Magento Meetup New Delhi- Performance Optimization This slide is all about performance optimization in Magento2- How to use Black fire? what are the benefits of optimization? How performance optimization can be done?

1. Performance Optimization
Jitendra Singh
Software Engineer

2. Why
performance is
so important
40% of users leave a
website that take more
than 3 seconds to load

3. Measuring
Performance
1. The memory consumption
2. The number of times function
are called
3. The duration of function’s
execution
4. The number of SQL queries

4. Performance
Testing Tools
1. Xdebug
2. KCachegrind
3. Xhprof
4. Blackfire etc.

5. What is
Blackfire
Blackfire is a web based
Performance
Management Solution.
Blackfire can be used at
any stage of your
application’s lifecycle:
during development, test
and production.

6. Installation
1. Install the blackfire-agent
package (sudo apt-get install blackfire-agent)
2. Configure you blackfire
credentials (sudo blackfire-agent -register)
3. Install the blackfire-agent
package (sudo apt-get install blackfire-agent)
4. Run the config command to
initialize the client (blackfire config)
5. Restart Blackfire (sudo
/etc/init.d/blackfire-agent restart)

7. Triggering
Blackfire
Profile
1. Blackfire Companion (Google
Chrome extension)
2. Blackfire Client (CLI)

8. **Logos and Trademarks are owned by
their respective owners

9. **Logos and Trademarks are owned by
their respective owners

11. **Logos and Trademarks are owned by
their respective owners

12. **Logos and Trademarks are owned by
their respective owners

13. Profile Ajax
Request

14. **Logos and Trademarks are owned by
their respective owners

15. **Logos and Trademarks are owned by
their respective owners

16. **Logos and Trademarks are owned by
their respective owners

17. **Logos and Trademarks are owned by
their respective owners

18. **Logos and Trademarks are owned by
their respective owners

19. Profiling
CLI commands
1. $ blackfire --samples 10 run php my-script.php
2. $ blackfire --reference=7 run php my-script.php
3. $ blackfire --json run php my-script.php

20. Profiling
part of your
code
1. $blackfire = new BlackfireClient();
2. $probe = $blackfire->createProbe();
// some PHP code you want to profile
$profile = $blackfire->endProbe($probe);
3. // store the profile UUID
$uuid = $probe->getRequest()->getUuid();
// retrieve the profile later on
$profile = $blackfire->getProfile($uuid);

21. Assertion
An assertion is an expression that
must return a Boolean (true if the
assertion succeeds,false
otherwise).
An assertion is made of metric
values, variables, operators
"main.peak_memory < 10mb"
"metrics.sql.queries.count == 0"
"main.peak_memory < vars.max_memory"

22. Writing
Assertion

23. Testing with
custom
metrics

24. Thanks