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Feb 19, 2023 245 likes •400 views

Chair of Network Architectures and Services Department of Informatics Technical University of Munich Mininet Performance Evaluation and Optimization Intermediate talk for the Bachelors Thesis by Stefan Lachnit advised by Benedikt Jaeger,

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Chair of Network Architectures and Services Department of Informatics Technical University of Munich

Mininet Performance Evaluation and Optimization

Intermediate talk for the Bachelor’s Thesis by

Stefan Lachnit

advised by Benedikt Jaeger, Max Helm, Sebastian Gallenmüller Monday 16th December, 2019 Chair of Network Architectures and Services Department of Informatics Technical University of Munich

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Agenda

1. Motivation
2. Related Work
3. Benchmark Toolchain
4. Example Benchmark: Impact of IPv6 on IPv4 measurements
5. Future Work

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Motivation

Mininet:

Network emulation tool (multiple hosts and switches on one server)
OpenFlow based virtual switches
Uses Linux network namespaces
Reproducible and portable network experiments

Goals:

Analyze performance and resource usage
Detect performance bottlenecks
Find measures to optimize the performance of Mininet

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SLIDE 4

Related Work

Handigol Nikhil et al.

Mininet Performance Fi-

delity Benchmarks [4] P . Isaia et al.

Perfor-

mance benchmarking of SDN experimental plat- form [2]

D. Muelas et al. - Assess-

ing the Limits of Mininet- Based Environments for Network Experimentation [3] Ping Data (RTT, Packet loss, etc. )

Bandwidth Measurement
CPU usage, RAM usage
Multiple network topolo-

gies

Analyse

performance Bottlenecks when scal- ing number of network elements

Comparison of different

hardware hosts

Hardware

Optimizations (Core isolation, CPU pin- ning)

Comparison to real net-

work

Stefan Lachnit — Mininet Performance Evaluation and Optimization

SLIDE 5

Benchmark Toolchain

Builds different network topologies using Mininet and scale the number of network elements

Line Topology

host1 switch1 switchn host2

Star Topology

host1 host2 hostn

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Benchmark Toolchain

Runs automated tests on the emulated network

Ping (one to one, simultaneous)
Iperf (TCP

, UDP) Records performance metrics

CPU usage
RAM usage
Cache misses
Number of packets at the OpenFlow controller
Network startup/teardown time

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Results: Impact of IPv6 on IPv4 measurements

Setup

Intel Xeon E31230 (4 cores/ 8 threads); 16 GB RAM
Debian Buster (Kernel 4.19.0-6-amd64)
Topology: Line Topology

10.0.0.1 switch1 switchn 10.0.0.2

Tests
Ping: 100 packets over 5 seconds
IPerf: 100 Mbit/s UDP traffic (512 byte packets) for 5 seconds
Presented performance metrics
CPU usage
Packets at the OpenFlow controller

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Results: Impact of IPv6 on IPv4 measurements

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 1,000 2,000 3,000 4,000 number of switches ping time (in ms)

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Results: Impact of IPv6 on IPv4 measurements

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 1,000 2,000 3,000 4,000 number of switches ping time (in ms) 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 5,000 10,000 15,000 20,000 number of switches packets at the controller IPv4 IPv6 ARP

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Results: Impact of IPv6 on IPv4 measurements

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 0.1 0.2 0.3 0.4 number of switches CPU usage IPv6 enabled IPv6 disabled

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Results: Impact of IPv6 on IPv4 measurements

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 0.1 0.2 0.3 0.4 number of switches CPU usage IPv6 enabled IPv6 disabled 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 0.1 0.2 0.3 0.4 0.5 0.6 number of switches ping time (in ms) IPv6 enabled IPv6 disabled

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Results: Impact of IPv6 on IPv4 measurements

Interfaces of virtual switches get IPv6 address through SLAAC
NDP packets (router solicitation, neighbor solicitation) are sent by these interfaces
Every time a multicast NDP packet reaches a switch it is sent to the controller

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Future Work

Analyze the effect of disabling hardware features (e.g. SMT) [1]
Test effects of core isolation and CPU pinning
Record traffic for additional analysis
Test other traffic generator (D-ITG)

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SLIDE 14

Bibliography

[1]

S. Gallenmüller, J. Naab, I. Adam, and G. Carle.

5g qos: Impact of security functions on latency. ArXiv, abs/1909.08397, 2019. [2] P . Isaia and L. Guan. Performance benchmarking of sdn experimental platforms. In 2016 IEEE NetSoft Conference and Workshops (NetSoft), pages 116–120, June 2016. [3]

D. Muelas, J. Ramos, and J. E. L. d. Vergara.

Assessing the limits of mininet-based environments for network experimentation. IEEE Network, 32(6):168–176, November 2018. [4]

H. Nikhil et al.

Mininet performance fidelity benchmarks. October 2012.

Tech. Rep.

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