On 20.3.2012, at 9.35, Rajesh M wrote: > i migrated my email server with around 5000 users from dovecot version 1.2 > to version 2 > > i have two separate 2 tb hdd's storing webmail data of these users.
You mean you simply upgraded the Dovecot version, the server is exactly the same? > the load on the server goes very high over 100 during peak load times and > the imap connections get dropped frequently, webmail becomes very slow. There shouldn't be much performance difference between v1.2 and v2.x. > in the dovecot log file i get errors as such > > Warning: Maildir /homebackup/domains/xxxx/xxxx/Maildir/.ALL_INBOX MAIL: > Synchronization took 71 seconds (20 new msgs, 0 flag change attempts, 0 > expunge attempts) This simply means that the disk IO usage is very high. > i am a bit confused as to what settings are to be done for a very busy server Show dovecot -n output of the new server, and if you have the old configuration available that could be helpful also to compare their differences.
