Re: [Exim] exim's databases and sql

On Sun, Oct 05, 2003 at 08:55:05PM +0100, Philip Hazel wrote:
> > Shall we try? I have a spare dual-Xeon attached to a Gigabit network I
> > don't need to do anything proper with for a couple of weeks. If I can
> > find the time at work next week, I might try something.
>
> If anyone has the time to run tests of the different DBM libraries, in
> particular, to compare tdb with DB4, the results could also be
> interesting.

You really neem to do tests, where you need to *write* a lot to the
database, to see how the locking effects performance. Reading for the
database can happen concurrently but for fallbacks, or other servers
which queue mail, locking to write will cause a delay.