30 years of writing compilers and operating systems I have never seen a hog like Mavericks -- well, maybe out Microsoft, but that is to be expected.
I seriously question why I "upgraded" to Mavericks. In fact, the last serious desktop o/s from Apple was Snow Leopard which happens to be my favorite animal. Since then I have seen Apple consistently pump out "Vistas" like M$.
Sorry, man but there is not excuse for eating almost 8 GB of my memory on a MBP just for kernel processes. That's a BUG, not a feature. Sad, since Apple used to do a great job of memory management until they took the word "Computers" from the company name.
I know you kids will have a lot to say about this, but empirically speaking is your system slower?
Marty
ps) the keep working guys, my Social Security check needs you