Not all that much better with PostgreSQL
dvratil at kde.org
Wed Apr 17 14:46:54 BST 2019
On Friday, 12 April 2019 21:57:21 CEST Martin Steigerwald wrote:
> Erik Quaeghebeur - 12.04.19, 21:00:
> > On vrijdag 12 april 2019 20:55:41 CEST, René J.V. Bertin wrote:
> > > I agree that akonadi has a long-standing dire need for job
> > > manager interface […] a big button to stop all
> > > processing, and buttons for each individual job to stop or pause
> > > it. […]
Then plan is to rather be able to run multiple tasks in parallel so the
indexing agent requesting the maildir resource to load every single email you
have from the storage would no longer block requests from KMail to retrieve a
single email to display to the user.
> > Akonadiconsole has something a bit like that: Right-click an
> > agent/resource and select ‘Abort activity’. It has actually come in
> > handy once or twice for me, even though it is not fine-grained.
> Thanks for the hint.
> KMail often also has this when you expand progress indicator bar. Just I
> found it often to have no effect whatsoever.
> Well… after that longer lasting indexing completed, it is still
> considerably better with PostgreSQL. So I am happy I changed.
> I have the impression it can do more in parallel. I was able to delete a
> mail while filtering was ongoing. That did not work before. I read in a
> article about improvements in just released major PostgreSQL version
> that PostgreSQL can do some queries in parallel that MariaDB/MySQL would
> so sequentially. So this may help.
David Faure did a *lot* of work to track down and fix the database deadlock
issues we had with MySQL (and with PostgreSQL as well, they just did not show
up that much), you should see a lot of improvement in speed and reliability in
the upcoming releases.
> It just seems longer lasting indexing operations still seems to
> completely stall Akonadi.
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