Experiencing 10GbE connectivity problems
Experiencing 10GbE connectivity problems
remember the old configuration worked fine... now things are not going well. I'm using a XG16 switch and running two PCs—one with a 4790k and another with an 8700k. The server is an Asus XG-C100F, and the main PC uses the copper version. These aren't the top cards, but they should perform better. The setup has been in place in my office until it's ready for the server room. I've used a 3-meter DAC cable with SFP+ for UNIFI 10gbTek, tried a 0.5-meter version, and also a CAT6A cable. A CAT6 and CAT5e gave consistent results. Iperf3 works at 1.8-2Gbps, and in NVME transfers it reaches up to 2.5Gbps, though still not ideal. I've tried jumbo frames, but receiving packets, transmitting packets—nothing seems to work. It's still pretty disappointing.
Here are the available drive models and their speeds. Yes, there may be a maximum speed limit for storage performance.
iperf relies on RAM rather than storage speed, yet transfers between an MP510 M.2 and an SN750 M.2 card exceed 3GB/s—this is what catches my attention.
File transfers are quicker, mainly by dragging files using iperf. This doesn’t really help identify problems, though the speed is around 10Gbps and it’s quite reliable. Edited September 26, 2019 by RasmusDC
The exciting aspect is it's perfectly limited to 2.5 GBit. impressive!
I was the one in the spotlight... sitting with my tears. (Not really) I had a cold Pepsi Max... and the 2.5Gbit was giving me trouble. Then I checked bus speeds, and the gigabit card was running X1 on the server... connected through the X16 port. Now I have... 7.2Gbit, which actually works because it wasn’t an NVME drive but an SSD plus an IronWolf. That gives me 550MB per second plus a 250MB per second drive... so it seems to function. Probably I need a Threadripper now due to the lack of PCI-E lanes. At 41, I’m getting a little frustrated with myself for not solving it faster. 1920x yeah, it’s outdated, but affordable, or wait for the Gen 3... I bet my wife would say... "STOP WASTING ALL OUR MONEY"... That probably means Gen 3...