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Date: Mon, 11 Nov 2024 13:48:49 +1100
From: David Gibson <david@gibson.dropbear.id.au>
To: Laurent Vivier <lvivier@redhat.com>
Subject: Re: [PATCH v10 08/12] test: Add tests for passt in vhost-user mode
Message-ID: <ZzFwkfDlUmcOhhFa@zatzit>
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On Fri, Nov 08, 2024 at 11:37:27AM +0100, Laurent Vivier wrote:
> From: Stefano Brivio <sbrivio@redhat.com>
>=20
> Run functional and performance tests for vhost-user mode as well. For
> functional tests, we add passt_vu and passt_vu_in_ns as symbolic links
> to their non-vhost-user counterparts, as no differences are intended
> but we want to distinguish them in test logs.
>=20
> For performance tests, instead, we add separate perf/passt_vu_tcp and
> perf/passt_vu_udp files, as we need longer test duration, as well as
> higher UDP sending bandwidths and larger TCP windows, to actually get
> the highest throughput vhost-user mode offers.
>=20
> For valgrind tests, vhost-user mode needs two extra system calls:
> statx and readlink. Add them as EXTRA_SYSCALLS for the valgrind
> target.
>=20
> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

> ---
>  Makefile               |   3 +-
>  test/lib/perf_report   |  15 +++
>  test/lib/setup         |  77 ++++++++++++---
>  test/lib/setup_ugly    |   2 +-
>  test/passt_vu          |   1 +
>  test/passt_vu_in_ns    |   1 +
>  test/perf/passt_vu_tcp | 211 +++++++++++++++++++++++++++++++++++++++++
>  test/perf/passt_vu_udp | 159 +++++++++++++++++++++++++++++++
>  test/run               |  25 +++++
>  test/two_guests_vu     |   1 +
>  10 files changed, 479 insertions(+), 16 deletions(-)
>  create mode 120000 test/passt_vu
>  create mode 120000 test/passt_vu_in_ns
>  create mode 100644 test/perf/passt_vu_tcp
>  create mode 100644 test/perf/passt_vu_udp
>  create mode 120000 test/two_guests_vu
>=20
> diff --git a/Makefile b/Makefile
> index 1dc12c5cc52f..8792ae4aef4d 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -123,7 +123,8 @@ qrap: $(QRAP_SRCS) passt.h
> =20
>  valgrind: EXTRA_SYSCALLS +=3D rt_sigprocmask rt_sigtimedwait rt_sigactio=
n	\
>  			    rt_sigreturn getpid gettid kill clock_gettime mmap \
> -			    mmap2 munmap open unlink gettimeofday futex
> +			    mmap2 munmap open unlink gettimeofday futex statx \
> +			    readlink
>  valgrind: FLAGS +=3D -g -DVALGRIND
>  valgrind: all
> =20
> diff --git a/test/lib/perf_report b/test/lib/perf_report
> index d1ef50bfe0d5..c4ec817bcd1e 100755
> --- a/test/lib/perf_report
> +++ b/test/lib/perf_report
> @@ -49,6 +49,21 @@ td:empty { visibility: hidden; }
>  	__passt_tcp_LINE__ __passt_udp_LINE__
>  </table>
> =20
> +</li><li><p>passt with vhost-user support</p>
> +<table class=3D"passt" width=3D"70%">
> +	<tr>
> +		<th/>
> +		<th id=3D"perf_passt_vu_tcp" colspan=3D"__passt_vu_tcp_cols__">TCP, __=
passt_vu_tcp_threads__ at __passt_vu_tcp_freq__ GHz</th>
> +		<th id=3D"perf_passt_vu_udp" colspan=3D"__passt_vu_udp_cols__">UDP, __=
passt_vu_udp_threads__ at __passt_vu_udp_freq__ GHz</th>
> +	</tr>
> +	<tr>
