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Method for Providing a Performance Index Using High Resolution Time Stamps

IP.com Disclosure Number: IPCOM000057274D
Original Publication Date: 1988-Apr-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Emrick, SL Rourke, DJ [+details]

Abstract

A Hardware Performance Index using high resolution timestamps and evaluating different instruction streams is described. In the past, it has been difficult to obtain a reasonable measure of the relative processing speed of members of the IBM Personal Computer (PC) family. It has been necessary to measure and compare large numbers of iterations of long instruction streams. This method relies on the low resolution (55 milliseconds) system clock. It is also dependent on the mix of instructions used in the general stream. The results are typically one general number which cannot easily be applied to specific programs or code pieces. For example, the Norton Utilities SI program generates a single number which represents the overall system performance index.