supacupa

Thank you so much for your help. I'll let you know how it goes.

I will need to install iperf. Which I'll do after I'm done preclearing a disk.

That's a very good point, but it seems to be that the network interface is the bottleneck. To test I have a 2 tb NVME that's it's own share that's speed limited to about about 370 MB/s, a RAM disk I've added to the server that's limited to about 370 MB/s, and the LibreSpeed docker can't get higher than about 4000 Mbps for download and 1867 Mbps for upload. If it helps: The server is a 22 core Xeon and it has 64 GB of RAM. I have several 12 tb SAS disks in the primary array and my cache array is made up of four SSDs with DRAM in RAID 1. I am able to achieve excellent speeds internally. Recently I was able to get over 1.8 GB/s out of the array while testing. VMs seem to be limited to 10 gbit which I believe is a limitation of the network driver.

Thanks! I've made those changes and am not seeing any differences. Do I need to restart anything in Unraid to see a change?

Yes, there are 1 gbit devices. I'll disable jumbo frames. Disable NIC Offload? is set to Yes in TipsAndTweaks, should I set that to No?

One of the steps I've recently taken was to disable flow control on my desktop, 40 gbit switch, and server. I went ahead and reenabled it on everything again and I can't seem to see any difference in it being on or off. I've found that file transfers run faster with jumbo frames enabled, though.

I have a Mellanox 40 gbit network card running in ethernet mode that's been installed in my Unraid server for some time. Before I installed Unraid, I was running Ubuntu server and able to get most of the speed out of my 40 gbit card. After switching to Unraid the speed dropped to around 4 gbits. I tried fixing the problem but eventually gave up due to other things I needed to take care of. After making some upgrades to my server I've decided to try and resolve this issue again so I can make full use of the high speed drives in my server. Unraid version is currently 6.11.5, but this problem has existed for the last few versions. Basically, I have no idea where to start diagnosing the issue. I do recall I was able to get 10 gbits out of the card during my attempts to resolve the issue in the past, but I really can't recall what I may have done to get that to happen.

Thanks! That helped a lot! I wish more people did this!

NAS, Game server, VM server, MySQL server, Web server, Home manager, Chia farmer, I use it for a lot of stuff. It's a 22 core Xeon with 64 gb of RAM, 17 SAS drives, and 4 SSDs used for cache. I have a 40gbit connection between it and my main workstation. Unraid makes managing everything so dang easy.