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e813a4df7d
Because the host and guest share the same IP address with passt/pasta, it's not possible for the guest to directly address the host. Therefore we allow packets from the guest going to a special "NAT to host" address to be redirected to the host, appearing there as though they have both source and destination address of loopback. Currently that special address is always the address of the default gateway (or none). That can be a problem if we want that gateway to be addressable by the guest. Therefore, allow the special "NAT to host" address to be overridden on the command line with a new --map-host-loopback option. In order to exercise and test it, update the passt_in_ns and perf tests to use this option and give different mapping addresses for the two layers of the environment. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
160 lines
4.4 KiB
Plaintext
160 lines
4.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# PASST - Plug A Simple Socket Transport
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# for qemu/UNIX domain socket mode
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#
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# PASTA - Pack A Subtle Tap Abstraction
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# for network namespace/tap device mode
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#
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# test/perf/passt_udp - Check UDP performance in passt mode
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#
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# Copyright (c) 2021 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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gtools /sbin/sysctl ip jq nproc sleep iperf3 udp_rr # From neper
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nstools ip jq sleep iperf3 udp_rr
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htools bc head sed
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set MAP_NS4 192.0.2.2
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set MAP_NS6 2001:db8:9a55::2
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test passt: throughput and latency
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guest /sbin/sysctl -w net.core.rmem_max=16777216
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guest /sbin/sysctl -w net.core.wmem_max=16777216
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guest /sbin/sysctl -w net.core.rmem_default=16777216
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guest /sbin/sysctl -w net.core.wmem_default=16777216
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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
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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
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hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
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set THREADS 2
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set TIME 1
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set OPTS -u -P __THREADS__ --pacing-timer 1000
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info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
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report passt udp __THREADS__ __FREQ__
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th pktlen 256B 576B 1280B 1500B 9000B 65520B
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tr UDP throughput over IPv6: guest to host
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iperf3s ns 10002
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# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
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bw -
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bw -
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iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 3G -l 1232
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bw __BW__ 0.8 1.2
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iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 4G -l 1452
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bw __BW__ 1.0 1.5
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iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 8G -l 8952
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bw __BW__ 4.0 5.0
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iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 15G -l 64372
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bw __BW__ 4.0 5.0
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iperf3k ns
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tl UDP RR latency over IPv6: guest to host
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lat -
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lat -
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lat -
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lat -
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lat -
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nsb udp_rr --nolog -6
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gout LAT udp_rr --nolog -6 -c -H __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 200 150
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tr UDP throughput over IPv4: guest to host
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iperf3s ns 10002
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# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 1G -l 228
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bw __BW__ 0.0 0.0
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 2G -l 548
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bw __BW__ 0.4 0.6
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 3G -l 1252
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bw __BW__ 0.8 1.2
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 4G -l 1472
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bw __BW__ 1.0 1.5
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 8G -l 8972
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bw __BW__ 4.0 5.0
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iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 15G -l 65492
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bw __BW__ 4.0 5.0
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iperf3k ns
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tl UDP RR latency over IPv4: guest to host
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lat -
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lat -
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lat -
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lat -
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lat -
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nsb udp_rr --nolog -4
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gout LAT udp_rr --nolog -4 -c -H __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 200 150
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tr UDP throughput over IPv6: host to guest
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iperf3s guest 10001
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# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
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bw -
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bw -
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iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 3G -l 1232
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bw __BW__ 0.8 1.2
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iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 4G -l 1452
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bw __BW__ 1.0 1.5
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iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 8G -l 8952
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bw __BW__ 3.0 4.0
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iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 15G -l 64372
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bw __BW__ 3.0 4.0
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iperf3k guest
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tl UDP RR latency over IPv6: host to guest
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lat -
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lat -
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lat -
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lat -
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lat -
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guestb udp_rr --nolog -P 10001 -C 10011 -6
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sleep 1
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nsout LAT udp_rr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 200 150
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tr UDP throughput over IPv4: host to guest
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iperf3s guest 10001
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# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 1G -l 228
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bw __BW__ 0.0 0.0
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 2G -l 548
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bw __BW__ 0.4 0.6
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 3G -l 1252
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bw __BW__ 0.8 1.2
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 4G -l 1472
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bw __BW__ 1.0 1.5
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 8G -l 8972
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bw __BW__ 3.0 4.0
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iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 15G -l 65492
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bw __BW__ 3.0 4.0
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iperf3k guest
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tl UDP RR latency over IPv4: host to guest
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lat -
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lat -
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lat -
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lat -
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lat -
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guestb udp_rr --nolog -P 10001 -C 10011 -4
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sleep 1
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nsout LAT udp_rr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 200 150
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te
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