Bug 470683 - Extreme speed decrease on 1GB+ files
Summary: Extreme speed decrease on 1GB+ files
Status: REPORTED
Alias: None
Product: frameworks-kio
Classification: Frameworks and Libraries
Component: general (show other bugs)
Version: 5.106.0
Platform: Fedora RPMs Linux
: NOR major
Target Milestone: ---
Assignee: KIO Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-06-05 22:46 UTC by Henning
Modified: 2023-06-10 14:45 UTC (History)
2 users (show)

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Description Henning 2023-06-05 22:46:06 UTC 
I am sure this bug is extremely old and known.

Just wanted to report, its still happening. 

Example: copying the 3,8GB openSuse microOS iso from btrf Fedora Kinoite LUKS encrypted to an empty exFAT drive (Ventoy). Using cp in Terminal it took 40sec or so, using Dolphin it took 3min or more, with a drastic decrease.

Specified App:
kf5-kio-file-widgets-5.106.0-1.fc38.x86_64
kf5-kio-widgets-libs-5.106.0-1.fc38.x86_64
kf5-kio-core-5.106.0-1.fc38.x86_64
kio-fuse-5.0.1-5.fc38.x86_64

--- Software ---
OS: Fedora Linux 38.20230605.0 (Kinoite)
KDE Plasma: 5.27.5
KDE Frameworks: 5.106.0
Qt: 5.15.9
Kernel: 6.3.5-200.fc38.x86_64
Compositor: wayland

--- Hardware ---
CPU: AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx
RAM: 13.5 GB
GPU: AMD Radeon Vega 8 Graphics
Video memory: 2048MB
Comment 1 Henning 2023-06-05 22:46:33 UTC 
* btrfs Fedora with Luks
Comment 2 Henning 2023-06-10 14:45:46 UTC 
more detailed:

I try to copy a 3GB iso to a usb stick.

0-40% goes in a few seconds, after that it slows down. 40-50% takes over 30s and it seems to slow down even more

The only message I got was:

kf.kio.workers.file: Couldn't preserve group for "/run/media/user/4144-C9F2/Fedora-Kinoite-ostree-x86_64-37-1.7.iso"

But It guess this is due to the USB stick being FAT32, no support for groups, permissions