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passt/test/perf/passt_tcp
Stefano Brivio 4d777144fd test: Embed script for dhclient(8) in mbuto(1) profile 
David reports that dhclient-script(8) on Fedora needs a number of
binaries that are not included in PROGS of the current mbuto profile,
and we would also need to include hostnamectl(1) there, which will
fail without a systemd init.

Embed a minimal script for dhclient(8) in the profile itself, written
to /sbin/dhclient-script at boot, to just check what we need to check
out of DHCP and DHCPv6 functionality.

While at it, drop busybox and logger from PROGS, as we don't need them,
and add hostname(1). While DHCP option 12 isn't supported yet by the
DHCP implementation in passt, we should probably add it soon.

Note: owing to the simplicity of this script, we now need to bring up
the interface before starting dhclient: add this in test scripts where
it's not the case yet.

Reported-by: David Gibson <david@gibson.dropbear.id.au>
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

note that we need to bring up the interface before starting dhclient
2022-07-14 01:31:28 +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_tcp - Check TCP performance in passt mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
onlyfor passt_in_ns
gtools sysctl ip jq nproc seq sleep bc iperf3 tcp_rr tcp_crr # From neper
nstools sysctl ip jq nproc seq sleep bc iperf3 tcp_rr tcp_crr
htools bc head sed seq
# 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=536870912
guest /sbin/sysctl -w net.core.wmem_max=536870912
guest /sbin/sysctl -w net.core.rmem_default=33554432
guest /sbin/sysctl -w net.core.wmem_default=33554432
guest /sbin/sysctl -w net.ipv4.tcp_rmem="4096 131072 268435456"
guest /sbin/sysctl -w net.ipv4.tcp_wmem="4096 131072 268435456"
guest /sbin/sysctl -w net.ipv4.tcp_timestamps=0
ns sysctl -w net.ipv4.tcp_rmem="4096 524288 134217728"
ns sysctl -w net.ipv4.tcp_wmem="4096 524288 134217728"
ns sysctl -w net.ipv4.tcp_timestamps=0
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' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l
hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
set THREADS 1
set STREAMS 8
set OPTS -Z -P __STREAMS__ -l 1M -i1 -t30 -O5 --pacing-timer 1000000
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams
report passt tcp __THREADS__ __FREQ__
th MTU 256B 576B 1280B 1500B 9000B 65520B
tr TCP throughput over IPv6: guest to host
bw -
bw -
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 1280
iperf3c guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -w 4M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 1.2 1.5
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 1500
iperf3c guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -w 4M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 1.6 1.8
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 9000
iperf3c guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -w 8M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 4.0 5.0
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 65520
iperf3c guest __GW6__%__IFNAME__ 100${i}2 __THREADS__ __OPTS__ -w 16M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 7.0 8.0
tl TCP RR latency over IPv6: guest to host
lat -
lat -
lat -
lat -
lat -
nsb tcp_rr --nolog -6
gout LAT tcp_rr --nolog -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 200 150
tl TCP CRR latency over IPv6: guest to host
lat -
lat -
lat -
lat -
lat -
nsb tcp_crr --nolog -6
gout LAT tcp_crr --nolog -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 500 400
tr TCP throughput over IPv4: guest to host
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 256
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 1M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 0.2 0.3
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 576
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 1M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 0.5 0.8
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 1280
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 4M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 1.2 1.5
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 1500
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 4M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 1.6 1.8
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 9000
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 8M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 4.0 5.0
virtio_net_workaround
guest ip link set dev __IFNAME__ mtu 65520
iperf3c guest __GW__ 100${i}2 __THREADS__ __OPTS__ -w 16M
iperf3s BW ns 100${i}2 __THREADS__
bw __BW__ 7.0 8.0
tl TCP RR latency over IPv4: guest to host
lat -
lat -
lat -
lat -
lat -
nsb tcp_rr --nolog -4
gout LAT tcp_rr --nolog -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 200 150
tl TCP CRR latency over IPv4: guest to host
lat -
lat -
lat -
lat -
lat -
nsb tcp_crr --nolog -4
gout LAT tcp_crr --nolog -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 500 400
tr TCP throughput over IPv6: host to guest
bw -
bw -
ns ip link set dev lo mtu 1280
iperf3c ns ::1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 1.0 1.2
ns ip link set dev lo mtu 1500
iperf3c ns ::1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 2.0 3.0
ns ip link set dev lo mtu 9000
iperf3c ns ::1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 5.0 6.0
ns ip link set dev lo mtu 65520
iperf3c ns ::1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 6.0 6.8
ns ip link set dev lo mtu 65535
tl TCP RR latency over IPv6: host to guest
lat -
lat -
lat -
lat -
lat -
guestb tcp_rr --nolog -P 10001 -C 10011 -6
nsout LAT tcp_rr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 200 150
tl TCP CRR latency over IPv6: host to guest
lat -
lat -
lat -
lat -
lat -
guestb tcp_crr --nolog -P 10001 -C 10011 -6
nsout LAT tcp_crr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 500 350
tr TCP throughput over IPv4: host to guest
ns ip link set dev lo mtu 256
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 0.3 0.5
ns ip link set dev lo mtu 576
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 0.5 1.0
ns ip link set dev lo mtu 1280
ns ip addr add ::1 dev lo
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 2.0 3.0
ns ip link set dev lo mtu 1500
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 2.0 3.0
ns ip link set dev lo mtu 9000
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 5.0 6.0
ns ip link set dev lo mtu 65520
iperf3c ns 127.0.0.1 100${i}1 __THREADS__ __OPTS__
iperf3s BW guest 100${i}1 __THREADS__
bw __BW__ 6.0 6.8
ns ip link set dev lo mtu 65535
tl TCP RR latency over IPv4: host to guest
lat -
lat -
lat -
lat -
lat -
guestb tcp_rr --nolog -P 10001 -C 10011 -4
nsout LAT tcp_rr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 200 150
tl TCP CRR latency over IPv6: host to guest
lat -
lat -
lat -
lat -
lat -
guestb tcp_crr --nolog -P 10001 -C 10011 -4
nsout LAT tcp_crr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 500 300
te
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