Re: [Dovecot] Great time savings backing a mdbox versus Maildir

So with mdbox disk I/O usage increased compared to maildir+ramdisk indexes?

 That is a "tricky" question to ask. It depends on usage, I think 

the following:

 - LDA delivery: load is a bit lower (on disk) in Maildir vs mdbox: 

in both cases the message has to be written, indexes are updated, in Maildir indexes are in ram, so lower "disk" load in this case

 - POP3 access: the same as the previous post

 - IMAP access: this is tricky. In mdbox a /"delete message"/ 

command only lowers the refcount, indexes are updated and in the night a cron job runs doveadm purge. In Maildir, you really delete the message when MUA/webmail /"compacts"/ the folder, and indexes are updated. I think that mdbox has a /"delayed IO" /in this case, and has less load on disk on "production hours".

 Am I missing anything? The stats in the SAN after the change 

maildir->mdbox do not help, we have zlib enabled in lda & imap with mdbox, so our # of real IOPs is lower than Maildir (we did not have zlib enabled)

 Regards

 Javier