I accidentally hit Enter before I finished typing my initial post, but you've got the gist... thanks.
Our interval is at stat level 1, and always has been. I wonder if this counter was recently moved from level one into level 3. On our end the change seems to coincide chronologically with a vSphere update from U1 to U2. If I'm not mistaken, our report stopped pulling this metric after that vSphere update, and before the ESXi hosts were updated from U1 to U2.
This doc still says level 1: http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.wssdk.apiref.doc%2Fmemory_counters.html
Where did your image come from?
