== Spring Cloud Sleuth Benchmarks
This module can run benchmarks using the following tools
- JMH
- JMeter
=== How to run it?
In the root folder inside the `scripts` folder there are the following benchmark scripts:
- runJmhBenchmark.sh
- runJmeterBenchmarks.sh
Just execute them from the root folder like this:
[source]
----
./scripts/runJmeterBenchmarks.sh
./scripts/runJmhBenchmarks.sh
----
=== How do they work?
For JMH we're building a shaded JAR file that is next executed.
For JMeter we're running two applications, one with Sleuth, one without with Spring Boot
Maven Plugin. Next a Maven JMeter plugin is executed that loads the `*.jmx` files, starts
JMeter and prints out the results. At the end Spring Boot Maven Plugin stops the applications.
=== What are we testing?
For now we're testing the performance impact of the following:
- our custom Trace HTTP filter
- instrumentation of controllers - `@Callable` returning and the sync one
- instrumentation of RestTemplate
- `@Async` annotated methods
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