bzm - Weighted Switch Controller not processing all samplers in a subgroup

[Andre]

Hi,

I'm trying to use the new bzm - Weighted Switch Controller to randomise some transactions however some of my transactions consist of multiple samplers and others are a single sampler. The documentation on the new sampler is unfortunately fairly sparse.

I'd expect that the switch controller would simply direct a thread randomly to a child item and the thread would then finish processing all samplers it finds in that child item before being sent to another child item.

Currently it seems to execute a single sampler within a child item regardless of however many there are and then gets randomized again and sent to another child item.

An example test plan:

Thread Group

  > bzm - Weighted Switch Controller (50/50 weighting)

    > Simple Controller

      > SubSampler1

      > SubSampler2

    > Sampler3

If I loop the above 10 times, the results look like:

SubSampler1

Sampler3

SubSampler2

Sampler3

Sampler3

...

With 9 (?!) results total.

However, I'd expect the results to look more like this:

SubSampler1

SubSampler2

Sampler3

SubSampler1

SubSampler2

Sampler3

Sampler3

...

With 15 results total (5 runs of the simple controller yielding 10 sample results plus 5 samples from Sampler3)

What's the expected behaviour or the Weighted Switch Controller here? Does it effectively only work correctly if it exclusively has samplers as direct child items?

[atchakr...@gmail.com]

I am seeing similar issues with weighted switch controller. any update on this post?

[gli...@gmail.com]

As per the documentation:

This plugin is experimental and unstable. It is not recommended to use it.

So I would recommend using either Throughput Controller or Switch Controller instead. See Running JMeter Samplers with Defined Percentage Probability article for example configurations an usage instructions.