NetPerf

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NetPerf

• 2003. 03. 18
• Kiwon Hong (kiwon77_at_iat.chonnam.ac.kr)
• Internet Application Technology Lab.

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Contents

• Introduction
• Features
• Setup
• Configuration
• Result
• Reference sites

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1. Introduction

• supported by the IND Networking Performance Team
• Netperf is designed around the basic
  client-server model

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2. Features

• To measure various aspects of networking
  performance
• Bulk data transfer performance
• Request/response performance
• can measure of networking performance of TCP and
  UDP
• various command line option

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3. Installation

• Download
• http//www.netperf.org
• Setup
• OS Linux
• File name
• Server netserver
• Client netperf( only copied)
• Compile
• command make install
• be compiled and copied into /opt/netperf/

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4. Configuration

• File edit
• Add this line to the /etc/services file
• netperf 12865/tcp
• Add this line to the /etc/xinetd.conf file
• Service netperf
• socket_type stream
• protocol tcp
• wait no
• user root
• server /opt/netperf/netserver
• server_arg netserver

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5. User manual 1/2

• TCP Request/Response Performance
• ./netperf H remotehost t TCP_RR
• Option
• -r sizespec set the request or response sizes
• -l value set the test duration based on value
• -s sizespec set the local send and receive
  socket buffer sizes
• -S sizespec set the remote system send and
  receive socket buffer sizes
• -D set the TCP_NODELAY option to true on both
  systems

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5. User manual 2/2

• UDP Request/Response Performance
• ./netperf H remotehost t UDP_RR
• Option
• -r sizespec set the request or response sizes
• -l value set the test duration based on value
• -s sizespec set the local send and receive
  socket buffer sizes
• -S sizespec set the remote system send and
  receive socket buffer sizes
• -D set the TCP_NODELAY option to true on both
  systems

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6. Test environment 1/2

• System spec Client
• CPU Pentium4 1.5G
• OS Linux 7.1
• NIC Realtek RTL8139
• System spec Server
• CPU Pentium 4 2.4G
• OS Linux 7.3
• NIC Realtek RTL8139

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6. Test environment 2/2

• Network Topology

Throughput, RTT
Router
Switching Hub
NetPerf Client
NetPerf Server
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7. Result 1/4

• TCP stream performance

send socket buffer size on the local system
receive socket buffer size on the remote system
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7. Result 2/4

• UDP stream performance

Failed send calls(ENOBUFS)
message size
send performance
successful calls to send
receive socket size on remote
successful calls to receive
receive performance
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7. Result 3/4

• TCP Request/Response Performance

local send socket size
remote send socket size
local receive socket size
remote send socket size
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7. Result 4/4

• UDP Request/Response Performance

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8. Reference sites

• http//www.netperf.org/netperf/NetperfNew.html