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 2652 discussions
  Discussion Started by Replies Last post Created  
Exporting large logs to Excel causes CPU spike and server unresponsiveness
Picture of Trevar Pearce Trevar Pearce
4 Thu, Sep 24, 2015, 6:36 AM
can not open recent msg history
Picture of Serg Tolpygin Serg Tolpygin
0 Wed, Sep 16, 2015, 8:13 PM
lImit to number or uses in moodle 2.9 NOT concurrent users, just total users
Picture of Roger Saffle Roger Saffle
2 Tue, Sep 15, 2015, 9:36 AM
1200 users
Picture of Michael Shea Michael Shea
6 Mon, Sep 14, 2015, 5:52 PM
Expensive SQL queries when logging in
Picture of Montai Settapokin Montai Settapokin
2 Sun, Sep 13, 2015, 12:29 AM
What is the impact of not keeping Moodle log files for more than 3 months?
Picture of Heather P Heather P
0 Fri, Sep 11, 2015, 11:12 PM
SCORM flash too slow
Picture of René Alvarez René Alvarez
5 Fri, Sep 11, 2015, 12:19 AM
Recommend Settings Amazon AWS (Managed by Cloudways)
Picture of Seth Mengal Seth Mengal
6 Thu, Sep 10, 2015, 6:28 PM
2.9.1 Huge Memory Usage when first logging in
Picture of Phil Loaiza Phil Loaiza
8 Fri, Sep 4, 2015, 9:36 PM
Moodle website loading very slow
Picture of Rajakumar Jillella Rajakumar Jillella
1 Fri, Sep 4, 2015, 3:13 PM
Memcache issues in a clustered environment
Picture of Matthew Davidson Matthew Davidson
3 Thu, Sep 3, 2015, 11:30 PM
Load Testing Moodle 2.9 with 250 concurrent users
Picture of Montai Settapokin Montai Settapokin
3 Mon, Aug 31, 2015, 9:35 PM
Evaluation page doesn't work after update 2.4 to 2.9
Picture of Enzo Cappelluti Enzo Cappelluti
1 Mon, Aug 31, 2015, 4:31 PM
Moodle freezing when multiple users are logged in and running a SCORM Package
Picture of Mike Winslow Mike Winslow
11 Thu, Aug 27, 2015, 11:51 PM
Getting 404 errors when load testing Moodle 2.9 with only 10 concurrent users
Picture of Montai Settapokin Montai Settapokin
10 Thu, Aug 27, 2015, 10:19 AM
Solaris or not Solaris
Picture of Frank Lister Frank Lister
7 Fri, Aug 21, 2015, 3:20 AM
Slow video upload - assignment feedback files
Picture of David Conrad David Conrad
2 Wed, Aug 19, 2015, 12:19 AM
New setup questions
Picture of Chris Cormier Chris Cormier
16 Tue, Aug 18, 2015, 9:54 PM
Any reason not to virtualize Moodle on Hyper-v
Picture of Ed Henzel Ed Henzel
9 Thu, Aug 13, 2015, 8:50 PM
Filesize Descrepancies On Server
Picture of Mason Colbert Mason Colbert
0 Thu, Aug 13, 2015, 1:06 AM
splitting database to Amazon S3
Picture of graham green graham green
12 Wed, Aug 12, 2015, 3:54 PM
CloudFlare setup with Moodle
Picture of Cathal O'Riordan Cathal O'Riordan
19 Fri, Aug 7, 2015, 11:04 PM
Memcached possible architecture issue
Picture of Valery Fremaux Valery Fremaux
1 Fri, Aug 7, 2015, 4:51 AM
Load balancer problem with 100 simultaneous users taking a quiz
Picture of Don Hinkelman Don Hinkelman
28 Tue, Aug 4, 2015, 1:58 PM
Multi-threaded course backup using multi-threaded file compression
Picture of Konrad Lorinczi Konrad Lorinczi
4 Thu, Jul 30, 2015, 1:24 AM
Just starting
Picture of Windell Frederick Rebong Windell Frederick Rebong
11 Wed, Jul 29, 2015, 3:59 PM
Chrome Device issues (v2.4.0)
Picture of Constance Horne Constance Horne
1 Wed, Jul 15, 2015, 1:03 AM
Login 1000 student at a time on one quiz
Picture of Lalit Thakur Lalit Thakur
35 Tue, Jul 14, 2015, 2:04 PM
deleting archived courses from moodledata
Picture of Steven Silvern Steven Silvern
11 Tue, Jul 14, 2015, 2:21 AM
Moodle Cloud (split from ancient thread)
Picture of Samantha Gartner Samantha Gartner
0 Mon, Jul 13, 2015, 10:30 AM
Moodle 2.8.1. Server Cluster configuration. Apache Crashing with "exit signal Bus error (7)"
Picture of José Antonio Omedes Capdevila José Antonio Omedes Capdevila
20 Mon, Jul 6, 2015, 10:27 PM
Memcached
Picture of Mr Blue Mr Blue
7 Mon, Jul 6, 2015, 5:58 PM
ClamAV on Centos7
Picture of Web HEP Web HEP
8 Wed, Jul 1, 2015, 5:53 PM
Moodle Resources
Picture of Shyam S Shyam S
8 Fri, Jun 26, 2015, 1:59 PM
Memcached!
