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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DiscussionStarted byRepliesLast post
Login for anyone takes a long time - after upgrade Picture of David White David White 6 Guillermo Madero
Fri, May 6, 2016, 4:54 AM
Preferred php handler for large moodle site Picture of Farhan Karmali Farhan Karmali 5 Tim Hunt
Fri, May 6, 2016, 1:04 AM
How to load balancing moodle Picture of Doan Dung Doan Dung 5 Jeff White
Wed, May 4, 2016, 3:12 AM
'smallest moodle 2.3 server' Picture of George Varghese George Varghese 5 James McLean
Mon, May 2, 2016, 8:59 AM
trying to preview in a proxy but getting some weird behavior. Is this normal of a proxy? me Billy Zwiener 0 Billy Zwiener
Sat, Apr 30, 2016, 11:59 AM
How might I go about purging huge tables/ can I delete quiz attempts PAST a certain date only? me Billy Zwiener 3 Tim Hunt
Thu, Apr 28, 2016, 6:11 AM
Crashing under increased activity... But not a lot ... 20 users maybe at the same time? me Billy Zwiener 6 Billy Zwiener
Wed, Apr 27, 2016, 9:35 AM
Blank page returned when i access by admin Picture of Doan Dung Doan Dung 2 Doan Dung
Wed, Apr 27, 2016, 9:09 AM
MySQL Database Master/slave replication and other thoughts Picture of Michael Hughes Michael Hughes 14 Dmitriy Kuzevanov
Tue, Apr 26, 2016, 5:50 PM
Moodle 2.6 Apache Event MPM Picture of Juan C. Juan C. 0 Juan C.
Tue, Apr 26, 2016, 6:36 AM
Moodle data folder on a shared ntfs volume Wellingtonia Tree Heather P 13 Ken Task
Tue, Apr 26, 2016, 12:09 AM
When to build a server cluster for Moodle (with examples)? Picture of Visvanath Ratnaweera Visvanath Ratnaweera 12 Luis de Vasconcelos
Mon, Apr 25, 2016, 9:19 PM
Adelani Adekunle - Moodle made my System slow Picture of Adelani Adekunle Adelani Adekunle 2 Usman Asar
Fri, Apr 22, 2016, 7:14 PM
How have people spec'd thier environment? Picture of John Rickard John Rickard 1 Heather P
Wed, Apr 20, 2016, 11:09 PM
Performance of Moodle site Picture of Rajakumar Jillella Rajakumar Jillella 2 Visvanath Ratnaweera
Wed, Apr 20, 2016, 3:39 PM
Cron Job questions Picture of Melissa Benson Melissa Benson 11 Blair F.
Fri, Apr 15, 2016, 1:17 AM
Disk space, duplicate? Picture of Chris Swaffield Chris Swaffield 3 Albert Ramsbottom
Thu, Apr 14, 2016, 9:12 PM
Microsoft Azure Encyption You either love it or you hate it Albert Ramsbottom 4 Albert Ramsbottom
Thu, Apr 14, 2016, 4:14 PM
Advice on preferred hardware setup for upgrade and cloud use Picture of Jerry Lau Jerry Lau 9 Visvanath Ratnaweera
Sat, Apr 9, 2016, 11:08 PM
Amazon AWS You either love it or you hate it Albert Ramsbottom 12 Albert Ramsbottom
Fri, Apr 8, 2016, 4:36 PM
Very Large Moodle Installation Picture of Greg Shaw Greg Shaw 4 Albert Ramsbottom
Wed, Apr 6, 2016, 8:48 PM
Filesystem recommendations for cross-network HA setup? Picture of Brad Smith Brad Smith 20 Albert Ramsbottom
Wed, Apr 6, 2016, 8:28 PM
How do I prune mdl_log table? Picture of Sean McKay Sean McKay 10 Mark Sharp
Wed, Apr 6, 2016, 5:10 PM
High CPU when Loading SCORM (in the deep end) Picture of Simon Harbinson Simon Harbinson 8 Visvanath Ratnaweera
Wed, Apr 6, 2016, 3:19 PM
Nginx + Moodle configuration tips Picture of Jon Langevin Jon Langevin 5 Howard Miller
Sun, Mar 27, 2016, 6:51 PM
Moodle 2.9.4 Poor Performance as Admin user Picture of Gus Hagelberg Gus Hagelberg 7 Raju Adla
Thu, Mar 10, 2016, 2:46 PM
system monitoring Picture of dima maksoud dima maksoud 2 dima maksoud
Thu, Mar 10, 2016, 1:41 PM
The site is getting slower and slower for admin and teachers? Picture of Frankle Lee 李智高 Frankle Lee 李智高 8 Visvanath Ratnaweera
Wed, Mar 9, 2016, 6:28 AM
Copying Production Moodledata to Dev Brought Down Production. Picture of Jeff White Jeff White 7 Jeff White
Mon, Mar 7, 2016, 11:01 PM
Moodle 2 is VERY SLOW - Staff are not happy! Picture of Michael Dean Michael Dean 20 Raju Adla
Mon, Mar 7, 2016, 2:57 PM
Fallview Capital - Hardware issues with Moodle Picture of Marty Mittelman Marty Mittelman 2 Usman Asar
Sun, Mar 6, 2016, 10:44 PM
Moodle Clustering Picture of Jay Sharpe Jay Sharpe 25 Mikko K
Thu, Mar 3, 2016, 8:51 PM
Moving from Windows to Solaris Picture of Pedro Martins De Torre Pedro Martins De Torre 6 Howard Miller
Thu, Mar 3, 2016, 8:22 PM
Performance of the Assignment tool Tim at Lone Pine Koala Sanctuary Tim Hunt 0 Tim Hunt
Tue, Mar 1, 2016, 1:23 AM
Moodle 3 - Recent conversations Picture of mimi nom mimi nom 4 Andrew Nicols
Sun, Feb 28, 2016, 7:13 PM
Moodle & PHP 7.0 (RC4) - Performance Retake Picture of Usman Asar Usman Asar 10 Usman Asar
Sat, Feb 27, 2016, 12:28 AM
Moodle Connection Time Out Issue Picture of N B N B 6 C Behan
Fri, Feb 26, 2016, 7:44 PM
How many cache lock instances must be created when caching with memcached? Picture of David Ordóñez David Ordóñez 4 Paul Verrall
Fri, Feb 26, 2016, 7:09 PM
my web very slow Picture of mo1 jo mo1 jo 4 jen baker
Thu, Feb 25, 2016, 2:25 PM
Moodle on Windows/IIS/MS SQL - known issues ? Picture of Angelin Lalev Angelin Lalev 23 Visvanath Ratnaweera
Sun, Feb 21, 2016, 4:18 AM
Need help understanding XHProf analysis Picture of Alexandre Leveille Alexandre Leveille 1 Tim Hunt
Wed, Feb 17, 2016, 6:15 AM
Munin plugin for Moodle Picture of Ruslan Kabalin Ruslan Kabalin 19 Arnaud TROUVE
Mon, Feb 15, 2016, 8:23 PM
Moodle 3.0 very slow on IIS Picture of josh vonhauger josh vonhauger 3 Howard Miller
Mon, Feb 15, 2016, 6:19 PM
Moodle disconnects during chat Picture of Teresa Fryer Teresa Fryer 2 Visvanath Ratnaweera
Sat, Feb 13, 2016, 4:13 AM
Why is 3.0 running so slow Clint Clinton Randolph 6 Ken Task
Fri, Feb 12, 2016, 6:29 AM
To host or not to host a moodle site Picture of Teresa Fryer Teresa Fryer 12 Rick Jerz
Thu, Feb 11, 2016, 10:17 PM
Moodle hangs while trying to view one test results Picture of Gedas Liugas Gedas Liugas 1 Howard Miller
Thu, Feb 11, 2016, 10:07 PM
Any easy way to get notified if the cron is not running? Picture of Rachel Martin Rachel Martin 6 Visvanath Ratnaweera
Tue, Feb 9, 2016, 11:47 PM
25000 users cohort sync Picture of Susana L. Susana L. 1 Mark Sharp
Wed, Feb 3, 2016, 6:11 PM
Moodle database Mysql connection/stability problem Picture of Proyectos Moodle Proyectos Moodle 1 Visvanath Ratnaweera
Wed, Feb 3, 2016, 6:32 AM
Rebuilding The Moodle Database Question Picture of Steven P. Steven P. 2 Howard Miller
Wed, Jan 27, 2016, 6:21 PM
Moodle freeze Picture of Susana L. Susana L. 5 Susana L.
