vdaburon opened a new pull request, #6705:
URL: https://github.com/apache/jmeter/pull/6705
## Description
Add a new unmodifiable JMeter Thread variable named
"__jmv_THREAD_START_TIME_ITERATION"
## Motivation and Context
It is interesting to know the start timestamp of a thread iteration to
calculate **cadences or pacing**.
## How Has This Been Tested?
Yes, add a groovy sampler first sampler of the thread group and compute the
delta between the value in the variable __jmv_THREAD_START_TIME_ITERATION and
the current time System.currentTimeMillis() in the groovy sampler.
Groovy code:
```groovy
long currentTime = System.currentTimeMillis();
long startThreadIter =
Long.parseLong(vars.get("__jmv_THREAD_START_TIME_ITERATION"));
long delta = currentTime - startThreadIter;
return delta;
```
Results delta = 0 or 1 ms
## Screenshots (if appropriate):
Show the new thread variable in the "Debug Sampler"
<img width="827" height="562" alt="show __jmv_THREAD_START_TIME_ITERATION in
debug sampler"
src="https://github.com/user-attachments/assets/7ae64df9-4866-43df-af4e-3443e5192435";
/>
Show the Groovy code in the View Results Tree, delta is usually 0 or 1 ms
(except for the first call which is a little longer)
<img width="1151" height="570" alt="show grrovy code to compute delta
between curret time and __jmv_THREAD_START_TIME_ITERATION"
src="https://github.com/user-attachments/assets/d52eac64-ef50-4faa-b2f4-08083128fc5e";
/>
## Types of changes
- New feature (non-breaking change which adds functionality)
Update documentation: functions.xml
add __jmv_THREAD_START_TIME_ITERATION
[style-guide]: https://wiki.apache.org/jmeter/CodeStyleGuidelines
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