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.

DiscussionStarted byRepliesLast post
Moodle 2.8.1. Server Cluster configuration. Apache Crashing with "exit signal Bus error (7)" 20 Matteo Scaramuccia
Transitioning to SSL network encryption on MySQL servers 4 James McLean
Memcached 7 Mr Blue
OPCode cache 18 Howard Miller
Moodle Resources 8 Visvanath Ratnaweera
Load testing V2.8.x 3 Jeff White
Load Test reveals Access Errors - fonts.gstatic.com (v2.8.4) 3 Constance Horne
Memcached! 4 Albert Ramsbottom
An update on cache landscape (Linux-based) 14 Albert Ramsbottom
Deploying Moodle on HP Proliant Server 5 Tim Hunt
V2.8.x - How to delete all course participation details 2 Constance Horne
mdl_sessions and memcached 3 James McLean
Is Nested Trigger required to be enabled for Moodle? 2 Johnny Lo
My moodle website is too slow 7 fahid hasan
Hosting & file storage in separate locations 3 Jacov Mostovicz
Moodle and PHP 7.x 2 Usman Asar
JavaScript being called early 3 Tzvi Daum
MUC 8 Albert Ramsbottom
Moodle slow with admin settings 3 Federica Marra
Investigating excessive(?) DB hits 3 Brad Smith
Events queue huge 7 Conn Warwicker
MySQL InnoDB_file_format setting: Antelope or Barracuda? 3 Mathew Gancarz
Moodle Slow, Resources Great, what could be the problem 2 Paul L
Scheduled tasks - Log cleanup 1 Howard Miller
Moodle site became very slow after upgrading to 2.8.5 8 Albert Ramsbottom
Decentralized Course Materials 4 Rick Jerz
Moodle Crashing Every Night 15 Jeff White
Need cheap moodle hosting provider 1 Howard Miller
Contradictory doc on cron jobs for web cluster 1 Howard Miller
Hosting on site versus Out Sourcing 5 Visvanath Ratnaweera
I/O Needs in a Split System 9 Visvanath Ratnaweera
10 Mini-PCs With Pre-Installed Linux 11 Visvanath Ratnaweera
Moodle very slow on local Windows high end laptop 8 Michel DENIS
Which one best moodle hosting server in the world ? 9 Fahad Rafiq
Moodle MySQL overload error 8 Alejandro Calderón
Is there a solution to moodle's chat heavyness? 5 Visvanath Ratnaweera
Moodle Delayed Replication Mirror Site 7 jason everling
Setting Up Memcache with transparent session failover 2 Jeff White
Share us your help and experience 2 Usman Asar
quiz records error? 1 Howard Miller
fatal error with memcache.php 1 Howard Miller
Server Requirement 3 Seth Mengal
NewRelic RPM & Moodle Errors / Issues 1 James McLean
Setting memcache as default 7 Andy Taggart
Moodle system requirements online checking tool for students? 5 kany adrew
quiz on moodle 2.4 slow 4 Maram Alsafarini
Change filedir folder. 0 Oh ByeongJoo
Externally hosted database server as backend (Backup) in moodle 4 Usman Asar
Question about using Xcache with Moodle 2.8 1 Matteo Scaramuccia
HOW to build a production site "hyper-fast, simple, non-explosive" 1 Usman Asar
Increase in disk space usage in 2.2 to 2.7 upgrade 7 Walter Horowitz
Error: MySQL server has gone away 4 Howard Miller
Re: Active participants (split from New to Moodle can it do?) 7 Mary Cooch
Quiz for moodle 2.2--- documents content no data 2 Visvanath Ratnaweera
Repeated flood of requests causes all database connections to be used up? 6 Howard Miller
Performance issue on dropbox repository's cron 3 Jordi Pujol-Ahulló
NFS and Memcached configuration (clustering preparation) 4 heli g
Memcache issues after recent security patches 1 sam marshall
Cache problem 1 Howard Miller
Zip Performance in Moodle 1 Howard Miller
Very slow course participation reports 3 Jay Liotta
Really slow logon 7 Howard Miller
Moodle application / sql locks 1 Visvanath Ratnaweera
Upgrading MySQL 5.1 to 5.5 , configuration setting changes? 9 Przemek Kaszubski
Assignment Uploads Slow in Moodle 2.7 3 heli g
Migrating from a linux to a windows server 11 Stuart Hector
Surface Pro 3 touch pad, not able to move activities 2 Andrew Nicols
File or Database Sessions? 6 Mark Picker
Memcached Moodle site still DB row locking 6 jerrett fowler
Moodle based on Postgres-XC 0 David Paniagua Ruano
Hosted webspace on 1&1 germany doesn't support all moodle features 6 Howard Miller
installation moodle 7 joss micheal
course-completion-report 4 jason white
Synchronize user pictures 3 Jon Witts
pluginfile.php performance problem 20 Troels Bugge
Needs Assesment 3 Mary Cooch
Moodle course page slow only with Firefox 12 Hittesh Ahuja
Slow response using Chrome when compared to IE - 2.8.3 (Build: 20150202) 5 Stephen Bloomer
MOODLE 2.7 on Yosemite w/ Firefox 3 Nicola Taylor
Sporadic email delivery times 2 Nathan Bruley
Newbie ? - Short video clip storage 0 Tim Edsell
Moodle 2.7 is very slow 1 Visvanath Ratnaweera
Capture Cards on Moodle 1 ryan sanders
Managing the number of tables in SQL databases 2 Gustavo Monteiro
How many concurrent users should my hardware support? 10 Hassan AbdelSabour
hardware requirements for 500 concurrent users 2 Visvanath Ratnaweera
Saving quiz caching takes a long time and crashes 12 Michael Ko
Slow cronjobs in 2.7 vs 2.6 0 Ellio Mourinho
Are memcached cache tests always slower than file cache 8 Jeff White
Special Characters strange behavior after update to 2.8.1 1 Greg Rodenhiser
Hardware Requirement for 65 Con Current Users 2 Visvanath Ratnaweera
Working and load very slow my site 1 Howard Miller
Dealing with "login storm" 3 ryan sanders
Performence problem in 2.4 1 Howard Miller
2.6.6 custom search Improvement 2 José Puente Fuentes
cron job on a hosted site 6 Alex Delaforce
One web server, multiple Moodle setups 13 Visvanath Ratnaweera
2.8.1 production server 4 José Puente Fuentes
Cron job - 2 web servers - different schedule 1 Andrew Nicols