Default use of caching on raw volumes

[Serge E. Hallyn]

Quoting Nikolai K. Bochev (n.bochev at grandstarco.com):
> Now the question is - did the ubuntu team do some testing with this ?

I don't know about Dustin.  I myself haven't really played with the
caching options.

>From what I see online it definately seems to make a huge difference.
For Lucid and Maverick I think the best we can do at this point is to
tell the user about it.  For Natty, well the best option is to have you
work with upstream to change the default there.  Sounds like you've got
a posse forming to back you up  :)  In either case, some precise
benchmarking (involving say 30 runs of each test and showing mean +/-
95% confidence interval) might be enough to convince me that it was
worth writing and carrying a patch to change the default in Ubuntu,
which I would then try to push upstream.