Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3

On Wed, Aug 20, 2014 at 1:36 PM, Shaun Thomas <sthomas@optionshouse.com> wrote:
> That's so strange. Back when I did my Nehalem tests, we got a very strong
> 30%+ increase by enabling HT. We only got a hit when we turned off turbo, or
> forgot to disable power saving features.

In my experience, it is crucially important to consider power saving
features in most benchmarks these days, where that might not have been
true a few years ago. The CPU scaling governor can alter the outcome
of many benchmarks quite significantly.

--
Regards,
Peter Geoghegan