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Setting Affinity in windows

  • CPUs
  • Performance
Last response: in CPUs
a c 131 à CPUs
January 24, 2011 1:24:13 AM

I'd like everyone's thoughts on purposely setting affinity of programs and virtual machines to specific core. I see no advantage as windows seems to do a very good job. I suspect it might even degrade performance in most cases.


More about : setting affinity windows

a b à CPUs
January 24, 2011 2:15:56 AM

Depends on version of windows.
On XP it helped my performance with running DVD Flick (encoding/burning) and also with running a VM using VirtualBox.
It wasnt actually the performance of the programs it was the performance of the OS itself.
I did it with using SeeSaw (freeware) and also Task Manager.
I found SeeSaw more versatile.
With that said.with Windows 7 the thread ordering service is sooo much better that I dont see a reason to set affinities.
I also think it is more important when utilizing HyperThreading to set affinities to physical cores.
With DVD Flick the program allows you to set a amount of threads so when I am using the system while encoding I just set it to one thread and two when I am not using it.
I wish more programs let you set amount of threads.
I think Handbrake might let you do it also though I havent used it in awhile.