So, I'm having this problem that I described in a similar bug for the lockable-resource plugin (JENKINS-45138). I said to myself, "oh, hey, I remember being able to throttle executions on a per-agent basis!"

Imagine my surprise when I hit the documentation and find that throttle is only applicable inside a step.

I need to acquire, use, and cleanup exclusive access to a resource on each agent. Will throttle work how I expect?

step('foo') {
    throttle(['foo-label'])
    bat '... acquire the resource...'
    bat '... use the resource...'
}
post {
    always {
        bat '... cleanup the resource...'
    }
}