Vcenter memory usage very high

Hi all,

My vcenter (version 5.1.0 build 1473063)  is consuming very high memory.

Initially 24 GB memory was available for vcenter and 96% was constantly used.

Then to test we tried by upgrading it to 30 GB RAM and again 96% memory is being constantly used. There is no increase or decrease in this usage when checked in resource monitor.

Its looking strange.

Do any of you experienced this issue and have solution for the same, please advice.