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passt: Relicense to GPL 2.0, or any later version In practical terms, passt doesn't benefit from the additional protection offered by the AGPL over the GPL, because it's not suitable to be executed over a computer network. Further, restricting the distribution under the version 3 of the GPL wouldn't provide any practical advantage either, as long as the passt codebase is concerned, and might cause unnecessary compatibility dilemmas. Change licensing terms to the GNU General Public License Version 2, or any later version, with written permission from all current and past contributors, namely: myself, David Gibson, Laine Stump, Andrea Bolognani, Paul Holzinger, Richard W.M. Jones, Chris Kuhn, Florian Weimer, Giuseppe Scrivano, Stefan Hajnoczi, and Vasiliy Ulyanov. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-04-05 18:11:44 +00:00
# SPDX-License-Identifier: GPL-2.0-or-later
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
#
# 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>
test/perf: Check for /sbin/sysctl with which(1), not simply sysctl Otherwise, we're depending on having /sbin in $PATH. For some reason I didn't completely grasp, with the new command dispatch mechanism that's not the case anymore, even if I have /sbin in $PATH in the parent shell. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
2022-09-16 23:17:04 +00:00
gtools /sbin/sysctl ip jq nproc sleep iperf3 udp_rr # From neper
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
nstools ip jq sleep iperf3 udp_rr
test/perf: Use CPU frequency from /proc/cpuinfo instead of cpupower(1) Get it to work also in nested virtualisation environments. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-10-19 07:25:29 +00:00
htools bc head sed
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
set MAP_NS4 192.0.2.2
set MAP_NS6 2001:db8:9a55::2
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
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
test/perf: Try sourcing maximum scaling frequency from cpufreq On most recent CPUs, that's a better indication of all-core turbo frequency, or non-turbo frequency, than /proc/cpuinfo. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-10-20 23:24:22 +00:00
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__
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
set THREADS 2
test: Speed up by cutting on eye candy and performance test duration We have a number of delays when we switch to new layouts that were added to make the tests visually easier to follow, together with blinking status bars. Shorten the delays and avoid blinking the status bar if $FAST is set to 1 (no demo mode). Shorten delays in busy loops to 10ms, instead of 100ms, and skip the one-second fixed delay when we wait for the status of a command. Cut the duration of throughput and latency tests to one second, down from ten. Somewhat surprisingly, the results we get are rather consistent, and not significantly different from what we'd get with 10 seconds. This, together with Podman's commit 20f3e8909e3a ("test/system: pasta_test_do add explicit port check"), cuts the time needed on my setup for full test run from approximately 37 minutes to...: $ time ./run [exited] PASS: 165, FAIL: 0 Log at /home/sbrivio/passt/test/test_logs/test.log real 15m34.253s user 0m0.011s sys 0m0.011s Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-08-14 17:25:38 +00:00
set TIME 1
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
set OPTS -u -P __THREADS__ --pacing-timer 1000
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
report passt udp __THREADS__ __FREQ__
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>
2023-11-06 07:08:30 +00:00
th pktlen 256B 576B 1280B 1500B 9000B 65520B
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
tr UDP throughput over IPv6: guest to host
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3s ns 10002
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>
2023-11-06 07:08:30 +00:00
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw -
bw -
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 3G -l 1232
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.8 1.2
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 4G -l 1452
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 1.0 1.5
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 8G -l 8952
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 4.0 5.0
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 15G -l 64372
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 4.0 5.0
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
iperf3k ns
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
tl UDP RR latency over IPv6: guest to host
lat -
lat -
lat -
lat -
lat -
nsb udp_rr --nolog -6
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
gout LAT udp_rr --nolog -6 -c -H __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p'
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
lat __LAT__ 200 150
tr UDP throughput over IPv4: guest to host
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3s ns 10002
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>
2023-11-06 07:08:30 +00:00
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 1G -l 228
test/perf/passt_udp: Drop threshold for 256B test That test fails sometimes, it looks like iperf3 is still sending initial messages that are too big. I'll need to figure out why, but given that 256 bytes is not really an expected MTU, drop the thresholds to zero for the moment being. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-02-21 04:19:39 +00:00
bw __BW__ 0.0 0.0
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 2G -l 548
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.4 0.6
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 3G -l 1252
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.8 1.2
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 4G -l 1472
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 1.0 1.5
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 8G -l 8972
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 4.0 5.0
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 15G -l 65492
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 4.0 5.0
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
iperf3k ns
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
