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PHP7 - For Its Best Performance

Xinchen Hui
Xinchen Hui

The document discusses PHP7 and how to optimize it for best performance. It notes that PHP7 is up to twice as fast as PHP5.6 and uses significantly less memory. It then provides several recommendations for further optimizing PHP7 performance, such as using Unix domain sockets, opcache file caching, profile guided optimization, and huge pages. Real-world benchmarks from companies show PHP7 provides 15-40% better performance.

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PHP7 For Its Best Performance @laruence
SELF INTRODUCTION Author of Yaf, Yar, Yac, Yaconf, Taint Projects Maintainer of Opcache, Msgpack, PHP-Lua Projects PHP Core Developer Since 2011 Zend Consultant Since 2013 One of PHP7 Core Developers: Dmitry Stogov, Xinchen Hui, Nikita Popov Chief Software Architect at Lianjia Since 2015
W3Techs.com 100 Released in 1994 by Rasmus Lerdorf 20+ Years Programming Language Most Popular Web Service Program Language PHP7 is Released at 3 Dec 2015 Latest Version is PHP7.0.4 PHP
For Unicodes Supports Started in 2005, Die in 2010 Most Features Goes Into PHP-5.3 ++PHP5 = PHP7 PHP6
Based on PHP-5.5 JIT-Opcache Project One year long work for better PHP performance PHP7
Memory Optimization - PHP spends 20% time on Memory Reduce Memory allocations Reduce Memory Usage Reduce Memory Indirection Cache friendly PHPNG zval gc_infoblock_info 0 16 40 56 Zval in PHP5 zval 0 16 Zval in PHP7
Improved Performance: PHP 7 is up to twice as fast as PHP 5.6 Significantly Reduced Memory Usage Abstract Syntax Tree Consistent 64-bit Support Improved Exception Hierarchy Many Fatal Errors Converted to Exceptions The Null Coalescing Operator (??) Return & Scalar Type Declarations Anonymous Classes And More.. PHP7
BENCHMARK
REAL-LIFE APPLICATION BENCH
PHP5.6 VS PHP7
PERFORMANCE COMPARISON BY ULABOX
PERFORMANCE COMPARISON BY ATRAPALO
PERFORMANCE COMPARISON BY WEIBO 15% 20% 25% 30% 35% 40% 45% 12/13/15 12/14/15 12/15/15 12/16/15 12/17/15 12/18/15 12/19/15 12/20/15 12/21/15 12/22/15 12/23/15 12/24/15 12/25/15 12/26/15 12/27/15 12/28/15 12/29/15 12/30/15 12/31/15 01/01/16 01/02/16 01/03/16 01/04/16 01/05/16 01/06/16 01/07/16 01/08/16 01/09/16 01/10/16 01/11/16 01/12/16 01/13/16 01/14/16 01/15/16 01/16/16 01/17/16 