/* pOrt80BKK */ - PHP Day - PHP Performance with APC + Memcached for Windows
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This document discusses using APC and Memcached to improve PHP performance on Windows. It provides an overview of how APC works as an opcode cache to improve performance by caching compiled PHP scripts. Memcached is described as an in-memory database for additional caching of data like sessions. The document outlines how to install and configure both APC and Memcached on Windows and provides benchmark results showing significant performance improvements from using the caches.
![Cache Theory ?
Req
1 Check
2 Miss
Compute
Store 3 Cache
4 Hit
Output
Miss - [Store] - Hit](https://image.slidesharecdn.com/php-day-phpperformance-100919065206-phpapp01/85/pOrt80BKK-PHP-Day-PHP-Performance-with-APC-Memcached-for-Windows-3-320.jpg)
![Benchmark
PHP Native PHP w/APC
Concurrency Level 10
Time taken for tests 60 seconds
Complete requests 298 914
Total transferred 643,149 bytes 1,962,675 bytes
HTML transferred 516,971 bytes 1,582,035 bytes
Requests per second 4.91 [#/sec] (mean) 15.21 [#/sec] (mean)
Time per request 2035.405 [ms] (mean) 657.623 [ms] (mean)
Time per request 203.541 [ms] 65.762 [ms]
(mean, across all concurrent requests)
Transfer rate 10.35 [KB/s] received 31.88 [KB/s] received](https://image.slidesharecdn.com/php-day-phpperformance-100919065206-phpapp01/85/pOrt80BKK-PHP-Day-PHP-Performance-with-APC-Memcached-for-Windows-19-320.jpg)
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/* pOrt80BKK */ - PHP Day - PHP Performance with APC + Memcached for Windows
- 1. <?PHP Performance ?> w/APC + Memcached for Windows @FordAntiTrust thaicyberpoint.com thaithinkpad.com thaihi5.com
- 3. Cache Theory ? Req 1 Check 2 Miss Compute Store 3 Cache 4 Hit Output Miss - [Store] - Hit
- 4. Type ? Fast Slow http://ralphlosey.files.wordpress.com/2007/06/ram.jpg http://www.pctechguide.com/images/31HardDrive.jpg
- 5. APC ? Alternative PHP Cache
- 6. Opcode Cache and Variables Cache Automatic update w/code changes Code not changes request and Simply Installation
- 7. Free & Open Source
- 8. PHP Flow Req • Scanning and Lexing (Plain Text to Tokens) • Parsing • Scanning • Lexing (Tokens to Expressions) • Parsing • Compilation • Compilation (Translated Expressions to Opcode) • Execution Execution (Opcode stacks are processed) Output
- 9. Normal PHP vs APC
- 10. Normal PHP vs APC Req • Scanning • Lexing • Parsing • Compilation Execution Output
- 11. Normal PHP vs APC Req APC hook • Scanning • Lexing • Parsing Miss • Compilation APC hook Store Opcode cache Execution Hit Output
- 12. Why ?
- 13. Why ? http://ralphschindler.com/
- 14. Why ? http://ralphschindler.com/
- 15. Installation • Windows (http://downloads.php.net/pierre/) – extension=php_apc.dll
- 16. Installation • Windows (http://downloads.php.net/pierre/) – extension=php_apc.dll • Basic PECL (http://pecl.php.net) – pecl install apc
- 17. Installation • Windows (http://downloads.php.net/pierre/) – extension=php_apc.dll Conf • Basic PECL (http://pecl.php.net) – pecl install apc
- 19. Benchmark PHP Native PHP w/APC Concurrency Level 10 Time taken for tests 60 seconds Complete requests 298 914 Total transferred 643,149 bytes 1,962,675 bytes HTML transferred 516,971 bytes 1,582,035 bytes Requests per second 4.91 [#/sec] (mean) 15.21 [#/sec] (mean) Time per request 2035.405 [ms] (mean) 657.623 [ms] (mean) Time per request 203.541 [ms] 65.762 [ms] (mean, across all concurrent requests) Transfer rate 10.35 [KB/s] received 31.88 [KB/s] received
- 20. Memcached
- 21. History “Developed by Danga Interactive for LiveJournal.com”
- 22. Memcached ? • a distributed memory object caching system with hash table
- 23. Memcached ? • a distributed memory object caching system with hash table
- 24. Memcached ? • a distributed memory object caching system with hash table • a generic two stage hashing system (clients and servers). Clients are written for specific application languages. Server is written in C
