Dual Processor Help

In an SMP system, an idle CPU always receives the next piece of code for execution. This is, in effect, a self-correcting feedback loop that causes all CPUs in the machine to execute the same amount of code--hence, the term symmetric multiprocessing.

An SMP OS has only one run queue. That is, all the work scheduled by the OS is done using a common scheduler or associated set of run queues. This has the effect of dumping all work into a common funnel, which is then doled out to multiple CPUsin a symmetric fashion, on the basis of CPU availability.