01/18/16 01/19/16 01/20/16 01/21/16 01/22/16 01/23/16 01/24/16 01/25/16 01/26/16 01/27/16 01/28/16 01/29/16 01/30/16 01/31/16 02/01/16 02/02/16 02/03/16 02/04/16 02/05/16 CPU : User Time 0 1 2 3 4 5 6 7 8 DateTime 12/14/15 13 12/15/15 9 12/16/15 5 12/17/15 1 12/17/15 21 12/18/15 17 12/19/15 13 12/20/15 9 12/21/15 5 12/22/15 1 12/22/15 21 12/23/15 17 12/24/15 13 12/25/15 9 12/26/15 5 12/27/15 1 12/27/15 21 12/28/15 17 12/29/15 13 12/30/15 9 12/31/15 5 1/1/16 1 1/1/16 21 1/2/16 17 1/3/16 13 1/4/16 9 1/5/16 5 1/6/16 1 1/6/16 21 1/7/16 17 1/8/16 13 1/9/16 9 1/10/16 5 1/11/16 1 1/11/16 21 1/12/16 17 1/13/16 13 1/14/16 9 1/15/16 5 1/16/16 1 1/16/16 21 1/17/16 17 1/18/16 13 1/19/16 9 1/20/16 5 1/21/16 1 1/21/16 21 1/22/16 17 1/23/16 13 1/24/16 9 1/25/16 5 1/26/16 1 1/26/16 21 1/27/16 17 1/28/16 13 1/29/16 9 1/30/16 5 1/31/16 1 1/31/16 21 2/1/16 17 2/2/16 13 2/3/16 9 2/4/16 5 2/5/16 1 Used Memory
PHP 7 is Up to Twice as Fast as PHP 5.6 Significantly Reduced Memory Usage However, It Could Be Faster MAKE PHP7 FASTER
Unix Domain Socket FastCGI Params Use Static PM Less Configuration is Better Opt Children Number = Total CPU Resource / CPU Usage Per Request Of course, 400 children also make sense NGNIX+PHP-FPM
Deploying Document Root in Tmpfs Use Fixed Size Memory Data Could Be Lost After Reboot USE TMPFS
USE LATEST COMPILER More Compiler Optimization GCC4.8 - Global Registers %r14 : execute_data %r15: opline Up to 10% Performance Improvement
Using PGO is simple in PHP7 USE PGO Profile Guided Optimization Optimize for Specific Cases Optimization According to Data Collected in Runtime Up to 7% Performance Improvement Each Coin Has Two Side
Persistent Secondary File-Based Cache for OPCache Shared Memory is Limited Cache Can Live Across Processes opcache.file_cache=/tmp/ opcache.file_cache_only? OPCACHE FILE CACHE
Hugepages - Reduce TLB Miss Opcache.huge_code_page - Reduce iTLB miss Shared Memory Regular Memory Allocations Note: SIGBUS on Forking USE_ZEND_ALLOC_HUGE_PAGES = 1 PHP7.0.5 USE HUGEPAGES
Always Do Your Own Benchmark
http://w3techs.com/technologies/overview/programming_language/all http://talks.php.net/confoo16#/perf2014 https://carlosbuenosvinos.com/first-tests-with-php7-in-production-at-atrapaloeng/ https://techblog.badoo.com/.../how-badoo-saved-one-million-dollars-switching-to-php7/ Links
Q&A

