First knowledge of JMeter

This article is on the Internet to see a video, think the teacher said better, tidy up ...

JMeter is an open-source performance testing tool, 100% is implemented by Java, its easy to install, download compressed package decompression, you can use.

I. Characteristics of the jmeter itself

1. Open source (free, this is a trend of many tools in the future bar)

2. Lightweight (relative LoadRunner several G, Jmeter30 a few m, small leverage)

3. More suitable for automation and continuous integration

4. Relatively small data, difficult to learn

Two. Principle of selection of performance test tools

1. Cost

A. Cost of tools

B. Cost of learning

2. Communication protocols

A. Protocol http,https,ftp,smtp commonly used in standard protocols, etc.

B. Free agreement Some companies own agreements, unclear ....

3. Vitality

A long-term maintenance of the updated version, with the Times ....

4. Cross-platform

LoadRunner part is can cross-platform, said no use, but saw a news said HP let it open source, long-term trial version Http://www.oschina.net/news/59345/loadrunner-free

JMeter is implemented by 100%java, so it's completely cross-platform

Three. JMeter official website to see

How many people did Apache save on the way to open source? Ah Ah ah ah ah ah ah

The 1.Jmeter supported protocols, though not LoadRunner, have their own unique features, such as Tcp,mongodb.

2.Jmeter is not a browser, JMeter will not be executed when the JS is received, so the response time of JMeter does not include JS execution time

3. I am currently writing this article time jmeter the latest is 2.13 version, support JDK1.6 and above version, but the teacher recommended JDK1.7 and above, because of HTTPS such a protocol JDK1.7 support better

Four. JMeter Directory

1.bin Directory--which contains many configuration files, properties files, start commands. Windows system, directly double-click Jmeter.bat, start successfully

2.lib Catalog-Contains a lot of external jar packages, ext contains some of JMeter's own jar packages

Five. JMeter page in Chinese and English

JMeter page of the Chinese translation is not very good, if you want to completely switch to English, in the bin directory Jmeter.properties (jmeter important configuration) to find #language en, remove the previous # (note), restart JMeter

Six. JMeter the principle of simulated pressure

1. Performance testing tools--protocol and server interaction via protocol

2. Automated testing tools--object recognition technology

First knowledge of JMeter