Measurement and analysis of instruction use in the VAX-11/780

  • Authors:
  • Douglas W. Clark;Henry M. Levy

  • Affiliations:
  • Systems Architecture Group, Digital Equipment Corporation, 1925 Andover Street, Tewksbury, Mass.;Systems Architecture Group, Digital Equipment Corporation, 1925 Andover Street, Tewksbury, Mass.

  • Venue:
  • ISCA '82 Proceedings of the 9th annual symposium on Computer Architecture
  • Year:
  • 1982

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Abstract

This paper reports measurements of instruction set use on the VAX-11/780 computer. A hardware monitor was used to measure the frequency and time taken by each VAX instruction. Data from benchmark programs, a compiler, a linker, and a synthetic timesharing workload are reported. Results show that although some programs rely on a small set of instructions, different applications use the instruction set in different ways.