Posted April 11, 2021 Extremely long story short, windows 10 seems to be bottlenecking my Aquantia aqc107 Nic built into my motherboard. When running iperf3 between it and my Nas (truenas 12.0) which also has a 10gbe NIC (intel X520-sr1) I top out at 6.5Gbps. However if I boot ubuntu and run iperf3 from there, I get just over 9Gbps. I've fiddled with all the settings in the configure menu (including setting jumbo frames to 9014 bytes) which got me to the 6.5Gbps (was 3.5-4Gbps with default settings), but just cant figure out what windows is doing with the other ~3Gbps. https://www.passmark.com/baselines/V10/display.php?id=137367308745 Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/ Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 11, 2021 What CPU are you using? Windows only natively supports single-threaded file transfer Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14638994 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 11, 2021 Author Full specs on my profile, ryzen 5800x with 32gb of 3600 ram, shouldn't be any issues there. Especially considering using my fx-6300 test bench (also on windows 10) with a different 10gbe NIC I was able to get over 9Gbps https://www.passmark.com/baselines/V10/display.php?id=137367308745 Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14639003 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 11, 2021 Does the speed go up with parallel streams in iperf, or the -p witch? Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14639017 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 11, 2021 Author 3 minutes ago, Electronics Wizardy said: Does the speed go up with parallel streams in iperf, or the -p witch? Actually yes, 4 threads gets me to 9.5Gbps, not sure what that means though https://www.passmark.com/baselines/V10/display.php?id=137367308745 Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14639024 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 12, 2021 20 minutes ago, Straxxus said: Actually yes, 4 threads gets me to 9.5Gbps, not sure what that means though That means it can copy at 10g just fine, just not over one stream. Shouldn't be a big issue as smb3 multi channel supports multiple streams for file copies. Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14639073 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 12, 2021 Author 14 minutes ago, Electronics Wizardy said: That means it can copy at 10g just fine, just not over one stream. Shouldn't be a big issue as smb3 multi channel supports multiple streams for file copies. cool, I got down this rabbit hole trying to troubleshoot file copy performance issues from my NAS, so at least I've ruled out the connection now https://www.passmark.com/baselines/V10/display.php?id=137367308745 Link to comment https://linustechtips.com/topic/1325483-windows-10-bottlenecking-10gbe/#findComment-14639131 Share on other sites More sharing options... Link to post Share on other sites More sharing options...
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