Quoting Gimili <[EMAIL PROTECTED]>:
On Thu, Jul 10, 2008 at 12:50 PM, Michael M Slusarz <[EMAIL PROTECTED]>
wrote:
Quoting gimili <[EMAIL PROTECTED]>:
Why would dimp be *significantly* slower to generate message list than imp
on a large mailbox?
DIMP isn't slower per se - both DIMP and IMP use the exact same functions
to generate the message lists. However, DIMP processes a larger chunk of
messages at a time than IMP does. In a typical mailbox, IMP displays by
default 20 messages per page while DIMP downloads, by default, 7 times the
size of the current viewport (if the current viewport is 20 messages, DIMP
downloads the message information for 140 messages). The tradeoff is
slightly slower initial display in DIMP for subsequent instantaneous
scrolling through the mailbox (at least the portion that is loaded) while in
IMP, you would have to wait for each subsequent page to load which takes
much longer and also hammers the server (a single request for message info
140 messages is more than 700% more efficient than 7 requests for 20
messages each).
Thanks kindly for explanation. This was not "slightly slower". It was so
slow I could hardly use it. I went to imp's options and changed my viewport
from 200 messages to 20 and now dimp works. With 200 and a large inbox dimp
does not work very well at all. I am not sure if the total number of
messages makes a difference as everything seemed slow with the display set
to 200 messages per page.
This makes absolutely no sense. The max_msgs preference is used only
in the IMP_Mailbox::buildMailboxPage() function, and that function is
never called from dimp. Changing that preference will cause no
difference in performance in dimp.
michael
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