optimizing the performance of chamilo lms
DESCRIPTION
Presentation given by Patrick Roth from the University of Geneve in teh Chamilo Users Day Madrid 2013 showing how to optimize Chamilo for a better performance.TRANSCRIPT
Patrick Roth, Abderrahim Oulmi, Laurent Opprecht, Olivier Jeannin
Optimizing the performance of your LMS: example with Chamilo
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Institutional context
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The University of Geneva
• # Students: 17500• # Teachers: 2250 • # faculties: 8
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eLearning tools at University of Geneva
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Information and training– Website: elearning.unige.ch– Blog: ciel.unige.ch, twitter (@cielge)– Workshops (Chamilo, Mahara, RCFE, etc.)– Techno-pedagogical advice– Copyright Expertise– Events (BarCamp, webinars, workshops, etc.)
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– # Users: 18059• # Teachers: 1571 • # Students: 16488
– # Active courses: 2068
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Solution
Optimizing the performance of Chamilo
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Solution
How ?
Plan
Do
Check
Act
• Plan– Goal to reach
• Do– Setup your simulation environment
• Check– Measure
• Act– Find the right optimization
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Solution
Goal to reach• Obtain the best performance
Plan
Do
Check
Act
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Solution
Goal to reach• Psychology of web performance
“How web page response time affect user psychology and behavior”
Plan
Do
Check
Act
(WebSiteOptimization, 2008)
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Solution
Goal to reach• Psychology of web performance
Plan
Do
Check
Act
Load times
8 to 10 seconds
“lower perceived credibility”(Fogg et al. 2001)
“lower perceived quality”(Bouch et al. 2000)
“increase user frustration”(King 2003)
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Solution
Goal to reach• Psychology of web performance
Plan
Do
Check
Act
Load times
8 to 10 seconds
“perceived more interesting”(Ramsay et al. 1998)
“perceived more attractive”(Skadberg and Kimmel)
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Solution
Goal to reach
Web page response time < 10 seconds
Plan
Do
Check
Act
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Solution
Setup your simulation environment• Tool: Apache JMeter
– Test plan• Scenario• Thread Group• Measure
Plan
Do
Check
Act
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Solution
Setup your simulation environment• JMeter Test Plan: scenario
Plan
Do
Check
Act
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Solution
Setup your simulation environment• JMeter Test Plan: thread group
Plan
Do
Check
Act
2 secondsdelay
2 secondsdelay . . .
500 users
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Solution
Setup your simulation environment• JMeter Test Plan: measure
– Average web page response time (in ms)
Plan
Do
Check
Act
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Solution
Measure• Hardware
Plan
Do
Check
Act
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Solution
Measure• Software
– Average web page response time – Logs (apache, MySQL, etc.)
Plan
Do
Check
Act
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Solution
Find the right optimization• Hardware configuration (CPU, RAM, disk, network, etc.)• Operating System (Linux, Unix, Windows, etc.)• Web server performance
– PHP performance (PHP accelerator, settings, etc.)– Apache performance (settings, modules, etc.)
• Database performance (settings, engine, queries, etc.)
Plan
Do
Check
Act
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Results
Our findings1. Use real server instead of VM
2. Choose the right DB engine for each table (InnoDB vs MyISAM)
3. Add the right PHP accelerator
4. Update your LAMP components (Apache, PHP, MySQL)
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Results
Find the right optimization• Hardware configuration (CPU, RAM, disk, network,
etc.)• Operating System (Linux, Unix, Windows, etc.)• Web server performance
– PHP performance (PHP accelerator, settings, etc.)– Apache performance (settings, modules, etc.)
• Database performance (settings, engine, queries, etc.)
Use real server instead of VM
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Results
Find the right optimization• Hardware configuration (CPU, RAM, disk, network,
etc.)• Operating System (Linux, Unix, Windows, etc.)• Web server performance
– PHP performance (PHP accelerator, settings, etc.)– Apache performance (settings, modules, etc.)
• Database performance (settings, engine, queries, etc.)
Choose the right DB engine
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Results
Find the right optimization• Hardware configuration (CPU, RAM, disk, network,
etc.)• Operating System (Linux, Unix, Windows, etc.)• Web server performance
– PHP performance (PHP accelerator, settings, etc.)– Apache performance (settings, modules, etc.)
• Database performance (settings, engine, queries, etc.)
Add the right PHP accelerator
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Results
Our findings
(Opcode Cache Benchmarks, 2013)
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Results
Find the right optimization• Hardware configuration (CPU, RAM, disk, network,
etc.)• Operating System (Linux, Unix, Windows, etc.)• Web server performance
– PHP performance (PHP accelerator, settings, etc.)– Apache performance (settings, modules, etc.)
• Database performance (settings, engine, queries, etc.)
Update your LAMP components
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Results
Our findings
Component Before Updated
Apache 2.2.22 2.4.6
PHP 5.3 5.5.3
Update your LAMP components
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Results
Our findings• Detect slow queries and optimize them
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Results
Our findings• Detect slow queries and optimize them
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In summary
5 tips for optimizing your Chamilo 1. Use a real server
2. Choose the right DB engine for each table
3. Update your LAMP components
4. Add the Zend Optimizer+ accelerator
5. Detect slow queries and optimize them
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Current situation
Measure this week with Chamilo 1.9.x
# of users Chamilo response time [ms]
425 560
507 493
532 600
725 460
750 483
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Current situation
Measure this week
Chamilo response time < 1 second
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Thank you