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From bugzi...@apache.org
Subject [Bug 62486] New: Report Statics Table showing incorrect 90th pct
Date Mon, 25 Jun 2018 05:06:22 GMT
https://bz.apache.org/bugzilla/show_bug.cgi?id=62486

            Bug ID: 62486
           Summary: Report Statics Table showing incorrect 90th pct
           Product: JMeter
           Version: 4.0
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Main
          Assignee: issues@jmeter.apache.org
          Reporter: philip.webb@iag.com.au
  Target Milestone: ---

The 90th percentile being reported in the Statistics Table can be different to
the 90th percentile shown at the 90th percentile on the "Response Times
Percentiles" graph (which is be viewed by hovering with the mouse at the 90.0
line).

I have calculated the 90th percentile independently.  The graph is correct, the
value on the Statistics table is wrong.

Appears to happen on larger samples (I noticed it on a label with sample count
of > 200,000 )

Just a guess - but may be due to higher value responses being 'cut off' within
an internal array during the calculation (I made the same mistake initially)..  

I can attach a sample CSV results file, if required (I will need to slightly
doctor it for business reasons).

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