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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 52333] New: Consider how to reduce overhead in calculating SampleResult#nanoTimeOffset
Date Wed, 14 Dec 2011 17:57:13 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=52333

             Bug #: 52333
           Summary: Consider how to reduce overhead in calculating
                    SampleResult#nanoTimeOffset
           Product: JMeter
           Version: 2.5.1
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Main
        AssignedTo: issues@jmeter.apache.org
        ReportedBy: sebb@apache.org
    Classification: Unclassified


When using System.nanoTime(), the SampleResult ctors calculate the current
offset from currentTimeMillis().

This was previously done just once when the class was initialised, but this was
found to cause problems because of drift - see Bug 51855.

Consider using a background thread to calculate the offset, rather than
calculating it for each sample - this should reduce the overhead for high
sample rates. So long as the time between refreshes is kept reasonably low,
drift should not be sufficient to cause an issue.

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