diff --git a/test_plans/vhost_cbdma_test_plan.rst b/test_plans/vhost_cbdma_test_plan.rst
index c827adaa..ce0fdc3e 100644
--- a/test_plans/vhost_cbdma_test_plan.rst
+++ b/test_plans/vhost_cbdma_test_plan.rst
@@ -73,7 +73,7 @@ TG --> NIC --> Vhost --> Virtio--> Vhost --> NIC --> TG
 
 1. Bind one cbdma port and one nic port to igb_uio, then launch vhost by below command::
 
-    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 2-3 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/s0,queues=1,dmas=[txq0@80:04.0],dmathr=1024' \
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 2-3 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/s0,queues=1,dmas=[txq0@80:01.0],dmathr=1024' \
     -- -i --nb-cores=1 --txd=1024 --rxd=1024
     >set fwd mac
     >start
@@ -145,7 +145,7 @@ Test Case2: Split ring dynamic queue number test for DMA-accelerated vhost Tx op
     >set fwd mac
     >start
 
-3. Send packets with packet size [64,1518] from packet generator with random ip, check perforamnce can get target.
+3. Send imix packets from packet generator with random ip, check perforamnce can get target.
 
 4. Stop vhost port, check vhost RX and TX direction both exist packtes in two queues from vhost log.
 
@@ -355,3 +355,64 @@ Test Case5: Packed ring dynamic queue number test for DMA-accelerated vhost Tx o
      >start
 
 11. Stop vhost port, check vhost RX and TX direction both exist packets in two queues from vhost log.
+
+Test Case 6: Compare PVP split ring performance between CPU copy, CBDMA copy and Sync copy
+==========================================================================================
+
+CPU copy means vhost enqueue w/o cbdma channel; CBDMA copy needs vhost enqueue with cbdma channel
+using parameter '-dmas'; Sync copy needs vhost enqueue with cbdma channel, but threshold ( can be
+adjusted by change value of f.async_threshold in dpdk code) is larger than forwarding packet length.
+
+1. Bind one cbdma port and one nic port which on same numa to igb_uio, then launch vhost by below command::
+
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 2-3 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/s0,queues=1,client=1,dmas=[txq0@00:01.0],dmathr=1024' \
+    -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    >set fwd mac
+    >start
+
+2. Launch virtio-user with inorder mergeable path::
+
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 5-6 --no-pci --file-prefix=virtio \
+    --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/s0,mrg_rxbuf=1,in_order=1,queues=1,server=1 \
+    -- -i --tx-offloads=0x0 --enable-hw-vlan-strip --nb-cores=1 --txd=1024 --rxd=1024
+    >set fwd mac
+    >start
+
+3. Send packets with 64b and 1518b seperately from packet generator, record the throughput as sync copy throughput for 64b and cbdma copy for 1518b::
+
+    testpmd>show port stats all
+
+4.Quit vhost side, relaunch with below cmd::
+
+ ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 2-3 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/s0,queues=1,client=1,dmas=[txq0@00:01.0],dmathr=2000' \
+    -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    >set fwd mac
+    >start
+
+5. Send packets with 1518b from packet generator, record the throughput as sync copy throughput for 1518b::
+
+    testpmd>show port stats all
+
+6. Quit two testpmd, relaunch vhost by below command::
+
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 2-3 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/s0,queues=1' \
+    -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    >set fwd mac
+    >start
+
+7. Launch virtio-user with inorder mergeable path::
+
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -n 4 -l 5-6 --no-pci --file-prefix=virtio \
+    --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/s0,mrg_rxbuf=1,in_order=1,queues=1 \
+    -- -i --tx-offloads=0x0 --enable-hw-vlan-strip --nb-cores=1 --txd=1024 --rxd=1024
+    >set fwd mac
+    >start
+
+8. Send packets with 64b from packet generator, record the throughput as cpu copy for 64b::
+
+    testpmd>show port stats all
+
+9. Check performance can meet below requirement::
+
+   (1)CPU copy vs. sync copy delta < 10% for 64B packet size
+   (2)CBDMA copy vs sync copy delta > 5% for 1518 packet size
