> > This command quickly pointed to > > ~/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.tmp > > That file was written excessively. >
> Was it one user's dovecot.index.tmp or for a lot of users? There's just one user. All mail goes to one mailbox. > This > means that dovecot.index is being rewritten, which should happen only > once in a while, but now it sounds like it's happening maybe for every > mail delivery. Yes, it seems to be that way. > If it's still happening, could you send me one folder's > dovecot.index and dovecot.index.log files? (They don't contain > anything sensitive other than maybe message flags.) I can send the files. > > This is dovecot 2.3.7.2-1~bionic > > So you had been running this version already for a while, and then it just > suddenly started getting slow? Yes. Initially I threw away the whole mailbox after it got slow, but after a few days the performance started to degrade. Admittedly, it contains a lot of mails :) > I tried to reproduce this with imaptest and Dovecot that is patched > to log when dovecot.index is being rewritten, but there doesn't seem > to be any difference with v2.2.36, v2.3.7 or git master. -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebra...@charite.de | https://www.charite.de