In trying some memory pressure tests, guest OS is server2012 with 2GB RAM, I use the heavload tool to fill memory and leave only 512mb free in the guest VM OS. vSphere 5.1 does not appear to come back and reclaim that RAM after filling it and releasing the RAM.
On got very good results from TPS just running 4 of these guest VMS (2GB each) on a 6GB Nested vSphere 5.1 server (saved about 3,234mb) out of the 6GB.
Am I missing something here on how this should work? Attached is jpg file showing the guest memory usage from VMware perspective.
Thanks.