php application performance

COMPANY CONFIDENTIAL – DO NOT DISTRIBUTE 1

PHP#Meetup#Melbourne,#Australia#

April#2014#

Harald#Zeitlhofer#

@HZeitlhofer#

PHP#Applica=on#Performance#


• Technology#Strategist#at#Dynatrace#• Database#and#Web#Development#

• PHP#for#more#than#15#years#

• Love#to#discover#new#things#

Harald#Zeitlhofer#


I’m#from#Austria#


But#you#probably#know#that...#


And#for#sure#you##know#that##


Also#from#Austria#


You#might#have#heard#of...#


Applica=on#Performance#


Failures happen!!

Nobody likes it when …


Unless you work for Google or Microsoft !


… or this …


.. as it leads to this …


The#“War#Room”#

#Facebook#–#December#2012#


… and potentially to this …


And this isn’t helping either …


Yes, failures happen!!

but we can identify and/or avoid them !


but#where#should#we#start?#


and#when#???#?


some%use%cases%and%best%prac/ces%


Not#following#Web#Performance#Best#Prac=ces# 282!$Objects#on#that#page#9.68MB#Page#Size#

8.8s$Page#Load#Time#

Most#objects#are#images#

delivered#from#the##

main#domain#

Very#long#connect#=me#

(1.8s)#to#the#CDN#


Mobile#Web#Site:#This#SHOULD#NOT#happen!#

434$Resources$in#total#on#that#page:#230#JPEGs,#75#PNGs,#50#GIFs,#…#

Total#size#of#~#20MB$


cached#content#

s=ll#creates#roundtrips#!#


use%proper%caching%%

pack%JS,%CSS%files%%

use%sprites%for%images%%


frustrated#users#

slow#user#ac=on#

response#=me#


errors#in#PHP#execu=on#


less#library#caused#

performance##

hotspot#


know%your%code%%

know%your%%external%libraries%

%


/katgrp/browse#


/katgrp/get/$/1626#


/cave/browse/gis/$/katgrp/1626#


/cave/browse/gis/$/katgrp/1626#–#applica=on#context#


Sessions#in#PHP#

•  session_start()#locks#the#file#where#session#data#are#stored#•  Released#when#script#ends#• Use#session_write_close()#to#unlock#the#file#before#execu=ng#slower#code#• Or#create#your#own##save#handler#with##

session_set_save_handler()#


Looks#bener#now…#


performance#hotspot#

/en/externalprice/#


response#=me##

hotspot#PHP#


session#data#locking#

response#=me#hotspot:#

usleep();%


be%careful%with%locking%%


Locking#problem#solved,#but#…#


/katgrp/browse#server#side#execu=on#

=me#to#check##

the#database#


From#the#DB#perspec=ve#


Here#we#go:#


N+1#Queries#

Metrics:####SQL#Execu=ons#/#Request#

##of#“same”#SQL#Execu=ons#


mind%the%database%!!!%%


anything#else#we#can#do?#

what#about##

3rd#party#content?#


3rd#party#content#


watch%external%services%%

be%aware%there%are%services%you%%can't%control%

%


to#summarize#that#


PHP#Applica=on#Performance#


PHP#OpCache#


PHP#OpCache#disabled#


PHP#OpCache#enabled#


huge#number#of#

sta=c#resources#


Web#Request#handling#


Transac=on#flow#


Nginx#FastCGI#cache#


Full#page#/#data#cache#with#Nginx#and#Memcached#

<?php ... function __construct () { $this->c = new Memcached(); $this->c->addServer('localhost',11211);

} function setCache ($key, $content) { $this->c->set($key, $content);

} ... $this->setCache($_SERVER['REQUEST_URI'], $this->renderPage()); ... $this->setCache('/data/news/getlist', $this->getNewsList()); ... ?>


• ngx_hnp_memcached_module#

Full#page#/#data#cache#with#Nginx#and#Memcached#

server { location / { set $memcached_key "$uri"; memcached_pass localhost:11211; error_page 404 502 504 = @fallback; } location @fallback { proxy_pass http://backend; } }


PHP,#5k#requests,#concurrency#100#

0#

1#

2#

3#

4#

5#

6#

7#

8#

Apache+PHP# Nginx+PHP# Nginx+Memcached#

<?php echo "Hello World"; ?>


use%right%server%tools%%

configure%properly%%


But still, failures happen!!

make sure to identify

them as soon as possible


EndtTotEnd#Applica=on#Monitoring#


monitor%all%transac/ons%in%all%channels%


User#Experience#Management#

locate%regional%performance%issues%


monitor%your%infrastructure%


process%monitoring%


iden/fy%response%/me%hotspots%in%the%backend%

COMPANY CONFIDENTIAL – DO NOT DISTRIBUTE 83 drill%down%to%find%the%root%cause%


Applica=on#Performance#


Performance#Tools#


• Load#Generator#(Apache#Benchmark,#JMeter)#

• Firebug,#Google#Developer#Tools#Dynatrace#Ajax#Edi=on#

• Google#PageSpeed#• Dynatrace#Free#Trial#

•  Free#trial#license#for#30#days#

•  Free#for#developers#on#local#machine#

My#favorites#

hnp://bit.ly/dnrial#


www.dynatrace.com#

Thank#you#!!!#

Harald%Zeitlhofer%Senior#Technology#Strategist#

#HZeitlhofer#

[email protected]#

hnp://blog.dyntrace.com#

php application performance

Technology

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