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Posted to jmeter-dev@jakarta.apache.org by bu...@apache.org on 2006/10/18 22:07:05 UTC
DO NOT REPLY [Bug 40791] New: - Calculator used by Summary Report is inaccurate
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http://issues.apache.org/bugzilla/show_bug.cgi?id=40791
Summary: Calculator used by Summary Report is inaccurate
Product: JMeter
Version: 2.2
Platform: Other
OS/Version: other
Status: NEW
Severity: normal
Priority: P2
Component: Main
AssignedTo: jmeter-dev@jakarta.apache.org
ReportedBy: ruben.laguna@gmail.com
Calculator.java used by SummaryReport uses the startTime of the first sample as
start time for it's own calculations. First sample to arrive to summary report
is not always the first sample in time because some operations may have started
earlier and will arrive later because the sample come from a jmeter-server (in
distributed testing with batch mode this is noticiable) or because the time to
complete the sample locally is high.
Furthermore Calculator (and Summary Report) take the endTime of the last sample
to arrive as the endTime for all SummaryReport calculations. This is worse
because in distributed testing the time is not always synchonized to the
millisecond and the samples come in batches.
This produces inaccuracy in the calculations. I'll attach a patch to correct
this behavior. Taking the min of samples startTime and the max of the samples
endTime
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DO NOT REPLY [Bug 40791] - Calculator used by Summary Report is inaccurate
Posted by bu...@apache.org.
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG�
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=40791>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND�
INSERTED IN THE BUG DATABASE.
http://issues.apache.org/bugzilla/show_bug.cgi?id=40791
------- Additional Comments From ruben.laguna@gmail.com 2006-10-18 13:10 -------
Created an attachment (id=19027)
--> (http://issues.apache.org/bugzilla/attachment.cgi?id=19027&action=view)
Calculator.java patch to take min and max of startTimes and endTimes into
account
Changes the way SummaryReport calculates the thoughput taking into account the
min and max of startTimes and endTimes. Previous version relies on samples
coming in order to accurately make the calculations. This assumption is false
in distributed testing (very false in batch mode!)
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