> +		<td align=3D"right">MTU:</td>
> +		__passt_vu_tcp_header__
> +		__passt_vu_udp_header__
> +	</tr>
> +	__passt_vu_tcp_LINE__ __passt_vu_udp_LINE__
> +</table>
> +
>  <style type=3D"text/CSS">
>  table.pasta_local td { border: 0px solid; padding: 6px; line-height: 1; }
>  table.pasta_local td { text-align: right; }
> diff --git a/test/lib/setup b/test/lib/setup
> index 5338393ce35c..580825f1f9a7 100755
> --- a/test/lib/setup
> +++ b/test/lib/setup
> @@ -15,8 +15,7 @@
> =20
>  INITRAMFS=3D"${BASEPATH}/mbuto.img"
>  VCPUS=3D"$( [ $(nproc) -ge 8 ] && echo 6 || echo $(( $(nproc) / 2 + 1 ))=
 )"
> -__mem_kib=3D"$(sed -n 's/MemTotal:[ ]*\([0-9]*\) kB/\1/p' /proc/meminfo)"
> -VMEM=3D"$((${__mem_kib} / 1024 / 4))"
> +MEM_KIB=3D"$(sed -n 's/MemTotal:[ ]*\([0-9]*\) kB/\1/p' /proc/meminfo)"
>  QEMU_ARCH=3D"$(uname -m)"
>  [ "${QEMU_ARCH}" =3D "i686" ] && QEMU_ARCH=3Di386
> =20
> @@ -46,6 +45,7 @@ setup_passt() {
>  	[ ${PCAP} -eq 1 ] && __opts=3D"${__opts} -p ${LOGDIR}/passt.pcap"
>  	[ ${DEBUG} -eq 1 ] && __opts=3D"${__opts} -d"
>  	[ ${TRACE} -eq 1 ] && __opts=3D"${__opts} --trace"
> +	[ ${VHOST_USER} -eq 1 ] && __opts=3D"${__opts} --vhost-user"
> =20
>  	context_run passt "make clean"
>  	context_run passt "make valgrind"
> @@ -54,16 +54,29 @@ setup_passt() {
>  	# pidfile isn't created until passt is listening
>  	wait_for [ -f "${STATESETUP}/passt.pid" ]
> =20
> +	__vmem=3D"$((${MEM_KIB} / 1024 / 4))"
> +	if [ ${VHOST_USER} -eq 1 ]; then
> +		__vmem=3D"$(((${__vmem} + 500) / 1000))G"
> +		__qemu_netdev=3D"						       \
> +			-chardev socket,id=3Dc,path=3D${STATESETUP}/passt.socket   \
> +			-netdev vhost-user,id=3Dv,chardev=3Dc		       \
> +			-device virtio-net,netdev=3Dv			       \
> +			-object memory-backend-memfd,id=3Dm,share=3Don,size=3D${__vmem} \
> +			-numa node,memdev=3Dm"
> +	else
> +		__qemu_netdev=3D"-device virtio-net-pci,netdev=3Ds		       \
> +			-netdev stream,id=3Ds,server=3Doff,addr.type=3Dunix,addr.path=3D${STA=
TESETUP}/passt.socket"
> +	fi
> +
>  	GUEST_CID=3D94557
>  	context_run_bg qemu 'qemu-system-'"${QEMU_ARCH}"		   \
>  		' -machine accel=3Dkvm'                                      \
> -		' -m '${VMEM}' -cpu host -smp '${VCPUS}                    \
> +		' -m '${__vmem}' -cpu host -smp '${VCPUS}		   \
>  		' -kernel '"${KERNEL}"					   \
>  		' -initrd '${INITRAMFS}' -nographic -serial stdio'	   \
>  		' -nodefaults'						   \
>  		' -append "console=3DttyS0 mitigations=3Doff apparmor=3D0" '	   \
> -		' -device virtio-net-pci,netdev=3Ds0 '			   \
> -		" -netdev stream,id=3Ds0,server=3Doff,addr.type=3Dunix,addr.path=3D${S=
TATESETUP}/passt.socket " \
> +		" ${__qemu_netdev}"					   \
>  		" -pidfile ${STATESETUP}/qemu.pid"			   \
>  		" -device vhost-vsock-pci,guest-cid=3D$GUEST_CID"
> =20
> @@ -142,6 +155,7 @@ setup_passt_in_ns() {
>  	[ ${PCAP} -eq 1 ] && __opts=3D"${__opts} -p ${LOGDIR}/passt_in_pasta.pc=
ap"
>  	[ ${DEBUG} -eq 1 ] && __opts=3D"${__opts} -d"
>  	[ ${TRACE} -eq 1 ] && __opts=3D"${__opts} --trace"
> +	[ ${VHOST_USER} -eq 1 ] && __opts=3D"${__opts} --vhost-user"
> =20
>  	if [ ${VALGRIND} -eq 1 ]; then
>  		context_run passt "make clean"
> @@ -154,17 +168,30 @@ setup_passt_in_ns() {
>  	fi
>  	wait_for [ -f "${STATESETUP}/passt.pid" ]
> =20
> +	__vmem=3D"$((${MEM_KIB} / 1024 / 4))"
> +	if [ ${VHOST_USER} -eq 1 ]; then
> +		__vmem=3D"$(((${__vmem} + 500) / 1000))G"
> +		__qemu_netdev=3D"						       \
> +			-chardev socket,id=3Dc,path=3D${STATESETUP}/passt.socket   \
> +			-netdev vhost-user,id=3Dv,chardev=3Dc		       \
> +			-device virtio-net,netdev=3Dv			       \
> +			-object memory-backend-memfd,id=3Dm,share=3Don,size=3D${__vmem} \
> +			-numa node,memdev=3Dm"
> +	else
> +		__qemu_netdev=3D"-device virtio-net-pci,netdev=3Ds		       \
> +			-netdev stream,id=3Ds,server=3Doff,addr.type=3Dunix,addr.path=3D${STA=
TESETUP}/passt.socket"
> +	fi
> +
>  	GUEST_CID=3D94557
>  	context_run_bg qemu 'qemu-system-'"${QEMU_ARCH}"		   \
>  		' -machine accel=3Dkvm'                                      \
>  		' -M accel=3Dkvm:tcg'                                        \
> -		' -m '${VMEM}' -cpu host -smp '${VCPUS}                    \
> +		' -m '${__vmem}' -cpu host -smp '${VCPUS}		   \
>  		' -kernel '"${KERNEL}"					   \
>  		' -initrd '${INITRAMFS}' -nographic -serial stdio'	   \
>  		' -nodefaults'						   \
>  		' -append "console=3DttyS0 mitigations=3Doff apparmor=3D0" '	   \
> -		' -device virtio-net-pci,netdev=3Ds0 '			   \
> -		" -netdev stream,id=3Ds0,server=3Doff,addr.type=3Dunix,addr.path=3D${S=
TATESETUP}/passt.socket " \
> +		" ${__qemu_netdev}"					   \
>  		" -pidfile ${STATESETUP}/qemu.pid"			   \
>  		" -device vhost-vsock-pci,guest-cid=3D$GUEST_CID"
> =20
> @@ -214,6 +241,7 @@ setup_two_guests() {
>  	[ ${PCAP} -eq 1 ] && __opts=3D"${__opts} -p ${LOGDIR}/passt_1.pcap"
>  	[ ${DEBUG} -eq 1 ] && __opts=3D"${__opts} -d"
>  	[ ${TRACE} -eq 1 ] && __opts=3D"${__opts} --trace"
> +	[ ${VHOST_USER} -eq 1 ] && __opts=3D"${__opts} --vhost-user"
> =20
>  	context_run_bg passt_1 "./passt -s ${STATESETUP}/passt_1.socket -P ${ST=
ATESETUP}/passt_1.pid -f ${__opts} -t 10001 -u 10001"
>  	wait_for [ -f "${STATESETUP}/passt_1.pid" ]
> @@ -222,33 +250,54 @@ setup_two_guests() {
>  	[ ${PCAP} -eq 1 ] && __opts=3D"${__opts} -p ${LOGDIR}/passt_2.pcap"
>  	[ ${DEBUG} -eq 1 ] && __opts=3D"${__opts} -d"
>  	[ ${TRACE} -eq 1 ] && __opts=3D"${__opts} --trace"
> +	[ ${VHOST_USER} -eq 1 ] && __opts=3D"${__opts} --vhost-user"
> =20
>  	context_run_bg passt_2 "./passt -s ${STATESETUP}/passt_2.socket -P ${ST=
ATESETUP}/passt_2.pid -f ${__opts} -t 10004 -u 10004"
>  	wait_for [ -f "${STATESETUP}/passt_2.pid" ]
> =20
> +	__vmem=3D"$((${MEM_KIB} / 1024 / 4))"
> +	if [ ${VHOST_USER} -eq 1 ]; then
> +		__vmem=3D"$(((${__vmem} + 500) / 1000))G"
> +		__qemu_netdev1=3D"					       \
> +			-chardev socket,id=3Dc,path=3D${STATESETUP}/passt_1.socket \
> +			-netdev vhost-user,id=3Dv,chardev=3Dc		       \
> +			-device virtio-net,netdev=3Dv			       \
> +			-object memory-backend-memfd,id=3Dm,share=3Don,size=3D${__vmem} \
> +			-numa node,memdev=3Dm"
> +		__qemu_netdev2=3D"					       \
> +			-chardev socket,id=3Dc,path=3D${STATESETUP}/passt_2.socket \
> +			-netdev vhost-user,id=3Dv,chardev=3Dc		       \
> +			-device virtio-net,netdev=3Dv			       \
> +			-object memory-backend-memfd,id=3Dm,share=3Don,size=3D${__vmem} \
> +			-numa node,memdev=3Dm"
> +	else
> +		__qemu_netdev1=3D"-device virtio-net-pci,netdev=3Ds		       \
> +			-netdev stream,id=3Ds,server=3Doff,addr.type=3Dunix,addr.path=3D${STA=
TESETUP}/passt_1.socket"
> +		__qemu_netdev2=3D"-device virtio-net-pci,netdev=3Ds		       \
> +			-netdev stream,id=3Ds,server=3Doff,addr.type=3Dunix,addr.path=3D${STA=
TESETUP}/passt_2.socket"
> +	fi
> +
>  	GUEST_1_CID=3D94557
>  	context_run_bg qemu_1 'qemu-system-'"${QEMU_ARCH}"		     \
>  		' -M accel=3Dkvm:tcg'                                          \
> -		' -m '${VMEM}' -cpu host -smp '${VCPUS}                      \
> +		' -m '${__vmem}' -cpu host -smp '${VCPUS}		     \
>  		' -kernel '"${KERNEL}"					     \
>  		' -initrd '${INITRAMFS}' -nographic -serial stdio'	     \
>  		' -nodefaults'						     \
>  		' -append "console=3DttyS0 mitigations=3Doff apparmor=3D0" '	     \
> -		' -device virtio-net-pci,netdev=3Ds0 '			     \
> -		" -netdev stream,id=3Ds0,server=3Doff,addr.type=3Dunix,addr.path=3D${S=
TATESETUP}/passt_1.socket " \
> +		" ${__qemu_netdev1}"					     \
>  		" -pidfile ${STATESETUP}/qemu_1.pid"			     \
>  		" -device vhost-vsock-pci,guest-cid=3D$GUEST_1_CID"
> =20
>  	GUEST_2_CID=3D94558
>  	context_run_bg qemu_2 'qemu-system-'"${QEMU_ARCH}"		     \
>  		' -M accel=3Dkvm:tcg'                                          \
> -		' -m '${VMEM}' -cpu host -smp '${VCPUS}                      \
> +		' -m '${__vmem}' -cpu host -smp '${VCPUS}		     \
>  		' -kernel '"${KERNEL}"					     \
>  		' -initrd '${INITRAMFS}' -nographic -serial stdio'	     \
>  		' -nodefaults'						     \
>  		' -append "console=3DttyS0 mitigations=3Doff apparmor=3D0" '	     \
> -		' -device virtio-net-pci,netdev=3Ds0 '			     \
> -		" -netdev stream,id=3Ds0,server=3Doff,addr.type=3Dunix,addr.path=3D${S=
TATESETUP}/passt_2.socket " \
> +		" ${__qemu_netdev2}"					     \
>  		" -pidfile ${STATESETUP}/qemu_2.pid"			     \
>  		" -device vhost-vsock-pci,guest-cid=3D$GUEST_2_CID"
> =20
> diff --git a/test/lib/setup_ugly b/test/lib/setup_ugly
> index 4b2a0774de1d..2802cc3bb43b 100755
> --- a/test/lib/setup_ugly
> +++ b/test/lib/setup_ugly
> @@ -33,7 +33,7 @@ setup_memory() {
> =20
>  	pane_or_context_run guest 'qemu-system-$(uname -m)'		   \
>  		' -machine accel=3Dkvm'                                      \
> -		' -m '${VMEM}' -cpu host -smp '${VCPUS}                    \
> +		' -m '$((${MEM_KIB} / 1024 / 4))' -cpu host -smp '${VCPUS}            =
        \
>  		' -kernel ' "/boot/vmlinuz-$(uname -r)"			   \
>  		' -initrd '${INITRAMFS_MEM}' -nographic -serial stdio'	   \
>  		' -nodefaults'						   \
> diff --git a/test/passt_vu b/test/passt_vu
> new file mode 120000
> index 000000000000..22f1840d1ad6
> --- /dev/null
> +++ b/test/passt_vu
> @@ -0,0 +1 @@
> +passt
> \ No newline at end of file
> diff --git a/test/passt_vu_in_ns b/test/passt_vu_in_ns
> new file mode 120000
> index 000000000000..3ff479e0436b
> --- /dev/null
> +++ b/test/passt_vu_in_ns
> @@ -0,0 +1 @@
> +passt_in_ns
