I can, but I don't have another cable to test with on hand. I ordered new lamps referenced above and fiber cable last night, so I'll try that once they arrive.You can't move one of them close to the other for the sake of testing/debugging?
I can, but I don't have another cable to test with on hand. I ordered new lamps referenced above and fiber cable last night, so I'll try that once they arrive.You can't move one of them close to the other for the sake of testing/debugging?
Glad to see my name next to "things worked out", and not "that no good lousy so and so"!I just replaced the lamps and cable with OM3 cable as suggested above by @Quasduco and I'm getting 8+Gbps now via iperf between the two machines, and 300-400 MB/s over SMB to my fileserver. Now, I'm a happy camper. Thanks to everyone for their help
Awesome!I just replaced the lamps and cable with OM3 cable as suggested above by @Quasduco and I'm getting 8+Gbps now via iperf between the two machines, and 300-400 MB/s over SMB to my fileserver. Now, I'm a happy camper. Thanks to everyone for their help
I used this cable originally. It shipped fast and was well packaged, it just didn't work for me.Awesome!
Which cables were you using before and if you recall which seller? Might help me, and someone else out in the future
Sure, I used these transceiversHi Rubylaser,
May I know exactly which adapters you used and the OM3 cable that came together for you?
Thanks again for your helpGlad to see my name next to "things worked out", and not "that no good lousy so and so"!
With actual workloads? Or iperf?I have been battling this problem for a long time now with no real effects to get me to 10G speeds.
You need to use -P 8 on the iperf client command line. That's it, don't mess with nic RSS settings.Max number of RSS Processors is set to 8
RSS Base Processor Number is set to 8
I think those are the right ones to change ?
This showed no difference is speed. I will restart when I can and see if that fixes it.
Yup, that should do it. I don't remember if you need to run the server with -P 8 too, I think I had to for one of the iperfs (iperf or iperf3) but I can't recall which.I used this
iperf3.exe -w 1024k -P 8 -i 2 -t 30 -c 10.0.0.198
Here's iperf3 with 8 streams (2 threads according to top):There is no need to run multithreaded iperf tests. ConnectX-2 and ConnectX-3 is capable of maxing at 9.8Gbps single stream. Just make sure your PC is up to the task at it takes some CPU power. I had an issue with my old PC with Core i7 2600k OC-ed to 4.3GHz where just opening up MPC-HC (video player) made the test drop to 4.8Gbps for RX test. Do make sure you have recent firmware on them. I didn't get full speed on my ConnectX-3 until it was upgraded.