graphics - How to query GPU Usage in DirectX? -

how query gpu usage in directx? directx 11. if ever did it, provide me code snippet?

process hakcer able this. see here: http://processhacker.svn.sourceforge.net/viewvc/processhacker/2.x/trunk/plugins/extendedtools/gpumon.c?revision=4927&view=markup

a similar question has been asked here: how calculate load on nvidia (cuda capable), gpu card?