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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.

List of discussions. Showing 100 of 3217 discussions
Status	Discussion	Started by	Last post	Replies	Actions
	Transitioning to SSL network encryption on MySQL servers Locked	Rebecca O'Connell 23 June 2015	James McLean 8 July 2015	4
	Load Test reveals Access Errors - fonts.gstatic.com (v2.8.4) Locked	Constance Horne 23 June 2015	Constance Horne 23 June 2015	3
	Deploying Moodle on HP Proliant Server Locked	Chris Ekin 22 June 2015	Tim Hunt 23 June 2015	5
	IIS Server clustering Locked	Albert Ramsbottom 22 June 2015	Albert Ramsbottom 22 July 2015	7
	mdl_sessions and memcached Locked	jerrett fowler 18 June 2015	James McLean 22 June 2015	3
	V2.8.x - How to delete all course participation details Locked	Constance Horne 18 June 2015	Constance Horne 23 June 2015	2
	Load testing V2.8.x Locked	Constance Horne 18 June 2015	Jeff White 24 June 2015	3
	Is Nested Trigger required to be enabled for Moodle? Locked	Johnny Lo 16 June 2015	Johnny Lo 17 June 2015	2
	Moodle and PHP 7.x Locked	Usman Asar 14 June 2015	Usman Asar 14 June 2015	2
	Hosting & file storage in separate locations Locked	Tony Cunningham 13 June 2015	Jacov Mostovicz 16 June 2015	3
	JavaScript being called early Locked	Tzvi Daum 11 June 2015	Tzvi Daum 13 June 2015	3
	Investigating excessive(?) DB hits Locked	Brad Smith 11 June 2015	Brad Smith 11 June 2015	3
	Events queue huge Locked	Conn Warwicker 5 June 2015	Conn Warwicker 10 June 2015	7
	Moodle slow with admin settings Locked	Federica Marra 4 June 2015	Federica Marra 11 June 2015	3
	Scheduled tasks - Log cleanup Locked	Gerald Albion 4 June 2015	Howard Miller 4 June 2015	1
	Moodle Slow, Resources Great, what could be the problem Locked	Paul Lindgreen 3 June 2015	Paul Lindgreen 4 June 2015	2
	My moodle website is too slow Locked	darajeur darajeur 3 June 2015	fahid hasan 17 June 2015	7
	MUC Locked	Albert Ramsbottom 2 June 2015	Albert Ramsbottom 12 June 2015	8
	Decentralized Course Materials Locked	Calvin Vong 1 June 2015	Rick Jerz 2 June 2015	4
	Moodle Crashing Every Night Locked	Scott Tolan 27 May 2015	Jeff White 29 May 2015	15
	Need cheap moodle hosting provider Locked	deby williams 26 May 2015	Howard Miller 26 May 2015	1
	Contradictory doc on cron jobs for web cluster Locked	Job Céspedes Ortiz 26 May 2015	Howard Miller 26 May 2015	1
	Hosting on site versus Out Sourcing Locked	Paul Langdon 22 May 2015	Visvanath Ratnaweera 23 May 2015	5
	I/O Needs in a Split System Locked	Rick Venuto 14 May 2015	Visvanath Ratnaweera 21 May 2015	9
	Load Testing Locked	Graham Stone 13 May 2015	Michael Hughes 28 June 2016	5
	Moodle very slow on local Windows high end laptop Locked	Michel DENIS 13 May 2015	Michel DENIS 17 May 2015	8
	An update on cache landscape (Linux-based) Locked	Visvanath Ratnaweera 6 May 2015	Albert Ramsbottom 23 June 2015	14
	Moodle Very slow for users who are not administrators Locked	Cristian Matos 5 May 2015	Marcus Green 4 Sept 2015	7
	Moodle Delayed Replication Mirror Site Locked	Zach M. 1 May 2015	jason everling 2 May 2015	7
	Is there a solution to moodle's chat heavyness? Locked	Nuno Pinto 30 Apr 2015	Visvanath Ratnaweera 5 May 2015	5
	quiz records error? Locked	Tzafi Z 30 Apr 2015	Howard Miller 30 Apr 2015	1
	Moodle MySQL overload error Locked	Alejandro Calderón 28 Apr 2015	Alejandro Calderón 6 May 2015	8
	Which one best moodle hosting server in the world ? Locked	Kathir Rajaraman 27 Apr 2015	Fahad Rafiq 6 May 2015	9
