance issue Locked	Mihir J 22 Nov 2018	Tim Hunt 23 Nov 2018	3
Hardware requirement for my setup Locked	Muhammad Abdullah Ijaz 22 Nov 2018	Visvanath Ratnaweera 23 Nov 2018	2
Recommended specs - new moodle installation Locked	Basti Bunz 14 Nov 2018	Ralf Hilgenstock 19 Nov 2018	2
Anyone running HTTP/2? Locked	Rex Lorenzo 14 Nov 2018	Rex Lorenzo 17 Nov 2018	7
PHP-cgi.exe 100% load CPU one core Locked	István Farkas 9 Nov 2018	István Farkas 11 Nov 2018	6
Big jumps in mysql memory usage Locked	David Garden 7 Nov 2018	Howard Miller 8 Nov 2018	7
SCORM Package breaks from 500 errors on image files? Locked	David Garden 5 Nov 2018	Matteo Scaramuccia 6 Nov 2018	1
Questions about load balancing methods and the session cache Locked	Andrew Howe 31 Oct 2018	Marcus Green 4 Nov 2018	6
Uploaded files have long post-processing time Locked	Rex Lorenzo 3 Nov 2018	Rex Lorenzo 3 Nov 2018	1
Course-level backup on large-ish instance Locked	Mark van Hoek 30 Oct 2018	Susan Mangan 1 Nov 2018	2
moodle for digital exam for about 70 students Locked	sanaz karimkhani 25 Oct 2018	sanaz karimkhani 31 Oct 2018	8
Moodle a mount drive on amazon s3 or any other storage solution Locked	Daniel Garcia 25 Oct 2018	Daniel Garcia 31 Oct 2018	5
How to test performance, with and without Wincache Locked	Paul L 31 Oct 2018	Paul L 31 Oct 2018	0
Hardware for 100 concurrent users Locked	Mohammad Hallak 27 Oct 2018	Howard Miller 29 Oct 2018	10
What does "automated backup are already running. Execution delayed"? Locked	Jerry Lau 15 Oct 2018	Visvanath Ratnaweera 21 Oct 2018	2
What do these stats mean in footer Locked	Jerry Lau 28 Sep 2018	AL Rachels 21 Oct 2018	7
Help with Windows Moodle Performance Locked	J P 14 Dec 2017	Paul L 13 Oct 2018	3
opcache issue on Moodle 3.4 and PHP 7.0.x Locked	William Chan 6 Sep 2018	William Chan 12 Oct 2018	7
File vs Database for Sessions, moodle 3.3 Locked	Paul L 22 Jun 2018	Paul L 11 Oct 2018	6
Might have found the cause of slowness in DB Locked	Jerry Lau 3 Oct 2018	Visvanath Ratnaweera 11 Oct 2018	7
Can I modify the .cnf files, delete the innodb files and restart? Locked	Jerry Lau 1 Oct 2018	Howard Miller 1 Oct 2018	1
Moodle Webservices and AWS ElasticCache(memcached) problem Locked	Christos Savva 27 Sep 2018	Christos Savva 27 Sep 2018	0
Speeding up Moodle - reindexing entire database would help? Locked	Jerry Lau 26 Sep 2018	Howard Miller 27 Sep 2018	6
Moodle increase size Locked	Yoel Gutierrez 31 Aug 2018	Yoel Gutierrez 26 Sep 2018	3
from M3.1 to M3.5 : database issue ? Locked	Michel DENIS 20 Sep 2018	Michel DENIS 25 Sep 2018	18
Why is my small Moodle setup maxing out my server's 1 GB memory limit? Locked	Ellen Spertus 3 Apr 2018	Francisco Lemus 22 Sep 2018	23
Using AWS for Moodle Locked	Edilberto Solis, Jr. 3 Aug 2017	Greg Rudl 13 Sep 2018	10
CDN for beginners Locked	H TNG 28 Aug 2018	Mathew Gancarz 30 Aug 2018	2
Slow Load Time When Saving a new Activity or Editing an Existing one Locked	Ahmed Aly 19 Aug 2018	Ahmed Aly 27 Aug 2018	6
Major problems with Moodledata on NFS Locked	Albert Ramsbottom 23 Aug 2018	Visvanath Ratnaweera 25 Aug 2018	4
Moodle 3.4 -> 3.5 upgrade time Locked	sam marshall 23 Aug 2018	sam marshall 24 Aug 2018	1
Can't setup memcached for sessions Locked	Regina B 23 Aug 2018	Regina B 23 Aug 2018	0
Dockerized Moodle - Performance Locked	Nahum Lipkunsky 16 Feb 2018	Andrew Lyons 14 Aug 2018	47
Timing Out Locked	Steve Hyland 11 Aug 2018	Rick Jerz 13 Aug 2018	12
Hardware requirements for a minimum traffic of concurrent users Locked	Javier Quinto 7 Aug 2018	Ken Task 11 Aug 2018	7
