For our MacOS 10.10.1 slave on the Jenkins "Build Executor Status" page, we see Free Swap Space is "0". The VM has 4GB of allotted physical memory and ~37GB of free disk space. Swap is enabled, but we would rarely need it with 4GB of allotted physical memory. On the Mac slave VM, under Activity Monitor, it shows no swap being used and plenty of physical memory available.

Our other MacOS slave, which is 10.8 does not show as free swap 0. Is this just an OS issue (Jenkins monitoring doesn't like 10.10.1) or is this a bug somewhere? We tried disabling and re-enabling swap, but that had no effect.