	Share us your help and experience Locked	zizo zizo 25 Apr 2015	Usman Asar 1 May 2015	2
	10 Mini-PCs With Pre-Installed Linux Locked	Visvanath Ratnaweera 24 Apr 2015	Visvanath Ratnaweera 18 May 2015	11
	NewRelic RPM & Moodle Errors / Issues Locked	Seth Mengal 20 Apr 2015	James McLean 21 Apr 2015	1
	fatal error with memcache.php Locked	Andy Taggart 20 Apr 2015	Howard Miller 22 Apr 2015	1
	Server Requirement Locked	Mohammad Talat 19 Apr 2015	Seth Mengal 21 Apr 2015	3
	PHP memory Locked	Rama Gundabhat 16 Apr 2015	Rama Gundabhat 16 Dec 2015	18
	Setting memcache as default Locked	Andy Taggart 16 Apr 2015	Andy Taggart 17 Apr 2015	7
	Change filedir folder. Locked	Oh ByeongJoo 14 Apr 2015	Oh ByeongJoo 14 Apr 2015	0
	quiz on moodle 2.4 slow Locked	Maram Alsafarini 14 Apr 2015	Maram Alsafarini 14 Apr 2015	4
	Cron Job questions Locked	Melissa Benson 11 Apr 2015	Deleted user 20 Oct 2016	19
	Moodle system requirements online checking tool for students? Locked	Usman Arshad 8 Apr 2015	kany adrew 15 Apr 2015	5
	Externally hosted database server as backend (Backup) in moodle Locked	Parth Patel 6 Apr 2015	Usman Asar 9 Apr 2015	4
	Question about using Xcache with Moodle 2.8 Locked	Robert Blomeyer 4 Apr 2015	Matteo Scaramuccia 4 Apr 2015	1
	HOW to build a production site "hyper-fast, simple, non-explosive" Locked	fleu risseur 3 Apr 2015	Usman Asar 3 Apr 2015	1
	I AM TERRIFIED : MOODLE IS VERY SLOW ! Locked	fleu risseur 3 Apr 2015	Marcel Matschke 1 June 2017	33
	Maintaining large Log table Locked	Richard Flurey 2 Apr 2015	Zabelle Motte 2 Dec 2016	6
	Moodle site became very slow after upgrading to 2.8.5 Locked	Garamkhand Surendelg 31 Mar 2015	Albert Ramsbottom 3 June 2015	8
	Error: MySQL server has gone away Locked	Maknus Kowalski 30 Mar 2015	Howard Miller 30 Mar 2015	4
	Quiz for moodle 2.2--- documents content no data Locked	Maram Alsafarini 29 Mar 2015	Visvanath Ratnaweera 29 Mar 2015	2
	Re: Active participants (split from New to Moodle can it do?) Locked	Usman Asar 28 Mar 2015	Mary Cooch 30 Mar 2015	7
	Repeated flood of requests causes all database connections to be used up? Locked	Mathew Gancarz 27 Mar 2015	Howard Miller 28 Mar 2015	6
	NFS and Memcached configuration (clustering preparation) Locked	heli g 21 Mar 2015	heli g 24 Mar 2015	4
	Performance issue on dropbox repository's cron Locked	Jordi Pujol-Ahulló 20 Mar 2015	Jordi Pujol-Ahulló 25 Mar 2015	3
	Memcache issues after recent security patches Locked	sam marshall 19 Mar 2015	sam marshall 20 Mar 2015	1
	Cache problem Locked	Wissam Nahas 18 Mar 2015	Howard Miller 18 Mar 2015	1
	problem on the mdl_grade_grades_category moodle 2.8, high cpu use in my server of databases. Locked	Eduardo Miranda 18 Mar 2015	Susan Mangan 27 Aug 2015	3
	Zip Performance in Moodle Locked	Dale Davies 16 Mar 2015	Howard Miller 17 Mar 2015	1
	Moodle application / sql locks Locked	Luis Pinheiro 13 Mar 2015	Visvanath Ratnaweera 13 Mar 2015	1
	Really slow logon Locked	Stuart Hector 11 Mar 2015	Howard Miller 15 Mar 2015	7
	Surface Pro 3 touch pad, not able to move activities Locked	Annette Knobloch 8 Mar 2015	Andrew Lyons 9 Mar 2015	2
	Moodle based on Postgres-XC Locked	David Paniagua Ruano 2 Mar 2015	David Paniagua Ruano 2 Mar 2015	0
	The coming of HTTP/2 Locked	Ken Task 2 Mar 2015	Nadav Kavalerchik 16 Dec 2015	5
	Memcached Moodle site still DB row locking Locked	jerrett fowler 27 Feb 2015	jerrett fowler 3 Mar 2015	6
