Performance issues with Cyrus v2.1.12 on Solaris 5.8

[John Alton Tamplin]

Michael Rourke wrote:

> These figures were surprising, so I have tried to determine the source 
> of the slowness - especially of IMAP. Connection and authentication 
> happens faster with V2 (using SASL/PAM/pam_pwdfile) (average elapsed 
> time seen by the simulated client is down to 0.2s from 0.38s). What is 
> significantly slower is the command SELECT "INBOX". The average 
> elapsed time of this command has risen from an average of 0.26s to 
> 1.16s. I added elapsed time collection to cmd_select in imapd.c and 
> found mailbox_open_header() is taking about 0.56s on average and 
> index_newmailbox() is taking 0.33s.
>
> Can anyone suggest why these two functions are so slow, especially 
> when the V1 equivalents were measurably faster?

What is your configuration?  Are you using BerkeleyDB for the mailbox DB 
or skiplist?

-- 
John A. Tamplin                               Unix System Administrator
Emory University, School of Public Health     +1 404/727-9931