Mixxx GUI is stalled when storing analysis.

[Daniel Schürmann]

Sometimes it happens that the Mixxx GUI is stalled for a 3 .. 10 s when storing analysis data.
This happens to me from time to time. I was not able to catch one of these faulty starts with a debugger.
Only the first store call in a Mixxx run seams to be effected.
I can see this with my i5 development machine running Ubuntu Trusty.

I think we need to investigate this systematical.

Has anyone else seen this?

[RJ Skerry-Ryan (rryan)]

Post-analysis Mixxx the GUI does stall for me sometimes. Notably the analyses are only written if they have not changed since the track was loaded and they are only written once the track exits the track cache (so that may explain why it happens only some of the time).

Nazar's library thread seems like the long-term fix for this. I'm not sure if there's a good band-aid fix.

[RJ Skerry-Ryan (rryan)]

Ah, at some point we added a save-track call after analysis is complete so my comment above is wrong.

Removing this fixes the bug for me. I don't think it serves a purpose anyway. Better to wait until the track falls out of the cache or its reference count drops to zero.

[RJ Skerry-Ryan (rryan)]

Removing the save on track analysis completion fixed this for me:
https://github.com/mixxxdj/mixxx/commit/3eff88548c2da0c543fdbe3fc47ffe176eff3ce2

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/7720