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passt/test/perf/passt_udp
David Gibson 5c13b511d9 test: Combine iperf3c and iperf3s into a single DSL command 
These two commands in the DSL to run an iperf client and server are always
used together, and some of the parameters must match between them.  The
iperf3s must also be run more or less immediately after iperf3c, since
iperf3c will run a client in the background after a sleep and requires a
server to be running before it will work.

A bunch of things can be made cleaner if we make a single DSL command that
runs both sides of the test.  For now make the combined command work
exactly like the two commands together did, warts and all.

This does lose the ability for the DSL scripts to give additional options
to the iperf3 server, but we weren't using that anyway.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2022-09-07 11:01:22 +02:00

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# 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 <sbrivio@redhat.com>
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
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