Re: soft updates performance

[Jordan Hubbard]

> One other point that I would like to understand is why -j4 takes
> longer on all of my systems. That goes against what everyone claims
> should happen.

With how many running processors?  If you're running -j4 on a
uniprocessor system, you're only introducing competition for already
scarce CPU resources, though -j2 can be a speedup since this allows
one target build to run while another is in an I/O wait.  I've only
seen a speedup with -j4 when using at least 2 CPUs.

- Jordan


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