[Dovecot] Please advise on very fast search

[Timo Sirainen]

On Tue, 2011-11-15 at 12:26 -0600, Stan Hoeppner wrote:

> This is why I recommended mbox in the first place.  If your only writes
> to these mailbox files are appends of new messages, mbox is the best
> format by far.  It's faster at appending than any other format, and it's
> faster for searching than any other.

Just as long as you're not simultaneously trying to read and write the
mbox file (or just write in 2+ sessions). Then there's a lot waiting on
locks. (mdbox has no read locks, and its write locks are very short
lived.)