Using resampling techniques to compute confidence intervals for the harmonic mean of rate-based performance metrics

Shruti Patil, David J. Lilja

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Rate-based metrics such as floating point operations per second, instructions per cycle and so forth are commonly used to measure computer performance. In addition to the average or mean performance of the metric, indicating the precision of the mean using confidence intervals helps to make informed decisions and comparisons with the data. In this paper, we discuss the determination of confidence intervals for the harmonic mean of rate-based metrics using two statistical resampling techniques - Jackknife and Bootstrap. We show using Monte Carlo simulations that resampling indeed works as expected, and can be used for generating confidence intervals for harmonic mean.

Original languageEnglish (US)
Article number5394469
Pages (from-to)1-4
Number of pages4
JournalIEEE Computer Architecture Letters
Issue number1
StatePublished - Jan 2010

Bibliographical note

Funding Information:
This work was supported in part by the National Science Foundation grant no. CCF-0541162. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF. The authors also thank the University of Minnesota Statistical Consulting Service for their helpful insights.


  • Nonparametric statistics
  • Performance of Systems

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