Bug 492583

Summary:	Enabled file indexing causes huge slow down when opening Dolphin
Product:	[Frameworks and Libraries] frameworks-baloo	Reporter:	etfaker
Component:	Baloo File Daemon	Assignee:	baloo-bugs-null
Status:	RESOLVED DUPLICATE
Severity:	major	CC:	postix, tagwerk19
Priority:	NOR
Version First Reported In:	6.5.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description etfaker 2024-09-03 10:07:54 UTC

SUMMARY
While file indexing is enabled, Dolphin will freeze for 5-10 seconds when started.
I have smb shares / network drives added to my "remote places panel" but I don't think that this has anything to do with it as I am not logged into any of those shares when initially opening doplhin. Also the issue persists even after logging into the remote drives.
Disabling file indexing instantly fixes the issue.

Indexing: 
/home/username

Not indexing: 
/mnt
/run/media
/run/mount
/run/sambda

Indexing size: 1,7GB

System:
AMD Ryzen 7 Pro 6850U 16x 4,8GHz
32GB RAM
Solidigm P44 Pro NVME (6.000mbit/s read/write)

STEPS TO REPRODUCE
1. Enable File indexer
2. Open Dolphin

OBSERVED RESULT
Dolphin freezing

EXPECTED RESULT
Dolphin shouldn't freeze

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Latest stable Archlinux
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
No idea which kind of logs or outputs I could provide to help.

Comment 1 tagwerk19 2024-09-03 12:22:32 UTC

(In reply to etfaker from comment #0)
> ... While file indexing is enabled, Dolphin will freeze for 5-10 seconds when started ...
I've noticed Dolphin and Gwenview freeze occasionally, for 30 sec . I've not correlated it to indexing but to having "something" on the clipboard.

While stuck, try opening the clipboard widget, clear clipboard history and confirm. In my instance this immediately unblocked Dolphin.

Ref: Bug 411196. It was not related to KDE Connect and I still meet it although not as much as before.

Comment 2 etfaker 2024-09-03 12:24:20 UTC

(In reply to tagwerk19 from comment #1)
> (In reply to etfaker from comment #0)
> > ... While file indexing is enabled, Dolphin will freeze for 5-10 seconds when started ...
> I've noticed Dolphin and Gwenview freeze occasionally, for 30 sec . I've not
> correlated it to indexing but to having "something" on the clipboard.
> 
> While stuck, try opening the clipboard widget, clear clipboard history and
> confirm. In my instance this immediately unblocked Dolphin.
> 
> Ref: Bug 411196. It was not related to KDE Connect and I still meet it
> although not as much as before.

Thanks for the idea but it didn't help.
I cleared my clipboard + history, opened Dolphin -> Freeze

Comment 3 tagwerk19 2024-09-03 12:32:53 UTC

(In reply to etfaker from comment #2)
> ... Thanks for the idea but it didn't help ...
Are you using tags? or maybe have some saved searches? Anything that Dolphin might want to refresh when it starts?

Also check whether Baloo is actively indexing something (before you open Dolphin), you can watch by running "balooctl monitor" (or perhaps "balooctl6 monitor".

Comment 4 etfaker 2024-09-03 13:00:28 UTC

(In reply to tagwerk19 from comment #3)
> (In reply to etfaker from comment #2)
> > ... Thanks for the idea but it didn't help ...
> Are you using tags? or maybe have some saved searches? Anything that Dolphin
> might want to refresh when it starts?
> 
> Also check whether Baloo is actively indexing something (before you open
> Dolphin), you can watch by running "balooctl monitor" (or perhaps "balooctl6
> monitor".

No tags but I found the cause! 

Settings (Hamburger Menu) -> Show Panels -> Information

I just disabled that and it seems to have fixed the issue. 
Now the question is, why is the information panel causing this huge lag when opening Dolphin?

Comment 5 etfaker 2024-09-03 13:01:12 UTC

Yes, it is the info panel.

With dolphin already opened and enabling that info panel will cause the same lag/freeze as soon as the info panel is activated.

Comment 6 tagwerk19 2024-09-10 05:38:31 UTC

(In reply to etfaker from comment #5)
> Yes, it is the info panel ...
... Seemingly together with something else

I've tried various combinations of Baloo enabled, disabled, enabled-but-killed and haven't stumbled upon the delay. I don't know enough about how Dolphin queries Baloo, if there is anything special. If it just opened the index read-only, I don't think there should be a delay...

Comment 7 postix 2025-02-20 15:57:51 UTC


*** This bug has been marked as a duplicate of bug 400704 ***