tl UDP RR latency over IPv4: guest to host
lat -
lat -
lat -
lat -
lat -
nsb udp_rr --nolog -4
conf: Allow address remapped to host to be configured 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>
2024-08-21 04:20:17 +00:00
gout LAT udp_rr --nolog -4 -c -H __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p'
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
lat __LAT__ 200 150
tr UDP throughput over IPv6: host to guest
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3s guest 10001
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>
2023-11-06 07:08:30 +00:00
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw -
bw -
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 3G -l 1232
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.8 1.2
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 4G -l 1452
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 1.0 1.5
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 8G -l 8952
perf/passt_udp: Lower failure throughput thresholds with big MTUs The throughput results in this test look quite variable, slightly lower figures look reasonable anyway. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-01-26 06:30:05 +00:00
bw __BW__ 3.0 4.0
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns ::1 10001 __TIME__ __OPTS__ -b 15G -l 64372
perf/passt_udp: Lower failure throughput thresholds with big MTUs The throughput results in this test look quite variable, slightly lower figures look reasonable anyway. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-01-26 06:30:05 +00:00
bw __BW__ 3.0 4.0
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
iperf3k guest
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
tl UDP RR latency over IPv6: host to guest
lat -
lat -
lat -
lat -
lat -
guestb udp_rr --nolog -P 10001 -C 10011 -6
test/perf: Wait for neper servers in guest to be ready before starting client Starting tcp_rr, tcp_crr, udp_rr servers in the guest takes a bit longer than starting the corresponding clients on the host, and we end up starting clients before servers unless we add a delay there. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-09-22 14:40:28 +00:00
sleep 1
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
nsout LAT udp_rr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
lat __LAT__ 200 150
tr UDP throughput over IPv4: host to guest
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3s guest 10001
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>
2023-11-06 07:08:30 +00:00
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 1G -l 228
test/perf/passt_udp: Drop threshold for 256B test That test fails sometimes, it looks like iperf3 is still sending initial messages that are too big. I'll need to figure out why, but given that 256 bytes is not really an expected MTU, drop the thresholds to zero for the moment being. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-02-21 04:19:39 +00:00
bw __BW__ 0.0 0.0
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 2G -l 548
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.4 0.6
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 3G -l 1252
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 0.8 1.2
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 4G -l 1472
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
bw __BW__ 1.0 1.5
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 8G -l 8972
perf/passt_udp: Lower failure throughput thresholds with big MTUs The throughput results in this test look quite variable, slightly lower figures look reasonable anyway. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-01-26 06:30:05 +00:00
bw __BW__ 3.0 4.0
test: iperf3 3.16 introduces multiple threads, drop our own implementation of that Starting from iperf3 version 3.16, -P / --parallel spawns multiple clients as separate threads, instead of multiple streams serviced by the same thread. So we can drop our lib/test implementation to spawn several iperf3 client and server processes and finally simplify things quite a bit. Adjust number of threads and UDP sending bandwidth to values that seem to be more or less matching previous throughput tests on my setup. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Tested-by: David Gibson <david@gibson.dropbear.id.au>
2024-07-24 20:40:32 +00:00
iperf3 BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 15G -l 65492
perf/passt_udp: Lower failure throughput thresholds with big MTUs The throughput results in this test look quite variable, slightly lower figures look reasonable anyway. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-01-26 06:30:05 +00:00
bw __BW__ 3.0 4.0
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
test/perf: Start iperf3 server less often Currently we start both the iperf3 server(s) and client(s) afresh each time we want to make a bandwidth measurement. That's not really necessary as usually a whole batch of bandwidth measurements can use the same server. Split up the iperf3 directive into 3 directives: iperf3s to start the server, iperf3 to make a measurement and iperf3k to kill the server, so that we can start the server less often. This - and more importantly, the reduced number of waits for the server to be ready - reduces runtime of the performance tests on my laptop by about 4m (out of ~28minutes). For now we still restart the server between IPv4 and IPv6 tests. That's because in some cases the latency measurements we make in between use the same ports. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2023-11-06 07:08:28 +00:00
iperf3k guest
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
tl UDP RR latency over IPv4: host to guest
lat -
lat -
lat -
lat -
lat -
guestb udp_rr --nolog -P 10001 -C 10011 -4
test/perf: Wait for neper servers in guest to be ready before starting client Starting tcp_rr, tcp_crr, udp_rr servers in the guest takes a bit longer than starting the corresponding clients on the host, and we end up starting clients before servers unless we add a delay there. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-09-22 14:40:28 +00:00
sleep 1
test: Add CI/demo scripts Not really quick, definitely dirty. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 13:10:35 +00:00
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
te
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