Presentación sobre el uso de blackfire.io para realizar profiling de las apps PHP y encontrar como mejorar su rendimiento en CPU o memoria.

2. Meetups
@SergioCarracedoRubén González
Programador vocacional.
Teleco.
JS, C, C++, Java, PHP, Python, Scala, Rust, Go...
@rubenrua

3. Control de calidad del software
Meetups
● Test unitarios
● Test funcionales
● Test de integración
● Test de UX
● Test de performance

4. Control de calidad del software
Meetups
● Test unitarios
● Test funcionales
● Test de integración
● Test de UX
● Test de performance
¿Quien hace test de performance?

5. ¿Por qué el performance importa?
Meetups
● ...

6. ¿Por qué el performance importa?
Meetups
● Dejar un mundo más verde.
○ Menos recursos necesarios.
○ Menos energía gastada.
● $$$$
○ Otra forma de ver el punto anterior.
● Happy users ⟹ More users (SEO)
○ 40% of users abandon a website that takes more than 3 seconds to load.
● Fama.
○ http://www.techempower.com/benchmarks/
○ http://benchmarksgame.alioth.debian.org/u64q/php.html

7. ¿Como se consigue performance?
Meetups
● Cliente: Optimizar assets (guetzli), JS, Chrome DevTools...
● Red: HTTP/2, comprimir tráfico (TLS 1.3 0-RTT)...
● Servidor: cache, optimizar servidor, optimizar aplicación.
● Base de datos: saltar ORM/ODM, desnormalizar esquema, cache...

8. ¿Como se consigue performance en PHP?
Meetups
Usa PHP7 (Con OPcache)

9. ¿Como se consigue performance en PHP?
Meetups
Usa PHP7 (Con OPcache y sin Xdebug)

10. Sobre performance
Meetups
Antes de optimizar, mide mucho y bien. (blackfire.io)

11. ¿Que es blackfire.io?
Meetups
● Profiler para PHP
● Mejora la UX de XHProf (y de var_dump([microtime(), memory_get_usage()]);)
● De los creadores de Symfony
● Saas
● Instalar servicio linux (docker) y zend_extension
● Vale para peticiones HTTP y para CLI
● Blackfire puede ser usado en cualquier fase del ciclo de video de tu aplicación: durante el
desarrollo, test, pre-produccion and produccion, para medir, test, debug y optimizar su
performance.

12. ¿Que es blackfire.io?
Meetups

13. Como se instala
Meetups
# https://blackfire.io/docs/up-and-running/installation
$ # Configuring the Debian Repository
$ wget -O - https://packagecloud.io/gpg.key | apt-key add -
$ echo "deb http://packages.blackfire.io/debian any main" | tee /etc/apt/sources.list.d/blackfire.list
$ apt-get update
$ # Installing the Agent
$ apt-get install -y blackfire-agent
$ sudo blackfire-agent -register
$ sudo /etc/init.d/blackfire-agent restart
$ # Installing the CLI tool
$ blackfire config
$ # Installing the PHP Probe
$ apt-get install -y blackfire-php
$ php -m
[PHP Modules]
blackfire
…
[Zend Modules]
Zend OPcache
blackfire

14. DEMO: First profile
Meetups
● https://blackfire.io/docs/24-days/04-first-profile
● http://gitlist.demo.blackfire.io/
● https://blackfire.io/profiles/bc2e9173-1e17-4fdd-aa36-d1b4e742a945/graph

15. DEMO: First profile
Meetups
● https://blackfire.io/docs/24-days/04-first-profile
● Site, profile and comparation.

16. Caso real: PuMuKIT
Meetups
root@aa272b34fafc:/var/www/pumukit2# blackfire curl http://172.17.42.2/podcast/conferencevideo.xml
Profiling: [########################################] 10/10
Blackfire cURL completed
Profile URL: https://blackfire.io/profiles/eed51004-e27c-452d-82be-49677a263113/graph
Total time: 3.56 s
I/O: 31.8 ms
Memory: 358 MB
root@aa272b34fafc:/var/www/pumukit2# blackfire curl http://172.17.42.2/podcast/conferencevideo.xml
Profiling: [########################################] 10/10
Blackfire cURL completed
Profile URL: https://blackfire.io/profiles/3bc6fccf-d64e-4e51-9e5c-64e732bd6e9f/graph
Total time: 3.06 s
I/O: 29.3 ms
Memory: 37.9 MB
● Force an UnitOfWork::clear
● https://github.com/campusdomar/PuMuKIT2/commit/7c5fa20a8eca5e243ba57daaf24530e42c38b3d8?w=1

17. Caso real 2: Composer
Meetups
● https://github.com/composer/composer/pull/6168
● https://blackfire.io/profiles/675af85e-e54c-43af-9144-f7021639563a/graph
● https://blackfire.io/profiles/compare/675af85e-e54c-43af-9144-f7021639563a...0c2b42
21-8b63-4b65-9931-84629ec58e99/graph

20. El código
Meetups
<?php
//Memory 38MB
class Rule
{
public $literals;
public function __construct(array $literals)
{
$this->literals = $literals;
}
}
$rules = array();
$i = 0;
while ($i<80000){ //
$i++;
$array = array(-$i, $i);
$rule = new Rule($array);
$rules[] = $rule;
}

21. El código
Meetups
<?php
//Memory 38MB
class Rule
{
public $literals;
public function __construct(array $literals)
{
$this->literals = $literals;
}
}
$rules = array();
$i = 0;
while ($i<80000){ //
$i++;
$array = array(-$i, $i);
$rule = new Rule($array);
$rules[] = $rule;
}
<?php
//Memory 11.1MB
class Rule2Literal
{
public $literal1;
public $literal2;
public function __construct($literal1, $literal2)
{
$this->literal1 = $literal1;
$this->literal2 = $literal2;
}
}
$rules = array();
$i = 0;
while ($i<80000){ //
$i++;
$rule = new ConflictRule(-$i, $i);
$rules[] = $rule;
}

22. Resultado
Meetups
Project master 1st iter 2nd iter
https://github.com/Sylius/Sylius.git 43.7s 983 MB 41.8s 765 MB 46.6s 539 MB
https://github.com/laravel/laravel.git 7.49s 205 MB 6.9s 189 MB 6.96s 178 MB
https://github.com/symfony/symfony-demo 31.9s 699 MB 31.4s 546 MB 32s 383 MB
Private project 51.1s 1000MB -- 50.6s 536MB

23. Otros casos reales
Meetups
● Composer got a huge performance boost last week thanks to the disabling of the garbage collector
● How we sped up Sylius' Behat suite with Blackfire: The Sylius test suite is now 6 times faster and
consumes 90% less memory!
● Optimizing league/commonmark with Blackfire.io: Two simple changes led to a whopping 52.5%
performance boost!
● Pomm: A two hours run with Blackfire.io: "35% performance improvement is a major enhancement in
such a test case."
● ownCloud: Recent Performance Optimizations: "Enthusiasm around the tool is becoming very visible,
with a large number of performance related pull requests showing up with Blackfire graphs."

24. Otros casos reales
Meetups
● Composer got a huge performance boost last week thanks to the disabling of the garbage collector
● How we sped up Sylius' Behat suite with Blackfire: The Sylius test suite is now 6 times faster and
consumes 90% less memory!
● Optimizing league/commonmark with Blackfire.io: Two simple changes led to a whopping 52.5%
performance boost!
● Pomm: A two hours run with Blackfire.io: "35% performance improvement is a major enhancement in
such a test case."
● ownCloud: Recent Performance Optimizations: "Enthusiasm around the tool is becoming very visible,
with a large number of performance related pull requests showing up with Blackfire graphs."

25. Otros casos reales
Meetups
● Composer got a huge performance boost last week thanks to the disabling of the garbage collector
● How we sped up Sylius' Behat suite with Blackfire: The Sylius test suite is now 6 times faster and
consumes 90% less memory!
● Optimizing league/commonmark with Blackfire.io: Two simple changes led to a whopping 52.5%
performance boost!
● Pomm: A two hours run with Blackfire.io: "35% performance improvement is a major enhancement in
such a test case."
● ownCloud: Recent Performance Optimizations: "Enthusiasm around the tool is becoming very visible,
with a large number of performance related pull requests showing up with Blackfire graphs."

26. Otros casos reales
Meetups
● Composer got a huge performance boost last week thanks to the disabling of the garbage collector
● How we sped up Sylius' Behat suite with Blackfire: The Sylius test suite is now 6 times faster and
consumes 90% less memory!
● Optimizing league/commonmark with Blackfire.io: Two simple changes led to a whopping 52.5%
performance boost!
● Pomm: A two hours run with Blackfire.io: "35% performance improvement is a major enhancement in
such a test case."
● ownCloud: Recent Performance Optimizations: "Enthusiasm around the tool is becoming very visible,
with a large number of performance related pull requests showing up with Blackfire graphs."

27. Consejos
Meetups
● Primero usa PHP7 (y OPCache).
● Antes de optimizar, mide mucho y bien. (blackfire.io)
● Conoce tus herramientas (time) (@igrigorik).
● PHP no vale para todo. (@julienPauli)
● La optimización prematura es la raíz de todos los males. (Donald Knuth)
● You can optimise for execution speed. You can optimise for space.
But the most precious thing you should optimise for is
understandability

28. Links
Meetups
● https://blackfire.io/docs/24-days/01-introduction
● https://blog.blackfire.io/php-7-performance-improvements-packed-arrays.html
● https://hpbn.co/
● http://www.ideas2it.com/blog/symfony-performance-tips-tricks/
● http://jpauli.github.io/2015/03/05/opcache.html#configuring-opcache
● https://getcomposer.org/doc/articles/autoloader-optimization.md

29. www.opsou.com www.pedrofigueras.com