Statistical puzzle

[Tomas Olsson]

Garrett Wollman <wollman at khavrinen.lcs.mit.edu> writes:
> Same machine, same disk(s), rewriting a 1 GB file on AFS versus local
> disk, excluding close/write-back times.  Inexplicably, writing to
> Arla's cache is about 13 Mbyte/s faster than writing directly to the
> local file system, and much less jittery.
> 
Interesting. Could you share some more details, exactly how did you
measure what, how did you exclude close/write-back times? Code?

thanks
        /t (curious)