2834 Views 5 Replies Latest reply: Mar 16, 2010 1:19 AM by Roald Hoolwerf
No idea why these are different. Try deleting the preference file associated with the Activity Monitor on both Macs.
I just checked something. On my iMac running 10.6.2 the Activity Monitor version is 10.6 (210)
On my PowerBookG4 running Tiger 10.4.11 AM version number is 1.5 and look the way you described.
Bob, the 15 and 17" are both running Snow Leopard?
There must be something wrong with the Activity Monitor, as I got the same problem on my new i7 iMac. The 8 graphs you refer to is the 8 cores the system sees. Intel have been utilizing a technology for some years now called Hyper-Threading, which makes the OS see 2 virtual processors for each core present. See here for details: http://en.wikipedia.org/wiki/Hyper-threading
Sorry for being gone a while - I had a detached retina and am just now able to see the screen well enough to respond...
So the hyper-threading of the i7 makes 8 cores, as far as the OS is concerned? Does the i5 not also utilize hyper-threading? Maybe not, I guess, based on a quick online check.
I'm unaware of any other significant difference between the 2 machines. Both are running 10.6.2, and both report the same build number (212) for Activity Monitor.
Seems unlikely to say that Activity Monitor hasn't been updated to deal with the i7, however. More likely it is simply that this is the new way of dealing with reporting the activity of the 8 cores as seen by the OS. It isn't a bad solution - having an 8 bar graph in the dock would either take up a lot of room, or be so small as to be useless. The separate window, which I keep down in the bottom left corner of the screen, works just fine. I just couldn't figure out why the 2 machines worked differently in this respect.
The i5 doesn't use HyperThreading, the i7 does. HT means that the machine sees 8 virtual cores indeed. ActivityMonitor doesn't show this properly in the Dock, something like iStat Menu's shows it just fine.
I have to say, recoding a video and seeing all eight cores going full power is quite an impressive sight!