Bug 485159

Summary:	Project ctags indexing can slow down kate shutdown / session switching
Product:	[Applications] kate	Reporter:	Benjamin Currie <seegold123a>
Component:	general	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	CONFIRMED ---
Severity:	wishlist	CC:	christoph, waqar.17a
Priority:	NOR
Version First Reported In:	24.02.1
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Benjamin Currie 2024-04-06 23:32:00 UTC

Kate does not crash, it just freezes for a dozen seconds or so. Viewing my system monitor a "ctags" process appears during the freeze and uses a lot of CPU. Then after the freeze it resumes as normal and the "ctags" process disappears.

STEPS TO REPRODUCE
1. Git clone a large C code base like the linux kernel
2. Save a session which involves being inside of the large project
3. Switch out the the session with "new session" or switch to another session within the "recent sessions" menu
4. Observe long freeze

Note it only seems to happen when switching out of the session, not when loading it in.

OBSERVED RESULT
A dozen second GUI freeze in Kate with the application turning grey for a bit

EXPECTED RESULT
No GUI freeze or at least some kind of loading bar to indicate something is happening.

SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.0.3 and Kate version 24.02.1

Comment 1 Waqar Ahmed 2024-04-07 17:03:22 UTC

Known issue.

An easier way to reproduce is to enable ctags support in project plugin, start Kate in a large project and then close it immediately. The shutdown of kate will take a long time.

Comment 2 Waqar Ahmed 2024-04-07 17:04:14 UTC

To fix this, we need to make the ctags process cancelable

Comment 3 Christoph Cullmann 2024-11-01 20:05:02 UTC

Would be a nice enhancement for any part of the project worker stuff. Patches welcome.