RE: [patch 10/10] Scheduler profiling - Use immediate values

Li, Tong N
2007-07-06T17:50:50Z

> Also cache misses in this situation tend to be much more than 48
cycles
> (even an K8 with integrated memory controller with fastest DIMMs is
> slower than that) Mathieu probably measured an L2 miss, not a load
from
> RAM.
> Load from RAM can be hundreds of ns in the worst case.
>

The 48 cycles sounds to me like a memory load in an unloaded system, but
it is quite low. I wonder how it was measured...

tong