htop lying about vmware-tools memory consumption

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http://serverfault.com – I am experiencing a problem where htop (top too) is incorrectly reporting the memory consumption of a process, in this case the vmware-tools service (highlighted below). I am colorblind and thought I might be mistaking used memory for cache, so I had someone else confirm it. In the screenshot it was only at 2529 MB, but it will continue to grow until all memory is consumed and the system becomes unstable. I tried re-installing vmware-tools but the issue persisted. It doesn't seem to be happening on any other VM. I have 2 questions: why is the memory consumption for vmtoolsd only listed at 0.1% (HowTos)