Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-85014

Analyze error distribution of operations involving storage engine and compare it with some other operations

    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • QO 2022-09-05, QO 2022-09-19, QO 2022-10-03

      Analyse error distributions for ABT nodes representing storage engine (WT) operations:

      • Index Seek
      • Seek
      • Scan

      And some non-disk operations, e.g. filter.

      1. Run an experiment with about 40 queries for every run
      2. Calculate observational statistics of execution time parameter: median, mean, standard deviation, correlation with number of processed rows
      3. Check the hypothesis that the distribution of execution time values is close to normal distribution using Kolmogorov-Smirnov test (scipy.stats.kstest). One way is to calculate z-scores= (value - media)/stddev and compare with standard distribution.
      4. Create a table with results.

            Assignee:
            ruoxin.xu@mongodb.com Ruoxin Xu
            Reporter:
            alexander.ignatyev@mongodb.com Alexander Ignatyev
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

              Created:
              Updated:
              Resolved: