dovecot - May 2008 - how add size (, S=size) and virtual size (, W=vsize) fields to a maildir filename ?

Hi to all,
I'm a sys admin in a college, and we're using Dovecot as IMAP/POP3
server and delivery; we're also patch dovecot to add managesieve
capability. I've a question:

I've read on dovecot's wiki, that is possible improve the performance on
maildir files by adding ,S=<size>,W=<vsize> fields on filename. How
is
possible to do that ? I've search on all the wiki and on the mailing
list, but I didn't find nothing about modify the maildir file name.

Someone can help me ?

Best regards,
    Marco

On Tue, 2008-05-13 at 08:36 +0200, Marco Giunta wrote:
> Hi to all,
> I'm a sys admin in a college, and we're using Dovecot as IMAP/POP3
> server and delivery; we're also patch dovecot to add managesieve
> capability. I've a question:
> 
> I've read on dovecot's wiki, that is possible improve the
performance on
> maildir files by adding ,S=<size>,W=<vsize> fields on filename.
Only in some specific situations. Do you use Maildir++ quota? S= is
useful only with it. Do you use Dovecot's deliver? It adds Sautomatically if
you use quota plugin.

W= isn't added automatically by v1.0, but v1.1 adds it (actually I just
noticed that the code was accidentally commented out, I enabled it again
so the next release will have it).

But as long as you're using index files (and you should be), W= doesn't
really provide any performance benefits.
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Thank you Timo, I'll use quota plugin on delivery.


Timo Sirainen wrote:
> On Tue, 2008-05-13 at 08:36 +0200, Marco Giunta wrote:
>   
>> Hi to all,
>> I'm a sys admin in a college, and we're using Dovecot as
IMAP/POP3
>> server and delivery; we're also patch dovecot to add managesieve
>> capability. I've a question:
>>
>> I've read on dovecot's wiki, that is possible improve the
performance on
>> maildir files by adding ,S=<size>,W=<vsize> fields on
filename.
>>     
>
> Only in some specific situations. Do you use Maildir++ quota? S= is
> useful only with it. Do you use Dovecot's deliver? It adds S>
automatically if you use quota plugin.
>
> W= isn't added automatically by v1.0, but v1.1 adds it (actually I just
> noticed that the code was accidentally commented out, I enabled it again
> so the next release will have it).
>
> But as long as you're using index files (and you should be), W=
doesn't
> really provide any performance benefits.
>   
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