Re: [PATCH v3 0/4] Add vhost-user support to passt. (part 3)

[Stefano Brivio <sbrivio@redhat.com>]

[-- Attachment #1: Type: text/plain, Size: 1208 bytes --]

On Wed, 21 Aug 2024 00:41:14 +0200
Stefano Brivio <sbrivio@redhat.com> wrote:

> On Thu, 15 Aug 2024 17:50:19 +0200
> Laurent Vivier <lvivier@redhat.com> wrote:
> 
> > This series of patches adds vhost-user support to passt
> > and then allows passt to connect to QEMU network backend using
> > virtqueue rather than a socket.
> > 
> > With QEMU, rather than using to connect:
> > 
> >   -netdev stream,id=s,server=off,addr.type=unix,addr.path=/tmp/passt_1.socket
> > 
> > we will use:
> > 
> >   -chardev socket,id=chr0,path=/tmp/passt_1.socket
> >   -netdev vhost-user,id=netdev0,chardev=chr0
> >   -device virtio-net,netdev=netdev0
> >   -object memory-backend-memfd,id=memfd0,share=on,size=$RAMSIZE
> >   -numa node,memdev=memfd0
> > 
> > The memory backend is needed to share data between passt and QEMU.
> > 
> > Performance comparison between "-netdev stream" and "-netdev vhost-user":  
> 
> By the way, I attached a quick patch adding vhost-user-based tests to
> the usual throughput and latency tests.
> 
> UDP doesn't work (I didn't look into that at all), TCP does.

Complete/fixed patch attached. The only part of UDP that's not working
is actually over IPv6 -- it works over IPv4.

-- 
Stefano

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: 0001-test-Add-vhost-user-performance-tests-for-TCP-and-UD.patch --]
[-- Type: text/x-patch, Size: 17110 bytes --]

From 1ea5bf7942d1fdbea37d9d2cf3ce3c2c335360cf Mon Sep 17 00:00:00 2001
From: Stefano Brivio <sbrivio@redhat.com>
Date: Thu, 22 Aug 2024 18:50:43 +0200
Subject: [PATCH] test: Add vhost-user performance tests for TCP and UDP

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 test/lib/perf_report  |  15 +++
 test/lib/setup        |  49 +++++++---
 test/perf/passtvu_tcp | 211 ++++++++++++++++++++++++++++++++++++++++++
 test/perf/passtvu_udp | 159 +++++++++++++++++++++++++++++++
 test/run              |  10 ++
 5 files changed, 431 insertions(+), 13 deletions(-)
 create mode 100644 test/perf/passtvu_tcp
 create mode 100644 test/perf/passtvu_udp

diff --git a/test/lib/perf_report b/test/lib/perf_report
index d1ef50b..dfab32e 100755
--- a/test/lib/perf_report
+++ b/test/lib/perf_report
@@ -49,6 +49,21 @@ td:empty { visibility: hidden; }
 	__passt_tcp_LINE__ __passt_udp_LINE__
 </table>
 
+</li><li><p>passt with vhost-user back-end</p>
+<table class="passt" width="70%">
+	<tr>
+		<th/>
+		<th id="perf_passtvu_tcp" colspan="__passtvu_tcp_cols__">TCP, __passtvu_tcp_threads__ at __passtvu_tcp_freq__ GHz</th>
+		<th id="perf_passtvu_udp" colspan="__passtvu_udp_cols__">UDP, __passtvu_udp_threads__ at __passtvu_udp_freq__ GHz</th>
+	</tr>
+	<tr>
+		<td align="right">MTU:</td>
+		__passtvu_tcp_header__
+		__passtvu_udp_header__
+	</tr>
+	__passtvu_tcp_LINE__ __passtvu_udp_LINE__
+</table>
+
 <style type="text/CSS">
 table.pasta_local td { border: 0px solid; padding: 6px; line-height: 1; }
 table.pasta_local td { text-align: right; }
diff --git a/test/lib/setup b/test/lib/setup
index d764138..31e24d5 100755
--- a/test/lib/setup
+++ b/test/lib/setup
@@ -17,6 +17,7 @@ INITRAMFS="${BASEPATH}/mbuto.img"
 VCPUS="$( [ $(nproc) -ge 8 ] && echo 6 || echo $(( $(nproc) / 2 + 1 )) )"
 __mem_kib="$(sed -n 's/MemTotal:[ ]*\([0-9]*\) kB/\1/p' /proc/meminfo)"
 VMEM="$((${__mem_kib} / 1024 / 4))"
+VMEM_ROUND="$(((${VMEM} + 512) / 1024))G"
 QEMU_ARCH="$(uname -m)"
 [ "${QEMU_ARCH}" = "i686" ] && QEMU_ARCH=i386
 
