Slow bladebit 3.1.0 writing on hdd disk and funny dependence on Ubuntu

[MateuszWaliczek]

Hello
I found funny error or bug/ I don't know.

system: Ubuntu 22.04 LTS
dell t7600 256RAM GTX 1080Ti

ploting c06 time: ~5minutes
but writing on hdd is funny (obserwed on bladebit process and writing time of course)

When I test all my hdd on KDISKMARK i have above 200MiB on write and read.

But when bladebit final save plots my speed is 80-90MiB (WD) or 140-150Mib (Seagate) - no, I'm not kidding. I confirmed these on 30 different hard disks Seagate and WD 14-18TB.

Seagate writing C06 - above 400 sec
WD - above 800 sec

M2 disk writing 30-35sec

But ! When I move for example 5TB from one to another hdd in file menager - transfer is above 200 (full speed of these disks). Only when bladebit save final plot I have low speeds.

Seagate for example: ST18000NM000J-2TV103
WD for example: WDC WD180EDGZ-11B2DA0

One thing I'm sure: It's not ubuntu problem because I have full speed on disk when I need it to move a lot more than disk buffer.

Any ideas? : )

[MateuszWaliczek]

NTFS or Ext4 files system doesen't matter

[MateuszWaliczek]

Bladebit 3.0 - same

[harold-b]

What happens when you run iotest with the drives in question? Do you get the expected speed?