benchmark profile and boost your symfony application

RATIONALLYBOOSTSYMFONY2APPLICATION

2014 VERSION

welcometothebundle.com@liuggio welcometothebundle.com

PERFORMANCE PROBLEM?

PERFORMANCE PROBLEM?TODAY SPEED IS A FEATURE

BUSINESSNEEDSSPEED?

(speed in terms of adding a new feature, bug hunting ...)

loadbalancer

reverseproxy

CDN

web server

MQ

DBcache

sessionstorage

DB

internalstorage

BROWSER

privatecache

shared cache

DNS

ISP

your company

GUESS

PRIDE PREJUDICE AND GUESSING

THEENDLESSCYCLE

make change

benchmark

profile

benchmarking

->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->

the process of comparing …

sterilized environment - disable profiler

1

ab$ apt-get install apache-utils$ ab -e output.csv -c 10 -t 10 http://book.local$ ab -p post.txt -T application/x-www-form-urlencoded -e output.csv -kc 10 -t 10 http://book.local

● http_load simple● siege complete● jmeter complex


ProfilingXHProf demo ...2


make change

benchmark

profile

Make Changes


3

make change

benchmark

profile

404 silver bulletNot Found


● Think as readonly filesystem● Don’t let the user wait● Caches are your friends


● Try to quit from the optimization-cycle

PHPAPC


● apc.stat=0 (need maintenance)● fragmentation

(symfony is not slow! opcode, php 5.4, apc)

● Zend Opcode● ACPu (emulate all the apc_* calls)


PHP5.5

HHVM->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->

(hhvm - HPHPc - Performance on real application)

HHVM = PHP++ ?->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->

(HHVM is a great opportunity for Symfony and for object oriented lovers)

symfonyecosystem● $ composer dump-autoload --optimize


● twig extension http://twig.sensiolabs.org/doc/installation.html

symfonyecosystem● [ASSETIC] use assetic and CDN, compress and minify files

● [SWIFT MAILER] email in the spool like Redis/Gearman or MQ (remember to flush)

● [PROXY] no logic in the constructor!

<service id="foo" class="Acme\Foo" lazy="true" />


[MONOLOG] don’t log to file in production debugging: Sentry or Graylog


yourcachewarmup->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->

liip/LiipDoctrineCacheBundle

Doctrine/Common/CacheWithout bundle

services.yml

in your application

Use a bundle


doctrineORM● Database Abstraction Layer (DBAL)● Object Relational Mapper (ORM)


ORMcachesmetadata, query, result

->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change->benchmark->profile->make change

understandUOWUnit Of Work


UOWeffect

TLDR;

keeps track changes of objectsand coordinates the writing


Maintains a list of objects affected by a business transaction and coordinates the writing out of changes and the

resolution of concurrency problems

UnitofWork

Managed


UOWeffect

flush is expensive* while { …. $this->em->persist($v); $this->em->flush() }


* profile your domain first.

Reducing the flush cost*

— Number of managed Entities

— Type of entities (Read-Only)

$em->flush($entity);

/** * @Entity * @READONLY*/ Class Status {

$em->getUnitOfWork() ->markReadOnly($entity);


* if you really need

Reducing the flush cost*/** @Entity * @ChangeTrackingPolicy("DEFERRED_EXPLICIT”)

tracking policy

implicit DB === UOW explicit DB != OUW


* if you really need

doctrineORM● Reference

● Partial object*


$q = $em->createQuery("select partial u.{id,name} from \Domain\User u");

$comment->setPost($em->getReference(‘AcmeBundleEntityPost’, $postId));

* smelling tip, inconsistent objects

doctrineORM

● Change Hydration *

HYDRATE_OBJECT

$query->setHydrationMode(\Doctrine\ORM\Query::HYDRATE_ARRAY); HYDRATE_SCALAR HYDRATE_SINGLE_SCALAR HYDRATE_SIMPLEOBJECT


* Object Oriented will cry.

theHidden Hydrationcache *


* Be careful, only for Read operations


theHydrationcache * With ResultCache

With HydrationCache

* profile data from my domain not yours.

cacheproblem● invalidation● cache miss storm

morelesscache● pre-caching cache-back● microcaching


doctrineORMassociation● Fetching is LAZY by default

● Changing for some queries

● Fetching EXTRA LAZY

$query = …$query->setFetchMode(“Order”, “Cart”, “LAZY”);

->contains($entity); ->count(); ->slice($offset, $length);

/*** @ManyToOne(targetEntity=”Cart”, cascade={“all”}, fetch=”EAGER”)



HTTPCache

● http specification● validation / expiration● safe methods● Edge Side Included

http://symfony.com/doc/current/book/http_cache.html

measure … and Metrics?● Behaviour● Measure applications data● Don’t use for benchmarking

Visual tool to better understand the reality


benchmark->profile->make change

metrics produces graphs decisions

composer install liuggio/statsd-client-bundle ~1

Optimizing dev tool


https://www.flickr.com/photos/itomcash/12953162645/sizes/l/

(multiple xdebug configs, db on ram, tricks, shared and private fixtures)

OOD, SOA, DDD, 12factorsArchitecture

BALANCED

OPTIMIZATION vs MAINTAINABILITY

BE

References1. http://labs.qandidate.com/blog/2013/10/21/running-symfony-standard-on-hhvm/2. http://www.appdynamics.com/blog/php/php-performance-crash-course-part-1-the-basics/3. https://support.cloud.engineyard.com/entries/26902267-PHP-Performance-I-Everything-You-Need-

to-Know-About-OpCode-Caches4. https://speakerdeck.com/dshafik/lonestar-php-fast-not-furious-how-to-identify-and-fix-slow-code5. http://share.ez.no/learn/ez-publish/ez-publish-performance-optimization-part-1-of-3-introduction-

and-benchmarking/%28page%29/56. http://www.linuxhelp.in/2012/11/benchmarking-with-http-load.html7. https://speakerdeck.com/bastianhofmann/profiling-php-applications8. http://www.symfony.com9. http://blog.ircmaxell.com/2013/09/rambling-on-internals.html

10. .P of EAA page 184 Patterns of Enterprise Application Architecture by Martin Fowler11. https://doctrine-orm.readthedocs.org/en/latest/reference/unitofwork.html12. http://docs.doctrine-project.org/en/latest/reference/change-tracking-policies.htmlFlush optimization13. http://slides.seld.be/?file=2011-10-20+High+Performance+Websites+with+Symfony2.html#1

Credits:https://www.flickr.com/photos/kelehen/8962203423https://www.flickr.com/photos/itomcash/12953162645

https://www.flickr.com/photos/kelehen/8962203423

https://www.flickr.com/photos/kelehen/8962203423

https://www.flickr.com/photos/itomcash/12953162645

https://www.flickr.com/photos/itomcash/12953162645

QUESTIONSAREALWAYSBETTERTHANANSWERS

@liuggio

https://joind.in/10783

benchmark profile and boost your symfony application

Technology

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graylog benchmark

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