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# SPDX-License-Identifier: GPL-2.0-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 <sbrivio@redhat.com>
gtools /sbin/sysctl ip jq nproc sleep iperf3 udp_rr # From neper
nstools ip jq sleep iperf3 udp_rr
htools bc head sed
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' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l
hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
set THREADS 4
set STREAMS 1
set TIME 10
set OPTS -u -P __STREAMS__ --pacing-timer 1000
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz, one stream each
report passt udp __THREADS__ __FREQ__
th MTU 256B 576B 1280B 1500B 9000B 65520B
tr UDP throughput over IPv6: guest to host
iperf3s ns 100${i}2 __THREADS__
bw -
bw -
guest ip link set dev __IFNAME__ mtu 1280
iperf3 BW guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 2G
bw __BW__ 0.8 1.2
guest ip link set dev __IFNAME__ mtu 1500
iperf3 BW guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 1.0 1.5
guest ip link set dev __IFNAME__ mtu 9000
iperf3 BW guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 5G
bw __BW__ 4.0 5.0
guest ip link set dev __IFNAME__ mtu 65520
iperf3 BW guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 7G
bw __BW__ 4.0 5.0
iperf3k ns
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
iperf3s ns 100${i}2 __THREADS__
guest ip link set dev __IFNAME__ mtu 256
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 500M
bw __BW__ 0.0 0.0
guest ip link set dev __IFNAME__ mtu 576
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 1G
bw __BW__ 0.4 0.6
guest ip link set dev __IFNAME__ mtu 1280
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 2G
bw __BW__ 0.8 1.2
guest ip link set dev __IFNAME__ mtu 1500
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 1.0 1.5
guest ip link set dev __IFNAME__ mtu 9000
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 6G
bw __BW__ 4.0 5.0
guest ip link set dev __IFNAME__ mtu 65520
iperf3 BW guest __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 7G
bw __BW__ 4.0 5.0
iperf3k ns
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
iperf3s guest 100${i}1 __THREADS__
bw -
bw -
ns ip link set dev lo mtu 1280
iperf3 BW ns ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 2G
bw __BW__ 0.8 1.2
ns ip link set dev lo mtu 1500
iperf3 BW ns ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 2G
bw __BW__ 1.0 1.5
ns ip link set dev lo mtu 9000
iperf3 BW ns ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 3.0 4.0
ns ip link set dev lo mtu 65520
iperf3 BW ns ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 3.0 4.0
iperf3k guest
tl UDP RR latency over IPv6: host to guest
lat -
lat -
lat -
lat -
lat -
guestb udp_rr --nolog -P 10001 -C 10011 -6
sleep 1
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
iperf3s guest 100${i}1 __THREADS__
ns ip link set dev lo mtu 256
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 1G
bw __BW__ 0.0 0.0
ns ip link set dev lo mtu 576
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 1G
bw __BW__ 0.4 0.6
ns ip link set dev lo mtu 1280
ns ip addr add ::1 dev lo
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 0.8 1.2
ns ip link set dev lo mtu 1500
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 1.0 1.5
ns ip link set dev lo mtu 9000
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 3.0 4.0
ns ip link set dev lo mtu 65520
iperf3 BW ns 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ -b 3G
bw __BW__ 3.0 4.0
iperf3k guest
tl UDP RR latency over IPv4: host to guest
lat -
lat -
lat -
lat -
lat -
guestb udp_rr --nolog -P 10001 -C 10011 -4
sleep 1
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
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