Thanks for the answer - I'm familiar with the methods, I've been a long time SR reader
What you say is logical - the traces include everything, Windows and pagefile and whatever.
The reason I asked is that so far NCQ seems to even hurt desktop use, which is quite counter-intuitive. My guess was that the Windows system files plus the swapfile would lead to the most random accesses in a desktop system, where NCQ should help - but I guess Windows' precaching systems actually group together most of the frequently used files.
Just a train of thought I had - thanks for the input.