skiplist vs db format
igor at ipass.net
Fri Jan 23 15:00:07 EST 2004
What version of Berkeley DB4? If it is 4.1.25+ you need to upgrade cyrus
(2.1.16 or 2.2.3). What does 'iostat -xPn 30' show for the RAID 1
On Fri, 23 Jan 2004 throwaway-it at cox.net wrote:
> For those of you who have converted from the Berkeley db to skiplist, what kind of a performance improvement did you receive?
> We are using Berk. db4 and the IO wait for the disk containing the db is consistantly over 50%. The partition is 7GB, which also contains the user, quota, proc, and db directory. It resides on an STK V960 fibre channel, RAID 1 disks. I am seeing "DBERROR db4: nnnn lockers" errors with the number over 10,000+ ... usually soon afterwards, the imap process needs to be restarted.
> Also, the 'imapd -s' and 'pop3d -s' process unexpectedly dies and SSL connections are no longer possible until imap process is restarted. Is this a known problem?
> Our platform is :
> Cyrus 2.1.11
> Solaris 8, Sunfire 280R
> 4GB memory, 2 CPU
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