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IDProjectCategoryView StatusDate SubmittedLast Update
0009756ardourbugspublic2024-07-30 11:312024-08-02 18:16
Reportermerryl0 Assigned Tox42  
PrioritynormalSeveritymajorReproducibilityalways
Status resolvedResolutionfixed 
PlatformDebian GNUOSLinuxOS Version(any)
Product Version8.6 
Summary0009756: long timelapse to start and stop and edit and mix windows freeze during recording
Descriptionsince v8 I have been experiencing long time gaps (~10sec) between starting and stopping record and the audio starting and stopping.
during recording both edit and mixer windows are frozen. they update after the time lapse when stopping record.
the issue persists after rebooting the computer or updating Ardour
I am not noticing any other strange behaviour regularly.
Sometimes the session log shows errors, sometimes not.
Steps To ReproduceStart ardour v8.xx session
record or import some tracks audio and midi
start recording again
Additional Informationi attach the current session log below
here is a link to the saession archive
https://mega.nz/file/cJNHibZB#y7Ta1nqwTUhloZ6NAbRTsgqN4xnikeBRiBZnn7fQv1c
please let me know if you require a bebug report
many thanks
TagsNo tags attached.

Activities

merryl0

2024-07-30 11:31

reporter  

log300724.txt (827 bytes)    
2024-07-30T12:06:41 [INFO]: Scanning folders for bundled LV2s: /opt/Ardour-8.6.365-dbg/lib/LV2
2024-07-30T12:06:45 [INFO]: xjadeo version: 0.8.14
2024-07-30T12:06:45 [INFO]: harvid version: 901
2024-07-30T12:06:47 [INFO]: Loading menus from /opt/Ardour-8.6.365-dbg/etc/ardour.menus
2024-07-30T12:06:47 [INFO]: Cannot set I/O Priority for disk read/write thread
2024-07-30T12:07:01 [INFO]: LV2: update midnam for plugin 'General MIDI Synth'
2024-07-30T12:07:01 [INFO]: LV2: update midnam for plugin 'General MIDI Synth'
2024-07-30T12:07:02 [INFO]: Loading user ui scripts file /home/mel/.config/ardour8/ui_scripts
2024-07-30T12:07:02 [INFO]: Loading plugin order file /home/mel/.config/ardour8/plugin_metadata/plugin_order
2024-07-30T12:07:03 [INFO]: Loading history from /home/mel/Music/Audio/betogether24/betogether24.history
log300724.txt (827 bytes)   

paul

2024-07-31 14:03

administrator   ~0028868

Try the session in safe mode. This can be caused by plugins reporting absurd latency values, which in turn requires transport changes to take a very long time.

merryl0

2024-08-01 14:52

reporter   ~0028885

I removed all the plugins, no change
I tried safe mode. the problem was still there, this time I couldn't even stop the recording with transport controls or Ctrl space and had to kill ardour with task manager
I had been getting a missing file msg each time i restarted ardour and loaded the session. I dont know why this was, I didnt remove any files from inside or ouside ardour. I removed the track which had the missing file, saved and reloaded ardour, still no change
screenshot of the missing file msg below
Heres a link to the archive with no plugins
https://mega.nz/file/hRUV0BIR#7ubd-AkRO8qRoAiE16VCFwTA8qz28zBFp0hAR6LZ8xc
I started a new session of the same music, this time no problems so far, but the problem which this report concerns has been happening quite a lot to me this year
Many thanks
missingFilemsg.png (22,555 bytes)   
missingFilemsg.png (22,555 bytes)   

merryl0

2024-08-01 14:54

reporter   ~0028886

would it help if I go on the irc chat?

x42

2024-08-02 18:16

administrator   ~0028892

OK. There are 2 parts here.

1. global record-arm enable.
2. start transport (record)

This session has around 8100 Regions.

(1) saves the session. With a lot of regions that takes a bit of time (around 1-2 seconds)

(2) new regions are created on the timeline (to record into). This invalidates region-boundary cache. Rebuilding it took a lot of time due to an ill conceived algorithm.
with complexity O (N^3). Since Ardour 8.6-381-g460ecadc00 complexity is down to O(N), which significantly speeds this up.

x42

2024-08-02 18:16

administrator   ~0028893

Fixed in 8.6-381

Issue History

Date Modified Username Field Change
2024-07-30 11:31 merryl0 New Issue
2024-07-30 11:31 merryl0 File Added: log300724.txt
2024-07-31 14:03 paul Note Added: 0028868
2024-08-01 14:52 merryl0 Note Added: 0028885
2024-08-01 14:52 merryl0 File Added: missingFilemsg.png
2024-08-01 14:54 merryl0 Note Added: 0028886
2024-08-02 18:16 x42 Note Added: 0028892
2024-08-02 18:16 x42 Assigned To => x42
2024-08-02 18:16 x42 Status new => resolved
2024-08-02 18:16 x42 Resolution open => fixed
2024-08-02 18:16 x42 Note Added: 0028893