Picture of Albert Ramsbottom Albert Ramsbottom
4 Tue, Jun 23, 2015, 5:10 PM
Transitioning to SSL network encryption on MySQL servers
Picture of Rebecca O'Connell Rebecca O'Connell
4 Tue, Jun 23, 2015, 5:16 AM
Load Test reveals Access Errors - fonts.gstatic.com (v2.8.4)
Picture of Constance Horne Constance Horne
3 Tue, Jun 23, 2015, 3:38 AM
Deploying Moodle on HP Proliant Server
Picture of Chris Ekin Chris Ekin
5 Mon, Jun 22, 2015, 10:21 PM
IIS Server clustering
Picture of Albert Ramsbottom Albert Ramsbottom
7 Mon, Jun 22, 2015, 5:46 PM
mdl_sessions and memcached
Picture of jerrett fowler jerrett fowler
3 Thu, Jun 18, 2015, 9:08 PM
V2.8.x - How to delete all course participation details
Picture of Constance Horne Constance Horne
2 Thu, Jun 18, 2015, 5:00 AM
Load testing V2.8.x
Picture of Constance Horne Constance Horne
3 Thu, Jun 18, 2015, 4:51 AM
Is Nested Trigger required to be enabled for Moodle?
Picture of Johnny Lo Johnny Lo
2 Tue, Jun 16, 2015, 1:09 AM
Moodle and PHP 7.x
Picture of Usman Asar Usman Asar
2 Sun, Jun 14, 2015, 5:06 AM
Hosting & file storage in separate locations
Picture of Tony Cunningham Tony Cunningham
3 Sat, Jun 13, 2015, 3:25 PM
JavaScript being called early
Picture of Tzvi Daum Tzvi Daum
3 Thu, Jun 11, 2015, 7:17 AM
Investigating excessive(?) DB hits
Picture of Brad Smith Brad Smith
3 Thu, Jun 11, 2015, 4:25 AM
Events queue huge
Picture of Conn Warwicker Conn Warwicker
7 Fri, Jun 5, 2015, 8:29 PM
Moodle slow with admin settings
Picture of Federica Marra Federica Marra
3 Thu, Jun 4, 2015, 8:32 PM
Scheduled tasks - Log cleanup
Picture of Gerald Albion Gerald Albion
1 Thu, Jun 4, 2015, 12:24 AM
Moodle Slow, Resources Great, what could be the problem
Picture of Paul L Paul L
2 Wed, Jun 3, 2015, 8:46 PM
My moodle website is too slow
Picture of darajeur darajeur darajeur darajeur
7 Wed, Jun 3, 2015, 4:20 PM
MUC
Picture of Albert Ramsbottom Albert Ramsbottom
8 Tue, Jun 2, 2015, 11:42 PM
Decentralized Course Materials
Picture of Calvin Vong Calvin Vong
4 Mon, Jun 1, 2015, 3:17 PM
Moodle Crashing Every Night
Picture of Scott Tolan Scott Tolan
15 Wed, May 27, 2015, 5:28 PM
Need cheap moodle hosting provider
Picture of deby williams deby williams
1 Tue, May 26, 2015, 4:47 PM
Contradictory doc on cron jobs for web cluster
Picture of Job Cespedes Job Cespedes
1 Tue, May 26, 2015, 10:56 AM
Hosting on site versus Out Sourcing
Picture of Paul Langdon Paul Langdon
5 Fri, May 22, 2015, 6:23 PM
I/O Needs in a Split System
Picture of Rick Venuto Rick Venuto
9 Thu, May 14, 2015, 10:16 PM
Load Testing
Picture of Graham Stone Graham Stone
5 Wed, May 13, 2015, 10:45 PM
Moodle very slow on local Windows high end laptop
Picture of Michel DENIS Michel DENIS
8 Wed, May 13, 2015, 3:51 AM
An update on cache landscape (Linux-based)
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
14 Wed, May 6, 2015, 3:38 AM
Moodle Very slow for users who are not administrators
Picture of Cristian Matos Cristian Matos
7 Tue, May 5, 2015, 8:39 PM
Moodle Delayed Replication Mirror Site
Picture of Zach M. Zach M.
7 Fri, May 1, 2015, 12:47 AM
Is there a solution to moodle's chat heavyness?
Picture of Nuno Pinto Nuno Pinto
5 Thu, Apr 30, 2015, 9:42 PM
quiz records error?
Picture of Tzafi Z Tzafi Z
1 Thu, Apr 30, 2015, 4:48 PM
Moodle MySQL overload error
Picture of Alejandro Calderón Alejandro Calderón
8 Tue, Apr 28, 2015, 4:01 AM
Which one best moodle hosting server in the world ?
