understanding the reports and Statistics

[man...@gmail.com]

Hello,

can some share any document or thread to understand the reports or statistics by java melody? what i mean here is significance of color used in the reports?

thanks
Manju

[Vernat Emeric]

Hi Manju,

At the top of the monitoring reports, there is a link to the online
help. For example, in English:
http://demo.javamelody.cloudbees.net/monitoring?resource=help/help.html
This online help says:
for each counter, the report shows a summary of statistics for all the
requests (global), of the statistics going beyond the threshold of alert
level 1 (warning) and of those going beyond the threshold of alert level
2 (severe).

So, the orange color is used for requests beyond the warning level. And
the red color is used for requests beyond the severe level.
By default, warning threshold and severe threshold are computed
dynamically based on mean + 1x or 2x the standard deviation of the
requests. And you can configure those thresholds, if you have defined
SLA (for example, 2s and 5s).

The user guide says that:
The parameters warning-threshold-millis and severe-threshold-millis are
the thresholds in milliseconds (global mean + 1 standard deviation and
global mean + 2 x standard deviation by default, this default setting
gives dynamic thresholds which indicate the requests with unusual mean
times regardless of the application). Beyond the thresholds the mean
times are displayed in orange or in red and are separately counted in
summary tables with their average time percentages, hits, etc. These
threshold parameters can serve as a basis for a SLA (service level) of
an application, for which constraints can be defined such as "response
time less than 2s for 90% of http requests".

https://code.google.com/p/javamelody/wiki/UserGuide#6._Optional_parameters


If you ask about the color in the charts, the blue line is the maximum
value over some interval. And the green zone is the mean value over the
interval (see the caption).
The green zone becomes a bit red at the top, just because it is prettier.

bye,
Emeric



Le 21/02/2013 05:59, man...@gmail.com a �crit :

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