Bug 436097

Summary:	kate stops responding with big file
Product:	[Applications] kate	Reporter:	Germano Massullo (Thetra) <germano.massullo>
Component:	general	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	kde.podagric, kde
Priority:	NOR
Version First Reported In:	20.12.2
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:	https://invent.kde.org/frameworks/ktexteditor/-/commit/98424e067240fc6243434631ae2f95f5e9aca49e	Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	kate valgrind affected file

Description Germano Massullo (Thetra) 2021-04-23 15:23:07 UTC

Created attachment 137833 [details]
kate valgrind

1) Open the TXT inside the attached file.
2) press CTRL + END in order to reach the end of the file
3) press CTRl + F and search for tmp
4) Kate will stop responding and increasing RAM usage till you kill the process

I collected output from
$ valgrind --leak-check=full \
           --show-leak-kinds=all \
           --track-origins=yes \
           --verbose \
           --log-file=kate-valgrind-out.txt \
           kate

Comment 1 Germano Massullo (Thetra) 2021-04-23 15:23:49 UTC

Created attachment 137834 [details]
affected file

Comment 2 Michal Humpula 2021-07-16 04:12:03 UTC

Thanks for the report. I believe the observed slowdown was fixed in the latest ktexteditor.

Comment 3 Podagric 2021-07-22 20:45:57 UTC

this has really improved navigation, but there are still slowness issues when copying large selections.
Example: when selecting 40 thousand lines and copying or cutting them to another tab

Comment 4 Michal Humpula 2021-07-23 04:47:50 UTC

Nice. I guess there will be similar issue. IMHO there is no reason why copy should not be fast. The cutting case might be more difficult.