Achieving Top Network Performance - Red Hat Summit

Tuning – sanity check●Sometimes mistuning can show that it is working# ./netperf -l 30 -H 172.17.200.82 -T 12,2 -t TCP_SENDFILETCP SENDFILE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to172.17.200.82 (172.17.200.82) port 0 AF_INET : spin interval : demo :cpu bindRecv Send SendSocket Socket Message ElapsedSize Size Size Time Throughputbytes bytes bytes secs. 10^6bits/sec87380 16384 16384 30.00 13033.89●37 Gb -> 13 Gb due to crossing NUMA boundary● OUCH !