@@ -150,23 +151,45 @@ setup_passt_in_ns() {
 	else
 		context_run passt "make clean"
 		context_run passt "make"
-		context_run_bg passt "./passt -f ${__opts} -s ${STATESETUP}/passt.socket -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid --map-host-loopback ${__map_ns4} --map-host-loopback ${__map_ns6}"
+		if [ ${VHOST_USER} -eq 1 ]; then
+			context_run_bg passt "./passt -f ${__opts} --vhost-user -s ${STATESETUP}/passt.socket -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid --map-host-loopback ${__map_ns4} --map-host-loopback ${__map_ns6}"
+		else
+			context_run_bg passt "./passt -f ${__opts} -s ${STATESETUP}/passt.socket -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid --map-host-loopback ${__map_ns4} --map-host-loopback ${__map_ns6}"
+		fi
 	fi
 	wait_for [ -f "${STATESETUP}/passt.pid" ]
 
 	GUEST_CID=94557
-	context_run_bg qemu 'qemu-system-'"${QEMU_ARCH}"		   \
-		' -machine accel=kvm'                                      \
-		' -M accel=kvm:tcg'                                        \
-		' -m '${VMEM}' -cpu host -smp '${VCPUS}                    \
-		' -kernel ' "/boot/vmlinuz-$(uname -r)"			   \
-		' -initrd '${INITRAMFS}' -nographic -serial stdio'	   \
-		' -nodefaults'						   \
-		' -append "console=ttyS0 mitigations=off apparmor=0" '	   \
-		' -device virtio-net-pci,netdev=s0 '			   \
-		" -netdev stream,id=s0,server=off,addr.type=unix,addr.path=${STATESETUP}/passt.socket " \
-		" -pidfile ${STATESETUP}/qemu.pid"			   \
-		" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
+	if [ ${VHOST_USER} -eq 1 ]; then
+		context_run_bg qemu 'qemu-system-$(uname -m)'			   \
+			' -machine accel=kvm'                                      \
+			' -M accel=kvm:tcg'                                        \
+			' -m '${VMEM_ROUND}' -cpu host -smp '${VCPUS}		   \
+			' -kernel ' "/boot/vmlinuz-$(uname -r)"			   \
+			' -initrd '${INITRAMFS}' -nographic -serial stdio'	   \
+			' -nodefaults'						   \
+			' -append "console=ttyS0 mitigations=off apparmor=0" '	   \
+			" -chardev socket,id=chr0,path=${STATESETUP}/passt.socket" \
+			' -netdev vhost-user,id=netdev0,chardev=chr0'		   \
+			' -device virtio-net,netdev=netdev0'			   \
+			" -object memory-backend-memfd,id=memfd0,share=on,size=${VMEM_ROUND}" \
+			' -numa node,memdev=memfd0'				   \
+			" -pidfile ${STATESETUP}/qemu.pid"			   \
+			" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
+	else
+		context_run_bg qemu 'qemu-system-$(uname -m)'			   \
+			' -machine accel=kvm'                                      \
+			' -M accel=kvm:tcg'                                        \
+			' -m '${VMEM}' -cpu host -smp '${VCPUS}                    \
+			' -kernel ' "/boot/vmlinuz-$(uname -r)"			   \
+			' -initrd '${INITRAMFS}' -nographic -serial stdio'	   \
+			' -nodefaults'						   \
+			' -append "console=ttyS0 mitigations=off apparmor=0" '	   \
+			' -device virtio-net-pci,netdev=s0 '			   \
+			" -netdev stream,id=s0,server=off,addr.type=unix,addr.path=${STATESETUP}/passt.socket " \
+			" -pidfile ${STATESETUP}/qemu.pid"			   \
+			" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
+	fi
 
