PHP performance optimization and php Optimization

PHP performance optimization and php Optimization

 

The figure below shows 100 concurrent requests with 1000 target addresses

 

 

 

 

 

Test

 

 

 

Two most important parameters: Requests per second: Number of Requests received per second. Here, 101 Requests are received per second.

Time per request: the Time consumed by a request, which is 9 milliseconds

The larger the first parameter, the better. The smaller the second parameter, the better.

 

 

Optimization Method-language-level performance optimization 1

 

 

 

PHP Code Execution Process:

 

PHP code is scanned row by row through the zend engine. It becomes a syntax that the zend engine can understand. transcoding is parsed into Opcodes and output after execution.

If you use more built-in functions, the scanning and understanding time will be much faster, the Opcodes will be less, and the execution will be faster.

 

Optimization Method-language-level performance optimization 2

 

 Optimization Method-language-level performance optimization 3

Test

The time php file name can be used to determine the execution time, focusing on the user value, that is, 24 Ms

 

 Optimization Method-language-level performance optimization 4

 

Optimization Method-language-level performance optimization 5

 

 

Optimization Method-language-level performance optimization 6

 

 

Optimization Method-language-level performance optimization 7

It is better to change it to this mode.

 

 

 Optimization Method-language-level performance optimization 8

 

 

Optimization Method-language-level performance optimization 9

 

 Optimization Method-peripheral problem Performance Optimization

 

Optimization Method-peripheral problem performance optimization 1

 

Common php overhead sequence: read/write memory <read/write database (read/write hard disk) <read/write disk <read/write network data (invisible Overhead: network latency)

 

Optimization Method-peripheral problem performance optimization 2

 

 Optimization Method-peripheral problem performance optimization 3

 

Optimization Method-peripheral problem performance optimization 4

 

Optimization Method-peripheral problem performance optimization 5

Parallel serial Modification

 

Optimization Method-peripheral problem performance optimization 6

 

Xhprof tool to analyze PHP Performance

This command can check whether the software is installed

 

Installation and Use of xhprof: Http://www.cnblogs.com/bluefrog/archive/2012/03/01/2374922.html

Usage illustration:

 

PHP performance bottlenecks

 

Finishing from MOOC network video tutorial: http://www.imooc.com/learn/205