On 9 May 2012, at 12:17 PM, Vince LaMonica wrote: > On May 9, 2012, at 10:46 AM, Bruce Carter wrote: > >>> On 9 May 2012, at 10:29 AM, Bruce Carter wrote: >>>> I believe that is due to HyperThreading. >>> >>> Hi Michael and Bruce, >>> Thanks for the information. Is this new in Lion? I'm sure I only saw 8 >>> cores displayed in Snow Leopard (and earlier). >>> Does Lion actually provide a benefit from HyperThreading (and logical >>> cores), or is performance the same and only displayed differently? >> >> The short answer for me is, I don't know. Poking around the web a bit >> indicates that the hyperthreading doesn't show unless the system is under >> load, but I have no first hand experience to verify this. > > This is not new in Lion - my Snow Leopard Core i7 iMac reports the same sort > of findings. Note that iStats may not have been up to date when you had it > installed on Snow Leopard and at one point it did not support hypertreading. > There is also a preference in iStats to not report it as well, I believe. > > I have a 4-core Core i7 under SL which shows up as 8 CPUs in iStats under SL: > http://vjl.li/b8
Hi Vince, My mistake. I was using the old (free) version of iStat Menus, so perhaps they added the hyperthreading support in the newer (non-free) version. Or else I just did not have that feature turned on. Thanks, Gregg _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
