On Sep 9, 2:34 pm, Len Gerstel <[email protected]> wrote: > 1) The apps are not dual processor aware. Most apps are. Even VLC > player is and will split the load across the 2 processors of a dual. > > 2) You are not doing anything with these systems while the apps are > running. Since they do not appear to be dual processor aware, they > are running at about 100% utilization on one processor, and the other > is sitting near 0% I bet.
actually, you lose. where do i go to collect? ;o) i wouldn't presume to guess whether the apps are dual processor aware or if the OS distributes the work, but if i view the activity monitor on the DP machine while a single job is running, first one processor is 75% maxed out while the other is near 25% activity, then it flip-flops and the other is 75% maxed out while the first is near 25% activity. the frequency of the flip-flops is about twice per second. if i run two jobs simultaneously, both processors stay 100% maxed out continuously. and as you might expect, on the SP machine, the activity monitor shows the one CPU 100% maxed out continuously. differences in viewing video, as you describe, is (this time i'll wager) more a function of the video card processor speed and memory, not the main CPU processor speed. it really surprises me how often folks need reminded that a chain is only as strong (fast) as it weakest (slowest) link. why are CPUs are like quarterbacks . . . ? they either get all the credit or all the blame, and usually deserve neither. john --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list -~----------~----~----~----~------~----~------~--~---
