https://bugs.kde.org/show_bug.cgi?id=443885
Bug ID: 443885
Summary: Konsole is very slow to output text to screen
Product: konsole
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: konsole-de...@kde.org
Reporter: waqar....@gmail.com
Target Milestone: ---
SUMMARY
Konsole is super slow to output a lot of text to screen. This output can be
from any app for e.g., cat or debug output etc.
STEPS TO REPRODUCE
1. Open Konsole and type "cat some_big_file"
2. Notice that konsole takes a lot of time
Also, I must note here that this isn't just some non-practical problem. "cat
xyz" is just an example. I face this issue while working on an app which spews
a lot of text to the screen when starting up and due to this slowness it is
very slow to launch and test the app every time. Doing some profiling shows
that 90% of the time is being spent in just (de)allocations.
KDE Frameworks Version: master
Qt Version: 5.15.2
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