Apr 16, 2012

1. High performance websites
An introduction into xDebug profiling, Kcachegrind and JMeter

2. About Us
 Axel Jung
 Software Developer
AOE media GmbH
 Timo Schmidt
 Software Developer
AOE media GmbH

3. Preparation
 Install Virtualbox and import the t3dd2012 appliance (User &
Password: t3dd2012)
 You will find:
• Apache with xdebug and apc
• Jmeter
• Kcachegrind
• PHPStorm
 There are two vhost:
• typo3.t3dd2012 and playground.t3dd2012

5. Can you build a new
website for me?
Yes, we can!

6. But I expect a lot of
visitors. Can you handle
them?
Yes, we can!

7. Really?
Yes, we can!

8. ...after inventing the next,
cutting edge, enterprise
architecture...

9. ...and some* days
of development...

10. The servers are not
fast enough for your application ;)

11. INSTALL AND CONFIGURE
xDebug

12. Install XDebug & KCachegrind
● Install xdebug
(eg. apt-get install php5-xdebug)
● Install kcachegrind
(eg. apt-get install kcachegrind)

13. ● Configuration in
(/etc/php5/conf.d/xdebug.ini on Ubuntu)
● xdebug.profiler_enable_trigger = 1
● xdebug.profiler_output_dir = /..
Configure xDebug

14. ● By request:
?XDEBUG_PROFILE
● All requests by htaccess:
php_value xdebug.profiler_enable 1
Profiling

15. Open with KCachegrind

16. OPTIMIZE WITH IDE AND MIND
KCachegrind

17. Analyzing Cachegrinds
● High self / medium self and
many calls =>
High potential for optimization
● Early in call graph & not needed =>
High potential for optimization

18. Hands on
● There is an extension „slowstock“
in the VM.
● Open:
„http://typo3.t3dd2012/index.php?id=2“ and analyze it with kcachegrind.

20. Total Time Cost 12769352
This code is very time consuming

21. SoapClient is instantiated everytime
=> move to constructor
Change 1 (SoapConversionRateProvider)

22. Before:
/**
* @param string $fromCurrency
* @param string $toCurrency
* @return float
*/
public function getConversionRate($fromCurrency, $toCurrency) {
$converter = new SoapClient($this->wsdl);
$in = new stdClass();
$in->FromCurrency = $fromCurrency;
$in->ToCurrency = $toCurrency;
$out = $converter->ConversionRate($in);
$result = $out->ConversionRateResult;
return $result;
}
Change 1 (SoapConversionRateProvider)

23. After:
/** @var SoapClient */
protected $converter;
/** @return void */
public function __construct() {
$this->converter = new SoapClient($this->wsdl);
}
/**
* @param string $fromCurrency
* @param string $toCurrency
* @return float
*/
public function getConversionRate($fromCurrency, $toCurrency) {
$in = new stdClass();
$in->FromCurrency = $fromCurrency;
$in->ToCurrency = $toCurrency;
$out = $this->converter->ConversionRate($in);
$result = $out->ConversionRateResult;
return $result;
}
Change 1 (SoapConversionRateProvider)

24. Total Time Cost 10910560 ( ~ -15%)
11,99 % is still much time :(

25. Change 2 (SoapConversionRateProvider)
● Conversion rates can be cached in APC cache to reduce webservice
calls.
– Inject „ConversionRateCache“ into
SoapConversionRateProvider.
– Use the cache in the convert method.

26. Change 2 (SoapConversionRateProvider)
Before:
/** @var SoapClient */
protected $converter;
/** @return void */
public function __construct() {
$this->converter = new SoapClient($this->wsdl);
}
/**
* @param string $fromCurrency
* @param string $toCurrency
* @return float
*/
public function getConversionRate($fromCurrency, $toCurrency) {
$in = new stdClass();
$in->FromCurrency = $fromCurrency;
$in->ToCurrency = $toCurrency;
$out = $this->converter->ConversionRate($in);
$result = $out->ConversionRateResult;
return $result;
}

27. Change 2 (SoapConversionRateProvider)
After:
/** @var Tx_Slowstock_System_Cache_ConversionRateCache */
protected $cache;
...
/** @param Tx_Slowstock_System_Cache_ConversionRateCache $cache */
public function injectRateCache(Tx_Slowstock_System_Cache_ConversionRateCache $cache) {
$this->cache = $cache;
}
…
public function getConversionRate($fromCurrency, $toCurrency) {
$cacheKey = $fromCurrency.'-'.$toCurrency;
if(!$this->cache->has($cacheKey)) {
$in = new stdClass();
$in->FromCurrency = $fromCurrency;
$in->ToCurrency = $toCurrency;
$out = $this->converter->ConversionRate($in);
$result = $out->ConversionRateResult;
$this->cache->set($cacheKey, $result);
}
return $this->cache->get($cacheKey);
}

