JMeter了解提升 [英] JMeter understanding ramp-up

问题描述

这是我的测试计划线程属性的配置:

This is the configuration of my test plan thread properties:

Number of Threads (users): 100
Ramp-up Period (in seconds): 10
Loop Count : Forever
Delay thread creation until needed: No
Scheduler: No

我将测试运行了一整夜，总持续时间为14小时7分钟(约50820秒).加载jtl文件后，摘要报告中显示的样本数为1050975.我尝试进行计算，但是我不明白它是如何带来这么多样本的.

I ran the test overnight with the total duration of 14 hours and 7 minutes (approximately 50820 seconds). After loading the jtl file, The number of samples shown in summary report is 1050975. I tried to compute but I can't understand how it came up with that many sample.

如果加速周期"是JMeter创建每次迭代的线程数所花费的时间，并且测试的持续时间为50820秒，那么我应该只有508200个样本(50820/10 * 100).我不知道循环计数"如何或是否会影响这一点.

If Ramp-up Period is the time taken by JMeter to create the number of threads per iteration and if the duration of the test is 50820 seconds, then I should have 508200 samples only ( 50820/10 * 100 ). I do not know how or if Loop Count affects this.

推荐答案

The ramp-up in the Thread Group is the time JMeter should take to start the total number of threads. In your situation this means that every 0.1 second a new thread starts giving 100 running threads after 10 seconds. These 100 threads perform your test iterations back-to-back, so after the ramp-up 100 threads run continously for the duration of the test.

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