Extremely slow on Windows when doing more than one thing at once
- Load a number of substantial audio files
- While alignment is in progress, switch to Melodic Spectrogram view
- Observe that the window updates extremely slowly, and the application enters "not responding" state for long periods of time
I think the application is still working and will eventually complete the job, but I haven't the patience to find out.
There is no such problem on Linux, and I don't think there was such a bad problem on Windows either until quite recently.
#2 Updated by Chris Cannam 7 days ago
The origin of this appears to be that this machine is the only one I'm testing on on which enough free memory is reported for
SpectrogramLayer to make a decision to use the whole-model cache. Disabling that and using either the default 8-column cache or the finer 4-column one makes things much faster (the 8-column cache especially).
#3 Updated by Chris Cannam 7 days ago
What is particularly problematic is "cascading" caches - generating one cache based on summaries of another cache which also needs to be filled. The whole-model cache and the normal cache were set up in this way (normal cache generated from whole-model cache). This causes massive memory pressure. Switching the normal cache to be generated directly from the FFT model essentially solves the problem.
I'm still uncertain whether the whole-model cache is useful in any circumstance.