Re: Concurrency in an RDB
Date: 19 Dec 2006 17:36:12 -0800
Message-ID: <1166578572.381030.186540_at_t46g2000cwa.googlegroups.com>
Pickie wrote:
> David wrote:
> <snip>
> > My claim can't easily be proven true, but it should easily be falsified
> > if it turns out to be wrong. You haven't yet provided an example.
>
> This sounds reasonable, but it might not be. How many colours are
> required for a map?
My point was that it is common for universally quantified assertions to be difficult to prove but easy to refute if a counter example can be found.
> <snip>
> > I don't. I merely claim it is desirable (and in practise possible) to
> > use fine-grained mutative transactions.
> <snip>
> > My statement was quite simple: Distributed transactions (in contrast
> > to in-process transactions) have large overheads and therefore issuing
> > many fine-grained transactions instead of fewer coarse-grained
> > transactions can degrade performance.
> <snip>
>
> I'm confused. Are fine-grained transactions good or bad?
Cheers,
David
Received on Wed Dec 20 2006 - 02:36:12 CET