Declining transfer rates and low overall performance

Hi fam,

Now having some time off work due to illness. Finally have time to try to fix up my computer. I mention this in hope y’all bear with me as I do not have all my mental facilities.

I am running into an issue where my transfer speeds decline rapidly. Small and large files. I can’t pin down the root of the issue.

For example, here is a transfer of a 38GB file. One drive to another drive on the same computer.

Start:

Screenshot at 2024-02-13 14-02-42

Over time:

What I did not capture is transfer speeds declining to the 300MB/sec area, wasn’t fast enough.

Setup:

Ubuntu MATE
Caja file manager
multiple Solidigm P41 Plus 2TB M.2 2280 PCIe 4.0 NVMe Gen4 (I think these are DRAM-less?)

This is reproducible transferring to other P41 drives i.e. not just A to B but all C to B or C to A.

Please let me know your thoughts.

Best,

WWED

Do not have this issue with windows.