[RCD] performance tips

till klimpong at gmail.com
Tue Oct 13 17:18:24 CEST 2009

I added the page, and did some brief formatting:

[ Sorry about the issues, but we had to take away/restrict page
creation because of the ongoing spam outbreaks. ]

On Tue, Oct 13, 2009 at 9:01 AM, A.L.E.C <alec at alec.pl> wrote:
> Patrick Nagel wrote:
>> I made some changes (please check that I didn't change the meaning,
>> Alec) and formatted it for the TRAC Wiki. I think
>> 'Howto_Performance_tuning' would be a good page name. Unfortunately I
>> seem to not have enough rights to create a Wiki page (that's a weird
>> policy, if you ask me... it's a Wiki!). The Wiki told me so on pressing
>> the 'save' button...
> Currently I have no rights to create a page too. I'm sure it was
> possible before... In the mean time, thanks for your correction there's
> only one misunderstanding.
> "The caching is not always faster though, and cache update operations
> are expensive."
> This is not exactly what I'd like to say about the cache update process.
> Roundcube is always making a check of cache completeness. In general, it
> compares messages counts in the server and in the cache, it also checks
> UIDs of some (most recent) messages. If something differs the cache is
> assumed dirty and is updated (fetching headers of messages for current
> list page from IMAP server). Let's suppose a folder with 1k of messages.
> Not every message have been viewed or listed by Roundcube, so cache
> contains, let's say, a hundred. In this simple and common case the cache
> will be always dirty until you will list each message. This probably
> should be fixed in future versions, but that's how it works.
> Also we could add:
> === 'imap_root', 'imap_delimiter' ===
> If you know your imap's root directory and its folder delimiter, you can
> specify them here. This will save one NAMESPACE and one LIST call.
> --
> Aleksander 'A.L.E.C' Machniak http://alec.pl gg:2275252
> LAN Management System Developer http://lms.org.pl
> Roundcube Webmail Project Developer http://roundcube.net
> _______________________________________________
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