Bug 445161

Summary:	Kwave eats 100% CPU while recording
Product:	[Applications] kwave	Reporter:	Matthias Urlichs <smurf>
Component:	general	Assignee:	Thomas Eschenbacher <Thomas.Eschenbacher>
Status:	REPORTED ---
Severity:	normal
Priority:	NOR
Version First Reported In:	21.08.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Matthias Urlichs 2021-11-08 14:06:23 UTC

SUMMARY

Kwave busy-loops and thus eats 100% CPU while recording.

STEPS TO REPRODUCE
1. open the Record dialog
2. (possibly) select a PulseAudio input
3. click Record

OBSERVED RESULT

The computer's fan starts up, noising up my recording, because kwave eats 100% CPU.

EXPECTED RESULT

The computer's fan stays quiet.

Data point: Audacity requires ~10% on this machine, using the same settings.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.78
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION