Bug 352411

Summary:	checking for subfolders slows down browsing to a crawl
Product:	[Applications] dolphin	Reporter:	peacemaker3110
Component:	view-engine: general	Assignee:	Dolphin Bug Assignee <dolphin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	major	CC:	frank78ac
Priority:	NOR
Version First Reported In:	16.12.2
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description peacemaker3110 2015-09-07 23:32:10 UTC

i assume that automatic checking for subfolders was supposed to be a feature. but in reality it's a bug that causes major slowdowns and massive reads to disks, putting unnecessary stress on them. the best solution is to give an option to turn off this behaviour, when turned off make the arrow in the tree expand/disappear only when a folder is clicked. this will speed-up browsing significantly, especially on large folders.

Reproducible: Always

Comment 1 peacemaker3110 2015-09-08 19:13:26 UTC

you just have to enter a folder with a lot of subfolders (100+), and see how slow it is to list the contents, then when you scroll downin the tree it happens again

Comment 2 Frank Reininghaus 2015-09-10 21:34:24 UTC

Thanks for the bug report. This issue has been reported already.

*** This bug has been marked as a duplicate of bug 352348 ***

Comment 3 peacemaker3110 2015-09-13 13:54:41 UTC

i don't think it's a duplicate, as the other bug specifies only sshfs mounts in details view mode as the problem, which is just one manifestation of the problem described in this bug. i want to avoid a situation where some sshfs specific hack is applied to "fix" the bug, and we are still left with this behaviour in all other cases.

Comment 4 Frank Reininghaus 2015-09-13 14:13:06 UTC

(In reply to peacemaker3110 from comment #3)
> i want to avoid a situation where some sshfs
> specific hack is applied to "fix" the bug, and we are still left with this
> behaviour in all other cases.

Dolphin is entirely unaware of the underlying file system, so I don't think it would be possible to apply an sshfs-specific hack at all.