Writing more than 5 GB to a USB thumbdrive is much slower on 24.04 when compared to 22.04. What action might bring the transfer rate on 24.04 in line with that observed on 22.04?
Using hardware of identical configuration (Dell 7020 desktop), one loaded with Xubuntu 22.04, the other with Xubuntu 24.04 and two identical thumb drives. The thumb drives are formatted NTFS and cleaned prior to each test run. The thumb drives are referred to here as PEACH and ARCTIC. The data being copied resides in several files on the primary harddrive of each system. The size of each file ranges from a few bytes to one at 3.3GB.
22.04 took 9 minutes to ARCTIC and 10 minutes to PEACH24.04 took 127 minutes to ARCTIC and 142 minutes to PEACH
At first, 24.04 was reporting the copy function complete quite a bit faster than that measured on 22.04. Once the accumulated total of data reported copied reached about 5GB, 24.04 became very slow.
An additional pair of runs was made using PEACH after adding the command sync just prior to completion. Those run results are:
22.04 took 30 minutes total with sync - sync itself took 21 minutes24.04 took 175 minutes total with sync - sync itself took 10 minutes
A similar thumbdrive, formatted ext4 took 47 minutes on 24.04 of which the sync was 10 minutes. This same ext4 formated drive took 34 minutes of which the sync was 11 minutes.