Can the “Throttle Concurrent Builds Plugin" be used to reliably prevent concurrent builds in a multi-server, "build farm" setting?

[Robert Kruck]

Can the “Throttle Concurrent Builds Plugin" be used to reliably prevent concurrent builds in a multi-server, "build farm" setting?

Example: if the Build Farm consisted of Master Server, Slave Server 1, Slave Server 2, Slave Server 3 - could the master server request three builds, for three versions of the same software, and all these builds (1 per server) would launch concurrently? (Max Concurrent Builds, Max Concurrent Builds Per Node both set to "1").

Also, can the “Throttle Concurrent Builds Plugin" handle load balancing, choosing the "least busy" of the available servers?

Or would a build of a given type be launched on the same server where it was most recently launched?