https://bugs.kde.org/show_bug.cgi?id=481311
Bug ID: 481311
Summary: KDirOperator freezing when trying to parse a folder
with more than 178 files
Classification: Frameworks and Libraries
Product: frameworks-kio
Version: 5.248.0
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: kio-bugs-n...@kde.org
Reporter: j...@kdenlive.org
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
***
Tested on Windows 10 / 11 (a similar issue was reported on Linux AppImage, but
I was not able to personally reproduce on linux)
Creating a KDirOperator, and setting its url to a folder with more than 178
files (that number might depend on your system), KDirOperator stops working,
the files are not listed. This only happens on KF6.
I tried to investigate a bit, this seems related to the connectionbackend.cpp
file:
https://invent.kde.org/frameworks/kio/-/blob/master/src/core/connectionbackend.cpp?ref_type=heads#L268
When we hit this condition (jumbo packet), commandReceived(task) is never
emitted.
On my test system (Windows 11), this condition is hit when I have 178 or more
files in a folder.
This code didn't change in 10 years, so not sure why I only ht this bug now. On
linux, even when parsing a folder with > 600 files, I never hit that condition
for jumbo packets.
***
STEPS TO REPRODUCE
1. Open a Windows KF6 KDE App using KDirOperator (in my case only tested with
Kdenlive):
https://files.kde.org/kdenlive/unstable/kdenlive-24.02.0-RC_A_-x86_64.exe.mirrorlist
2. Open the "Project" menu, select "Add clip or folder...", this opens a file
dialog using a KDirOperator
3. Browse to a folder with like 200 files
OBSERVED RESULT
Dialog is freezing
EXPECTED RESULT
Dialog listing the files
SOFTWARE/OS VERSIONS
Windows: 11, package built with Craft
KDE Frameworks Version: 5.248.0
Qt Version: 6.6.1
ADDITIONAL INFORMATION
I am available if more infos are needed
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