Browse Prior Art Database

Benchmarking terminology for network interconnection devices (RFC1242)

IP.com Disclosure Number: IPCOM000002058D
Original Publication Date: 1991-Jul-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 11 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Bradner: AUTHOR

Abstract

This memo discusses and defines a number of terms that are used in describing performance benchmarking tests and the results of such tests. The terms defined in this memo will be used in additional memos to define specific benchmarking tests and the suggested format to be used in reporting the results of each of the tests. This memo is a product of the Benchmarking Methodology Working Group (BMWG) of the Internet Engineering Task Force (IETF).

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group S. Bradner, Editor

Request for Comments: 1242 Harvard University

July 1991

Benchmarking Terminology for Network Interconnection Devices

Status of this Memo

This memo provides information for the Internet community. It does

not specify an Internet standard. Distribution of this memo is

unlimited.

Abstract

This memo discusses and defines a number of terms that are used in

describing performance benchmarking tests and the results of such

tests. The terms defined in this memo will be used in additional

memos to define specific benchmarking tests and the suggested format

to be used in reporting the results of each of the tests. This memo

is a product of the Benchmarking Methodology Working Group (BMWG) of

the Internet Engineering Task Force (IETF).

1. Introduction

Vendors often engage in "specsmanship" in an attempt to give their

products a better position in the marketplace. This usually involves

much "smoke & mirrors" used to confuse the user. This memo and

follow-up memos attempt to define a specific set of terminology and

tests that vendors can use to measure and report the performance

characteristics of network devices. This will provide the user

comparable data from different vendors with which to evaluate these

devices.

2. Definition format

Term to be defined. (e.g., Latency)

Definition:

The specific definition for the term.

Discussion:

A brief discussion about the term, it's application

and any restrictions on measurement procedures.

Measurement units:

The units used to report measurements of this

term, if applicable.

Issues:

List of issues or conditions that effect this term.

See Also:

List of other terms that are relevant to the discussion

of this term.

3. Term definitions

3.1 Back-to-back

Definition:

Fixed length frames presented at a rate such that there

is the minimum legal separation for a given medium

between frames over a short to medium period of time,

starting from an idle state.

Discussion:

A growing number of devices on a network can produce

bursts of back-to-back frames. Remote disk servers

using protocols like NFS, remote disk backup systems

like rdump, and remote tape access systems can be

configured such that a single request can result in

a block of data being returned of as much as 64K octets.

Over networks like ethernet with a relatively small MTU

this results in many fragments to be transmitted. Since

fragment reassembly will only be attempted if all

fragment...