Here are my results on qemu-kvm.git: ioeventfd=on TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.2 (192.168.0.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec
87380 16384 200 10.00 1203.44 ioeventfd=off TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.2 (192.168.0.2) port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 200 10.00 1677.96 This is a 30% degradation that wasn't visible on qemu.git. Same host. qemu-kvm.git with v5 patches based on cb1983b8809d0e06a97384a40bad1194a32fc814. Stefan
