| Summary: | Plasmashell freezes when taking screenshot | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Hegyi László <helaslo> |
| Component: | generic-performance | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | REPORTED --- | ||
| Severity: | normal | CC: | helaslo, kde, nate, noahadvs |
| Priority: | NOR | ||
| Version: | 6.0.4 | ||
| Target Milestone: | 1.0 | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Flamegraph of plasmashell when the problem occurs
Compressed perf data, its source is plasmashell when the problem happens Backtrace when the problem occurs Screenshot of Spectacle's settings window |
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Created attachment 169721 [details]
Compressed perf data, its source is plasmashell when the problem happens
Created attachment 169722 [details]
Backtrace when the problem occurs
Created attachment 169723 [details]
Screenshot of Spectacle's settings window
Forgot to mention, when this happens plasmashell uses 100% cpu I done some further digging around, seems to be not just when taking screenshots, but also happen at other clipboard accesses. Some more notes: I have clipboard history enabled, and the history size set ton 999 elements (the max what it would let me) I also take many screenshots, so my history is pretty full of images (maybe around 60%) Is it posible that Klipper re-saves every image at every clipboard modification? Does the issue go away if you switch history to the default size of 20? If that's too disruptive since it would delete your history, feel free to try with a new clean user account. Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone! Hi!
Sorry for the delay, didn't have time until now to perform some measurements, but here they are.
Steps to reproduce:
Create these two scripts:
#notify-until-success.sh
#!/bin/bash
notify-send "First"
while [ $? -ne 0 ]; do
notify-send "Retry"
done
#screenshoot.sh
#!/bin/bash
for i in {1..1000}
do
echo "$i"
spectacle -b -c
done
Set your clipboard history size to 999
Run screenshoot.sh (note: this will destroy your clipboard history)
This will fill your clipboard history with screenshots, maybe play a video, so the encoding times will take a bit longer
Start spectacle, set it up in a way that it takes a screenshot at startup, then copies it the clipboard
Keep spectacle running, open a new shell (so the time command only meassures the blockage time of plasmashell coming back, without manual closing of spectacle)
Run the following command:
time sh -c "spectacle && sleep 0.5 && ./notify-until-success.sh"
This takes a screenshot, and since plasmashell is completly blocked while this happens, notify send will only return when the tray is responsive again.
Decrease clipboard history size according to your taste, time it takes to run this will decrase
I have done this for a few datapoints, here they are:
999 0:03:47
950 0:03:32
700 0:02:13
500 0:01:54
250 0:00:50
150 0:00:28
125 0:00:15
75 0:00:01
Time is in Hour:Minute:Seconds
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Created attachment 169720 [details] Flamegraph of plasmashell when the problem occurs SUMMARY Plasmashell occosonaly freezes for over a minute when taking a screenshot STEPS TO REPRODUCE 1. Take a screenshot with PrintScreen button 2. Move spectacle's window around, maybe switch window focus a few times 3. Press printscreen again 4. Repeat above until freeze happens OBSERVED RESULT Freeze for over a minute EXPECTED RESULT No freeze SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20240512 KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.2.0 Qt Version: 6.7.0 Kernel Version: 6.8.8-1-default (64-bit) Graphics Platform: Wayland Processors: 8 × AMD Ryzen 5 2400G with Radeon Vega Graphics Memory: 23,4 GiB of RAM Graphics Processor: AMD Radeon RX 570 Series ADDITIONAL INFORMATION Attached flamegraph of running plasmashell, gdb backtrace and compressed perf data Also attached screenshot of settings