By default, Jenkins is configured to run one “build executor” for each core in the server. This is a reasonable default for CPU-bound workloads (like most compile/test jobs), but it’s a bit pessimistic in my case – CI pipelines for my Chef cookbooks.
Fortunately, the executor count can be increased with a small Groovy script – this thread on StackOverflow told me what I needed to know.
If you’re already using the Jenkins cookbook to manage your Jenkins server, you can run two executors per core like so:
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