see previous post:
It’s strange, but it seems that reading/writing speed issues occur when using multiple monitors w/ KDE (possibly multiple taskbars as well).
I have tested w/ different systems and when I remove the screens on a multiscreen system, the copying speed is hundred times faster.
inxi -Fxxxz
System:
Kernel: 6.2.12-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
Desktop: KDE Plasma v: 5.27.4 tk: Qt v: 5.15.8 info: cairo-dock wm: kwin_x11
vt: 1 dm: SDDM Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Desktop System: Dell product: OptiPlex 7040 v: N/A
serial: <superuser required> Chassis: type: 3 serial: <superuser required>
Mobo: Dell model: 0HD5W2 v: A00 serial: <superuser required>
UEFI-[Legacy]: Dell v: 1.11.1 date: 10/10/2018
CPU:
Info: quad core model: Intel Core i7-6700 bits: 64 type: MT MCP smt: enabled
arch: Skylake-S rev: 3 cache: L1: 256 KiB L2: 1024 KiB L3: 8 MiB
Speed (MHz): avg: 3400 min/max: 800/3400 cores: 1: 3400 2: 3400 3: 3400
4: 3400 5: 3400 6: 3400 7: 3400 8: 3400 bogomips: 54417
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel HD Graphics 530 vendor: Dell driver: i915 v: kernel
arch: Gen-9 ports: active: DP-2,HDMI-A-1,HDMI-A-2 empty: DP-1,DP-3,HDMI-A-3
bus-ID: 00:02.0 chip-ID: 8086:1912 class-ID: 0300
Display: x11 server: X.Org v: 21.1.8 compositor: kwin_x11 driver: X:
loaded: intel dri: i965 gpu: i915 display-ID: :0 screens: 1
Screen-1: 0 s-res: 3840x1848 s-dpi: 96 s-size: 1016x488mm (40.00x19.21")
s-diag: 1127mm (44.37")
Monitor-1: DP-2 mapped: DP2 pos: top-center model: Samsung SyncMaster
serial: <filter> res: 1360x768 hz: 60 dpi: 84 size: 410x230mm (16.14x9.06")
diag: 470mm (18.5") modes: max: 1360x768 min: 720x400
Monitor-2: HDMI-A-1 mapped: HDMI1 pos: bottom-r model: Acer K242HL
serial: <filter> res: 1920x1080 hz: 60 dpi: 92
size: 530x300mm (20.87x11.81") diag: 609mm (24") modes: max: 1920x1080
min: 720x400
Monitor-3: HDMI-A-2 mapped: HDMI2 pos: primary,bottom-l model: Acer K242HL
serial: <filter> res: 1920x1080 hz: 60 dpi: 92
size: 530x300mm (20.87x11.81") diag: 609mm (24") modes: max: 1920x1080
min: 720x400
API: OpenGL v: 4.6 Mesa 23.0.2 renderer: Mesa Intel HD Graphics 530 (SKL
GT2) direct-render: Yes
Audio:
Device-1: Focusrite-Novation Focusrite Scarlett 2i2 type: USB
driver: snd-usb-audio bus-ID: 1-4:3 chip-ID: 1235:8016 class-ID: fe01
Device-2: USB MIDI Interface type: USB driver: snd-usb-audio bus-ID: 1-7:5
chip-ID: fc02:0101 class-ID: 0103
API: ALSA v: k6.2.12-1-MANJARO status: kernel-api with: aoss
type: oss-emulator
Server-1: sndiod v: N/A status: off
Server-2: JACK v: 1.9.22 status: active with: a2jmidid status: active
Server-3: PipeWire v: 0.3.70 status: off with: wireplumber status: off
Server-4: PulseAudio v: 16.1 status: active with: pulseaudio-jack
type: module
Network:
Device-1: Intel Ethernet I219-LM vendor: Dell driver: e1000e v: kernel
port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15b7 class-ID: 0200
IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter>
IF-ID-1: wireguard1 state: unknown speed: N/A duplex: N/A mac: N/A
Drives:
Local Storage: total: 1.39 TiB used: 241 GiB (17.0%)
ID-1: /dev/sda vendor: SanDisk model: SDSSDH3 500G size: 465.76 GiB
speed: 6.0 Gb/s type: SSD serial: <filter> rev: 20RL scheme: GPT
ID-2: /dev/sdb vendor: Silicon Power model: SPCC Solid State Disk
size: 953.87 GiB speed: 6.0 Gb/s type: SSD serial: <filter> rev: 916a
scheme: GPT
Partition:
ID-1: / size: 57.37 GiB used: 21.71 GiB (37.8%) fs: ext4 dev: /dev/sda2
ID-2: /boot size: 511 MiB used: 159.2 MiB (31.1%) fs: vfat dev: /dev/sda1
ID-3: /home size: 152.74 GiB used: 58.24 GiB (38.1%) fs: ext4
dev: /dev/sda3
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 30.0 C pch: 46.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 256 Uptime: 6h 1m wakeups: 0 Memory: 31.11 GiB
used: 3.6 GiB (11.6%) Init: systemd v: 252 default: graphical Compilers:
gcc: 12.2.1 clang: 15.0.7 Packages: pm: pacman pkgs: 1472 Shell: Bash
v: 5.1.16 running-in: konsole inxi: 3.3.26