Khi báo cáo thống kê lưu lượng UDP từ netperf, bạn nên chăm sóc để bao gồm cả việc gửi và nhận số liệu thống trang chủ của chương trình netperf có thể được tìm thấy tại http://www. . Nó chứa thông tin về chương trình netperf | netperf 63 It is important to remember that since UDP does not guarantee packet delivery the data statistics for received packets may be incorrect. When reporting UDP traffic statistics from netperf you should take care to include both the sending and receiving statistics. Downloading and Installing netperf The home Web page for the netperf program can be found at http www. . It contains information about the netperf program sample network performance statistics uploaded by users and of course a download area where you can obtain the program. Downloading netperf The main download area for netperf is on an FTP server sponsored by Hewlett-Packard on the server . The netperf distributions can be found at the URL ftp dist networking benchmarks netperf At the time of this writing the most current production version of netperf available on the Web site is netperf version patch level 2. This is located in the file . After downloading the distribution file you must uncompress and expand it into a working directory. Depending on your Unix system this can be done either in one step by using the -z option of the tar command or in two steps by using the gunzip command to uncompress the distribution file then using the standard tar expanding command tar -zxvf The tar expansion creates the directory containing all of the files necessary to compile the netperf application along with some script files that make using netperf easier. Installing the netperf Package The netperf installation files contain a makefile that must be modified to fit your Unix environment before the application can be compiled. There are several compiler options that must be set depending on which functions you want to include in the installed netperf application. Table shows a list of the features that can be compiled into the application. 64 Chapter 4 Table The netperf Compiler Features COMPILER .
