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POImprove Ethernet throughput for jumbo frames
 

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    <p>We are running throughput test on the gigE of Macnica Helio board with 1GB DDR3 specification.We are now achieving 60% (Jumbo frame) throughput, however we expect higher throughput in our application.</p> <p>Method of calculation as following:-</p> <pre><code> (100M / time taken * 8-bit /1Gbps)*100% </code></pre> <p>What we did: -Transfer 100MB using server and client code</p> <p>Server(Cyclone V) -change eth0 MTU 7500 (only achieve if we turn off tx checksum using ethtool "ethtool -K eth0 tx off" else we are just able to change the MTU up to 3500 only) then execute the server code</p> <p>Client (Laptop runs UBUNTU) -change eth0 MTU to 9000 then execute the client code and test the throughput performance using wireshark</p> <p>We do try to change ipv4 setting using command below but throughput result is still the same</p> <pre><code> -sysctl -w net.core.rmem_max=18388608 -sysctl -w net.core.wmem_max=18388608 -sysctl -w net.core.rmem_default=1065536 -sysctl -w net.core.wmem_default=1065536 -sysctl -w net.ipv4.tcp_rmem=4096 87380 18388608 -sysctl -w net.ipv4.tcp_wmem=4096 87380 18388608 -sysctl -w net.ipv4.tcp_mem=18388608 18388608 18388608 -sysctl -w net.ipv4.route.flush=1 -sysctl -w net.ipv4.tcp_mtu_probing=1 </code></pre> <p>Question</p> <p>is there any method or solution to achieve higher throughput? </p> <p>Is there any effect if we turn off the tx checksum?</p> <p>What is the the different of tcp_congestion_control between cubic and bic and will it effect throughput performance?</p>
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