https://bugs.kde.org/show_bug.cgi?id=421376
Bug ID: 421376
Summary: Krita hiccups while painting every few seconds
Product: krita
Version: 4.3.0-beta1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: krita-bugs-n...@kde.org
Reporter: tamtamy.tym...@gmail.com
Target Milestone: ---
SUMMARY
When my PC is under a heavy load, usually when my RAM is kinda full (I guess
around 80-90%?) even though CPU is free, Krita sometimes has a hiccup. This is
not related to autosave since it happens way too often. It seems to be regular.
Note: there is a chance it happens under lower load as well but I don't notice
it as much?
STEPS TO REPRODUCE
1. Open programs to take up a lot of RAM.
2. Paint one consistent line for a long time, quite quickly. (It doesn't need
to be one stroke, but it helps seeing the problem).
EXPECTED RESULT
The line is being drawn all the time consistently.
OBSERVED RESULT
Sometimes the line stops, but then restarts - it is just a visual lag, since
the underlying stroke has the same shape as other parts of the stroke.
ADDITIONAL INFO
The lag happens around every 5 seconds.
Also when I tried to use a simple applet, I had a problem recording the video
because I had a huge lag all the time - and the stroke shape was different,
because, I believe, Krita didn't get enough tablet events because of the heavy
performance needs. That suggests that in this case it might be something inside
of Krita instead of my system?
NOTE: It can of course still be my system...
Also Krita 4.3.0 I think has the same issue, and I'm not sure if it's a
regression or not. I will check further. I'd like to leave it here so other
people (1) can see the video and check if it looks familiar, (2) can tell me
it's all because my system is bad and doesn't deserve a cookie, or (3)... maybe
someone would guess the reason.
I will check other versions to see which has it.
Recorded screen video:
https://drive.google.com/open?id=1KRegM9sjgjqhWadxpBTz7OK59Y6XbNef
SOFTWARE/OS VERSIONS
Krita git version: built upon b9b20f3376
Krita
Version: 5.0.0-prealpha (git a23d232)
Languages: en_US, en, en_US, en, en_US, en, pl, pl_PL, pl
Hidpi: true
Qt
Version (compiled): 5.11.1
Version (loaded): 5.11.1
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 5.3.7-050307-generic
Pretty Productname: Linux Mint 19.3
Product Type: linuxmint
Product Version: 19.3
Desktop: X-Cinnamon
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