mmap versus read benchmark

[Bourne-again Superuser]

Zack Weinberg said:
>
> If you look at the raw data, you find that to first order all the time
> is spent in user mode doing actual work.  "Bourne-again Superuser"
                                            ^^^^^^^^^^^^^^^^^^^^^^^^
> <toor@dyson.jdyson.com> predicted this.  On my machine, the complete
> benchmark took one hour of wall time, of which only one minute was
> system activity.  So we can conclude that mmap versus read is a
> first-order wash; but we want to dig a little deeper.
> 

Darn'it -- another account that I forgot to setup my name correctly!!! :-(.

John