The following functions available in 3ds Max 2010 and higher let you query the memory usage, face count and timing of the Direct3D Mesh Cache.
<float>getD3DMeshAllocated() Returns the Direct3D Mesh Cache memory allocation in Megabytes.
<integer>getD3DMeshAllocatedFaces() Returns the Direct3D Mesh Cache face count.
<float>getD3DTimer <integer>timer For internal use only.
In addition, the Direct3D Mesh Cache creation is multi-threaded since 3ds Max 2010.
The following function can be used to switch back to the old single-threaded cache creation mode for compatibility reasons:
<boolean>SetUseOldD3DCache <boolean>useOld When the argument is true, enables single-threaded cache creation.
When the argument is false, enables multi-threaded cache creation (default).
Returns true on success, false on failure.