what you really need to make sure is that the device has really negotiated usb 3.2 gen2x2 (20 Gbps) and that are no funky business going on with usb hubs.
Thanks for testing!
Thanks for testing!
Realtek 10 GbE USB Adapters might be on the way?
- Thread starter jerrythea
- Start date
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There are many thunderbolt controller that DO NOT do USB 3.2 Gen2x2 (20Gbps). This is a very commonly used one
Ah nice catch; that may explain the reduced performance in general on Tiger Lake. My Meteor Lake system has other issues impacting the upload speeds in general, but a moderate hit is still seen when running tests bidirectionally (at least on the upload bandwidth.) Unfortunately there doesn't appear to be an API call in Win11 to determine link speed above USB 10gbps, so even on this laptop it's hard to confirm that it's linked properly; that being said, I don't think a perfect 9.x Gbps unidirectional iperf score would be possible without USB 20Gbps negotiation due to USB overhead.
RTL8127 PCIe 4.0 x1 is on alibaba £20 in bulk
£26 for a single sample
not on aliexpress yet
£26 for a single sample
not on aliexpress yet
Im going to wait for a 3.0/4.0 x4 card
one of my machines can use the x1 card but one needs x4
www.alibaba.com
www.alibaba.com
one of my machines can use the x1 card but one needs x4
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Did some additional testing with a USB3 2x2 20Gbps pcie card and the RTL8159 on Linux using the r8152 2.20.1 dkms driver to a system on a 100Gbe link, and the results were much more promising: was able to sustain 9+ Gbps bidirectionally. Both these iperf3 runs were kicked off at nearly the same time in opposite directions.
Long story short, it looks like the Linux Realtek USB driver is now more mature than the Win11 driver, which is a reversal from what I saw when the RTL8157 (5gbe) adapters were new.
Code:
iperf3 -c 192.168.1.100
Connecting to host 192.168.1.100, port 5201
[ 5] local 192.168.1.11 port 56688 connected to 192.168.1.100 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.09 GBytes 9.40 Gbits/sec 180 782 KBytes
[ 5] 1.00-2.00 sec 1.09 GBytes 9.40 Gbits/sec 200 713 KBytes
[ 5] 2.00-3.00 sec 1.09 GBytes 9.39 Gbits/sec 246 721 KBytes
[ 5] 3.00-4.00 sec 1.08 GBytes 9.31 Gbits/sec 212 708 KBytes
[ 5] 4.00-5.00 sec 1.08 GBytes 9.31 Gbits/sec 164 721 KBytes
[ 5] 5.00-6.00 sec 1.09 GBytes 9.34 Gbits/sec 124 721 KBytes
[ 5] 6.00-7.00 sec 1.08 GBytes 9.29 Gbits/sec 212 649 KBytes
[ 5] 7.00-8.00 sec 1.09 GBytes 9.38 Gbits/sec 224 581 KBytes
[ 5] 8.00-9.00 sec 1.09 GBytes 9.37 Gbits/sec 228 687 KBytes
[ 5] 9.00-10.00 sec 1.05 GBytes 8.98 Gbits/sec 681 561 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.8 GBytes 9.32 Gbits/sec 2471 sender
[ 5] 0.00-10.00 sec 10.8 GBytes 9.32 Gbits/sec receiver
iperf Done.
Code:
iperf3 -c 192.168.1.11
Connecting to host 192.168.1.11, port 5201
[ 5] local 192.168.1.100 port 56742 connected to 192.168.1.11 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.10 GBytes 9.42 Gbits/sec 0 2.06 MBytes
[ 5] 1.00-2.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.27 MBytes
[ 5] 2.00-3.00 sec 1.09 GBytes 9.38 Gbits/sec 0 2.27 MBytes
[ 5] 3.00-4.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.27 MBytes
[ 5] 4.00-5.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.27 MBytes
[ 5] 5.00-6.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.27 MBytes
[ 5] 6.00-7.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.27 MBytes
[ 5] 7.00-8.00 sec 1.09 GBytes 9.39 Gbits/sec 0 2.38 MBytes
[ 5] 8.00-9.00 sec 1.09 GBytes 9.36 Gbits/sec 1165 1.71 MBytes
[ 5] 9.00-10.00 sec 1.09 GBytes 9.38 Gbits/sec 0 1.92 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec 1165 sender
[ 5] 0.00-10.00 sec 10.9 GBytes 9.38 Gbits/sec receiver
iperf Done.Long story short, it looks like the Linux Realtek USB driver is now more mature than the Win11 driver, which is a reversal from what I saw when the RTL8157 (5gbe) adapters were new.
As much hate as Realtek received in the past, they are carrying the affordable multigig home market, I think this is the first pure USB 10GbE Chipset. I'm keen to see what it can do without USB3 2x2, potentially might squeeze more performance than 5GbE adapters from USB3 10Gbps ports as @jmsq has tested. Waiting for it to drop on Aliexpress.
Now that I've suddenly realized my HP EliteMini G9 600 Proxmox server has a 20 Gbps USB-C port, I'm now very interested in these. I'm sure an LACP bond with my Aquantia 10 GbE NIC will be stable and great for home server applications. </s> (Kind of sarcastic; I think it'll get there eventually so long as Realtek keeps pushing driver updates.)
Is there a reason you ran two separate tests instead of one test with the
--bidir flag? I've been curious for a while if the --bidir flag doesn't actually work well; it always seems to give me strange results when I use it, but that could be me not knowing what I'm doing.My luck with
--bidir has been inconsistent, and this felt like a more real-world test, hence why I did it that way. Both ways definitely exposed problems with the Windows 11 drivers at least.I'm glad to hear you say this. I experienced the same, and just assumed that I either didn't know what I was doing or that the dongle itself was terrible.
It didn't even occur to me to try a manual test. I'll have to do that soon.
My order showed up today. No surprises so far and it works well in Windows 11 with iperf3 and Speedtest. Haven’t tested in Linux yet, but that’s next on my list.Im going to wait for a 3.0/4.0 x4 card
one of my machines can use the x1 card but one needs x4
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On Windows 11:
Code:
PS > .\iperf3.exe -c 192.168.1.11
Connecting to host 192.168.1.11, port 5201
[ 5] local 192.168.0.65 port 62769 connected to 192.168.1.11 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.01 sec 932 MBytes 7.75 Gbits/sec
[ 5] 1.01-2.01 sec 938 MBytes 7.82 Gbits/sec
[ 5] 2.01-3.01 sec 929 MBytes 7.86 Gbits/sec
[ 5] 3.01-4.01 sec 940 MBytes 7.82 Gbits/sec
[ 5] 4.01-5.00 sec 912 MBytes 7.76 Gbits/sec
[ 5] 5.00-6.00 sec 925 MBytes 7.75 Gbits/sec
[ 5] 6.00-7.00 sec 916 MBytes 7.68 Gbits/sec
[ 5] 7.00-8.01 sec 931 MBytes 7.77 Gbits/sec
[ 5] 8.01-9.01 sec 934 MBytes 7.83 Gbits/sec
[ 5] 9.01-10.01 sec 944 MBytes 7.92 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.01 sec 9.08 GBytes 7.80 Gbits/sec sender
[ 5] 0.00-10.01 sec 9.08 GBytes 7.79 Gbits/sec receiver
iperf Done.Much better than I expected, too.
For most of us that would be buying something like this, a solid 7.8-8 Gbps would be more than enough, I think.
For most of us that would be buying something like this, a solid 7.8-8 Gbps would be more than enough, I think.