Mon, Jan 25, 2016, 8:22 PM
Current Picture of Cesar Almanza Cesar Almanza 4 Cesar Almanza
Fri, Jan 22, 2016, 12:13 AM
Redundant Moodle Application Picture of Matt Polaniecki Matt Polaniecki 3 Marcus Green
Thu, Jan 21, 2016, 9:58 PM
Sessions in Database and memcached Picture of Colin Misbach Colin Misbach 2 Colin Misbach
Thu, Jan 21, 2016, 12:51 AM
New Moodle Slow saving grade changes Picture of Jason Touw Jason Touw 23 Jason Touw
Wed, Jan 20, 2016, 11:03 PM
Concurrent user policy Picture of rahul borate rahul borate 5 Usman Asar
Wed, Jan 20, 2016, 6:52 PM
Your advice and experience is highly appreciated related to moodle speed Picture of zizo zizo zizo zizo 8 Usman Asar
Wed, Jan 20, 2016, 4:29 AM
Another "portable Moodle"? (Ocean: The Linux Web Server That Fits in Your Pocket) Picture of Visvanath Ratnaweera Visvanath Ratnaweera 0 Visvanath Ratnaweera
Tue, Jan 19, 2016, 10:13 PM
Bulk User Action - Problem Download Users Picture of Proyectos Moodle Proyectos Moodle 0 Proyectos Moodle
Tue, Jan 19, 2016, 9:14 PM
Has Moodle become thrifty? Picture of Visvanath Ratnaweera Visvanath Ratnaweera 22 Visvanath Ratnaweera
Sun, Jan 10, 2016, 4:16 AM
Server Configuration Picture of Tarek Raslan Tarek Raslan 2 Usman Asar
Fri, Jan 8, 2016, 2:15 AM
Moodledata S3 project Picture of Eduardo Kraus Eduardo Kraus 1 Howard Miller
Sat, Jan 2, 2016, 9:40 PM
How to simulate user do quiz multi choice use Jmeter ! Picture of Tran The A n Tran The A n 19 Jan Derriks
Sun, Dec 27, 2015, 10:32 PM
jMeter and Quizzes Picture of Jason Cameron Jason Cameron 6 Jan Derriks
Sun, Dec 27, 2015, 10:28 PM
Basic starting help ... Picture of Pekka Harmoinen Pekka Harmoinen 3 Visvanath Ratnaweera
Mon, Dec 21, 2015, 11:06 PM
dcachesize on server going high on my server and causing server problems me Billy Zwiener 2 Billy Zwiener
Mon, Dec 21, 2015, 10:17 PM
PHP memory Picture of Rama Gundabhat Rama Gundabhat 18 Rama Gundabhat
Wed, Dec 16, 2015, 11:22 PM
The coming of HTTP/2 Picture of Ken Task Ken Task 5 Nadav Kavalerchik
Wed, Dec 16, 2015, 4:12 AM
Frequent internal server 500 errors - adding quiz, printing reports Picture of Farhan Karmali Farhan Karmali 0 Farhan Karmali
Tue, Dec 15, 2015, 3:31 AM
New (and free) uptime monitoring tool Edu Labs Colombia Juan Gabriel Edu Labs 0 Juan Gabriel Edu Labs
Thu, Dec 10, 2015, 8:31 AM
Recommend Settings Amazon AWS (Managed by Cloudways) Picture of Seth Mengal Seth Mengal 6 Seth Mengal
Wed, Dec 9, 2015, 9:47 PM
Many small videos in courses Picture of Sonja Sperber Sonja Sperber 0 Sonja Sperber
Wed, Dec 9, 2015, 1:43 AM
Moodle performance vs. large courses Picture of Callahan Harry Callahan Harry 7 Tim Hunt
Tue, Dec 8, 2015, 4:21 PM
Moodle Slow Page Loads - PHP running preg_match_all() for 30+ seconds Picture of Andy Sayler Andy Sayler 2 Andy Sayler
Sat, Dec 5, 2015, 5:39 AM
Ideal Server Specs Picture of Stacy Rempel Stacy Rempel 5 Visvanath Ratnaweera