 	context_setup_guest guest $GUEST_CID
 }
diff --git a/test/perf/passtvu_tcp b/test/perf/passtvu_tcp
new file mode 100644
index 0000000..a30af7b
--- /dev/null
+++ b/test/perf/passtvu_tcp
@@ -0,0 +1,211 @@
+# 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/passtvu_tcp - Check TCP performance in passt vhost-user mode
+#
+# Copyright (c) 2021 Red Hat GmbH
+# Author: Stefano Brivio <sbrivio@redhat.com>
+
+gtools	/sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr # From neper
+nstools	/sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr
+htools	bc head sed seq
+
+set	MAP_NS4 192.0.2.2
+set	MAP_NS6 2001:db8:9a55::2
+
+test	passt with vhost-user: 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	/sbin/sysctl -w net.ipv4.tcp_rmem="4096 524288 134217728"
+ns	/sbin/sysctl -w net.ipv4.tcp_wmem="4096 524288 134217728"
+ns	/sbin/sysctl -w net.ipv4.tcp_timestamps=0
+
+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 2
+set	TIME 2
+set	OMIT 0.1
+set	OPTS -Z -N -P __THREADS__ -l 60k -O__OMIT__
+
+info	Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
+report	passtvu tcp __THREADS__ __FREQ__
+
+th	MTU 256B 576B 1280B 1500B 9000B 65520B
+
+
+tr	TCP throughput over IPv6: guest to host
+iperf3s	ns 10002
+
+bw	-
+bw	-
+guest	ip link set dev __IFNAME__ mtu 1280
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 8M
+bw	__BW__ 1.2 1.5
+guest	ip link set dev __IFNAME__ mtu 1500
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 16M
+bw	__BW__ 1.6 1.8
+guest	ip link set dev __IFNAME__ mtu 9000
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 4.0 5.0
+guest	ip link set dev __IFNAME__ mtu 65520
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 7.0 8.0
+
+iperf3k	ns
+
+tl	TCP RR latency over IPv6: guest to host
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+nsb	tcp_rr --nolog -6
+gout	LAT tcp_rr --nolog -l1 -6 -c -H __MAP_NS6__ | 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 -l1 -6 -c -H __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p'
+lat	__LAT__ 500 400
+
+tr	TCP throughput over IPv4: guest to host
+iperf3s	ns 10002
+
+guest	ip link set dev __IFNAME__ mtu 256
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 8M
+bw	__BW__ 0.2 0.3
+guest	ip link set dev __IFNAME__ mtu 576
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 8M
+bw	__BW__ 0.5 0.8
+guest	ip link set dev __IFNAME__ mtu 1280
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 16M
+bw	__BW__ 1.2 1.5
+guest	ip link set dev __IFNAME__ mtu 1500
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 16M
+bw	__BW__ 1.6 1.8
+guest	ip link set dev __IFNAME__ mtu 9000
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 4.0 5.0
+guest	ip link set dev __IFNAME__ mtu 65520
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 7.0 8.0
+
+iperf3k	ns
+
+# Reducing MTU below 1280 deconfigures IPv6, get our address back
+guest	dhclient -6 -x
+guest	dhclient -6 __IFNAME__
+
+tl	TCP RR latency over IPv4: guest to host
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+nsb	tcp_rr --nolog -4
+gout	LAT tcp_rr --nolog -l1 -4 -c -H __MAP_NS4__ | 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 -l1 -4 -c -H __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p'
+lat	__LAT__ 500 400
+
+tr	TCP throughput over IPv6: host to guest
+iperf3s	guest 10001
+
+bw	-
+bw	-
+bw	-
+bw	-
+bw	-
+iperf3	BW ns ::1 10001 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 6.0 6.8
+
+iperf3k	guest
+
+tl	TCP RR latency over IPv6: host to guest
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+guestb	tcp_rr --nolog -P 10001 -C 10011 -6
+sleep	1
+nsout	LAT tcp_rr --nolog -l1 -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
+sleep	1
+nsout	LAT tcp_crr --nolog -l1 -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
+iperf3s	guest 10001
+
+bw	-
+bw	-
+bw	-
+bw	-
+bw	-
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -w 32M
+bw	__BW__ 6.0 6.8
+
+iperf3k	guest
+
+tl	TCP RR latency over IPv4: host to guest
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+guestb	tcp_rr --nolog -P 10001 -C 10011 -4
+sleep	1
+nsout	LAT tcp_rr --nolog -l1 -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
+sleep	1
+nsout	LAT tcp_crr --nolog -l1 -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
+lat	__LAT__ 500 300
+
+te
diff --git a/test/perf/passtvu_udp b/test/perf/passtvu_udp
new file mode 100644
index 0000000..e9941a0
--- /dev/null
+++ b/test/perf/passtvu_udp
@@ -0,0 +1,159 @@
+# 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/passtvu_udp - Check UDP performance in passt vhost-user mode
+#
+# Copyright (c) 2021 Red Hat GmbH
+# Author: Stefano Brivio <sbrivio@redhat.com>
+
+gtools	/sbin/sysctl ip jq nproc sleep iperf3 udp_rr # From neper
+nstools	ip jq sleep iperf3 udp_rr
+htools	bc head sed
+
+set	MAP_NS4 192.0.2.2
+set	MAP_NS6 2001:db8:9a55::2
+
+test	passt with vhost-user: 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
+
+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 2
+set	TIME 1
+set	OPTS -u -P __THREADS__ --pacing-timer 1000
+
+info	Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
+
+report	passtvu udp __THREADS__ __FREQ__
+
+th	pktlen 256B 576B 1280B 1500B 9000B 65520B
+
+tr	UDP throughput over IPv6: guest to host
+iperf3s	ns 10002
+# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
+
+bw	-
+bw	-
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 3G -l 1232
+bw	__BW__ 0.8 1.2
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 4G -l 1452
+bw	__BW__ 1.0 1.5
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 10G -l 8952
+bw	__BW__ 4.0 5.0
+iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -b 20G -l 64372
+bw	__BW__ 4.0 5.0
+
+iperf3k	ns
+
+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 __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p'
+lat	__LAT__ 200 150
+
+
+tr	UDP throughput over IPv4: guest to host
+iperf3s	ns 10002
+# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
+
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 1G -l 228
+bw	__BW__ 0.0 0.0
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 2G -l 548
+bw	__BW__ 0.4 0.6
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 3G -l 1252
+bw	__BW__ 0.8 1.2
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 4G -l 1472
+bw	__BW__ 1.0 1.5
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 10G -l 8972
+bw	__BW__ 4.0 5.0
+iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -b 20G -l 65492
+bw	__BW__ 4.0 5.0
+
+iperf3k	ns
+
+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 __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p'
+lat	__LAT__ 200 150
+
+
+tr	UDP throughput over IPv6: host to guest
+iperf3s	guest 10001
+# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
+
+bw	-
+bw	-
+iperf3	BW ns ::1 10001 __TIME__ __OPTS__ -b 3G -l 1232
+bw	__BW__ 0.8 1.2
+iperf3	BW ns ::1 10001 __TIME__ __OPTS__ -b 4G -l 1452
+bw	__BW__ 1.0 1.5
+iperf3	BW ns ::1 10001 __TIME__ __OPTS__ -b 10G -l 8952
+bw	__BW__ 3.0 4.0
+iperf3	BW ns ::1 10001 __TIME__ __OPTS__ -b 20G -l 64372
+bw	__BW__ 3.0 4.0
+
+iperf3k	guest
+
+tl	UDP RR latency over IPv6: host to guest
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+guestb	udp_rr --nolog -P 10001 -C 10011 -6
+sleep	1
+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
+iperf3s	guest 10001
+# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
+
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 1G -l 228
+bw	__BW__ 0.0 0.0
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 2G -l 548
+bw	__BW__ 0.4 0.6
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 3G -l 1252
+bw	__BW__ 0.8 1.2
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 4G -l 1472
+bw	__BW__ 1.0 1.5
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 10G -l 8972
+bw	__BW__ 3.0 4.0
+iperf3	BW ns 127.0.0.1 10001 __TIME__ __OPTS__ -b 20G -l 65492
+bw	__BW__ 3.0 4.0
+
+iperf3k	guest
+
+tl	UDP RR latency over IPv4: host to guest
+lat	-
+lat	-
+lat	-
+lat	-
+lat	-
+guestb	udp_rr --nolog -P 10001 -C 10011 -4
+sleep	1
+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
diff --git a/test/run b/test/run
index cd6d707..ebcfcf5 100755
--- a/test/run
+++ b/test/run
@@ -113,6 +113,7 @@ run() {
 	teardown two_guests
 
 	VALGRIND=0
+	VHOST_USER=0
 	setup passt_in_ns
 	test passt/ndp
 	test passt_in_ns/dhcp
@@ -123,6 +124,15 @@ run() {
 	test passt_in_ns/shutdown
 	teardown passt_in_ns
 
+	VHOST_USER=1
+	setup passt_in_ns
+	test passt/ndp
+	test passt_in_ns/dhcp
+	test perf/passtvu_tcp
+	test perf/passtvu_udp
+	test passt_in_ns/shutdown
+	teardown passt_in_ns
+
 	# TODO: Make those faster by at least pre-installing gcc and make on
 	# non-x86 images, then re-enable.
 skip_distro() {
-- 
@@ -113,6 +113,7 @@ run() {
 	teardown two_guests
 
 	VALGRIND=0
+	VHOST_USER=0
 	setup passt_in_ns
 	test passt/ndp
 	test passt_in_ns/dhcp
@@ -123,6 +124,15 @@ run() {
 	test passt_in_ns/shutdown
 	teardown passt_in_ns
 
+	VHOST_USER=1
+	setup passt_in_ns
+	test passt/ndp
+	test passt_in_ns/dhcp
+	test perf/passtvu_tcp
+	test perf/passtvu_udp
+	test passt_in_ns/shutdown
+	teardown passt_in_ns
+
 	# TODO: Make those faster by at least pre-installing gcc and make on
 	# non-x86 images, then re-enable.
 skip_distro() {
-- 
2.43.0