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IDProjectCategoryView StatusDate SubmittedLast Update
0006585ardourbugspublic2015-09-16 00:572017-10-20 18:12
Reportertimbyr Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
Product Version4.X git (version in description) 
Summary0006585: ALSA Backend requests different SCHED_FIFO priority than jack default
Descriptionjack 1 and 2 both use a default SCHED_FIFO priority of 10 AFAIK. The ALSA backend requests a priority of max - 20, which on linux is 79.

At least Fedora but perhaps other distributions setup a max rt-prio/SCHED_FIFO value of 70 so the ALSA backend fails to aquire rt scheduling privs on those systems.

I'm suggesting we make the requested SCHED_FIFO priority the same as the default jack value.

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travm1

2017-04-07 23:08

reporter   ~0019602

https://www.everipedia.com/Advanced_Linux_Sound_Architecture/
Here is a good read on ALSA

thalamus

2017-10-20 18:12

reporter   ~0020068

very useful, thanks travm

http://www.thalamus.co

Issue History

Date Modified Username Field Change
2015-09-16 00:57 timbyr New Issue
2017-04-07 23:08 travm1 Note Added: 0019602
2017-10-20 18:12 thalamus Note Added: 0020068