28. Change 2 (SoapConversionRateProvider)
After:
/** @var Tx_Slowstock_System_Cache_ConversionRateCache */
protected $cache;
...
/** @param Tx_Slowstock_System_Cache_ConversionRateCache $cache */
public function injectRateCache(Tx_Slowstock_System_Cache_ConversionRateCache $cache) {
$this->cache = $cache;
}
…
public function getConversionRate($fromCurrency, $toCurrency) {
$cacheKey = $fromCurrency.'-'.$toCurrency;
if(!$this->cache->has($cacheKey)) {
$in = new stdClass();
$in->FromCurrency = $fromCurrency;
$in->ToCurrency = $toCurrency;
$out = $this->converter->ConversionRate($in);
$result = $out->ConversionRateResult;
$this->cache->set($cacheKey, $result);
}
return $this->cache->get($cacheKey);
}

29. Total Time Cost 5187627 ( ~ -50%)
Much better, but let's look on the call
graph... do we need all that stuff?

30. The kcachegrind call graph

31. The kcachegrind call graph
Do we need any TCA in Eid? No

32. Change 3 – Remove unneeded code:
(Resources/Private/Eid/rates.php):
Before:
tslib_eidtools::connectDB();
tslib_eidtools::initTCA();
$TSFE = t3lib_div::makeInstance('tslib_fe', $GLOBALS['TYPO3_CONF_VARS'], ...);
After:
tslib_eidtools::connectDB();
$TSFE = t3lib_div::makeInstance('tslib_fe', $GLOBALS['TYPO3_CONF_VARS'], ...);

33. Total Time Cost 2877900 ( ~ -45%)

34. Summary
● From 12769352 => 2877900 (-77%) with three changes 
● Additional Ideas:
● Reduce created fluid objects by implementing static fluid view helpers
(examples in fluid core)
● Cache reverse conversion rate (1/rate)
● Use APC Cache Backend for TYPO3 and Extbase caches

35. JMeter
http://jmeter.apache.org/

36. Why Jmeter?

37. BUILD A SIMPLE WEB TESTPLAN
JMeter

38. JMeter Gui

39. Add Thread Group

40. Name Group

41. Add HTTP Defaults

42. Set Server

43. Add HTTP Sampler

44. Set Path

45. Add Listener

46. Start Tests

47. View Results

48. RECORD WITH PROXY
JMeter

49. Add Recording Controller

50. Add Proxy Server

51. Exclude Assets

52. Start

53. Configure Browser

54. Browse

55. View results

56. ADVANCED
JMeter

57. Add Asserts

58. Match Text

59. Constant Timer

60. Set the Base

61. Summary Report

62. Graph Report

63. Define Variables

64. Use Variables

65. CSV Files

66. CSV Settings

67. Use CSV Vars

68. Command Line
• /…/jmeter -n -t plan.jmx -l build/logs/testplan.jtl -j
build/logs/testplan.log

69. Jenkins and JMeter

70. Detail Report

71. Use Properties
-p ${properties}

72. DISTRIBUTED TESTING
JMeter + Cloud

73. Start Server

74. jmeter.properties
remote_hosts=127.0.0.1

75. Run Slaves

76. AMAZON CLOUD
http://aws.amazon.com/

77. Create User

78. EC2

79. Create Key

80. Name Key

81. Download Key

82. Create Security Groups

83. Launch

84. Select AMI ami-3586be41

85. Minimum Small

86. Configure Firewall

87. Wait 15 Min

88. Get Adress

89. Connect

90. Start Cloud Tool

91. Start Instances

92. Wait for Slaves

93. Slave Log

95. Close JMeter

96. All Slave will be terminated

97. Slave AMI
• ami-963e0ce2
• Autostart JMeter im Server Mode

98. Costs

99. Want to know more?
European HQ: AOE media GmbH
Borsigstraße 3
65205 Wiesbaden
Tel.: +49 (0)6122 70 70 7 - 0
Fax: +49 (0)6122 70 70 7 - 199
E-Mail: postfach@aoemedia.de
Web: http://www.aoemedia.de