On Mon, 2010-08-30 at 17:38 +0200, Marinos Yannikos wrote: > I have a very large inbox (~146K mails) in Maildir format and dovecot > seems to spend a lot of time rescanning the directory, especially when > the server is loaded. I'm not sure whether this is triggered by > Thunderbird or done regularly, but it takes longer when the server is > loaded, so sometimes it seems that it is scanning continuously.
You could see if maildir_very_dirty_syncs=yes is helpful. > Since > it takes around 2000 getdents64() syscalls to scan my inbox, I'm > wondering whether the buffer size is a bit small with 4KB and might > benefit from being configurable: getdents64() is an internal kernel function and shouldn't be called directly (Dovecot uses readdir(), which is implemented with getdents64()). Also I doubt the buffer size is configurable and it probably wouldn't even help if a larger one was used, 2000 isn't yet that many syscalls.
