clidx Posted September 11, 2007 Posted September 11, 2007 if you have a hyper threading cpu and you set a program that is using 51%+ of the cpu and limit it's affinity to just cpu 0 (or just cpu 1) in taskmgr then does it only use half of the cpu? ht cpus are only 1 core so i'm just wondering
nmX.Memnoch Posted September 12, 2007 Posted September 12, 2007 They're 1 core but can execute 2 threads at once. So setting the affinity to 1 virtual CPU or the other does limit what Windows XP can do with thread execution/scheduling. It does use the entire CPU though. Task Manager will show it running at "50%", but that's only because it's limited to what Task Manager sees as half the CPU.
clidx Posted September 13, 2007 Author Posted September 13, 2007 Ahhh thanks for clearing that up i get it now.
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