network performance open source toolkit using netperf tcptrace, nist net, and ssfnet

[...]... effective network performance toolkit PA R T One Network Performance Primer CHAPTER 1 Defining Network Performance Before you dive into detailed discussions of network performance tools, it is a good idea to first understand what network performance is, and how it can be measured This chapter defines network performance, describes the elements involved in measuring it, and shows techniques many network performance. .. along with a standard way to solve slow network performance The open source network performance tools presented in this book can help the network administrator determine the status of the network, and identify the areas of the network that could be improved to increase performance Often, network bottlenecks can be found, and simply reallocating the resources on a network can greatly improve performance, ... section presents a network performance primer, showing some of the basic elements that affect network performance, and explaining how to use some simple Open Source tools to monitor them Chapter 1, “Defining Network Performance, ” describes the techniques used by the Open Source tools to monitor network performance Understanding how the tools work makes it easier to understand the output, and to determine... 211 212 214 215 Contents Chapter 12 Comparing Network Performance Tools Tools for Testing the Network Bulk Data Transfers Using Pathrate to Find the Network Bottleneck Using netperf to See Actual Network Bandwidth Using ntop to Analyze Network Traffic Using NetLogger to Analyze Host Functions Request/Response Traffic Using netperf to Simulate HTTP Traffic Using tcptrace to Watch HTTP Sessions Analyzing... production network to help identify the cause of network performance issues The text explains how to install and configure each tool, and describes how to use the tool in the production network Introduction xxiii Because network applications go hand in hand with networks, the secondary focus of the book is to help in the analysis of network application performance Both network application developers and network. .. Application Performance Tools,” wraps up the final section by showing how to model production networks, and how to use the emulation and simulation tools presented to predict network application performance Who Should Read This Book The primary focus of this book is to help network administrators and technicians monitor and analyze network performance Often it is not easy to determine what causes network performance. .. The NIST Net Kernel Module 268 268 269 269 270 270 271 271 271 272 273 273 274 275 275 277 277 279 279 280 280 281 281 281 282 282 282 Contents The NIST Net Configuration Tools The NIST Net Optional Tools mungebox nistspy 285 286 287 287 Downloading and Installing NIST Net 288 Downloading NIST Net Compiling NIST Net Getting the Required Files Compiling the Source Code Loading NIST Net Using NIST Net Using. .. graphical Web pages showing network utilization by each device on the network This helps you determine which devices are consuming the most resources on the network Chapter 12, “Comparing Network Performance Tools,” wraps up the network performance tool section by presenting a sample network environment, and showing how each tool can be used to monitor network performance on the sample network xxi xxii Introduction... simple network principles that can be measured, monitored, and controlled by the network administrator with simple—often free—software Most network performance tools use a combination of five separate elements to measure network performance: ■ ■ Availability ■ ■ Response time ■ ■ Network utilization ■ ■ Network throughput ■ ■ Network bandwidth capacity This section describes each of these elements, and. .. perform in the production network Chapter 14, “dummynet,” describes the dummynet application, which is available on FreeBSD systems to emulate network behavior using a FreeBSD host This enables a single FreeBSD host to be used within a test network to emulate the network delay, bandwidth limitations, and packet loss of a full production network Chapter 15, NIST Net, discusses the NIST Net application, . alt=""