QA:Testcase Virtualization Multiple Nics Stress

Description

This test is intended to do Multiple Nics Stress test

How to test

1. determine the test time: testtime
2. boot the virtual machine with three different modles of virtual nics: 8139,virtio,e1000

   qemu-kvm -net nic,model=rtl8139... -net tap -net nic,model=e1000,... -net tap...... -net nic,model=virtio,...... -net tap...... ...

3. Adjust the arp policy: use the dedicated interface hw addr to announce and response the arp packet

   echo 2 > /proc/sys/net/ipv4/conf/default/arp_ignore

   echo 2 > /proc/sys/net/ipv4/conf/default/arp_announce

4. Set the max MTU for each nics

   ifconfig eth0 mtu 1500 ( for rtl8139 )

   ifconfig eth1 mtu 16110 ( for e1000 )

   ifconfig eth2 mtu 65535 ( for virtio )

5. determine the guest ip address: ip1 ip2 ip3
6. In the host, parallel flood ping each nics through the following commands and last for testtime seconds.

   ping -f ip1 -s {size from 0 to 1500}

   ping -f ip2 -s {size from 0 to 16110}

   ping -f ip3 -s {size form 0 to 65507}

7. ping each nics to find whether it still work, the packet loss should be zero.

   ping -c 10 ip1

   ping -c 10 ip2

   ping -c 10 ip3

Expected Results

1. the packet loss should be zero when ping each nics