Calculating contention percentages

You can use a formula to calculate the percentage of global contention and false contention in your data sharing environment.

Use the following calculations:
  • Total contention is the number of deferred requests ( B ) divided by the total number of requests ( A ), multiplied by 100. So, for this example:
    (621 / 162000) × 100 = .387%

    This indicates that the global contention rate is approximately 0.39 % (a good figure).

  • False contention is the number of false contentions ( C ) divided by the total number of requests ( A ) multiplied by 100. For this example:
    (212 / 162000) × 100 = 0.13%

    Thus, the rate of false contention is 0.13 % (a very good figure).