run-jmh-benchmarks-hetzner

Automate JMH benchmarks on Hetzner by provisioning a CCX33 server, deploying the project, executing benchmarks with pre-load steps, and collecting results locally. The workflow ensures reproducible, isolated measurements and destroys the server to avoid ongoing costs.

Provisioning a Hetzner server for JMH benchmarks requires the hcloud CLI, an SSH key, an Ubuntu 24.04 server image, and local project compilation prerequisites. Environment configuration is also needed for optional S3 dataset loading.

Yes, comparing performance across code branches is a core use case. Provide the target git branch and module to provision a branch-named CCX33 server, run JMH benchmarks, and collect results for accurate performance comparisons.

The workflow handles server cleanup by destroying the Hetzner CCX33 server after collecting and storing results locally. This clean teardown ensures reproducible measurements and prevents ongoing cloud costs.

Yes, the JMH benchmark automation supports optional S3 dataset preparation and loading before execution. It also performs in-VM warmup and monitoring to ensure accurate benchmark measurements on the Hetzner server.