Sat, Dec 5, 2015, 3:52 AM
Moodle slow after upgrade to 2.9.3+ Picture of Ju Groen Ju Groen 1 Visvanath Ratnaweera
Sat, Dec 5, 2015, 2:11 AM
filling up drive Picture of james Jones james Jones 6 Visvanath Ratnaweera
Sat, Dec 5, 2015, 2:04 AM
Moodle downgrade Picture of Daniel Cheow Daniel Cheow 2 Daniel Cheow
Thu, Dec 3, 2015, 3:52 PM
Hardware ( server ) specs for 2000 users Picture of ahmed elgendey ahmed elgendey 3 Visvanath Ratnaweera
Thu, Dec 3, 2015, 2:39 AM
Moodle Performance Problems (split) Picture of Pupil Senpro Pupil Senpro 12 Pupil Senpro
Wed, Dec 2, 2015, 6:14 PM
Set Up Memcached and Memcache for Windows 2008 and IIS Picture of Paul L Paul L 4 Alok Garg
Wed, Dec 2, 2015, 12:50 PM
Same/Different Moodle courses Sunny SS Khew 1 Visvanath Ratnaweera
Tue, Dec 1, 2015, 11:23 PM
1000 concurrent users Mexican Tux Enrique Martinez Roldan 12 Howard Miller
Thu, Nov 26, 2015, 5:47 PM
apache is eating all the CPU, 0% idle Picture of Eslam Gamie Eslam Gamie 23 Howard Miller
Thu, Nov 26, 2015, 5:43 PM
Improve Moodle performance Floyd Saner - Tail of the Dragon, U.S. 129, NC Floyd Saner 5 Visvanath Ratnaweera
Wed, Nov 25, 2015, 6:02 PM
Cloudflare configuration on Moodle.org Picture of Cathal O'Riordan Cathal O'Riordan 8 Matthew Spurrier
Tue, Nov 24, 2015, 9:17 AM
Moodle 2.9 on WAMP Picture of Gavriel Goidel Gavriel Goidel 1 Tim Hunt
Tue, Nov 24, 2015, 12:47 AM
Memcache user sessions You either love it or you hate it Albert Ramsbottom 10 Rodrigo Carte
Mon, Nov 23, 2015, 7:21 AM
Moodle on shared hosting Picture of Nived Narayanan Nived Narayanan 8 Visvanath Ratnaweera
Fri, Nov 20, 2015, 4:24 AM
Performance issues Picture of Sonja Sperber Sonja Sperber 10 Paul Verrall
Fri, Nov 20, 2015, 12:43 AM
Server crash during chat wtih 2 other persons Moodle 2.4.3 Picture of Gary Lebowitz Gary Lebowitz 9 Gary Lebowitz
Fri, Nov 13, 2015, 1:55 PM
Moodle Keeps Crashing Picture of Graham Stone Graham Stone 4 Graham Stone
Wed, Nov 11, 2015, 10:46 PM
Go Daddy! (Where to?) Picture of Visvanath Ratnaweera Visvanath Ratnaweera 23 Visvanath Ratnaweera
Sat, Nov 7, 2015, 12:42 AM
User site capacities questions Picture of Gio Glez Gio Glez 27 Visvanath Ratnaweera
Wed, Nov 4, 2015, 7:30 PM
Where is the keep log files for... Wellingtonia Tree Heather P 2 Heather P
Fri, Oct 30, 2015, 7:27 PM
Moodle Hardware for 10,000 users and 300 users concurrent(at the same time) Picture of craig dsouza craig dsouza 11 Usman Asar
Fri, Oct 30, 2015, 7:13 PM
Moodle web servers locking up Picture of Hittesh Ahuja Hittesh Ahuja 12 Visvanath Ratnaweera
Thu, Oct 29, 2015, 4:04 PM
"recent conversations" screen slow to load Picture of David Rogers David Rogers 5 David Rogers
Thu, Oct 29, 2015, 5:45 AM
What to cache with MemCached Picture of curt bixel curt bixel 19 Visvanath Ratnaweera
Tue, Oct 27, 2015, 7:15 PM
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