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COMPANY CONFIDENTIAL – DO NOT DISTRIBUTE 1
22. September 2015
Harald Zeitlhofer, Dynatrace
[email protected] @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 [email protected] hmp://blog.dyntrace.com
Dynatrace Free Trial: hmp://bit.ly/dmrial
