From this applet I got the following list of variables. Which of these do we want to focus on?
WEB100 Kernel Variables:
Nov 3, 2002
"... This draft describes extended performance statistics for TCP. They are designed to use TCP's ideal vantage point to diagnose performance problems in both the network and the application. If a network based application is performing poorly, TCP can determine if the bottleneck is in the sender, the receiver or the network itself. If the bottleneck is in the network, TCP can provide specific information about its nature. ..."
Index page that points to the program announcement doc in HTML, PDF, or TXT
Port 1434 MS-SQL Worm
Here's a report on the network worm this past weekend. It has pretty good references to other sites as well. I wonder if Abilene community was impacted by this?
"... The purpose of this program is to:
1) enable research and education at the forefront of science and engineering via the establishment of high performance (45mbits per second or greater) Internet connections to a national research network;
2) prepare the next generation of scientists, engineers, and other researchers, especially individuals in traditionally underserved groups, to use advanced networking in support of discovery, learning and innovation. ..."
The page with pointers to PDF and Text versions of the file.
"... SCAMPI is a two-and-a-half-year European project to develop a scaleable monitoring platform for the Internet. It also aims to promote the use of monitoring tools for improving services and technology. ..."
"... Fast long-distance networks (i.e., networks operating at 622 Mbit/s, 2.5 Gbit/s, or 10 Gbit/s and spanning several countries or states) were confined to network operators and ISPs until recently. They are now becoming a mainstream market. More and more researchers now routinely transfer between 10 GB and 1 TB of data over gigabit networks (e.g., users remotely involved in the BaBar experiment at SLAC or the LHC experiment at CERN). Application domains for such massive transfers include data-intensive Grids (e.g., in Particle Physics, Earth Observation, Bioinformatics, and Radio Astronomy), database mirroring for Web sites (e.g., in e-commerce), and push-based Web cache updates. .."
"... Steven Low and his group have developed a new FAST TCP stack that improves performance on high speed long RTT links. We report here on some measurements made with this stack as well as some related measurements with jumbo frames, and the standard TCP stack. ..."
"... Pipecleaner is a diagnostic utility that is used to determine whether you have a network connection to the Internet2 that will allow you to participate in ConferenceXP. It does this by sending and receiving multicast IP packets to a well known address and looking for responses from well known hosts on the Internet2. ..."
"... Technical Details
Pipecleaner runs as a Windows Service on your computer 7x24. It sends a small data packet (a UTF-8 string encapsulated in RTP over UDP; see RFC 1889) once per second to multicast IP address 220.127.116.11:5004 and a series of control packets (RTCP SDES, RR, and SR; see RFC 1889) to 18.104.22.168:5005. Pipecleaner Stoplight looks for similar signals sent from over the Internet2, including packets from well known hosts like Services.LearningWebServices.Com, Microsoft Research's ConferenceXP Server. ..."
:... Abstract: In this study we introduce NetBench, a benchmarking suite for network processors. NetBench contains a total of 9 applications that are representative of commercial applications for network processors. These applications are from all levels of packet processing; Small, low-level code fragments as well as large application level programs are included in the suite. (Update) ..."
This is from the CiteSeer service which does a good job of pointing from the original document to other papers that cite or reference this. - ghb
"... The purpose of this study is to evaluate and improve the performance andscalability of Linux, using NetBench as a workload. The effort described here is currently maintained by AndrewTheurer . This is an open project, and I encourage others to join my efforts. The tests conducted for this evaluation currently takeplace at IBM's Linux Technology Center. Check our status page for latest news. ..."
"... NetBench is a portable benchmark program that measures how well a file server handles file I/O requests from 32-bit Windows clients, which pelt the server with requests for network file operations. NetBench reports throughput and client response time measurements. To run NetBench, you need a file server, a PC running Windows NT/2000 or Windows XP (called the controller) to start and monitor the tests, and clients that are running Windows 95/98, Windows NT/2000, or Windows XP. ..."
"... Each operating WeatherStation measures round trip latency, packet loss, tcp throughput and an estimated max udp rate. The WeatherStations are periodically surveyed and the results recorded in these graphs. ..."
This page is linked to from Steven Senger's "Information Channels" page which has info about his work with end-to-end in their part of the NLM Viz Human Project at Stanford (SUMMIT). Down near the bottom of this page is the link to the Weather Stations and the link to monitors which displays the page linked to here.
"... The goal of the Albatross project is to better understand application behavior on wide-area networks. A recent technology trend is Cluster Computing, where high-speed clusters of workstations are themselves connected over lower-speed links. Cluster Computing raises a host of research issues such as fault tolerance, performance, and programmability.
The focus of Albatross is on programmability and performance. Cluster Computing is approached from the applications side. It is obvious that parallel applications that communicate heavily need a high-speed link to function properly. On the other side of the scale, parallel applications that hardly communicate at all will also work well over a slow link. Cluster Computing has both types of interconnect. In Albatross we try to find out which applications work, which do not, and if so, what can be done to make them work. Our current work is on wide-area programming with MPI and Java. ..."
This is the site referenced as the source of the "measurement methodology" in the GGF Tool Properties page.
"... This table contains mapping of some common network measurement tools to the network characteristics described in the GGF NMWG document. ..."
"... LISTEN carefully to the sound of the network, and you will hear the difference between congestion and the seamless flow of data.
So says a music professor who has applied his ear for subtle changes in pitch to the problem of delayed or dropped data on the Internet.
Chris Chafe, a composer, cellist and director of the Center for Computer Research in Music and Acoustics at Stanford University, has devised a system that uses sound to show minute lapses in network connections.
This musical detection service translates the behavior of data packets into a range of sounds worthy of John Cage: a packet that loses information along its route emits staccato hiccups. Delayed packets sound at a lower pitch than packets zipping along more quickly, which give a clear, high tone. ..."
ISP backbones stand up in grueling 30-day performance test.
By David Newman, Network World Global Test Alliance
Network World, 12/16/02
"... It's time to lay to rest the notion that ISPs can't deliver telephone-company-level reliability. The fact is, some routed IP network backbones now meet or exceed telco-grade performance. That's the key finding of a groundbreaking study of ISP backbone network performance conducted for Network World by Internet measurement experts Andrew Corlett and Robert Mandeville, along with Network Test, a Network World Global Test Alliance partner. ..."