thru: measures throughput between guest vm and host using fifo/tcp/udp/vsock

Setup

First, create a FIFO pair in /var/lib/test using the setup_fifo.sh script:

you@host:~/src/thru # ./setup_fifo.sh

Make sure that the vsock kernel module is loaded:

you@host:~/src/thru # modprobe vsock

Then start a guest specifying vsock cid and exposing the FIFO pair as virtserialport:

you@host:~/src/thru # qemu-system-x86_64 \
-name guest2 --uuid 7edfdf4a-cb9e-11e8-b38a-173b58342476 \
-m 4096 -boot d -enable-kvm -smp 3 -net nic -net user -hda $HOME/vm/guest2.img \
-fsdev local,id=host,path=$HOME,security_model=mapped \
-device virtio-9p-pci,fsdev=host,mount_tag=host \
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 \
-chardev pipe,id=charchannel1,path=/var/lib/test/fifo0 \
-device virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel1,id=channel1,name=fifo0 \
-device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3

How to Use

To measure vsock throughput from guest to host start ./thru vsock-listen on the host:

you@host:~/src/thru # ./thru vsock-listen
local CID: 2

and then run ./thru vsock on the guest:

you@guest:~/src/thru # ./thru vsock -n 1000000
local CID: 3
965.652985 MB/s

To measure throughput from host to guest start ./thru vsock-listen on the guest:

you@guest:~/src/thru # ./thru vsock-listen
local CID: 3

and then run ./thru vsock on the host:

you@host:~/src/thru # ./thru vsock -c 3 -n 1000000
local CID: 2
1183.508784 MB/s

Likewise for FIFO, TCP and UDP, e.g.:

you@host:~/src/thru$ ./thru fifo-listen

you@guest:~/src/thru$ ./thru fifo -n 1000000
3440.153267 MB/s