性能测试工具nGrinder介绍

安装

以linux，这里采用的版本是centos 6 64bit，性能测试工具不建议在Windows上部署。

下载：

https://github.com/naver/ngrinder/releases/

选择最后面的war包。

服务器端启动：

# java -XX:MaxPermSize=200m -jar ngrinder-controller-3.4.war --port 8058

这样nGrinder的管理页面就部署好，你可以简单的把ngrinder-controller的功能理解为性能测试展示和控制，后面会进行详细介绍。

打开网址：

http://183.131.22.113:8058

默认用户名和密码都为admin

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注意：这里的"Remember me"是短暂停留，页面关闭之后还是需要重新登陆的。

登录后点击右上角的admin，选择"下载代理"

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拷贝下载的文件到agent，现在可以简单理解为agent的功能为执行性能测试，通常不建议与ngrinder-controller部署在同一台，同一台机器也不建议部署多个agent。

客户端启动：

# nohup ./run_agent.sh  &

快速入门

  • 输入网址 http://172.30.249.160

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  • 配置

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  • jython脚本

点击 REV:HEAD，可以看到jython脚本

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  • 运行

点击"复制并运行"

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  • 查看结果

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点击"详细测试结果"

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参考资料

测试配置

注意agent RAM up配置是基于进程的，一般每个agent有10个进程。

脚本

首先要配置：grinder.properties，通常在用户目录的.ngrinder目录下。

脚本使用Grinder脚本API，参见：http://grinder.sourceforge.net/g3/script-javadoc/index.html

脚本中的grinder对象是ScriptContext实例，这样就可以获取上下文信息。

Hello World

# Hello World
#
# A minimal script that tests The Grinder logging facility.
#
# This script shows the recommended style for scripts, with a
# TestRunner class. The script is executed just once by each worker
# process and defines the TestRunner class. The Grinder creates an
# instance of TestRunner for each worker thread, and repeatedly calls
# the instance for each run of that thread.

from net.grinder.script.Grinder import grinder
from net.grinder.script import Test

# A shorter alias for the grinder.logger.info() method.
log = grinder.logger.info

# Create a Test with a test number and a description. The test will be
# automatically registered with The Grinder console if you are using
# it.
test1 = Test(1, "Log method")

# Instrument the info() method with our Test.
test1.record(log)

# A TestRunner instance is created for each thread. It can be used to
# store thread-specific data.
class TestRunner:

    # This method is called for every run.
    def __call__(self):
        log("Hello World")

Simple HTTP example

# A simple example using the HTTP plugin that shows the retrieval of a
# single page via HTTP. The resulting page is written to a file.
#
# More complex HTTP scripts are best created with the TCPProxy.

from net.grinder.script.Grinder import grinder
from net.grinder.script import Test
from net.grinder.plugin.http import HTTPRequest

test1 = Test(1, "Request resource")
request1 = HTTPRequest()
test1.record(request1)

class TestRunner:
    def __call__(self):
        result = request1.GET("http://localhost:7001/")

        # result is a HTTPClient.HTTPResult. We get the message body
        # using the getText() method.
        writeToFile(result.text)

# Utility method that writes the given string to a uniquely named file.
def writeToFile(text):
    filename = "%s-page-%d.html" % (grinder.processName, grinder.runNumber)

    file = open(filename, "w")
    print >> file, text
    file.close()

更多脚本，参见： http://grinder.sourceforge.net/g3/script-gallery.html

参考资料

links