Hi Lucas, > No,the reason that you see 2 times as many processors as really are > installed is the hyperthreading feature of the Xeon (see > http://www.infoworld.com/infoworld/article/02/02/25/020225plxeon_1.html) > > I turned it off (in the BIOS). The machine I tested on has 2 (pysical) > processors installed. Turning on or off does not influence the pystone > number significantly..
Sorry for the confusion - that was what I wanted to say: from my perspective it is unlikely that the performance decrease seen on your dual processor CPU is related to having two processors. Because python thinks it has two processors on my machine, too (because of hyperthreading) and should exhibit the same decrease then (IF it would be coupled to two processors). Yours, Mark -- http://mail.python.org/mailman/listinfo/python-list