# SPDX-License-Identifier: AGPL-3.0-or-later # # PASST - Plug A Simple Socket Transport # for qemu/UNIX domain socket mode # # PASTA - Pack A Subtle Tap Abstraction # for network namespace/tap device mode # # test/perf/passt_udp - Check UDP performance in passt mode # # Copyright (c) 2021 Red Hat GmbH # Author: Stefano Brivio gtools sysctl ip jq nproc sleep iperf3 udp_rr # From neper nstools ip jq sleep iperf3 udp_rr htools bc head sed # In this setup, virtio_net TX queue sometimes hangs, still under investigation def virtio_net_workaround guest modprobe -r virtio_net; modprobe virtio_net napi_tx=1; ip link set dev eth0 up; dhclient -4; dhclient -6; sleep 3 endef test passt: throughput and latency guest /sbin/sysctl -w net.core.rmem_max=16777216 guest /sbin/sysctl -w net.core.wmem_max=16777216 guest /sbin/sysctl -w net.core.rmem_default=16777216 guest /sbin/sysctl -w net.core.wmem_default=16777216 gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway' gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway' gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname' hout FREQ_PROCFS (echo "scale=1"; sed -n 's/cpu MHz.*: \([0-9]*\)\..*$/(\1+10^2\/2)\/10^3/p' /proc/cpuinfo) | bc -l | head -n1 hout FREQ_CPUFREQ (echo "scale=1"; printf '( %i + 10^5 / 2 ) / 10^6\n' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__ set THREADS 4 set STREAMS 1 set OPTS -u -i1 -t30 -P __STREAMS__ --pacing-timer 1000 info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz, one stream each report passt udp __THREADS__ __FREQ__ th MTU 256B 576B 1280B 1500B 9000B 65520B tr UDP throughput over IPv6: guest to host bw - bw - virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1280 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -b 2G bw __BW__ 0.8 1.2 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1500 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -b 3G bw __BW__ 1.0 1.5 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 9000 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -b 5G bw __BW__ 4.0 5.0 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 65520 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -b 7G bw __BW__ 4.0 5.0 tl UDP RR latency over IPv6: guest to host lat - lat - lat - lat - lat - nsb udp_rr --nolog -6 gout LAT udp_rr --nolog -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tr UDP throughput over IPv4: guest to host virtio_net_workaround guest ip link set dev __IFNAME__ mtu 256 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 500M bw __BW__ 0.0 0.0 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 576 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 1G bw __BW__ 0.4 0.6 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1280 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 2G bw __BW__ 0.8 1.2 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1500 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 3G bw __BW__ 1.0 1.5 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 9000 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 6G bw __BW__ 4.0 5.0 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 65520 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __OPTS__ -b 7G bw __BW__ 4.0 5.0 tl UDP RR latency over IPv4: guest to host lat - lat - lat - lat - lat - nsb udp_rr --nolog -4 gout LAT udp_rr --nolog -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tr UDP throughput over IPv6: host to guest bw - bw - ns ip link set dev lo mtu 1280 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __OPTS__ -b 2G bw __BW__ 0.8 1.2 ns ip link set dev lo mtu 1500 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __OPTS__ -b 2G bw __BW__ 1.0 1.5 ns ip link set dev lo mtu 9000 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 3.0 4.0 ns ip link set dev lo mtu 65520 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 3.0 4.0 tl UDP RR latency over IPv6: host to guest lat - lat - lat - lat - lat - guestb udp_rr --nolog -P 10001 -C 10011 -6 nsout LAT udp_rr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 ns ip link set dev lo mtu 65535 tr UDP throughput over IPv4: host to guest ns ip link set dev lo mtu 256 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 1G bw __BW__ 0.0 0.0 ns ip link set dev lo mtu 576 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 1G bw __BW__ 0.4 0.6 ns ip link set dev lo mtu 1280 ns ip addr add ::1 dev lo iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 0.8 1.2 ns ip link set dev lo mtu 1500 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 1.0 1.5 ns ip link set dev lo mtu 9000 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 3.0 4.0 ns ip link set dev lo mtu 65520 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __OPTS__ -b 3G bw __BW__ 3.0 4.0 tl UDP RR latency over IPv4: host to guest lat - lat - lat - lat - lat - guestb udp_rr --nolog -P 10001 -C 10011 -4 nsout LAT udp_rr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 ns ip link set dev lo mtu 65535 te