PHP performance optimization (1) Stress testing tools

ab uses

<code>  Apache附带的压力测试工具ab，非常容易使用，并且完全可以摸你各种条件对Web服务器发起测试请求。ab可以直接在Web服务器本地发起测试请求，这对于需要了解服务器的处理性能至关重要，因为它不包括数据的网络传输时间以及用户PC本地的计算时间。。
</code>

to execute 1000 connections and 20 concurrent (parallel, simultaneous):
Syntax: ab -n 1000 -c 20 www.baidu.com

The results generated. What should be noted are the following:

§ Time taken for tests: How long did it take to execute in total. (The above 1000 times total How long)

§ Requests per second: How many connections can be processed on average per second.

webbench

can simulate up to 30,000 concurrent connections to test the load capacity of the website. Personally, I feel it is better than the ab stress testing tool that comes with Apache. Well, it’s very easy to install and use.

Webbench installation

<code>wget http://home<span>.tiscali</span><span>.cz</span>/cz210552/distfiles/webbench-<span>1.5</span><span>.tar</span><span>.gz</span>
tar zxvf webbench-<span>1.5</span><span>.tar</span><span>.gz</span>
cd webbench-<span>1.5</span>
make && make install
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How to use webbench
webbench -c 500 -t 30 http://127.0.0.1/test.php
Parameter description of webbench
-c represents the number of concurrencies, -t represents time (seconds)

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The above has introduced the PHP performance optimization (1) Stress Testing Tool, including various aspects. I hope it will be helpful to friends who are interested in PHP tutorials.