Bug 422281

Summary:	Star Profile Causes Laggy KStars/Ekos Performance
Product:	[Applications] kstars	Reporter:	MountainAirCA
Component:	general	Assignee:	Rob <rlancaste>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version First Reported In:	3.4.2
Target Milestone:	---
Platform:	Other
OS:	macOS
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Video of blinking toolbar

Description MountainAirCA 2020-05-31 05:12:57 UTC

SUMMARY

The Star Profile feature is awesome, but once I launch it in the Guiding tab (to adjust focus prior to guiding) the operation of KStars/Ekos slows down immensely.  This continues to occur even after closing that feature, and the only way to correct it is to disconnect from RPi, quit and re-launch KStars.

STEPS TO REPRODUCE
1. Connect to remote RPi
2. Go to Guiding tab (it probably happens in all image viewer windows, though)
3. Loop image capture, and enable the star profile to see the FWHM value.
4. When done, close the star profile.

OBSERVED RESULT
Performance of KStars/Ekos is still quite slow, like the star profile feature is still calculating star focus in the background.

EXPECTED RESULT
Performance should return to normal.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 10.15.4
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 MountainAirCA 2020-06-18 07:26:01 UTC

Also, why is the star profile feature not available in StellarMate (when VNCing to RPi)?  RPi not powerful enough?

Comment 2 MountainAirCA 2020-08-25 03:51:34 UTC

Created attachment 131160 [details]
Video of blinking toolbar

Video of blinking toolbar

Comment 3 MountainAirCA 2020-08-25 03:52:38 UTC

Update:  This CPU consumption after closing the Star profile no longer seems to be an issue.  Within a few seconds of closing the window on the Mac, CPU drops from ~95% to a more-normal ~20%.  However, note that the button bar on the top of the capture window on the Guiding tab continues to flash during mouseover.  Eventually this stops and everything seems OK.  See attached video.

Comment 4 MountainAirCA 2020-12-23 16:57:13 UTC

This no longer appears to be an issue in 3.5.0.  Nice!  Closing.