Menu
What's new
By:
Filters Better Search

Search results

  • SNBForums Code of Conduct

    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!

  1. U

    Testing limits of home Ethernet wiring

    I haven't done any stack tweaking before and the software let me save the state before the tweaks so I can go back. It also has a Windows Default setting that I could try, I suppose. The closest to a clean install that I have is a Windows-to-go USB stick. Wouldn't I need two machines running...
  2. U

    Testing limits of home Ethernet wiring

    Someone on Reddit pointed me to a utility to tweak the network stack and I used it to tweak the parameters to "optimal" TCP Optimizer I get better results between two laptops though they do taper off as the test runs iperf3 -c 192.168.2.200 -w 256K Connecting to host 192.168.2.200, port 5201...
  3. U

    Testing limits of home Ethernet wiring

    I will try that though John on this thread is able to get full performance with the latest drivers.
  4. U

    Testing limits of home Ethernet wiring

    The reviews say that the 5G adapters cap out at 3.x because of USB 3.2 Gen 1 overhead. I should try out some PCIe 2.5G adapters to see if I have the same issues that I'm having with USB.
  5. U

    Testing limits of home Ethernet wiring

    Will have to wait on a maintenance window on my ESXi Server for that. Which begs the original question of why the poor performance between laptops using Intel controllers and running Windows rather than Linux. Firmware revision in the USB dongles? Is there another manufacturer of USB to 2.5...
  6. U

    Testing limits of home Ethernet wiring

    I ran the Firewall Troubleshooter with iperf3 running and it found something to fix after which I can get performance results. The bad news is that it is clocking just shy of a gigabit. I wonder if this is because the ports hang off an ASM1042 on this motherboard since the CPU utilization stays...
  7. U

    Testing limits of home Ethernet wiring

    I ran iperf3 - s bound to both IP addresses (but did not get a second Defender popup notification) When I run without binding, I get 7+ Gbps but Task Manager shows no activity on the wires so I'm assuming the loopback interface equivalent of Windows is being used. If I use -B, I get the...
  8. U

    Testing limits of home Ethernet wiring

    I plugged both into my desktop and configured one as 192.168.2.100 and the other as 192.168.2.101. I confirmed that both are showing up in Network Status I then opened up two cmd windows and ran the server and the client iperf3 as follows: iperf3 -B 192.168.2.100 -s iperf3 -B 192.168.2.101 -c...
  9. U

    Testing limits of home Ethernet wiring

    I will try combinations of Linux and Windows tomorrow in the interest of science but it is very aggravating that there is something different in my Windows laptops that is turning out to be difficult to pinpoint. Windows Defender Firewall?
  10. U

    Testing limits of home Ethernet wiring

    So I got my USB-C female to USB-A male adapters today and swapped one laptop with another that did not have any USB-C connectors but only USB 3.0 Type A ones. The iperf3 results are still sub 2Gbps. Could you share your driver version? I'm on the latest from the Realtek website. Another...
  11. U

    Testing limits of home Ethernet wiring

    I will pursue this in the background since the primary goal was not deployment but rather testing. Thanks for your help.
  12. U

    Testing limits of home Ethernet wiring

    Confirmed all the offloads enabled, no jumbo frames, flow control enabled. No settings in the driver for interrupt moderation enabled or receive side scaling enabled. I did check all the in-wall cables with Linux and they all show iperf3 at 2.35Gbps. Thanks
  13. U

    Testing limits of home Ethernet wiring

    Everything was default but I will look into the adapter settings. Those would be through the device manager, right? In the meantime, I have good news! I made two bootable Ubuntu 20.04 flash drives and booted the laptops with those. Now iperf3 shows 2.35Gbps on the link in both directions and...
  14. U

    Testing limits of home Ethernet wiring

    High performance power plan, both laptops on AC Power and two parallel threads starts out fast and then slows down but the threads are similar in throughput: Accepted connection from 192.168.2.101, port 55010 [ 5] local 192.168.2.100 port 5201 connected to 192.168.2.101 port 55011 [ 8] local...
  15. U

    Testing limits of home Ethernet wiring

    Should there be this much variation between parallel streams? Accepted connection from 192.168.2.101, port 54738 [ 5] local 192.168.2.100 port 5201 connected to 192.168.2.101 port 54739 [ 8] local 192.168.2.100 port 5201 connected to 192.168.2.101 port 54740 [ 10] local 192.168.2.100 port...
  16. U

    Testing limits of home Ethernet wiring

    Thanks for the pointer to version 3.9 but it did not make a difference to the measurement. Looking at my ntttcp results, it shows packets per interrupt of 0.9. Is that relevant?
  17. U

    Testing limits of home Ethernet wiring

    Windows 10 and iperf3.1.3. And any thoughts about why it is asymmetric? I also learned about NTttcp.exe and am getting about 200-ish MB/s with that I'm going to see if there is such a thing as a USB 3.1 rated USB-C female to USB-A male cable adapter so I can try more computers
  18. U

    Testing limits of home Ethernet wiring

    So I got my pair of USB 2.5G dongles and set about establishing a baseline using a short patch cable and two laptops, A with an i5-8250U 4 core 8 thread CPU and B with a i7-7600U 2 core 4 thread CPU. A is the server and B is the client and both laptops have the same latest Realtek drivers and...
  19. U

    Testing limits of home Ethernet wiring

    Ordered a pair of USB-C 2.5GbE dongles to use with laptops at each end of the cables for testing. Will report back on findings.
  20. U

    Testing limits of home Ethernet wiring

    Understood, first things first!
Top