High CPU usage

Myroslav Opyr myroslav at quintagroup.com
Fri Dec 9 10:34:56 GMT 2011

On Fri, Dec 9, 2011 at 11:55, Leonid Evdokimov <leon at darkk.net.ru> wrote:

> On Fri, Dec 9, 2011 at 13:02, Myroslav Opyr <myroslav at quintagroup.com>
> wrote:
> > I've been searching for solution either. offlineimap some time ago got
> sqlite
> > backend for status database. This drastically reduces amount of data to
> be
> > written on every single message sync ;) I managed to reach 152k of
> messages and
> > started searching for solution, you managed to reach 200k.
> I gave sqlite backend a try - and it's working much better in terms of
> CPU usage.
> Initial folders scan used 120% of CPU, but further copying is almost
> painless. My laptop is cool again! :)

It look like sqlite benefits should be listed in example configuration
altogether with EXPERIMENTAL warnings. This way the feature will be tested
by real-world use-cases (in this case ones that push the limits further).
It is good to know that 150k likes in single folder on ext4 is not a
problem ;)

BTW, what is your filesystem? What others are using for huge Maildirs?
btrfs2 anybody?


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