Site Performance, from Pinto to Ferrari

Transcript

1. Hello Saturday, September 17, 2011
2. This Slide Intentionally Left Blank Saturday, September 17, 2011
3. This One Too Saturday, September 17, 2011
4. Site Performance from Pinto to Ferrari Joseph Scott joseph@josephscott.org http://josephscott.org/ Saturday, September 17, 2011
5. http://josephscott.org/ joseph@josephscott.org @josephscott Find Me Saturday, September 17, 2011
6. The Pinto Saturday, September 17, 2011
7. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
8. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
9. http://www.flickr.com/photos/thomashawk/2466245846/ Saturday, September 17, 2011
10. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
11. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
12. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
13. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
14. http://www.flickr.com/photos/autohistorian/4439476737/ Saturday, September 17, 2011
15. The Ferrari Saturday, September 17, 2011
16. Saturday, September 17, 2011
17. Saturday, September 17, 2011
18. Steve Souders http://stevesouders.com/ Saturday, September 17, 2011
19. 2007 Saturday, September 17, 2011
20. 2009 Saturday, September 17, 2011
21. Why Did I Choose This Topic? Saturday, September 17, 2011
22. I Want My Site To Be Faster Saturday, September 17, 2011
23. I Want My Site To Be Faster Less Like A Pinto Saturday, September 17, 2011
24. I Want My Site To Be Faster More Like A Ferrari Saturday, September 17, 2011
25. How Fast Is It Now? Saturday, September 17, 2011
26. How Fast Is It Now? Tools For Measuring Site Performance Saturday, September 17, 2011
27. Tools webpagetest.org pagespeed.googlelabs.com Firefox & Firebug Chrome/Safari & Dev Tools HttpWatch Saturday, September 17, 2011
28. Where To Start? Saturday, September 17, 2011
29. Where To Start? http://www.webpagetest.org/ Saturday, September 17, 2011
30. webpagetest.org Test Location Browser Connection Speed Video Saturday, September 17, 2011
31. Browsers http://gs.statcounter.com/#browser_version-na-monthly-201106-201108-bar IE 8 still most commonly used browser (26.5% / 28.5%) Saturday, September 17, 2011
32. Connection Speed FIOS 20Mbps Saturday, September 17, 2011
33. http://www.webpagetest.org/result/110827_KZ_1EBDB/1/details/ Saturday, September 17, 2011
34. Which Part? Saturday, September 17, 2011
35. Saturday, September 17, 2011
36. Saturday, September 17, 2011
37. The Initial Request Get the source for the page Saturday, September 17, 2011
38. The Initial Request Get the source for the page 0.113 seconds Saturday, September 17, 2011
39. The Initial Request DNS Lookup: 5 ms Initial Connection: 47 ms Time to First Byte: 57 ms Content Download: 4 ms Bytes In (downloaded): 9.6 KB Bytes Out (uploaded): 0.4 KB Saturday, September 17, 2011
40. Requests Per Page November 2010: 69 August 2011: 76 http://www.stevesouders.com/blog/2011/08/17/http-archive-nine-months/ Saturday, September 17, 2011
41. Saturday, September 17, 2011
42. Saturday, September 17, 2011
43. Thinking Clearly About Performance http://carymillsap.blogspot.com/2010/02/thinking- clearly-about-performance.html Saturday, September 17, 2011
44. Average Lies pg3, Exhibit 1 List A List B 0.924 0.796 0.928 0.798 0.954 0.802 0.957 0.823 0.961 0.919 0.965 0.977 0.972 1.076 0.979 1.216 0.987 1.273 1.373 1.320 Saturday, September 17, 2011
45. Aim For Consistent Performance Saturday, September 17, 2011
46. Saturday, September 17, 2011
47. Know Your Limits Calculate the theoretical best performance for your setup Saturday, September 17, 2011
48. Know Your Limits Calculate the theoretical best performance for your setup What ever you actually end up with will be slower than that Saturday, September 17, 2011
49. Moving Up The Stack Saturday, September 17, 2011
50. The Stack Network Saturday, September 17, 2011
51. The Stack Network Server Hardware Saturday, September 17, 2011
52. The Stack Network Server Hardware Operating System Saturday, September 17, 2011
53. The Stack Network Server Hardware Operating System HTTP Saturday, September 17, 2011
54. The Stack Network Server Hardware Operating System HTTP PHP Saturday, September 17, 2011
55. The Stack Network Server Hardware Operating System HTTP PHP MySQL Saturday, September 17, 2011
56. The Stack Network Server Hardware Operating System HTTP PHP MySQL WordPress Saturday, September 17, 2011
57. The Stack Network Server Hardware Operating System HTTP PHP MySQL WordPress Saturday, September 17, 2011
58. Apache remove any modules you aren’t using turn off host name lookups turn off FollowSymLinks turn off .htaccess (if you can) turn on compression (mod_deflate) tweak MaxClients HTTP - The Web Server Saturday, September 17, 2011
59. Apache - mod_pagespeed HTTP - The Web Server http://code.google.com/speed/page-speed/docs/module.html http://code.google.com/p/modpagespeed/ Saturday, September 17, 2011
60. HTTP - The Web Server Consider Alternatives Nginx Saturday, September 17, 2011
61. HTTP - The Web Server HTTP Compression Keep-alive support Correctly Configured Caching Saturday, September 17, 2011
62. ETag Survey HTTP/1.1 200 OK ETag: "cd7ac991ff11" Saturday, September 17, 2011
63. ETag Survey HTTP/1.1 304 NOT MODIFIED If-None-Match: "cd7ac991ff11" Saturday, September 17, 2011
64. ETag Survey ETags used by 136 of the top 1,000 U.S. sites http://josephscott.org/archives/2011/09/etag-survey/ Saturday, September 17, 2011