> \ No newline at end of file
> diff --git a/test/perf/passt_vu_tcp b/test/perf/passt_vu_tcp
> new file mode 100644
> index 000000000000..b43400804e64
> --- /dev/null
> +++ b/test/perf/passt_vu_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/passt_vu_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 n=
eper
> +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: throughput and latency
> +
> +guest	/sbin/sysctl -w net.core.rmem_max=3D536870912
> +guest	/sbin/sysctl -w net.core.wmem_max=3D536870912
> +guest	/sbin/sysctl -w net.core.rmem_default=3D33554432
> +guest	/sbin/sysctl -w net.core.wmem_default=3D33554432
> +guest	/sbin/sysctl -w net.ipv4.tcp_rmem=3D"4096 131072 268435456"
> +guest	/sbin/sysctl -w net.ipv4.tcp_wmem=3D"4096 131072 268435456"
> +guest	/sbin/sysctl -w net.ipv4.tcp_timestamps=3D0
> +
> +ns	/sbin/sysctl -w net.ipv4.tcp_rmem=3D"4096 524288 134217728"
> +ns	/sbin/sysctl -w net.ipv4.tcp_wmem=3D"4096 524288 134217728"
> +ns	/sbin/sysctl -w net.ipv4.tcp_timestamps=3D0
> +
> +gout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type =3D=3D "et=
her").ifname'
> +
> +hout	FREQ_PROCFS (echo "scale=3D1"; 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=3D1"; 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 __F=
REQ_PROCFS__
> +
> +set	THREADS 4
> +set	TIME 5
> +set	OMIT 0.1
> +set	OPTS -Z -P __THREADS__ -l 1M -O__OMIT__ -N
> +
> +info	Throughput in Gbps, latency in =B5s, __THREADS__ threads at __FREQ_=
_ GHz
> +report	passt_vu 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 16M
> +bw	__BW__ 1.2 1.5
> +guest	ip link set dev __IFNAME__ mtu 1500
> +iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 32M
> +bw	__BW__ 1.6 1.8
> +guest	ip link set dev __IFNAME__ mtu 9000
> +iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 64M
> +bw	__BW__ 4.0 5.0
> +guest	ip link set dev __IFNAME__ mtu 65520
> +iperf3	BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 64M
> +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=
=3D\(.*\)/\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/^throughpu=
t=3D\(.*\)/\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 2M
> +bw	__BW__ 0.2 0.3
> +guest	ip link set dev __IFNAME__ mtu 576
> +iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 4M
> +bw	__BW__ 0.5 0.8
> +guest	ip link set dev __IFNAME__ mtu 1280
> +iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 8M
> +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 64M
> +bw	__BW__ 4.0 5.0
> +guest	ip link set dev __IFNAME__ mtu 65520
> +iperf3	BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 64M
> +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=
=3D\(.*\)/\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/^throughpu=
t=3D\(.*\)/\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=3D\(.*\)/\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=3D\(.*\)/\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=3D\(.*\)/\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=3D\(.*\)/\1/p'
> +lat	__LAT__ 500 300
> +
> +te
> diff --git a/test/perf/passt_vu_udp b/test/perf/passt_vu_udp
> new file mode 100644
