https://bz.apache.org/bugzilla/show_bug.cgi?id=65892

            Bug ID: 65892
           Summary: HTML report: Improve performances of generation for
                    big JTL files
           Product: JMeter
           Version: 5.4.3
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Main
          Assignee: issues@jmeter.apache.org
          Reporter: p.moua...@ubik-ingenierie.com
  Target Milestone: JMETER_5.5

The time taken to generate the report increases importantly for big files.

For example for a file of 37 Gb, it takes 30 minutes to 1 hour to generate the
report on an average VM.

Ideas:

- Parallelization seems to be necessary to improve that.
- Switching from commons-maths DescriptiveStatistics to HDR Histogram for
percentiles calculation might be also a way to improve that.

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