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<html><head><title>Linux FTP Server Performance Bakeoff</title></head><body><h1>Linux FTP Server Performance Bakeoff</h1><h2>ftp.cdrom.com: the current champion</h2><i>How</i> does ftp.cdrom.com do it? Their ftp server is <a href="http://www.cdrom.com/press/wcarchive_milestone.phtml">said to be capable of handling ten thousand simultaneous downloads</a> -- with a <a href="ftp://ftp.cdrom.com/archive-info/configuration">single CPU and network interface</a>.<p>Their secret? FreeBSD and a custom ftp server daemon. It's timethat Linux and its bevy of ftp servers stood up to this challenge.<h2>The Bakeoff</h2>I plan to compare performance of FTP daemons for Linux in a kindof performance bake-off sometime around March 2001. Each daemon willbe subjected to a torture test to see how many simultaneousdialup downloads it can support. The results will be postedpublicly, and I'll send the author of the winning FTP daemona care package of homemade cookies :-) There will be separatecategories for free and for commercial FTP daemons, andfor "Document Tree Smaller than System RAM" and "Document TreeLarger than System RAM", so I'll be baking several batches of cookies.<h2>Mailing List</h2>If you're interested in participating, please join <a href="http://onelist.com/community/ftpbench">the mailing list</a>and/or pipe up on <a href="news:comp.benchmarks">comp.benchmarks</a>.<h2>Getting Your Daemon Ready</h2>You can get ready for the bakeoff by testing your daemon yourselfto see how many users it can support, eliminating bottlenecks, loweringmemory consumption, and posting instructions on your daemon's support page for how to configure it and the OS to support, say, 1000 simultaneous users.The tests will probably be run with Red Hat Linux 6.2, hopefullyusing the 2.4 kernel.<p>An early version of the load generator that will be used isavailable now at <a href="index.html">http://www.kegel.com/dkftpbench/</a>You can use it now to stress-test your daemon. The load generatorwill be more interesting by March, but it's usable as is now.<h2>Preliminary Results</h2><a href="http://www.kegel.com/dkftpbench/results.html">Preliminary results</a>with this load generator with a very small document treeshow ncftpd beating out wu-ftpd and proftpd, and betaftpd whipping them all.Betaftpd won't do as well on the large document tree, though, sinceit will slow to a crawl as soon as it has to hit the disk.<p><hr><i>Last Change July 26th, 2000; copyright Dan Kegel</i></body></html>⌨️ 快捷键说明
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