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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