processes not getting fair share of available disk I/O (was: Re: TCP parameters and interpreting tcpdump output )

[Dieter]

> > 	hw.ata.wc=3D0
>         ^^^^^^^^^^^
> "Make my hard drive go reeeeally slow please (just in case I crash)" :)

Slower, yes, but not *that* slow.

Normal ls : 0.032 second.  Two processes using same disk, multiply by two,
so 0.064 second.  Maybe the multiplier is more than 2, call it 10x, so
0.32 second.  But I'm seeing a factor of over 9100x.