Need a script that would display a node number of a load balanced system - 5 nodes Locked	Ken Task 27 Jul 2018	Andreas Panagiotopoulos 9 Aug 2018	15
Is there a way to estimate actual number of concurrent Moodle users? Locked	Joe Schmoe 22 Nov 2017	A. S. 5 Aug 2018	3
moodle memcached being used for sessions - confused by what I see Locked	John Joubert 20 Jul 2018	John Joubert 3 Aug 2018	5
Refresh Mod Calendar Events Task - Slow Locked	Grady Miller 2 Mar 2018	Russell Morriss 1 Aug 2018	6
How to replicate in moodle? Locked	Danishka Navin 15 Jul 2018	Tim Hunt 1 Aug 2018	10
grunt css Locked	Дмитрий Пименов 31 Jul 2018	Дмитрий Пименов 31 Jul 2018	3
Server hardware for 1000 concurrent users Locked	Jkail MOENE 31 Jul 2018	Albert Ramsbottom 31 Jul 2018	1
Groups and performance Locked	Maribel Rosich 27 Jul 2018	Howard Miller 27 Jul 2018	1
Micro Focus for load testing Locked	Howard Miller 25 Jul 2018	Howard Miller 25 Jul 2018	0
Site home very slow, 39 seconds Locked	Albert Ramsbottom 18 Jul 2018	Howard Miller 25 Jul 2018	12
Advice on server to run multiple Moodle sites Locked	Jason Lane 11 Jul 2018	Paul Raper 16 Jul 2018	9
This is exciting as I am back, NFS question Locked	Albert Ramsbottom 9 Jul 2018	Matteo Scaramuccia 10 Jul 2018	8
Big Blue Button and number of users Locked	Javier Tejera 29 Jun 2018	Albert Ramsbottom 9 Jul 2018	3
What may cause a coding error - failed to unserialise data from file. Either failed to read, or ... Locked	Sandy Stockholm 14 Jun 2018	Albert Ramsbottom 9 Jul 2018	2
Problems crashing on the server Locked	Franky Vallori 29 Jun 2018	Albert Ramsbottom 9 Jul 2018	7
Event monitoring Locked	Helen Brennagh 4 Jul 2018	Helen Brennagh 9 Jul 2018	2
Moodle 3.2 server unable to load 500 users Locked	Vishwa H 16 Jun 2018	Usman Asar 23 Jun 2018	11
Moodle SqlDump is 2GB, but MySQL database is only a few Mb... ?? Locked	Tom Smith 15 Jun 2018	Ken Task 20 Jun 2018	10
VPS, too high CPU usage with just one request Locked	Oscar Martin Martinez 11 May 2018	Rick Jerz 15 Jun 2018	21
about the top command Locked	mimi nom 7 Jun 2018	mimi nom 13 Jun 2018	8
Moodle slow for the first visitor then quick thereafter Locked	Walter Buchanan 3 Oct 2017	Nahed Alquwez 6 Jun 2018	24
Server specs Locked	Ahmed Nouh 23 May 2018	Visvanath Ratnaweera 2 Jun 2018	9
JMeter "Out of Memory” Failure Locked	Jerry Lau 31 May 2018	Jerry Lau 31 May 2018	2
Moodle installation in intel itanium Windows 2003 system? Locked	Ramesh Nair 23 May 2018	Visvanath Ratnaweera 30 May 2018	9
Settings for memcache for sessions cache - can't find a moodle doc Locked	John Joubert 30 May 2018	John Joubert 30 May 2018	1
Moodle clustering on Windows servers Locked	Payman Zafar 21 May 2018	Payman Zafar 29 May 2018	5
Has Anyone Used mysqlslap for DB Performance Testing? Locked	Ken Task 27 May 2018	Ken Task 27 May 2018	2
Status indicator light for moodlebox on raspberry pi 3b+ Locked	Cade Dopp 21 May 2018	AL Rachels 23 May 2018	6
A starndardized quiz to benchmark a Moodle installation? Locked	Visvanath Ratnaweera 21 May 2018	Tim Hunt 23 May 2018	4
Windows OS : Which version supported (2003/2008/2012) Locked	Ramesh Nair 15 May 2018	Ramesh Nair 21 May 2018	7
High Load Avarage Locked	Rodrigo Santin 18 May 2018	Howard Miller 20 May 2018	3
Load many course categories faster Locked	Felipe Dos Santos 16 May 2018	Felipe Dos Santos 18 May 2018	6
Nginx or Apache with PHP 7.1.8? Locked	Jerry Lau 15 May 2018	Ken Task 15 May 2018	1
Roadmap for deploying solution for 2000-4000 students Locked	Isaac Marecheau 10 May 2018	Howard Miller 14 May 2018	6

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