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Re: Synchronization Issue (Folders not deleted)

Re: Synchronization Issue (Folders not deleted)

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To: Stewart Smith <stewart@xxxxxxxxxxxxxxxx>
Cc: offlineimap@xxxxxxxxxxxx
Subject: Re: Synchronization Issue (Folders not deleted)
From: Bernhard Egger <bernhard@xxxxxxxxxxxxxx>
Date: Wed, 03 Oct 2007 20:07:06 +0900
Reply-to: bernhard.egger@xxxxxxxxxxxxxx

Hash: SHA1

>> I'm using offlineimap to backup my mails on a courier IMAP server. It works
>> nicely, although it took about 4 days with 100% CPU and >400MB of RAM to
>> download my Junk folder.
>> (insanely large, ~300K messages...I know, but still. The first 100K or so
>> messages download reasonably fast, but then it gets slower and slower. At the
>> end, only about 1 message per 3 seconds is downloaded. With 400MB of RAM one
>> would assume that the necessary data structures are all in memory and thus
>> accessed/traversed quickly).
> This is largely due to the localstatus updates that offlineimap is
> doing.
> I have a patch (see the archives, or i can send it to you) that uses a
> sqlite database per folder for localstatus that *dramatically* speeds
> this up and significantly reduces CPU time (i've been using it myself on
> my critical mail for several months now... so it does work).
I would appreciate it if you could send it to me - thanks a lot.

> I'd be interested to hear you trying an initial sync with my patch and
> see how it goes (should be a lot quicker too)
well, the 300K messages folder does not contain that many messages any more
(unfortunately). I just synched once to make a backup of my mail and then
deleted it. I have about 5K messages in there now, and with my +/- 200 junk
messages per day, it'll be quite big quite soon.

Anyways, I'll try it out and then post the results.

Comment: Public key at


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