[Dovecot] Indexing Performance Question (was tpop3d vs dovecot)

[FiL]

10 minutes to read 748Mb? Kinda slow, isn't it ?
For me reading 2Gb mailbox (not maildir) takes MUCH less time than that 
(around 20 sec).
It should be within 40secs to read the whole maildir.

FiL

Nate wrote:
>
> 1.  First pop3 connection.  With no index files whatsoever, it takes 
> nearly a full 10 minutes at 100% io load to scan the 71570 files 
> (748M) directory and build the index files from scratch which look 
> like this: