I am noticing that whenever I transfer over larger files 25GB+ there seems to be some throttling of the connection. When it initially starts out I am seeing 1Gbps+ in transfer speeds but after a few mins it will drop down to 30ish Mbps. This will stay like that for a little while then it will climb back up. 

My setup is as such:

Asus XG-C100C on the M/B cat6e cable plugged into a thunderbolt 3 dock that supports 10Gbase-T. My MacBook is connected via Thunderbolt 3 cable. 

The files are being moved from MBP internal SSD to NVME cache on my server. I have the MTU's set at 9000. I attached the syslog but let me know if you need to see something else. 

syslog.txt

Does the ram fill up when you start copying to unraid (check by running htop via ssh on unraid) and slow down once the memory fills up a bit? If so it means the memory fills while the transfer is quick and it has to then slow down while data written to the disk is catching up and clearing whats in ram. Adding more ram would help if this is the case. 

44 minutes ago, PeteAsking said:

Does the ram fill up when you start copying to unraid (check by running htop via ssh on unraid) and slow down once the memory fills up a bit? If so it means the memory fills while the transfer is quick and it has to then slow down while data written to the disk is catching up and clearing whats in ram. Adding more ram would help if this is the case. 

I’ll look into how to check that and report back