GSoC: Add SMT/HT awareness to DragonFlyBSD scheduler

[Matthew Dillon]

:    There shouldn't be much of any I/O waiting even with a hard drive
:    for compilations.  Apache (and other) builds are going to be limited
:    by serialization within the Makefile and /bin/sh sequences which wind
:    up doing a lot of fork/exec/wait's.

    I should note that there will be one slight difference.  Even
    though disk I/O will minimally impact the build (particularly on the
    second go-around), file operations can sometimes block for very
    short periods of time in this situation, so the scheduler is going
    to be exercised a lot more verses testing with simple cpu-bound
    for(;;); loops.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>