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PHP7 - For Its Best Performance

  • 1. PHP7 For Its Best Performance @laruence
  • 2. SELF INTRODUCTION Author of Yaf, Yar, Yac, Yaconf, Taint Projects Maintainer of Opcache, Msgpack, PHP-Lua Projects PHP Core Developer Since 2011 Zend Consultant Since 2013 One of PHP7 Core Developers: Dmitry Stogov, Xinchen Hui, Nikita Popov Chief Software Architect at Lianjia Since 2015
  • 3. W3Techs.com 100 Released in 1994 by Rasmus Lerdorf 20+ Years Programming Language Most Popular Web Service Program Language PHP7 is Released at 3 Dec 2015 Latest Version is PHP7.0.4 PHP
  • 4. For Unicodes Supports Started in 2005, Die in 2010 Most Features Goes Into PHP-5.3 ++PHP5 = PHP7 PHP6
  • 5. Based on PHP-5.5 JIT-Opcache Project One year long work for better PHP performance PHP7
  • 6. Memory Optimization - PHP spends 20% time on Memory Reduce Memory allocations Reduce Memory Usage Reduce Memory Indirection Cache friendly PHPNG zval gc_infoblock_info 0 16 40 56 Zval in PHP5 zval 0 16 Zval in PHP7
  • 7. Improved Performance: PHP 7 is up to twice as fast as PHP 5.6 Significantly Reduced Memory Usage Abstract Syntax Tree Consistent 64-bit Support Improved Exception Hierarchy Many Fatal Errors Converted to Exceptions The Null Coalescing Operator (??) Return & Scalar Type Declarations Anonymous Classes And More.. PHP7
  • 13. PERFORMANCE COMPARISON BY WEIBO 15% 20% 25% 30% 35% 40% 45% 12/13/15 12/14/15 12/15/15 12/16/15 12/17/15 12/18/15 12/19/15 12/20/15 12/21/15 12/22/15 12/23/15 12/24/15 12/25/15 12/26/15 12/27/15 12/28/15 12/29/15 12/30/15 12/31/15 01/01/16 01/02/16 01/03/16 01/04/16 01/05/16 01/06/16 01/07/16 01/08/16 01/09/16 01/10/16 01/11/16 01/12/16 01/13/16 01/14/16 01/15/16 01/16/16 01/17/16 01/18/16 01/19/16 01/20/16 01/21/16 01/22/16 01/23/16 01/24/16 01/25/16 01/26/16 01/27/16 01/28/16 01/29/16 01/30/16 01/31/16 02/01/16 02/02/16 02/03/16 02/04/16 02/05/16 CPU : User Time 0 1 2 3 4 5 6 7 8 DateTime 12/14/15 13 12/15/15 9 12/16/15 5 12/17/15 1 12/17/15 21 12/18/15 17 12/19/15 13 12/20/15 9 12/21/15 5 12/22/15 1 12/22/15 21 12/23/15 17 12/24/15 13 12/25/15 9 12/26/15 5 12/27/15 1 12/27/15 21 12/28/15 17 12/29/15 13 12/30/15 9 12/31/15 5 1/1/16 1 1/1/16 21 1/2/16 17 1/3/16 13 1/4/16 9 1/5/16 5 1/6/16 1 1/6/16 21 1/7/16 17 1/8/16 13 1/9/16 9 1/10/16 5 1/11/16 1 1/11/16 21 1/12/16 17 1/13/16 13 1/14/16 9 1/15/16 5 1/16/16 1 1/16/16 21 1/17/16 17 1/18/16 13 1/19/16 9 1/20/16 5 1/21/16 1 1/21/16 21 1/22/16 17 1/23/16 13 1/24/16 9 1/25/16 5 1/26/16 1 1/26/16 21 1/27/16 17 1/28/16 13 1/29/16 9 1/30/16 5 1/31/16 1 1/31/16 21 2/1/16 17 2/2/16 13 2/3/16 9 2/4/16 5 2/5/16 1 Used Memory
  • 14. PHP 7 is Up to Twice as Fast as PHP 5.6 Significantly Reduced Memory Usage However, It Could Be Faster MAKE PHP7 FASTER
  • 15. Unix Domain Socket FastCGI Params Use Static PM Less Configuration is Better Opt Children Number = Total CPU Resource / CPU Usage Per Request Of course, 400 children also make sense NGNIX+PHP-FPM
  • 16. Deploying Document Root in Tmpfs Use Fixed Size Memory Data Could Be Lost After Reboot USE TMPFS
  • 17. USE LATEST COMPILER More Compiler Optimization GCC4.8 - Global Registers %r14 : execute_data %r15: opline Up to 10% Performance Improvement
  • 18. Using PGO is simple in PHP7 USE PGO Profile Guided Optimization Optimize for Specific Cases Optimization According to Data Collected in Runtime Up to 7% Performance Improvement Each Coin Has Two Side
  • 19. Persistent Secondary File-Based Cache for OPCache Shared Memory is Limited Cache Can Live Across Processes opcache.file_cache=/tmp/ opcache.file_cache_only? OPCACHE FILE CACHE
  • 20. Hugepages - Reduce TLB Miss Opcache.huge_code_page - Reduce iTLB miss Shared Memory Regular Memory Allocations Note: SIGBUS on Forking USE_ZEND_ALLOC_HUGE_PAGES = 1 PHP7.0.5 USE HUGEPAGES
  • 21. Always Do Your Own Benchmark
  • 22. http://w3techs.com/technologies/overview/programming_language/all http://talks.php.net/confoo16#/perf2014 https://carlosbuenosvinos.com/first-tests-with-php7-in-production-at-atrapaloeng/ https://techblog.badoo.com/.../how-badoo-saved-one-million-dollars-switching-to-php7/ Links
  • 23. Q&A
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