Picture of Kathir Rajaraman Kathir Rajaraman
9 Mon, Apr 27, 2015, 2:38 PM
Share us your help and experience
Picture of zizo zizo zizo zizo
2 Sat, Apr 25, 2015, 6:23 AM
10 Mini-PCs With Pre-Installed Linux
Picture of Visvanath Ratnaweera Visvanath Ratnaweera
11 Fri, Apr 24, 2015, 1:56 PM
NewRelic RPM & Moodle Errors / Issues
Picture of Seth Mengal Seth Mengal
1 Mon, Apr 20, 2015, 9:52 PM
fatal error with memcache.php
Picture of Andy Taggart Andy Taggart
1 Mon, Apr 20, 2015, 7:09 PM
Server Requirement
Picture of Mohammad Talat Mohammad Talat
3 Sun, Apr 19, 2015, 2:52 PM
PHP memory
Picture of Rama Gundabhat Rama Gundabhat
18 Thu, Apr 16, 2015, 10:59 PM
Setting memcache as default
Picture of Andy Taggart Andy Taggart
7 Thu, Apr 16, 2015, 4:12 PM
Change filedir folder.
Picture of Oh ByeongJoo Oh ByeongJoo
0 Tue, Apr 14, 2015, 9:52 AM
quiz on moodle 2.4 slow
Picture of Maram Alsafarini Maram Alsafarini
4 Tue, Apr 14, 2015, 2:25 AM
Cron Job questions
Picture of Melissa Benson Melissa Benson
19 Sat, Apr 11, 2015, 1:59 AM
Moodle system requirements online checking tool for students?
Picture of Usman Arshad Usman Arshad
5 Wed, Apr 8, 2015, 7:08 PM
Externally hosted database server as backend (Backup) in moodle
Picture of Parth Patel Parth Patel
4 Mon, Apr 6, 2015, 11:37 PM
Question about using Xcache with Moodle 2.8
Picture of Robert Blomeyer Robert Blomeyer
1 Sat, Apr 4, 2015, 12:15 AM
HOW to build a production site "hyper-fast, simple, non-explosive"
Picture of fleu risseur fleu risseur
1 Fri, Apr 3, 2015, 7:08 PM
I AM TERRIFIED : MOODLE IS VERY SLOW !
Picture of fleu risseur fleu risseur
33 Fri, Apr 3, 2015, 6:16 AM
Maintaining large Log table
Picture of Richard Flurey Richard Flurey
6 Thu, Apr 2, 2015, 4:27 PM
Moodle site became very slow after upgrading to 2.8.5
Picture of Garamkhand Surendelg Garamkhand Surendelg
8 Tue, Mar 31, 2015, 12:10 PM
Error: MySQL server has gone away
Picture of Maknus Kowalski Maknus Kowalski
4 Mon, Mar 30, 2015, 3:19 PM
Quiz for moodle 2.2--- documents content no data
Picture of Maram Alsafarini Maram Alsafarini
2 Sun, Mar 29, 2015, 1:46 PM
Re: Active participants (split from New to Moodle can it do?)
Picture of Usman Asar Usman Asar
7 Sat, Mar 28, 2015, 4:40 AM
Repeated flood of requests causes all database connections to be used up?
Picture of Mathew Gancarz Mathew Gancarz
6 Fri, Mar 27, 2015, 11:49 PM
NFS and Memcached configuration (clustering preparation)
Picture of heli g heli g
4 Sat, Mar 21, 2015, 7:19 PM
Performance issue on dropbox repository's cron
Picture of Jordi Pujol-Ahulló Jordi Pujol-Ahulló
3 Fri, Mar 20, 2015, 8:37 PM
Memcache issues after recent security patches
Picture of sam marshall sam marshall
1 Thu, Mar 19, 2015, 10:03 PM
Cache problem
Picture of Wissam Nahas Wissam Nahas
1 Wed, Mar 18, 2015, 5:44 AM
problem on the mdl_grade_grades_category moodle 2.8, high cpu use in my server of databases.
Picture of Eduardo Miranda Eduardo Miranda
3 Wed, Mar 18, 2015, 12:35 AM
Zip Performance in Moodle
Picture of Dale Davies Dale Davies
1 Mon, Mar 16, 2015, 11:44 PM
Moodle application / sql locks
Picture of Luis Pinheiro Luis Pinheiro
1 Fri, Mar 13, 2015, 1:37 AM
Really slow logon
Picture of Stuart Hector Stuart Hector
7 Wed, Mar 11, 2015, 7:38 AM
Surface Pro 3 touch pad, not able to move activities
Picture of Annette Knobloch Annette Knobloch
2 Sun, Mar 8, 2015, 11:56 PM
Moodle based on Postgres-XC
Picture of David Paniagua Ruano David Paniagua Ruano
0 Mon, Mar 2, 2015, 5:32 PM
The coming of HTTP/2
Picture of Ken Task Ken Task
5 Mon, Mar 2, 2015, 12:23 AM