2009/11/11 Ben Haller <bhcocoa...@sticksoftware.com>: > OK, either I'm being exceptionally dense or there's a bug in NSProcessInfo > on 10.5. If I execute: > > NSProcessInfo *processInfo = [NSProcessInfo processInfo]; > int processorCount = [processInfo activeProcessorCount]; > > NSLog(@"processorCount == %d", processorCount); > > I get a log that says "processorCount == 16". But I am under the strong > impression that I have a dual-processor quad-core machine, which makes 8 > processors, and System Profiler backs me up on this: > > Model Name: Mac Pro > Model Identifier: MacPro4,1 > Processor Name: Quad-Core Intel Xeon > Processor Speed: 2.26 GHz > Number Of Processors: 2 > Total Number Of Cores: 8 > > That seems fairly unambiguous. Total number of cores == 8. So what gives? > Is there some subtle definition of what an "active processor" is that I'm > missing, such that I have twice as many "active processors" as I have cores, > or does NSProcessInfo have a bug (in which case, yes, I will file it :->)? > And if it's an NSProcessInfo bug, what's a non-buggy way to find out my > processor count?
Hyper-Threading?.. Also, do "sysctl machdep.cpu" from the terminal to get more info on your cpus. Cheers, -- Igor _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
