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Easy path to better performance: up to 20% increase with PHP 5.4
Evgeniy KulishTechnical Solution Architect (Magento ECG)
Reid ParhamLead Systems Engineer (Copious, Gold Magento Solution Partner )
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PHP 5.3 vs PHP 5.401
What’s wrong with PHP 5.3?
• End of Life• “Old-school” language capabilities ☺• Limited performance
Why PHP 5.4?
• Active support and development• New language features• Performance increase• Optimized memory usage• Magento officially supports PHP 5.4 for CE
1.6-1.8+ and EE 1.11-1.13+
Testing methodology02
Test Database
• 2,000,000 products• 198 categories (depth of 5)• 171 EAV attributes• 100,001 customers• 7 CMS blocks• 9 CMS pages• 1 tax rule• 1 catalog rule
Cluster Configuration
Web Server• CPU: 2 Intel Xeon x3460 2.80GHz• RAM: 32GB• OS: Ubuntu 12.04 LTS 64-bit• Storage: HDD, no RAID
Cluster Configuration
Database Server• CPUs: 4 Intel Xeon x5645 2.40GHz• RAM: 32GB• OS: Ubuntu 12.04 LTS 64-bit• Storage: HDD, Raid10
Software
Magento• Version: 1.13.1 with recommended patches• All Enterprise Edition default features enabled• Flat catalog enabled• All caches enabled and Redis is used• CSS and JS compiled• Magento Cron set to 5 minutes intervals
Software
PHP• 5.3.10-1ubuntu3.11 (20090626)• 5.4.26-1+deb.sury.org~precise+1 (20100525)• 5.5.11+dfsg-3+deb.sury.org~precise+ (20121113)nginx• version: 1.1.19DB• MariaDB 10.0.10 (flavour of MySQL)
Test tools and scenariosTools:• Siege 2.70• ApacheBench, Version 2.3• cURL 7.22.0• GNU bash 4.2.25Scenarios:• 5 products per cart• No third-party integrations• HTTPS disabled
Results03
Home Page Response Time
Home Page Throughput
+14%
+20%+18%
18930 rpm
Category Page Response
-13%-17% -15%
Category Page Throughput
+15%
+20%+18%
Product Page Response Time
-10%
-14%-12%
2939 ms
Product Page Throughput
+11%
+16%+14%
Product Page (Promo) Response Time
-13%-18%
-15%
Product Page (Promo) Throughput
+15%
+23%+18%
Orders Throughput (100 users)
+19%
+27% +26%
Orders Scaling Profile
Risks and Tips04
Risks
• Custom code and extensions compatibility • APC is not always stable on PHP 5.4• PHP 5.4 is not widely supported by hosting
providers
Tips
• Magento PHP 5.4 Patch: http://www.magentocommerce.com/knowledge-base/entry/php54-patch
• Official PHP migration guides• PHP Compatibility: https://github.
com/wimg/PHPCompatibility
• Zend OPcache instead of APC
Conclusion05
Hardware utilization
PHP 5.4/5.5• Web server:
▪ +25% Net Tx▪ +25% disk I/O▪ -16% CPU utilization▪ -12% RAM consumption
• DB server:▪ +20% NetTx▪ +30% disk I/O
• Redis/MySQL: difference can be negligible
Pros
• PHP 5.4 is free ☺• PHP 5.4 is stable• Visible performance increase
▪ Up to 20% general performance improvement▪ Up to 25% orders throughput increase
• Easy to upgrade infrastructure• Magento officially supports PHP 5.4 for the last
three major releases
Cons
• Efforts to make the custom code compatible• Support by extensions developers
Q&A
Evgeniy Kulishemail ekulish@ebay.com
Reid Parhamemail reid@copiousinc.com
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