On 30 March 2012 12:24, David C. Rankin <drankinatty@...> wrote: > On 03/30/2012 09:50 AM, Calvin Morrison wrote: >> >> Number of cores tends to perform better -j4 for 4 cores. The +1 thing has >> been >> disputed numerous times :) >> > > OK 4 then :) > > > -- > David C. Rankin, J.D.,P.E. > If you are an octoput ( 8 hands, 8 cores ) and 9 balls to juggle, you'll be constantly switching one for another, while the other 7 work away steadily. With a computer it will constantly be switching between two processes, causing some overhead. Calvin