> index 000000000000..943ac11b4a51
> --- /dev/null
> +++ b/test/perf/passt_vu_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/passt_vu_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: throughput and latency
> +
> +guest	/sbin/sysctl -w net.core.rmem_max=3D16777216
> +guest	/sbin/sysctl -w net.core.wmem_max=3D16777216
> +guest	/sbin/sysctl -w net.core.rmem_default=3D16777216
> +guest	/sbin/sysctl -w net.core.wmem_default=3D16777216
> +
> +hout	FREQ_PROCFS (echo "scale=3D1"; 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=3D1"; 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 __F=
REQ_PROCFS__
> +
> +set	THREADS 2
> +set	TIME 1
> +set	OPTS -u -P __THREADS__ --pacing-timer 1000
> +
> +info	Throughput in Gbps, latency in =B5s, __THREADS__ threads at __FREQ_=
_ GHz
> +
> +report	passt_vu udp __THREADS__ __FREQ__
> +
> +th	pktlen 256B 576B 1280B 1500B 9000B 65520B
> +
> +tr	UDP throughput over IPv6: guest to host
> +iperf3s	ns 10002
> +# (datagram size) =3D (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=3D\=
(.*\)/\1/p'
> +lat	__LAT__ 200 150
> +
> +
> +tr	UDP throughput over IPv4: guest to host
> +iperf3s	ns 10002
> +# (datagram size) =3D (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=3D\=
(.*\)/\1/p'
> +lat	__LAT__ 200 150
> +
> +
> +tr	UDP throughput over IPv6: host to guest
> +iperf3s	guest 10001
> +# (datagram size) =3D (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/^thr=
oughput=3D\(.*\)/\1/p'
> +lat	__LAT__ 200 150
> +
> +
> +tr	UDP throughput over IPv4: host to guest
> +iperf3s	guest 10001
> +# (datagram size) =3D (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=3D\(.*\)/\1/p'
> +lat	__LAT__ 200 150
> +
> +te
> diff --git a/test/run b/test/run
> index 547a729b3fbe..f188d8eaf2e0 100755
> --- a/test/run
> +++ b/test/run
> @@ -93,6 +93,7 @@ run() {
>  	test memory/passt
>  	teardown memory
> =20
> +	VHOST_USER=3D0
>  	setup passt
>  	test passt/ndp
>  	test passt/dhcp
> @@ -115,7 +116,22 @@ run() {
>  	test two_guests/basic
>  	teardown two_guests
> =20
> +	VHOST_USER=3D1
> +	setup passt_in_ns
> +	test passt_vu/ndp
> +	test passt_vu_in_ns/dhcp
> +	test passt_vu_in_ns/icmp
> +	test passt_vu_in_ns/tcp
> +	test passt_vu_in_ns/udp
> +	test passt_vu_in_ns/shutdown
> +	teardown passt_in_ns
> +
> +	setup two_guests
> +	test two_guests_vu/basic
> +	teardown two_guests
> +
>  	VALGRIND=3D0
> +	VHOST_USER=3D0
>  	setup passt_in_ns
>  	test passt/ndp
>  	test passt_in_ns/dhcp
> @@ -126,6 +142,15 @@ run() {
>  	test passt_in_ns/shutdown
>  	teardown passt_in_ns
> =20
> +	VHOST_USER=3D1
> +	setup passt_in_ns
> +	test passt_vu/ndp
> +	test passt_vu_in_ns/dhcp
> +	test perf/passt_vu_tcp
> +	test perf/passt_vu_udp
> +	test passt_vu_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() {
> diff --git a/test/two_guests_vu b/test/two_guests_vu
> new file mode 120000
> index 000000000000..a8648fc7c9fb
> --- /dev/null
> +++ b/test/two_guests_vu
> @@ -0,0 +1 @@
> +two_guests
> \ No newline at end of file

--=20
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson

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