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sesiuni:virtualization-networking:session6 [2013/06/26 04:27] freescale |
sesiuni:virtualization-networking:session6 [2013/06/26 07:14] freescale |
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| = Topology = | = Topology = | ||
| {{ :sesiuni:virtualization-networking:netperf_setup.png |}} | {{ :sesiuni:virtualization-networking:netperf_setup.png |}} | ||
| + | |||
| + | = Slides = | ||
| + | {{:sesiuni:virtualization-networking:session6_network_benchmarking.pdf|}} | ||
| = Setup = | = Setup = | ||
| Line 54: | Line 57: | ||
| netperf -H 192.168.0.2 -t TCP_MAERTS -cC | netperf -H 192.168.0.2 -t TCP_MAERTS -cC | ||
| </code> | </code> | ||
| + | Find out more about **netperf** at [[http://www.netperf.org/netperf/training/Netperf.html]] | ||
| == Speedtest.net == | == Speedtest.net == | ||
| Measure bandwidth and delay on links towards California and Spain | Measure bandwidth and delay on links towards California and Spain | ||
| Line 100: | Line 103: | ||
| ip link sh dev br0 | ip link sh dev br0 | ||
| </code> | </code> | ||
| + | |||
| + | Display the offloading capabilities of the NICs | ||
| + | <code> | ||
| + | ethtool -k br0 | ||
| + | </code> | ||
| + | <code> | ||
| + | ethtool -k eth0 | ||
| + | </code> | ||
| + | |||
| == UDP == | == UDP == | ||
| Measure the UDP bandwidth using the default send size (MTU). Display the UDP statistics before and after running the test for the host interface. | Measure the UDP bandwidth using the default send size (MTU). Display the UDP statistics before and after running the test for the host interface. | ||
| Line 167: | Line 179: | ||
| = Traffic control = | = Traffic control = | ||
| - | On the VM, start **iperf_server.sh**. On the client, run **iperf_client.sh** | + | On the VM, start **iperf_server.sh**. On the client, run **iperf_client.sh**. Inspect its contents |
| <code> | <code> | ||
| ./iperf_server.sh | ./iperf_server.sh | ||
| </code> | </code> | ||
| <code> | <code> | ||
| + | cat iperf_client.sh | ||
| ./iperf_client.sh | ./iperf_client.sh | ||
| + | </code> | ||
| + | What are the packet loss rates? How does it impact the VoIP and video calls? | ||
| + | |||
| + | Let us apply Quality of Service. Define the traffic classes on the client side. | ||
| + | <code> | ||
| + | tc qdisc del dev br0 root | ||
| + | tc qdisc add dev br0 root handle 1: htb | ||
| + | tc class add dev br0 parent 1: classid 1:1 htb rate 1mbit burst 128k | ||
| + | tc class add dev br0 parent 1: classid 1:2 htb rate 40mbit burst 128k | ||
| + | tc class add dev br0 parent 1: classid 1:3 htb rate 5mbit burst 128k | ||
| + | tc class add dev br0 parent 1: classid 1:4 htb rate 3mbit burst 128k | ||
| + | </code> | ||
| + | Then classify the traffic. | ||
| + | <code> | ||
| + | tc filter add dev br0 protocol ip parent 1: prio 1 u32 match ip dport 8000 0xffff flowid 1:1 | ||
| + | tc filter add dev br0 protocol ip parent 1: prio 1 u32 match ip dport 6000 0xffff flowid 1:2 | ||
| + | tc filter add dev br0 protocol ip parent 1: prio 1 u32 match ip dport 21 0xffff flowid 1:3 | ||
| + | tc filter add dev br0 protocol ip parent 1: prio 1 u32 match ip dport 80 0xffff flowid 1:4 | ||
| </code> | </code> | ||
| + | Run the iperf server and client scripts again. Is the packet loss reasonable? | ||