[Dovecot] 1 week after full migration to 1.1v

[Raphael Bittencourt S. Costa]

Joe,


On Mon, 2008-06-23 at 22:58 +0800, Joe Wong wrote:

> Hi Raphael,
> 
> Can you also share the figures on the average mailbox size

This is very hard to know... Because it depends on the hosting package,
now every new mail account is created with 1,5G.

>  and number of 
> cocurrent users in peak hour before and after migration?

The concurrent users doesnt change after the migration. Its about 820
concurrent imap users and 400 concurrent pop3 users.

>  What is your 
> hardware configuration (CPU / MEMORY / DISK TYPE )?

Server is a Dell PE 1950, dual xeon(5160), 4G, 2x146SAS and the storage
is Hitachi AMS 500, with 41x146G Fiber 15K.

> - 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
> >
> >
> >
> >
> > 
>