[Dovecot] Best (fastest + most stable) search config...

[Stan Hoeppner]

Timo Sirainen put forth on 11/4/2010 10:32 AM:
> On Thu, 2010-11-04 at 15:19 +0000, Timo Sirainen wrote:
>> With SSDs the Maildir
>> performance should be pretty good too. Here are some SSD numbers when
>> searching from mailbox with 10k messages:
>>
>> Maildir, uncached: 6.7s
>> Maildir, cached: 2.2s
>> mdbox, uncached: 2.8s
>> mdbox, cached: 2.0s
> 
> Same for a spinning disk, completely different hardware so numbers can't
> be meaningfully compared to above ones:
> 
> Maildir, uncached: 13.9s
> Maildir, cached: 5.0s
> mdbox, uncached: 6.8s
> mdbox, cached: 4.9s
> 
> Mails were first written to mdbox, then dsynced to Maildir, so I guess
> they should have been stored relatively close to each others. ext4
> filesystem.


That shows that mdbox is twice as fast as maildir for uncached searches,
which I'm guessing are the majority of searches.  I'd really be
interested in seeing numbers for mbox as well.

-- 
Stan