[Dovecot] Design: Asynchronous I/O for single/multi-dbox

[tomas at tuxteam.de]

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On Tue, Mar 16, 2010 at 01:19:01PM -0400, Frank Cusack wrote:

[...]

> And when you don't want to block on I/O.  Threads are almost always
> easier than AIO, and especially easy (ie, no scary complexity issues
> eg deadlock) if you aren't sharing data structures.
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Such a little phrase... ;-)

Yes, if you aren't sharing data structures you may as well use separate
processes.

Honestly, I do prefer the explicit complexity of async IO to the
implicit complexity of locking. At least in IO-centered server
processes. Threads just /seem/ easy.

And as to the latency/performance, watch the small/fast HTTP servers
moving to async IO models.

I'm not the one to be taken too seriously on it, but I feel that Timo
has the right hunch here.

Regards
- -- tomás
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