- 25. Memcached ? • a distributed memory object caching system with hash table • a generic two stage hashing system (clients and servers). Clients are written for specific application languages. Server is written in C
- 26. Memcached ? • a distributed memory object caching system with hash table • a generic two stage hashing system (clients and servers). Clients are written for specific application languages. Server is written in C • 85% of top 20 sites use memcached; 50%+ of top 5k sites uses Memcached
- 27. Memcached ? • a distributed memory object caching system with hash table • a generic two stage hashing system (clients and servers). Clients are written for specific application languages. Server is written in C • 85% of top 20 sites use memcached; 50%+ of top 5k sites uses Memcached
- 28. Limits (c/Hash Table) • Key : max 250 chars. • Values: max 1MB
- 29. Why Memcached ? • Scale-out – Machine – Process (Use different ports) • Memory faster than Disk • Allows for efficient use of your database • Can utilize existing network – Uses non-blocking network I/O (TCP/IP) • Very flexible • Client libraries in all major languages
- 31. “We use more than 800 servers supplying over 28 terabytes of memory to our users.” “total throughput achieved is 300,000 UDP req/s” by Paul Saab Saturday, December 13, 2008 at 2:43am • 8-core machines • 20-30% CPU usage. • scale memcached to 8 threads on an 8-core system • moved to UDP for get operations to reduce network traffic http://www.facebook.com/note.php?note_id=39391378919
- 33. Cache Memcached APC Memcached Instance Reverse Memcached Instance Memcached Instance Proxy Instance I n t e PHP Web App Web Server r n e Session Files t Memcached Memcached Memcached Instance Memcached Instance Master Slave Memcached Instance Memcached Instance Memcached Instance Instance CDN/DFS Instance DB
- 34. Installation & Used memcached binary packages • http://labs.northscale.com/memcached-packages/ 1. Unzip into a directory of choice 2. Open the shell of your choice (i.e. cmd.exe); cd into the directory 3. Run memcached.exe passing standard arguments. Sample C:memcachedmemcached.exe -m 128 -p 11211 -l 127.0.0.1 -d
- 35. PHP Session w/Memcached session.save_handler = files session.save_path = “C:/Windows/temp” TO session.save_handler = memcache session.save_path = “tcp://server:port “ OR ini_set('session.save_handler', 'memcache'); ini_set('session.save_path', 'tcp://server:port,tcp://server:port');
- 36. Coding ? (in PHP) /* OO API */ $memcacheObj = new Memcache; $memcacheObj->connect('memcache_host', 11211); /* set */ $memcacheObj->set('key', 'data', MEMCACHE_COMPRESSED, 50); / * get w/single key */ $var = $memcacheObj->get('key'); / * get w/multiple key */ $var = $memcacheObj->get(array('key1', 'key2')); $memcacheObj->close();
- 37. CMS ? • Drupal has Memcache API and Integration http://drupal.org/project/memcache • Wordpress has object cache http://mohanjith.net/blog/2008/10/using-memcached-with- wordpress-object-cache.html
- 38. Tips
- 39. Two Level Caching with Zend_Cache • Tagging System in Files Cache • Memcached Key used Tagging System
- 40. Two Level Caching - Workflow Req Compute Files Cache Memcached Output 1. Check 3. Store 2. Miss 4. Hit
- 42. Used Two Level with Zend_Cache
- 43. Ref. • Improving PHP Application Performance with APC http://www.slideshare.net/vortexau/improving-php-application- performance-with-apc-presentation • PHP Accelerators : APC vs Zend vs XCache with Zend Framework http://blog.digitalstruct.com/2007/12/23/php-accelerators-apc-vs-zend-vs- xcache-with-zend-framework/ • Scaling with memcached http://www.slideshare.net/acme/scaling-with-memcached • Gear6 and Scaling Website Performance: Caching Session and Profile Data with Memcached http://www.slideshare.net/gear6memcached/gear6-and-scaling-website- performance-caching-session-and-profile-data-with-memcached
- 44. Ref. (2) • PHP: Memcache - Manual http://th.php.net/manual/en/book.memcache.php • http://danga.com/memcached/ • http://pecl.php.net/package/memcache • http://www.socialtext.net/memcached/
- 45. Discussion Q&A
- 46. Thank you @FordAntiTrust http://www.slideshare.net/FordAntiTrust