On Mon, Nov 28, 2011 at 1:51 PM, Michael Mol <mike...@gmail.com> wrote: > On Mon, Nov 28, 2011 at 12:26 AM, Pandu Poluan <pa...@poluan.info> wrote:
[snip] > FWIW, I strongly suspect that N should be your number of *logical* > cores, not your number of physical cores. I believe most of the > overhead ...and finishing my sentence. I believe most of the overhead comes from context switching between two threads, and hyperthreading adds CPU hardware specifically for the purpose of avoiding that costly context switch when controlling which thread's instructions get sent up the pipeline. -- :wq
