[Dovecot] 1 week after full migration to 1.1v

[Joe Wong]

Hi Raphael,

Can you also share the figures on the average mailbox size and number of 
cocurrent users in peak hour before and after migration? What is your 
hardware configuration (CPU / MEMORY / DISK TYPE )?

- Joe

----- Original Message ----- 
From: "Raphael Bittencourt S. Costa" <raphaelbscosta at gmail.com>
To: "dovecot" <dovecot at dovecot.org>
Sent: Monday, June 23, 2008 10:36 PM
Subject: [Dovecot] 1 week after full migration to 1.1v


> Ehlo all,
>
> I've been working on a migration of about 240K users from one server
> with qmail, courier imap, maildrop and ldap to postfix, dovecot, lda
> +sieve. Before the migration the server and the storage were always on
> high load.
>
>
> Before migration:
>
> Storage IOPs = 4600
> Read average  = 2800
> Write average = 1800
>
> Storage CPU (Raid5)
> Crl0 = 50%
> Crl1 = 50%
>
> Server Load = 120
> %user = 35
> %system = 60
> %iowait = 5
> %idle = 0
>
> After migration:
>
> Storage IOPs = 3000
> Read average  = 1200
> Write average = 1800
>
> Storage CPU (Raid5)
> Crl0 = 40%
> Crl1 = 40%
>
> Server Load = 25
> %user = 10
> %system = 27
> %iowait = 40
> %idle = 23
>
> And now the server responds so quickly to any imap command.
>
>
> Dovecot is now the default imap/pop server here, Thanks Timo.
>
>
> []s,
>
> Raphael Costa
>
>
>
>
>