[dts] [PATCH V2 1/3] test_plans/vhost_virtio_pmd_interrupt_test_plan.rst

[dts] [PATCH V2 1/3] test_plans/vhost_virtio_pmd_interrupt_test_plan.rst

[Yinan Wang]

Add cases for cbdma packed ring tets.

Signed-off-by: Yinan Wang <yinan.wang@intel.com>
---
 .../vhost_virtio_pmd_interrupt_test_plan.rst  | 39 ++++++++++++++++++-
 1 file changed, 37 insertions(+), 2 deletions(-)

diff --git a/test_plans/vhost_virtio_pmd_interrupt_test_plan.rst b/test_plans/vhost_virtio_pmd_interrupt_test_plan.rst
index 762ef72c..63095bff 100644
--- a/test_plans/vhost_virtio_pmd_interrupt_test_plan.rst
+++ b/test_plans/vhost_virtio_pmd_interrupt_test_plan.rst
@@ -212,7 +212,7 @@ Test Case 4: Packed ring virtio interrupt test with 16 queues
 Test Case 5: Basic virtio interrupt test with 16 queues and cbdma enabled
 =========================================================================
 
-1. Bind 16 cbdma ports and one NIC port to igb_uio, then launch testpmd by below command::
+1. Bind 16 cbdma channels and one NIC port to igb_uio, then launch testpmd by below command::
 
     ./testpmd -c 0x1ffff -n 4 --vdev 'eth_vhost0,iface=vhost-net,queues=16,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=1024' -- -i --nb-cores=16 --rxq=16 --txq=16 --rss-ip
 
@@ -247,7 +247,7 @@ Test Case 5: Basic virtio interrupt test with 16 queues and cbdma enabled
 Test Case 6: Basic virtio-1.0 interrupt test with 4 queues and cbdma enabled
 ============================================================================
 
-1. Bind four cbdma port and one NIC port to igb_uio, then launch testpmd by below command::
+1. Bind four cbdma channels and one NIC port to igb_uio, then launch testpmd by below command::
 
     ./testpmd -c 0x7c -n 4 --vdev 'net_vhost0,iface=vhost-net,queues=4,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3]' -- -i --nb-cores=4 --rxq=4 --txq=4 --rss-ip
 
@@ -278,3 +278,38 @@ Test Case 6: Basic virtio-1.0 interrupt test with 4 queues and cbdma enabled
 6. Change dest IP address to fixed ip, packets will distribute to 1 queue, check l3fwd-power log that only one related core is waked up.
 
 7. Stop the date transmitter, check all related core will be back to sleep status.
+
+Test Case 7: Packed ring virtio interrupt test with 16 queues and cbdma enabled
+===============================================================================
+
+1. Bind 16 cbdma channels ports and one NIC port to igb_uio, then launch testpmd by below command::
+
+    ./testpmd -c 0x1ffff -n 4 --vdev 'eth_vhost0,iface=vhost-net,queues=16,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=1024' -- -i --nb-cores=16 --rxq=16 --txq=16 --rss-ip
+
+2. Launch VM1, set queues=16, vectors>=2xqueues+2, mq=on::
+
+    taskset -c 34-35 \
+    qemu-system-x86_64 -name us-vhost-vm2 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=16,sockets=1 -drive file=/home/osimg/ubuntu1910.img \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+     -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+     -chardev socket,id=char1,path=./vhost-net -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce,queues=16 \
+     -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,mrg_rxbuf=on,csum=on,mq=on,vectors=40,packed=on  \
+     -vnc :11 -daemonize
+
+3. Bind virtio port to vfio-pci::
+
+    modprobe vfio enable_unsafe_noiommu_mode=1
+    modprobe vfio-pci
+    ./usertools/dpdk-devbind.py --bind=vfio-pci xx:xx.x
+
+4. In VM, launch l3fwd-power sample::
+
+    ./l3fwd-power -c 0x0ffff -n 4 --log-level='user1,7' -- -p 1 -P  --config '(0,0,0),(0,1,1),(0,2,2),(0,3,3)(0,4,4),(0,5,5),(0,6,6),(0,7,7)(0,8,8),(0,9,9),(0,10,10),(0,11,11)(0,12,12),(0,13,13),(0,14,14),(0,15,15)' --no-numa  --parse-ptype
+
+5. Send random dest ip address packets to host nic with packet generator, packets will distribute to all queues, check l3fwd-power log that all related cores are waked up.
+
+6. Change dest IP address to fixed ip, packets will distribute to 1 queue, check l3fwd-power log that only one related core is waked up.
+
+7. Stop the date transmitter, check all related core will be back to sleep status.
\ No newline at end of file
-- 
2.25.1

[dts] [PATCH V2 2/3] test_plans/vhost_virtio_user_interrupt_test_plan.rst

[Yinan Wang]

Add cases for cbdma packed ring test.

