Aki Tuomi <aki.tuomi@dovecot.fi> writes:
On 24 February 2018 at 15:47 Neil Jerram <neil@ossau.homelinux.net> wrote:
[...]
Feb 24 10:24:24 arudy dovecot[1712]: imap(neil): Warning: Transaction log file /home/neil/dovecot-mail/.imap/INBOX/dovecot.index.log was locked for 98 seconds (Mailbox was synchronized) [...]
You are using mbox format. This is ... bit slow. =)
When you move mails between mbox files, it has to rewrite the entire mbox file every time. You should probably start using maildir or sdbox instead.
Ah, right, thanks.
My INBOX file has 22990 messages. Is the slowness that I am seeing definitely expected for an mbox of that size? (It may also be relevant that the HDD it's stored on is pretty old now, and has been known to report SMART errors...)
If so, I'll start looking at how to migrate, given that my system is Postfix + Dovecot. If you have any particular recommendations or migration pointers for a system like that, I'd appreciate them.
Best wishes - Neil