https://bugs.kde.org/show_bug.cgi?id=232198
Summary: Parallelization of the IMAP connections to fetch mails
faster
Product: kmail
Version: unspecified
Platform: Mandriva RPMs
OS/Version: unspecified
Status: UNCONFIRMED
Severity: wishlist
Priority: NOR
Component: general
AssignedTo: [email protected]
ReportedBy: [email protected]
Version: (using KDE 4.4.0)
Installed from: Mandriva RPMs
In comparison with the mail MacOS X client, KMail retrieve mails very slowly.
When the IMAP protocol is sniffed in order to understand why is there a such
important difference between these two clients I found that Mail parallelizes
the IMAP connection and each connection retrieves the mails from the newest to
the lowest by group of 200 or 500 mails (I don't remember the number exactly).
Thus it would be very interesting to have the same thing under kmail. In other
words, next is how it could looks like:
- connection to IMAP server
- How many mails in the directory ? (for instance 1253)
- Create one new connection to the IMAP server to fetch the mail headers from
753 to 1253
- Create a new connection to the IMAP server to fetch the mail headers from 253
- 752
- Create a new connection to the IMAP server to fetch the mail headers from 1 -
252
Of course a limit on the number of simultaneous connection have to be applied
(for instance 5 seems to be a good choice?)
And if the previously mail headers are stored in cache on the disk
(independently of the off-line IMAP connection option), the directory content
could be drawn very quickly in the GUI and the latest mails would appear at
first. Then the other new mails could appear whereas the user is showing the
directory content!
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