65. ETag Survey Of the 136 sites using ETags: 54 Worked Correctly (39.7%) 11 Sort of Worked (8%) 71 Broken/Useless (52.2%) Saturday, September 17, 2011
66. Understanding PHP Saturday, September 17, 2011
67. Understanding PHP Lifespan Read Parse Compile Execute Output .php Saturday, September 17, 2011
68. Understanding PHP Lifespan Read Parse Compile Execute Output Apache / mod_php .php Saturday, September 17, 2011
69. Understanding PHP Lifespan Read Parse Compile Execute Output FastCGI Nginx .php Saturday, September 17, 2011
70. Reading Open Read Close Saturday, September 17, 2011
71. Reading Avoid co$tly services like NFS Open Read Close Saturday, September 17, 2011
72. Parse hello.php <?php echo "Hello, World!\n" Parse error: syntax error, unexpected $end, expecting ',' or ';' in /tmp/hello.php on line 3 Saturday, September 17, 2011
73. Tokens $tokens = token_get_all( ' <?php echo "Hello, World!";' ); Saturday, September 17, 2011
74. foreach ( $tokens as $token ) { if ( is_array( $token ) ) { echo token_name( $token[0] ) . " ( {$token[2]} ) - {$token[1]}\n"; } else { echo "{$token}\n"; } } Saturday, September 17, 2011
75. T_OPEN_TAG ( 1 ) - <?php T_ECHO ( 1 ) - echo T_WHITESPACE ( 1 ) - T_CONSTANT_ENCAPSED_STRING ( 1 ) - "Hello, World!" ; Saturday, September 17, 2011
76. Compile Saturday, September 17, 2011
77. Branch analysis from position: 0 Return found filename: /tmp/hello.php function name: (null) number of ops: 3 compiled vars: none line # op fetch ext return operands ------------------------------------------------------------------------------- 2 0 ECHO 'Hello%2C+World%21%0A' 3 1 RETURN 1 2* ZEND_HANDLE_EXCEPTION Saturday, September 17, 2011
78. Execute Deceptively Simple Term •Includes all sorts of activity •Database / remote requests Saturday, September 17, 2011
79. Output •PHP can buffer output •Don’t forget about compression Saturday, September 17, 2011
80. Making PHP Faster Saturday, September 17, 2011
81. Making PHP Faster Read Parse Compile Execute Output .php Saturday, September 17, 2011
82. Making PHP Faster Read Parse Compile Execute Output .php APC Saturday, September 17, 2011
83. Making PHP Faster Read Parse Compile Execute Output .php opcode cache APC Saturday, September 17, 2011
84. PHP - opcode caching APC requests per second - increased 4x time per request - decreased 4x Saturday, September 17, 2011
85. Use An Opcode Cache (APC) Saturday, September 17, 2011
86. Use An Opcode Cache (APC)! Saturday, September 17, 2011
87. APC == Free Money Saturday, September 17, 2011
88. APC == Free Money Saturday, September 17, 2011
89. use an opcode cache (APC) use newer versions don’t use on static files (unless you really need to) consider output buffering be careful with preg_* functions profile your running code (Xdebug, VLD) don’t re-invent native PHP functions, they are likely faster than yours PHP Saturday, September 17, 2011
90. The Stack Network Server Hardware Operating System HTTP PHP MySQL WordPress Saturday, September 17, 2011
91. use InnoDB table type (unless you have a really good reason not to) use the slow query log use EXPLAIN on queries, learn what the output means double triple check your indexes learn about quirks MySQL Saturday, September 17, 2011
92. The Stack Network Server Hardware Operating System HTTP PHP MySQL WordPress Saturday, September 17, 2011
93. Saturday, September 17, 2011
94. “Free & open source, high-performance, distributed memory object caching system” in memory only, won’t survive a reboot key/value data store Memcached http://memcached.org/ Saturday, September 17, 2011
95. Memcached Object Cache Persistent data store for WordPress objects Reduces the number of database queries WordPress + Memcached http://wordpress.org/extend/plugins/memcached/ Saturday, September 17, 2011
96. I’m Batcache Saturday, September 17, 2011
97. Batcache Persistent data store for rendered pages WordPress + Memcached http://wordpress.org/extend/plugins/batcache/ Saturday, September 17, 2011
98. WP Super Cache http://wordpress.org/extend/plugins/wp-super-cache/ W3 Total Cache http://wordpress.org/extend/plugins/w3-total-cache/ WordPress Caching - Alternatives Saturday, September 17, 2011
99. But Wait, There’s More! Saturday, September 17, 2011
100. Master / Slave one way, asynchronous send writes to the master send reads to the slave supports multiple slaves, and chaining MySQL Replication Saturday, September 17, 2011
101. Drop in replacement for default DB class distributed reads and writes partition data WordPress + HyperDB http://wordpress.org/extend/plugins/hyperdb/ Saturday, September 17, 2011
102. What Could This Look Like? Saturday, September 17, 2011
103. What Could This Look Like? web & database Net Saturday, September 17, 2011
104. What Could This Look Like? web db Net Saturday, September 17, 2011
105. What Could This Look Like? web db memcached Net Saturday, September 17, 2011
106. What Could This Look Like? web db memcached Net memcached db Saturday, September 17, 2011
107. What Could This Look Like? web db memcached memcached db web load balancer web Saturday, September 17, 2011
108. slave just for backups multiple data centers task specific web servers Variations Saturday, September 17, 2011
109. When Things Go Wrong Saturday, September 17, 2011
110. Hire an Amazing SysAdmin Saturday, September 17, 2011
111. Questions? Saturday, September 17, 2011
112. http://josephscott.org/ joseph@josephscott.org @josephscott Find Me Saturday, September 17, 2011