Author: Robert Hyatt
Date: 07:00:58 12/11/02
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On December 11, 2002 at 07:30:31, George Sobala wrote: >Is that a dual or a quad? (4 processors listed in your post). It is a dual. Each physical CPU looks like two logical processors to the linux kernel, which is _the_ point of hyper-threading. The O/S loads up two logical processors with context to execute a thread, and then lets the physical CPU take care of the scheduling between those two threads. As I mentioned previously, this is just another attempt by the hardware guys to move things out of the O/S and into the hardware where it can be even more efficient. two logical processors per physical CPU is just the beginning. And this is following similar lines as SCSI, which has moved all of the disk queueing and optimizing stuff out of the O/S and into the SCSI controller where it can be done way more efficiently while offloading another task off the CPU and into hardware.
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