Commit Graph

10 Commits

Author SHA1 Message Date
John Goerzen
3305d8cd4d Daniel Jacobowitz patches
fixes deb#433732

Date: Sun, 30 Sep 2007 13:54:56 -0400
From: Daniel Jacobowitz <drow@false.org>
To: offlineimap@complete.org
Subject: Assorted patches

Here's the result of a lazy Sunday hacking on offlineimap.  Sorry for
not breaking this into multiple patches.  They're mostly logically
independent so just ask if that would make a difference.
First, a new -q (quick) option.  The quick option means to only update
folders that seem to have had significant changes.  For Maildir, any
change to any message UID or flags is significant, because checking
the flags doesn't add a significant cost.  For IMAP, only a change to
the total number of messages or a change in the UID of the most recent
message is significant.  This should catch everything except for
flags changes.

The difference in bandwidth is astonishing: a quick sync takes 80K
instead of 5.3MB, and 28 seconds instead of 90.

There's a configuration variable that lets you say every tenth sync
should update flags, but let all the intervening ones be lighter.


Second, a fix to the UID validity problems many people have been
reporting with Courier.  As discussed in Debian bug #433732, I changed
the UID validity check to use SELECT unless the server complains that
the folder is read-only.  This avoids the Courier bug (see the Debian
log for more details).  This won't fix existing validity errors, you
need to remove the local status and validity files by hand and resync.


Third, some speedups in Maildir checking.  It's still pretty slow
due to a combination of poor performance in os.listdir (never reads
more than 4K of directory entries at a time) and some semaphore that
leads to lots of futex wake operations, but at least this saves
20% or so of the CPU time running offlineimap on a single folder:

Time with quick refresh and md5 in loop: 4.75s user 0.46s system 12%
cpu 41.751 total
Time with quick refresh and md5 out of loop: 4.38s user 0.50s system
14% cpu 34.799 total
Time using string compare to check folder: 4.11s user 0.47s system 13%
cpu 34.788 total


And fourth, some display fixes for Curses.Blinkenlights.  I made
warnings more visible, made the new quick sync message cyan, and
made all not explicitly colored messages grey.  That last one was
really bugging me.  Any time OfflineIMAP printed a warning in
this UI, it had even odds of coming out black on black!


Anyway, I hope these are useful.  I'm happy to revise them if you see
a problem.

-- 
Daniel Jacobowitz
CodeSourcery
2007-10-01 22:20:37 +01:00
Florian Friesdorf
ed005cbbdc UIBase config variable fix
Code is probably reached for the first time, thanks to the correct readonly
handling patch
2007-07-07 02:30:42 +01:00
John Goerzen
4370da1dcf UNDO: Checkpointing 2007-07-05 14:49:54 +01:00
John Goerzen
7a287cef57 Checkpointing 2007-07-05 14:49:54 +01:00
David Favro
65a6b8aa81 Removed copyright notice; assigning copyright to John Goerzen 2007-03-16 03:45:28 +01:00
David Favro
b06845fc70 UID validity diagnostics improvement
* Reduced the number of parameters passed to ui.validityproblem() because they were all just method-calls to the folder object, which is already passed as the first parameter (reduction of unnecessary complexity).

* Improved the diagnostic message for an 'UID validity problem' by including the name of the repository in which the folder resides; previously it was not possible to determine from the diagnostic alone on which side the problem was.
2007-03-15 05:41:43 +01:00
Daniel Burrows
0ee7dfd435 Add parameters to terminate() that specify an (optional) error message to display on termination. 2006-12-01 11:54:12 +01:00
John Goerzen
f75a89d954 Updated copyright and version info 2006-10-19 02:04:28 +01:00
John Goerzen
39a18fef60 Update FSF address 2006-08-12 05:15:55 +01:00
John Goerzen
d839be3c61 Step 2 of SVN to arch tree conversion 2005-04-16 20:33:35 +01:00