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passt/test/perf/pasta_udp
David Gibson f94adb121a test/perf: Explicitly control UDP packet length, instead of MTU 
Packet size can make a big difference to UDP throughput, so it makes sense
to measure it for a variety of different sizes.  Currently we do this by
adjusting the MTU on the relevant interface before running iperf3.

However, the UDP packet size has no inherent connection to the MTU - it's
controlled by the sender, and the MTU just affects whether the packet will
make it through or be fragmented.  The only reason adjusting the MTU works
is because iperf3 bases its default packet size on the (path) MTU.

We can test this more simply by using the -l option to the iperf3 client
to directly control the packet size, instead of adjusting the MTU.

As well as simplifying this lets us test different packet sizes for host to
ns traffic.  We couldn't do that previously because we don't have
permission to change the MTU on the host.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-07 09:56:16 +01:00

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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/pasta_udp - Check UDP performance in pasta mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
htools bc head ip sleep iperf3 udp_rr jq sed
nstools ip sleep iperf3 udp_rr jq sed
test pasta: throughput and latency (local traffic)
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' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l
hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
set THREADS 1
set STREAMS 4
set TIME 10
set OPTS -u -P __STREAMS__
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams
report pasta lo_udp 1 __FREQ__
th pktlen 1500B 4000B 16384B 65535B
tr UDP throughput over IPv6: ns to host
iperf3s host 100${i}3 __THREADS__
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
iperf3 BW ns ::1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 1452
bw __BW__ 1.0 1.5
iperf3 BW ns ::1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW ns ::1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 10G -l 16336
bw __BW__ 5.0 6.0
iperf3 BW ns ::1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 15G -l 65487
bw __BW__ 7.0 9.0
iperf3k host
tl UDP RR latency over IPv6: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -6
nsout LAT udp_rr --nolog -P 10003 -C 10013 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv4: ns to host
iperf3s host 100${i}3 __THREADS__
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
iperf3 BW ns 127.0.0.1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 1372
bw __BW__ 1.0 1.5
iperf3 BW ns 127.0.0.1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW ns 127.0.0.1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 10G -l 16356
bw __BW__ 5.0 6.0
iperf3 BW ns 127.0.0.1 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 15G -l 65507
bw __BW__ 7.0 9.0
iperf3k host
tl UDP RR latency over IPv4: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -4
nsout LAT udp_rr --nolog -P 10003 -C 10013 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv6: host to ns
iperf3s ns 100${i}2 __THREADS__
iperf3 BW host ::1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 1452
bw __BW__ 1.0 1.5
iperf3 BW host ::1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW host ::1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 10G -l 16336
bw __BW__ 5.0 6.0
iperf3 BW host ::1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 15G -l 16336
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv6: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -6
hout LAT udp_rr --nolog -P 10002 -C 10012 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
tr UDP throughput over IPv4: host to ns
iperf3s ns 100${i}2 __THREADS__
iperf3 BW host 127.0.0.1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 1372
bw __BW__ 1.0 1.5
iperf3 BW host 127.0.0.1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW host 127.0.0.1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 10G -l 16356
bw __BW__ 5.0 6.0
iperf3 BW host 127.0.0.1 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 15G -l 65507
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv4: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -4
hout LAT udp_rr --nolog -P 10002 -C 10012 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
te
test pasta: throughput and latency (traffic via tap)
nsout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
nsout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams
report pasta tap_udp 1 __FREQ__
th pktlen 1500B 4000B 16384B 65520B
tr UDP throughput over IPv6: ns to host
iperf3s host 100${i}3 __THREADS__
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
iperf3 BW ns __GW6__%__IFNAME__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 2G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW ns __GW6__%__IFNAME__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW ns __GW6__%__IFNAME__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 4G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW ns __GW6__%__IFNAME__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 6G -l 65472
bw __BW__ 6.0 7.0
iperf3k host
tl UDP RR latency over IPv6: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -6
nsout LAT udp_rr --nolog -P 10003 -C 10013 -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv4: ns to host
iperf3s host 100${i}3 __THREADS__
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
iperf3 BW ns __GW__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 2G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW ns __GW__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW ns __GW__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 4G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW ns __GW__ 100${i}3 __THREADS__ __TIME__ __OPTS__ -b 6G -l 65492
bw __BW__ 6.0 7.0
iperf3k host
tl UDP RR latency over IPv4: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -4
nsout LAT udp_rr --nolog -P 10003 -C 10013 -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv6: host to ns
iperf3s ns 100${i}2 __THREADS__
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
nsout ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local'
iperf3 BW host __ADDR6__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 2G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW host __ADDR6__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW host __ADDR6__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 4G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW host __ADDR6__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 15G -l 65472
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv6: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -6
hout LAT udp_rr --nolog -P 10002 -C 10012 -6 -c -H __ADDR6__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
tr UDP throughput over IPv4: host to ns
iperf3s ns 100${i}2 __THREADS__
nsout ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
iperf3 BW host __ADDR__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 2G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW host __ADDR__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 3G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW host __ADDR__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 4G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW host __ADDR__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -b 15G -l 65492
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv4: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -4
hout LAT udp_rr --nolog -P 10002 -C 10012 -4 -c -H __ADDR__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
te
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