JMeter response time test component & multi interface concurrency

One 、 Assertion duration

Assertion duration ： Get the response data within a limited time , Timeout is also failure ;

e.g：1.5s No data available , Indicates that the response failed

The steps to add a controller are as follows ：

Two 、 Parameters on

Apply to（ Apply to ）：
1、Main sample and sub-samples（ Master sample and subsample ）： Acts on the parent node sampler and the corresponding child node sampler
2、Main sample only（ Master sample only ）： Works only on the parent node sampler
3、sub-samples only（ Subsamples only ）： Works only on child node samplers

3、 ... and 、 Synchro timer

Synchro timer ： Set the number of simulated user groups 5, amount to 5 Users （ Threads ） Concurrent

The steps to add a synchronization timer are as follows ：

Four 、 Parameters on

name ： Timer name , Users can fill it out by themselves

notes ： It can be filled but not filled

The number of simulated user groups ： Number of threads released per time . When set to 0 when , Equal to the number of users set in the thread group , When set to 20 when , That is, when the user reaches 20 Release at the same time when , When the set number is greater than the number of threads , Invalid settings （ The number cannot be set to be greater than the number of threads in the thread group ）

The timeout is in milliseconds ： When set to 0 when , That is, when the number of users reaches the set number, it will be released , Otherwise, we will wait , When set to 300 when , Then when time reaches 300 when , Release the collected threads , No more waiting

Synchro timer （Synchronizing Timer） Timeout setting requirements for ：  Timeout time > Number of request sets * 1000 / ( Number of threads / Thread load time )

5、 ... and 、 The use of synchronous timers

 a. If a request requires concurrency testing , You can add a synchronization timer under this request , Here's the picture

b. If several requests need to be concurrent at the same time , A synchronization timer can be added at the same level of the request , Here's the picture

c. If some threads need synchronization and concurrency , Under the test plan （ The thread group is the same level ） Add synchronous timer （ It is suitable for multi service mixed concurrent testing ） Here's the picture