Signed-off-by: Yinan Wang <yinan.wang@intel.com>
---
 .../vhost_virtio_user_interrupt_test_plan.rst | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/test_plans/vhost_virtio_user_interrupt_test_plan.rst b/test_plans/vhost_virtio_user_interrupt_test_plan.rst
index 07c1d882..4ef4cac4 100644
--- a/test_plans/vhost_virtio_user_interrupt_test_plan.rst
+++ b/test_plans/vhost_virtio_user_interrupt_test_plan.rst
@@ -246,3 +246,51 @@ flow: TG --> NIC --> Vhost --> Virtio
 4. Stop sending packets with packet generator, check virtio-user related core change to sleep status.
 
 5. Restart sending packets with packet generator, check virtio-user related core change to wakeup status again.
+
+Test Case9: LSC event between vhost-user and virtio-user with packed ring and cbdma enabled
+===========================================================================================
+
+flow: Vhost <--> Virtio
+
+1. Bind one cbdma port to igb_uio driver, then start vhost-user side::
+
+    ./testpmd -c 0x3000 -n 4 -w 00:04.0 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net,queues=1,client=0,dmas=[txq0@00:04.0]' -- -i
+    testpmd>set fwd mac
+    testpmd>start
+
+2. Start virtio-user side::
+
+    ./testpmd -c 0xc000 -n 4 --no-pci --file-prefix=virtio --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=./vhost-net,packed_vq=1 -- -i --tx-offloads=0x00
+    testpmd>set fwd mac
+    testpmd>start
+
+3. Check the virtio-user side link status::
+
+    testpmd> show port info 0
+    #it should show "up"
+
+4. Quit the vhost-user side with testpmd, then check the virtio-user side link status::
+
+    testpmd> show port info 0
+    #it should show "down"
+
+Test Case10: Packed ring virtio-user interrupt test with vhost-user as backend and cbdma enabled
+================================================================================================
+
+flow: TG --> NIC --> Vhost --> Virtio
+
+1. Bind one cbdma port and one NIC port to igb_uio, launch testpmd with a virtual vhost device as backend::
+
+    ./testpmd -c 0x7c -n 4 --vdev 'net_vhost0,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i  --rxq=1 --txq=1
+    testpmd>start
+
+2. Start l3fwd-power with a virtio-user device::
+
+    ./l3fwd-power -c 0xc000 -n 4 --log-level='user1,7' --no-pci --file-prefix=l3fwd-pwd \
+    --vdev=virtio_user0,path=./vhost-net,packed_vq=1 -- -p 1 -P --config="(0,0,14)" --parse-ptype
+
+3. Send packets with packet generator, check the virtio-user related core can be wakeup status.
+
+4. Stop sending packets with packet generator, check virtio-user related core change to sleep status.
+
+5. Restart sending packets with packet generator, check virtio-user related core change to wakeup status again.
-- 
2.25.1

[dts] [PATCH V3 3/3] test_plans/virtio_event_idx_interrupt_test_plan.rst

[Yinan Wang]

Add cases for cbdma packed ring test.

