On 5.3.2013, at 11.55, Evgeny Basov <ya.mw...@yandex.ru> wrote: > I tested dovecot's work with expunge messages on Mdbox over strace (see > at tail of message). As I can see dovecot process opens old storage m.* > file, reads it content, opens new temporary file, writes in this one > content and rename this new one to m.(*+1).
You're talking about doveadm purge, right? Not expunge. > How fast this algorithm works on system with about 10000 users and 5Tb > data? I will use mdbox_rotate_interval for delayed expunge but I think > that simple delete file in Maildir must be faster than expunge from Mdbox. Yes, Maildir/sdbox is faster when freeing up disk space for mails. Read and save operations should be faster in mdbox though. And if the purge is run at a time when there is less disk IO, it shouldn't be that bad.
