Ok, we see that the patch does "miracles" for heavy CPU load by compiling with many processes but...
How about heavy disk or USB storage I/O?
Will this patch improve desktop responsiveness when the CPU is waiting for I/O operations? If it's improving that too, that will be real benefit for most users as probably most of us use mlocate, strigi indexing or anything else indexing files in background or at least data copy between disk and usb devices.

And what about compiz/kwin desktop effects?
The video is showing desktop responsiveness without desktop effects.