https://bugs.kde.org/show_bug.cgi?id=503430
Bug ID: 503430
Summary: Connecting my AOSP smartphone causes all filesystem
operations to significantly slow
Classification: I don't know
Product: kde
Version: unspecified
Platform: Fedora RPMs
URL: https://discussion.fedoraproject.org/t/connecting-my-s
martphone-to-my-pc-via-a-hub-causes-filesystem-slowdow
n/150633/4?u=rokejulianlockhart#:~:text=:speech_balloo
n:,a%20hub)%20causes%20filesystem%20slowdown
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: unassigned-b...@kde.org
Reporter: 4wy78...@rokejulianlockhart.addy.io
Target Milestone: ---
Created attachment 180700
--> https://bugs.kde.org/attachment.cgi?id=180700&action=edit
An Archive Of Unprocessed Performance Data After Connection
SUMMARY
Connecting my smartphone to my PC causes filesystem slowdown for all KDE
applications I've tried. That is, Dolphin, Gwenview, and the File Picker KDE
Portal (via Gittyup's Flatpak). This behaviour is new.
STEPS TO REPRODUCE
To reproduce the exact configuration I have (IDK how much applies):
1. Connect a SITECOM CN-386 4-port USB-C hub to the MB's TB4 port.
2. Connect a XAOSUN TB4 cable to the hub.
3. Connect a Fairphone 5 5G to the cable. On my smartphone, I have USB
debugging enabled.
OBSERVED RESULT
Every application which interacts with the filesystem slows to an unreasonable
amount.
EXPECTED RESULT
It shouldn't slow. It never did, until now.
SOFTWARE/OS VERSIONS
I've explicitly verified that this *affects*
`xdg-desktop-portal-kde-6.3.4-2.fc42.x86_64`, `dolphin-25.04.0-3.fc42.x86_64`,
and `gwenview-25.04.0-2.fc42.x86_64` (and, strangely,
`android-tools-35.0.2-3.fc42.x86_64` and `sudo-1.9.15-7.p5.fc42.x86_64`). The
DE and OS are undermentioned:
> Operating System: Fedora Linux 42
> KDE Plasma Version: 6.3.4
> KDE Frameworks Version: 6.13.0
> Qt Version: 6.9.0
> Kernel Version: 6.14.3-300.fc42.x86_64 (64-bit)
> Graphics Platform: Wayland
> Manufacturer: ASRock
> Product Name: X670E Taichi
I've also verified that this *doesn't* affect
`xdg-desktop-portal-gtk-1.15.3-1.fc42.x86_64`.
ADDITIONAL INFORMATION
I'll add some files with the undermentioned data contained:
> .
> ├── Flamegraphs
> │ ├── bad-adb.avif
> │ ├── bad-dolphin.avif
> │ ├── bad-gwenview.avif
> │ ├── good-adb.avif
> │ ├── good-dolphin.avif
> │ └── good-gwenview.avif
> └── Performance Data
> ├── Processed
> │ ├── bad-adb.data.perfparser
> │ ├── bad-dolphin.data.perfparser
> │ ├── bad-gwenview.data.perfparser
> │ ├── good-adb.data.perfparser
> │ ├── good-dolphin.data.perfparser
> │ └── good-gwenview.data.perfparser
> └── Unprocessed
> ├── bad-adb.data
> ├── bad-dolphin.data
> ├── bad-gwenview.data
> ├── good-adb.data
> ├── good-dolphin.data
> └── good-gwenview.data
>
> 5 directories, 18 files
This was originally reported at
https://discussion.fedoraproject.org/t/connecting-my-smartphone-to-my-pc-via-a-hub-causes-filesystem-slowdown/150633/4?u=rokejulianlockhart#:~:text=:speech_balloon:,a%20hub)%20causes%20filesystem%20slowdown.
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