Author: sebb
Date: Fri Mar 7 07:00:08 2008
New Revision: 634703
URL: http://svn.apache.org/viewvc?rev=634703&view=rev
Log:
Update glossary for median and percentile; link to it from Aggregate Report
Modified:
jakarta/jmeter/trunk/xdocs/usermanual/component_reference.xml
jakarta/jmeter/trunk/xdocs/usermanual/glossary.xml
Modified: jakarta/jmeter/trunk/xdocs/usermanual/component_reference.xml
URL:
http://svn.apache.org/viewvc/jakarta/jmeter/trunk/xdocs/usermanual/component_reference.xml?rev=634703&r1=634702&r2=634703&view=diff
==============================================================================
--- jakarta/jmeter/trunk/xdocs/usermanual/component_reference.xml (original)
+++ jakarta/jmeter/trunk/xdocs/usermanual/component_reference.xml Fri Mar 7
07:00:08 2008
@@ -1862,17 +1862,18 @@
the Aggregate Report.
</p>
<note>
-Calculation of the Median and 90% Line values requires a lot of memory as
details of every Sample have to be saved.
+Calculation of the Median and 90% Line (90<sup>th</sup> <a
href="glossary.html#Percentile">percentile</a>) values requires a lot of memory
as details of every Sample have to be saved.
See the <complink name="Summary Report"/> for a similar Listener that does not
need so much memory.
</note>
<ul>
<li>Label - The label of the sample.</li>
<li># Samples - The number of samples for the URL</li>
<li>Average - The average time of a set of results</li>
-<li>Median - The median is the time in the middle of a set of results.</li>
-<li>90% Line - the maximum time taken for the fastest 90% of the samples. #
-The remaining samples took longer than this.</li>
-<li>Min - The lowest time for the samples of the given URL</li>
+<li>Median - The <a href="glossary.html#Median">median</a> is the time in the
middle of a set of results.
+50% of the samples took less than this time; the remainder took at least as
long.</li>
+<li>90% Line - 90% of the samples took less than this time. #
+The remaining samples at least as long as this. (90<sup>th</sup> <a
href="glossary.html#Percentile">percentile</a>)</li>
+<li>Min - The shortest time for the samples of the given URL</li>
<li>Max - The longest time for the samples of the given URL</li>
<li>Error % - Percent of requests with errors</li>
<li>Throughput - Throughput measured in requests per second/minute/hour</li>
Modified: jakarta/jmeter/trunk/xdocs/usermanual/glossary.xml
URL:
http://svn.apache.org/viewvc/jakarta/jmeter/trunk/xdocs/usermanual/glossary.xml?rev=634703&r1=634702&r2=634703&view=diff
==============================================================================
--- jakarta/jmeter/trunk/xdocs/usermanual/glossary.xml (original)
+++ jakarta/jmeter/trunk/xdocs/usermanual/glossary.xml Fri Mar 7 07:00:08 2008
@@ -30,7 +30,7 @@
<section name="§-num;. Glossary" anchor="glossary">
<p>
-<b>Latency</b> - JMeter measures the latency from just before sending the
request to
+<a name="Latency"><b>Latency</b></a>. JMeter measures the latency from just
before sending the request to
just after the first response has been received. Thus the time
includes all the processing needed to assemble the request as well as
assembling the response, which in general will be longer than one
@@ -41,7 +41,23 @@
</p>
<p>
-<b>Throughput</b> is calculated as requests/unit of time.
+<a name="Median"><b>Median</b></a> is a number which divides the samples into
two equal halves.
+Half of the samples are smaller than the median, and half are larger.
+[Some samples may equal the median.]
+This is a standard statistical measure.
+See, for example: <a href="http://en.wikipedia.org/wiki/Median";>Median</a>
entry at Wikipedia.
+The Median is the same as the 50<sup>th</sup> Percentile
+</p>
+
+<p>
+<a name="Percentile"><b>90% Line (90<sup>th</sup> Percentile)</b></a> is the
value below which 90% of the samples fall.
+The remaining samples too at least as long as the value.
+This is a standard statistical measure.
+See, for example: <a
href="http://en.wikipedia.org/wiki/Percentile";>Percentile</a> entry at
Wikipedia.
+</p>
+
+<p>
+<a name="Throughput"><b>Throughput</b></a> is calculated as requests/unit of
time.
The time is calculated from the start of the first sample to the end of the
last sample.
This includes any intervals between samples.
</p>
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