analyzing file causes sluggish gui

[poelzi]

A regression in the last 2-3 weeks, have not bisected yet.

Selecting a larger amount of tracks and dropping them in analyze will freeze mixxx completely.
Running a track or in general gui feels extremly sluggish now when tracks are analyzed.

[Uwe Klotz (uklotzde-deactivatedaccount)]

I will analyze this issue ASAP now that I noticed it, too!

[Uwe Klotz (uklotzde-deactivatedaccount)]

Might be caused by a priority inversion between the analysis and the UI thread:
https://github.com/mixxxdj/mixxx/pull/1413#issuecomment-351974679

[Uwe Klotz (uklotzde-deactivatedaccount)]

Some fixes that hopefully improve the situation:
https://github.com/mixxxdj/mixxx/pull/1413
https://github.com/mixxxdj/mixxx/pull/1415

We still need to fix the main cause mentioned in the linked PR comment!

[Uwe Klotz (uklotzde-deactivatedaccount)]

The "sluggish" response is caused by the way how the worker thread communicates with the analyzer component in the main thread. I'll take care of this.

[Uwe Klotz (uklotzde-deactivatedaccount)]

It turned out that the main reason for the unresponsiveness was actually the missing local caching in BaseTrackCache:

https://github.com/mixxxdj/mixxx/pull/1485

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/9005