Signed-off-by: Yinan Wang <yinan.wang@intel.com>
---
 .../virtio_event_idx_interrupt_test_plan.rst  | 77 ++++++++++++++++++-
 1 file changed, 75 insertions(+), 2 deletions(-)

diff --git a/test_plans/virtio_event_idx_interrupt_test_plan.rst b/test_plans/virtio_event_idx_interrupt_test_plan.rst
index eb26a13f..f30bfd6d 100644
--- a/test_plans/virtio_event_idx_interrupt_test_plan.rst
+++ b/test_plans/virtio_event_idx_interrupt_test_plan.rst
@@ -261,7 +261,7 @@ Test Case 6: Wake up packed ring virtio-net cores with event idx interrupt mode
 Test Case 7: Split ring virtio-pci driver reload test with CBDMA enabled
 ========================================================================
 
-1. Bind one nic port and one cbdma port to igb_uio, then launch the vhost sample by below commands::
+1. Bind one nic port and one cbdma channel to igb_uio, then launch the vhost sample by below commands::
 
     rm -rf vhost-net*
     ./testpmd -c 0xF0000000 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i --nb-cores=1 --txd=1024 --rxd=1024
@@ -299,7 +299,7 @@ Test Case 7: Split ring virtio-pci driver reload test with CBDMA enabled
 Test Case 8: Wake up split ring virtio-net cores with event idx interrupt mode and cbdma enabled 16 queues test
 ================================================================================================================
 
-1. Bind one nic port to igb_uio, then launch the vhost sample by below commands::
+1. Bind one nic port and 16 cbdma channels to igb_uio, then launch the vhost sample by below commands::
 
     rm -rf vhost-net*
     ./testpmd -l 1-17 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=64' -- -i --nb-cores=16 --txd=1024 --rxd=1024 --rxq=16 --txq=16
@@ -331,3 +331,76 @@ Test Case 8: Wake up split ring virtio-net cores with event idx interrupt mode a
     testpmd>start
     testpmd>stop
 
+Test Case 9: Packed ring virtio-pci driver reload test with CBDMA enabled
+=========================================================================
+
+1. Bind one nic port and one cbdma channel to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -c 0xF0000000 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on \
+     -vnc :12 -daemonize
+
+3. On VM1, set virtio device IP, send 10M packets from packet generator to nic then check virtio device can receive packets::
+
+    ifconfig [ens3] 1.1.1.2      # [ens3] is the name of virtio-net
+    tcpdump -i [ens3]
+
+4. Reload virtio-net driver by below cmds::
+
+    ifconfig [ens3] down
+    ./dpdk-devbind.py -u [00:03.0]   # [00:03.0] is the pci addr of virtio-net
+    ./dpdk-devbind.py -b virtio-pci [00:03.0]
+
+5. Check virtio device can receive packets again::
+
+    ifconfig [ens3] 1.1.1.2
+    tcpdump -i [ens3]
+
+6. Rerun step4 and step5 100 times to check event idx workable after driver reload.
+
+Test Case 10: Wake up packed ring virtio-net cores with event idx interrupt mode and cbdma enabled 16 queues test
+=================================================================================================================
+
+1. Bind one nic port and 16 cbdma channels to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -l 1-17 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=64' -- -i --nb-cores=16 --txd=1024 --rxd=1024 --rxq=16 --txq=16
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=16,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net,server -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce,queues=16 \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,mq=on,vectors=40,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on \
+     -vnc :12 -daemonize
+
+3. On VM1, give virtio device ip addr and enable vitio-net with 16 quques::
+
+    ifconfig [ens3] 1.1.1.2           # [ens3] is the name of virtio-net
+    ethtool -L [ens3] combined 16
+
+4. Send 10M different ip addr packets from packet generator to nic, check virtio-net interrupt times by below cmd in VM::
+
+    cat /proc/interrupts
+
+5. After two hours stress test, stop and restart testpmd, check each queue has new packets coming::
+
+    testpmd>stop
+    testpmd>start
+    testpmd>stop
+
-- 
2.25.1

[dts] [PATCH V3 0/3] Add cases for cbdma packed ring test

[Yinan Wang]

v3:
 -  fix typo issue.

v2: 
 -  fix typo issue. 

v1: 
 -  add more test scenario. 

Yinan Wang (3):
  test_plans/vhost_virtio_pmd_interrupt_test_plan.rst
  test_plans/vhost_virtio_user_interrupt_test_plan.rst
  test_plans/virtio_event_idx_interrupt_test_plan.rst

 .../vhost_virtio_pmd_interrupt_test_plan.rst  | 39 +++++++++-
 .../vhost_virtio_user_interrupt_test_plan.rst | 48 ++++++++++++
 .../virtio_event_idx_interrupt_test_plan.rst  | 77 ++++++++++++++++++-
 3 files changed, 160 insertions(+), 4 deletions(-)

-- 
2.25.1

[dts] [PATCH V3 3/3] test_plans/virtio_event_idx_interrupt_test_plan.rst

[Yinan Wang]

Add cases for cbdma packed ring test.

