Bug 445501

Summary:	Context menu hangs before opening when a very large number of files are selected
Product:	[Applications] dolphin	Reporter:	Henry Pfeil <hpfeil>
Component:	general	Assignee:	Dolphin Bug Assignee <dolphin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	wishlist	CC:	kfm-devel, nate
Priority:	NOR	Keywords:	usability
Version:	21.08.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Henry Pfeil 2021-11-14 20:20:28 UTC

SUMMARY
***
In video post-production, I typically extract over a hundred thousand files in a directory. If I select 4,000 files and right-click, I can go get a sandwich and a beer before the copy/delete pop-up appears. I selected a 30Gb file for deletion, but dolphin cannot delete, it can only move to trash, which in this case is on a different drive; it's been ten minutes and dolphin is still moving that 1 file to Trash. Whenever I have to delete over a thousand files, I launch Filezilla. Those developers have discovered a secret way to delete thousands of files instantly. Perhaps they could share their secret with dolphin?

STEPS TO REPRODUCE
1.  Do anything involving thousands of files or tens of gigabytes in size.

OBSERVED RESULT
Nothing for a very long time. 

EXPECTED RESULT
Expect no difference between selecting one file or ten thousand.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION
File system: BTRFS, SSD
Kernel Version: 5.15.2 (64-bit)

Comment 1 Nate Graham 2021-11-23 19:17:04 UTC

You can delete the file directly by either holding down the shift key while the context menu is open, or by enabling the off-by-default "Delete" plugin for the context menu.

Let's use this bug report to track the issue displaying the context menu when so many files are selected.

Does the same thing happen if you select a gigantic number of files on the desktop and right-click? Or navigate to the folder with a gigantic number of files in the open/save dialog and do it there? If it happens everywhere, the issue is probably in KIO. If it ony happens in Dolphin, the issue is probably somewhere in Dolphin's own code.

Comment 2 Bug Janitor Service 2021-12-08 04:35:33 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 3 Bug Janitor Service 2021-12-23 04:48:22 UTC

This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!