On Wed, Aug 20, 2014 at 1:36 PM, Shaun Thomas <sthomas@xxxxxxxxxxxxxxxx> 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 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance