Re: /proc/cpuinfo Never Lies (or does it?)
"For me, a core on a multi-core CPU has always meant that I can run an additional thread without impacting performance. "
Doesn't work like that on modern Intel processors. The cores share a very important resource - the processor cooling. So if you run an additional thread, temperature goes up, and you need to reduce the clock rate.
Doesn't work for any modern processor. The cores share a very important resource - RAM. If you add more cores, your performance per core goes down when the cores start fighting over who can access RAM first. (L2 and L3 cache are also often shared).
Biting the hand that feeds IT
