250. vhost/virtio qemu multi-paths and port restart test plan

250.1. Description

Benchmark pvp qemu test with 3 tx/rx paths,includes mergeable, normal, vector_rx. Cover virtio 1.1, virtio 1.0, virtio 0.95, also cover port restart test with each path.

250.2. Test flow

TG –> NIC –> Vhost –> Virtio–> Vhost –> NIC –> TG

250.3. Test Case 1: pvp test with virtio 0.95 mergeable path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with mrg_rxbuf feature on:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f \
-net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.4. Test Case 2: pvp test with virtio 0.95 normal path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with mrg_rxbuf feature off:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd with tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --tx-offloads=0x0 --enable-hw-vlan-strip --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.5. Test Case 3: pvp test with virtio 0.95 vector_rx path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with mrg_rxbuf feature off:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd without ant tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0,vectorized=1 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.6. Test Case 4: pvp test with virtio 1.0 mergeable path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.7. Test Case 5: pvp test with virtio 1.0 normal path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd with tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --tx-offloads=0x0 --enable-hw-vlan-strip --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.8. Test Case 6: pvp test with virtio 1.0 vector_rx path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd without tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0,vectorized=1 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.9. Test Case 7: pvp test with virtio 1.1 mergeable path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.1:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,packed=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.10. Test Case 8: pvp test with virtio 1.1 normal path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.1:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,packed=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd with tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --tx-offloads=0x0 --enable-hw-vlan-strip --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.11. Test Case 9: pvp test with virtio 1.1 vector_rx path

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.1:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,packed=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd without tx-offloads:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0,vectorized=1 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64,128,256,512,1024,1280,1518), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

250.12. Test Case 10: pvp test with virtio 1.0 mergeable path restart 10 times

  1. Bind 1 NIC port to vfio-pci, then launch testpmd by below command:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xe -n 4 -a 0000:af:00.0 \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM with 1 virtio, note: we need add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name vm0 -enable-kvm -cpu host -smp 2 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img  \
-chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 -device virtio-serial \
-device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.2 -daemonize \
-monitor unix:/tmp/vm0_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6000-:22 \
-chardev socket,id=char0,path=./vhost-net \
-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1024,tx_queue_size=1024 \
-vnc :10

  3. On VM, bind virtio net to vfio-pci and run testpmd:

    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 1 -a 0000:04:00.0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  4. Send packets by packet generator with different packet sizes(64), show throughput with below command:

    testpmd>show port stats all

  5. Stop port at vhost side by below command and re-calculate the average throughput,verify the throughput is zero after port stop:

    testpmd>stop
testpmd>port stop 0
testpmd>show port stats 0

  6. Restart port at vhost side by below command and re-calculate the average throughput,verify the throughput is not zero after port restart:

    testpmd>clear port stats all
testpmd>port start all
testpmd>start
testpmd>show port stats 0

  7. Rerun steps 4-6 10 times to check stability.