[Dovecot] nfs director

[Tim Traver]

On 9/2/2010 11:20 PM, Noel Butler wrote:
> On Thu, 2010-09-02 at 22:36 -0700, Tim Traver wrote:
>
>
>> As I read down the thread, I realized that many of the posters were
>> pointing out that it shouldn't be used because postfix or qmail can
>> deliver without problems. But in doing that, you lose the performance
>> gain (and in my case the use of sieve filters) that the dovecot-lda
>
> Not entirely true, you lose the performance gain maybe if you stopped
> caching for pop3/imap side
> there has been no performance degradation on the "delivery" side, and
> deliver not updating caches has not affected in any noticable way how
> the clients receive their mail.
>
> That said, this is from  a purely pop3 stand point, in testing webmail,
> no difference was noted either, I can not speak for those who consider
> imap the primary use where it may or may not affect performance at a
> noticeable level.
>  
>
Noel,

yes, there is no change on the delivery performance, as dovecot-lda is
just a delivery program to the Maildir just like any other. The thing
that it does different is update the dovecot uidlist and update the
index with a new mail. As you mentioned, it also has the sieve filter
now built into it, which is important to me, but maybe not everyone
depending on their setup.

Not using dovecot-lda is just postponing the work that it does until the
user attempts to fetch the mail using POP or IMAP. I doubt that it is
"noticeable" when you test it, but when dovecot has to reindex when you
log in to IMAP or POP, you're adding several things that it has to do
before you get your messages, and if you really are trying to keep
performance high on a LARGE user base, then this could make a
difference. I'd rather it take the time to do the indexing and uid stuff
on the deliver than on the pickup, wouldn't you?

t

>> brings to the table. Even without using the dovecot-lda, the indexes for
>
> The only thing I see as a setback is (and again, I've not looked into
> this so there may be a plain sight solution within postfix itself) no
> sieve
> support. This is why I myself some time ago asked about an added option
> to deliver to ignore it and just deliver the darn message file, letting
> pop3/imap discover any changed and do updates.
>
> ahhh 40 mins to friday beer oclock
>