analyzing file causes sluggish gui

[mixxxbot]

Reported by: poelzi
Date: 2017-12-14T15:41:27Z
Status: Fix Released
Importance: Critical
Launchpad Issue: lp1738227

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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.

[mixxxbot]

Commented by: uklotzde
Date: 2017-12-14T16:33:05Z

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

[mixxxbot]

Commented by: uklotzde
Date: 2017-12-15T13:43:29Z

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Might be caused by a priority inversion between the analysis and the UI thread:
#1413 (comment)

[mixxxbot]

Commented by: uklotzde
Date: 2017-12-15T13:47:16Z

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Some fixes that hopefully improve the situation:
#1413
#1415

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

[mixxxbot]

Commented by: uklotzde
Date: 2017-12-16T13:31:49Z

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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.

[mixxxbot]

Commented by: uklotzde
Date: 2018-01-14T21:54:35Z

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

#1485

[mixxxbot]

Issue closed with status Fix Released.