On 27.12.2015 19:23, Carlos Ferreira wrote: > I'm using Arch Linux in a SuperMicro A1SAi-2750F motherboard and I'm having > performance issues while bridging 3 Ethernet Gigabit network interfaces. > The 4th network interface of that motherboard, is used to connect to the > ISP. > [..] > I conducted a small iperf3 test. The scenario was: > PC A (100Mbps) <---> Server Ether 1(1Gbps) <---> Linux Bridge (br0) <---> > Server Ether 2 (1Gbps) <---> PC B (1Gbps) Are these values from a tool like ethtool or are they just what you think they should be? I've sometimes had bad cables/connectors cause speeds to be limited to 100Mbit instead of gbit. As for software problems you'd need to provide/look at some more details like cpu load, interrupts, top, htop, dstat -lpma, mpstat -I ALL, dmesg. That cpu should be able to easily handle gbit speed though and a bridge in linux should be able to far exceed your network speeds. Hope that helps, Florian
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