Measurement of computer communication networks

Abstract

Measures, tools, and techniques applicable to the performance measurement of computer communication networks are described for technicians who procure computer services from a remote access network. Cost considerations are discussed as a major component of evaluation, and measurement and evaluation methodologies are surveyed. External measurement techniques that encompass both the intermediate user-network interface and the distant interface between user and the serving computer system are recommended. An 80-item bibliography concludes the report. (CH) * * via the ERIC Document Reproduction Service (EDRS). EDRS is not * * responsible for the quality of the original document. Reproductions * * supplied by EDRS are the best that can be-made from the original.

Small is Beautiful U.S. House Size, Resource Use, and the Environment

“…Designer-builder John Abrams of the South Mountain Company in West Tisbury, Massachusetts, USA describes three factors that are driving the popularity of large houses: "First, with less of a sense of community and public life in our culture, the home becomes a fortress which needs to contain everything we need, including multiple forms of entertainment, rather than basic shelter; second, the building industry has been selling 'big is better' and the message has been heard; and third, diminishing craft and design generosity has resulted in sterile homes-people mistakenly think that what's missing is grandeur: more space" (Abrams 1998).…”

“…(9.5-mm) thickness. 8 To convert square feet to square meters, multiply by 0.093. designing multiple uses into rooms, and utilizing often-wasted attic and low-roof space (Abrams 1998).…”

A methodology for interactive computer service measurement

“…A preferred definition is the elapsed time from the last keystroke made by the user until the first printing character output by the system is displayed at the user's terminal. 937 Several other valid alternatives have been suggested and studied [4].…”

“…This paper presents a framework for such external measurement and identification, including a multidimensional descriptive model which portrays the components of the levels and conditions considered to be important in the measurement methodology and a new tool which has been designed and implemented to collect the necessary data. This tool, the Network Measurement Machine (NMM), is part of a larger Network Measurement System (NMS), which includes a library of data analysis programs and can be used for a variety of measurement applications [4]. Tables I, II, and III, several categories of measures are described in the following sections.…”