Signed-off-by: Yinan Wang <yinan.wang@intel.com>
---
 .../virtio_event_idx_interrupt_test_plan.rst  | 77 ++++++++++++++++++-
 1 file changed, 75 insertions(+), 2 deletions(-)

diff --git a/test_plans/virtio_event_idx_interrupt_test_plan.rst b/test_plans/virtio_event_idx_interrupt_test_plan.rst
index eb26a13f..f30bfd6d 100644
--- a/test_plans/virtio_event_idx_interrupt_test_plan.rst
+++ b/test_plans/virtio_event_idx_interrupt_test_plan.rst
@@ -261,7 +261,7 @@ Test Case 6: Wake up packed ring virtio-net cores with event idx interrupt mode
 Test Case 7: Split ring virtio-pci driver reload test with CBDMA enabled
 ========================================================================
 
-1. Bind one nic port and one cbdma port to igb_uio, then launch the vhost sample by below commands::
+1. Bind one nic port and one cbdma channel to igb_uio, then launch the vhost sample by below commands::
 
     rm -rf vhost-net*
     ./testpmd -c 0xF0000000 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i --nb-cores=1 --txd=1024 --rxd=1024
@@ -299,7 +299,7 @@ Test Case 7: Split ring virtio-pci driver reload test with CBDMA enabled
 Test Case 8: Wake up split ring virtio-net cores with event idx interrupt mode and cbdma enabled 16 queues test
 ================================================================================================================
 
-1. Bind one nic port to igb_uio, then launch the vhost sample by below commands::
+1. Bind one nic port and 16 cbdma channels to igb_uio, then launch the vhost sample by below commands::
 
     rm -rf vhost-net*
     ./testpmd -l 1-17 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=64' -- -i --nb-cores=16 --txd=1024 --rxd=1024 --rxq=16 --txq=16
@@ -331,3 +331,76 @@ Test Case 8: Wake up split ring virtio-net cores with event idx interrupt mode a
     testpmd>start
     testpmd>stop
 
+Test Case 9: Packed ring virtio-pci driver reload test with CBDMA enabled
+=========================================================================
+
+1. Bind one nic port and one cbdma channel to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -c 0xF0000000 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on \
+     -vnc :12 -daemonize
+
+3. On VM1, set virtio device IP, send 10M packets from packet generator to nic then check virtio device can receive packets::
+
+    ifconfig [ens3] 1.1.1.2      # [ens3] is the name of virtio-net
+    tcpdump -i [ens3]
+
+4. Reload virtio-net driver by below cmds::
+
+    ifconfig [ens3] down
+    ./dpdk-devbind.py -u [00:03.0]   # [00:03.0] is the pci addr of virtio-net
+    ./dpdk-devbind.py -b virtio-pci [00:03.0]
+
+5. Check virtio device can receive packets again::
+
+    ifconfig [ens3] 1.1.1.2
+    tcpdump -i [ens3]
+
+6. Rerun step4 and step5 100 times to check event idx workable after driver reload.
+
+Test Case 10: Wake up packed ring virtio-net cores with event idx interrupt mode and cbdma enabled 16 queues test
+=================================================================================================================
+
+1. Bind one nic port and 16 cbdma channels to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -l 1-17 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=64' -- -i --nb-cores=16 --txd=1024 --rxd=1024 --rxq=16 --txq=16
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=16,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net,server -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce,queues=16 \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,mq=on,vectors=40,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on \
+     -vnc :12 -daemonize
+
+3. On VM1, give virtio device ip addr and enable vitio-net with 16 quques::
+
+    ifconfig [ens3] 1.1.1.2           # [ens3] is the name of virtio-net
+    ethtool -L [ens3] combined 16
+
+4. Send 10M different ip addr packets from packet generator to nic, check virtio-net interrupt times by below cmd in VM::
+
+    cat /proc/interrupts
+
+5. After two hours stress test, stop and restart testpmd, check each queue has new packets coming::
+
+    testpmd>stop
+    testpmd>start
+    testpmd>stop
+
-- 
2.25.1