Improve Magento Performance

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22.  September  2015  

Harald  Zeitlhofer,  Dynatrace    

harald.zeitlhofer@dynatrace.com  @HZeitlhofer  

Improve  Magento  Performance  To  Drive  Higher  Conversions    

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• Major  problem  in  November  2014  • Magento  Shop  was  actually  too  slow!  

• Infrastructure  was  very  limited  at  that  Lme  

• Scale  Infrastructure  ?  • Get  external  advice  • The  real  problems  were  hidden  that  Lme  

Performance  threatens  goals  

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lessc  CSS  pre-­‐processor  

social  login  module  

PHP  execuLon  was  really  

slow  

during  the  first  analysis  session  we  iden2fied  

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average contribution of PHP compilation time

Slow  PHP  execuLon  

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PHP compilation time could be reduced considerably just by using PHP 5.5 + Opcache!

ARer  update  to  PHP  5.5  

use  latest  versions  of  used  technology  

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PHP execution presented a major global bottleneck

for page load times

Performance  hotspot:  PHP  execuLon  

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less  CSS  preprocessor  

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less  CSS  preprocessor  

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errors  in  PHP  execuLon  

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server-side calls to unused external services

Social  Login  Modul  

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Using  external  services  

performance  hotspot  /en/externalprice/  

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response  Lme    hotspot  PHP  

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slow  SAP  connector  ?  

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session  data  locking  

response  Lme  hotspot:  usleep();  

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• CM_RedisSession  uses  usleep()  in  locking  logic  

•  session_start()  locks  session  file  • only  lock  if  required  •  session_write_close()  releases  lock  

PHP  session  locking  

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• New  feature:  show  stock  and  leadLmes  

• Calculated  on-­‐the-­‐fly  • Very  bad  performance  impact  

Inhouse  development  

• Design  change:  pre  calculate  and  cache  • Workflow  change:  test  automaLon  including  performance  tests  

know  your  code    

know  your  external  libraries    

evaluate  carefully  before  using  

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Modern  Web  Pages:  lots  of  staLc  content  

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

more  than  20MB  page  size  

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Not  following  Web  Performance  Best  PracLces   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  Lme  (1.8s)  to  the  CDN  

use  proper  caching    

pack  JS,  CSS    

use  sprite  for  images    

use  CDNs  

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cached  content  

sLll  creates  roundtrips  !  

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Original  Web  Request  handling  

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New  Web  Request  handling  

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more information: http://apmblog.dynatrace.com/2014/10/30/proper-configuration-running-php-nginx/ http://www.slideshare.net/HaraldZeitlhofer/php-conference-berlin-2015-running-php-on-nginx

NGINX  

use  proper  server  tools  

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Status  Quo  

•  Infrastructure  has  changed  significantly  • New  design  and  review  process  • Test  automaLon  with    performance  tests  

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CharLng  data  in    business  dashboards  

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PosiLve  impact  on  conversion  rate  

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www.dynatrace.com  

Thank you !!!

Harald  Zeitlhofer  Performance  Advocate  #HZeitlhofer  harald.zeitlhofer@dynatrace.com  hmp://blog.dyntrace.com  

Dynatrace  Free  Trial:    hmp://bit.ly/dmrial