Hey Sebastian and Peter<br><br>I've noticed that in the latest git version of Dolphin, the side-bar has been updated to show cool stuff like all your Documents, Music and even stuff from timeline.<br><br>Each of these runs by passing a query to the query service client, which in turn passes it the QueryService. The QueryService runs the query AND waits for changes to the Nepomuk repository. The moment it notices that the repository has changed, it re-runs ALL the queries.<br>
<br>This gives us absolutely horrible performance when listing a large number of files. A typical example is listing all the music files when stuff is being indexed. I have a small music collection, just around 35,000 songs. Listing all them takes a lot out of Nepomuk and Dolphin. This will become an even more serious issue when the Telepathy-Nepomuk
Service is shipped. It writes even the smallest change to Nepomuk, and
that results in all the queries being re-run.<br>
<br>Is there any way we can improve this?<br><br>I was hoping for some kind of 'live query' boolean parameter. Only the queries with that parameter set will be re-run. For simple stuff like querying all the music files or documents (or even Timeline) we could use the ResourceWatcher.<br>
<br>What do you guys think?<br clear="all"><br>-- <br><span style="color:rgb(192,192,192)">Vishesh Handa</span><br><br>