	installation moodle Locked	joss micheal 26 Feb 2015	joss micheal 27 Feb 2015	7
	Event Monitoring Performance Locked	Michael Hughes 18 Feb 2015	Dirk Meyer 16 Feb 2017	10
	Needs Assesment Locked	Eric Guedegbe 9 Feb 2015	Mary Cooch 10 Feb 2015	3
	Slow response using Chrome when compared to IE - 2.8.3 (Build: 20150202) Locked	Stephen Bloomer 6 Feb 2015	Stephen Bloomer 7 Feb 2015	5
	Newbie ? - Short video clip storage Locked	Tim Edsell 6 Feb 2015	Tim Edsell 6 Feb 2015	0
	Sporadic email delivery times Locked	Nathan Bruley 5 Feb 2015	Nathan Bruley 6 Feb 2015	2
	Moodle 2.7 is very slow Locked	system vim 3 Feb 2015	Visvanath Ratnaweera 3 Feb 2015	1
	MOODLE 2.7 on Yosemite w/ Firefox Locked	Frank Keating 3 Feb 2015	Nicola Taylor 7 Feb 2015	3
	Capture Cards on Moodle Locked	Lawrence Mallari 29 Jan 2015	ryan sanders 29 Jan 2015	1
	Setting Up Memcache with transparent session failover Locked	Jeff White 29 Jan 2015	Jeff White 1 May 2015	2
	Managing the number of tables in SQL databases Locked	Gustavo Monteiro 28 Jan 2015	Gustavo Monteiro 29 Jan 2015	2
	hardware requirements for 500 concurrent users Locked	abdelrhman Al-tawdy 21 Jan 2015	Visvanath Ratnaweera 21 Jan 2015	2
	Slow cronjobs in 2.7 vs 2.6 Locked	Ellio Mourinho 21 Jan 2015	Ellio Mourinho 21 Jan 2015	0
	Working and load very slow my site Locked	gourav gourav 14 Jan 2015	Howard Miller 14 Jan 2015	1
	Hardware Requirement for 65 Con Current Users Locked	Martin Fernandes 14 Jan 2015	Visvanath Ratnaweera 14 Jan 2015	2
	Are memcached cache tests always slower than file cache Locked	Joe Snuffy 14 Jan 2015	Jeff White 20 Jan 2015	8
	How many concurrent users should my hardware support? Locked	Hassan AbdelSabour 5 Jan 2015	Hassan AbdelSabour 22 Jan 2015	10
	Performence problem in 2.4 Locked	Sigal Rashba 4 Jan 2015	Howard Miller 5 Jan 2015	1
	Unable to edit quiz after upgrade from 2.7.3+ to 2.8.1+ Locked	Joe Chapman 3 Jan 2015	Ewout ter Haar 18 Aug 2015	42
	cron job on a hosted site Locked	Alex Delaforce 27 Dec 2014	Alex Delaforce 31 Dec 2014	6
	2.6.6 custom search Improvement Locked	José Puente Fuentes 20 Dec 2014	José Puente Fuentes 31 Dec 2014	2
	Dealing with "login storm" Locked	Colin Matheson 18 Dec 2014	ryan sanders 8 Jan 2015	3
	Saving quiz caching takes a long time and crashes Locked	Michael Ko 17 Dec 2014	Michael Ko 21 Jan 2015	12
	Cron job - 2 web servers - different schedule Locked	Job Céspedes Ortiz 17 Dec 2014	Andrew Lyons 17 Dec 2014	1
	2.8.1 production server Locked	José Puente Fuentes 15 Dec 2014	José Puente Fuentes 20 Dec 2014	4
	longest Latency Locked	Paul Wakelam 7 Dec 2014	Paul Wakelam 7 Dec 2014	0
	Very slow course participation reports Locked	Josef Fortier 5 Dec 2014	Jay Liotta 17 Mar 2015	3
	Migrating from a linux to a windows server Locked	Eric Miletich 2 Dec 2014	Stuart Hector 11 Mar 2015	11
	add a link in administration with php code Locked	abbaspour abbaspour 30 Nov 2014	abbaspour abbaspour 30 Nov 2014	0
	Weird message in php error log file Locked	Mari Cruz García 27 Nov 2014	Mari Cruz García 5 Dec 2014	4
	Special Characters strange behavior after update to 2.8.1 Locked	Deleted user 26 Nov 2014	Greg Rodenhiser 15 Jan 2015	1
	Heavy IO problem Locked	Ryan-Neal Mes 25 Nov 2014	Ryan-Neal Mes 27 Nov 2014	8
	Moodle course page slow only with Firefox Locked	Hittesh Ahuja 19 Nov 2014	Hittesh Ahuja 9 Feb 2015	12
	Will upgrading php and mysql Damage Moodle 2.5? Locked	Miki Alliel 18 Nov 2014	Miki Alliel 18 Nov 2014	2