Quoting Mat Cantin <m...@cantinbrothers.ca>:
Greetings,
I currently have Horde4 groupmail installed and operational on
Lighttpd with the Dovecot IMAP backend for email and authentication.
I've been working on trying to improve IMP's performance when
loading new messages that have not yet been viewed and cached. I've
been able to get it down to about 3 seconds, which I understand is
pretty typical because that's how long it takes to establish a new
IMAP session and download the message.
3 seconds? According to Firebug, it took 453ms total to view your
message, from the initial browser request to receiving the full
response from the server (granted, my mail server is located about 25
feet away in my basement, so network latency is essentially zero, but
still...)
You are using the dynamic view right? Traditional view will take much
longer because it needs to rebuild the entire page on every view (and
it is even worse if you have the sidebar open). Dynamic view only
needs to prepare the message view data when viewing a message.
Although 3 seconds is good, when my users want to look through
several new messages quickly, it's really not that great, especially
when comparing the performance with Google Mail and Outlook Web
Access.
Have you tried the recommendations in imp/docs/PERFORMANCE?
Specifically using imapproxy?
Getting to the point, I've noticed that once a message has been
viewed and cached, going back to that message later is
instantaneous. Does anyone know if it's possible to configure IMP to
pre-cache all the messages in the current view? Ideally, it could
quickly load and show the user's message list and then proceed to
download the messages in the background. I realize that this will
obviously take more server resources, but that's a trade-off we can
make.
There should be no need to pre-cache. 500ms to view a message is more
than fast enough.
michael
___________________________________
Michael Slusarz [slus...@horde.org]
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