Download PDF

µServer User Manual
10/24/14
7.4.2. Value display
Each line of the table represents the average value of each variable on the whole sub-period.
In order to display units, you only need to define the format in the properties of the variable (see
section 4.4 Administration of variables.
7.4.3. Display of several variables
When several variables are displayed on a same table, it will simply create an additional column
per variable, along with a color set for a better visibility.
7.4.4. Data export
This view features 2 types of data export:
• A global export of all displayed variables (button Export in the upper side of the view)
• An individual export for each one of the displayed variables ( a small green arrow, which is
located just before the variable identification)
The exported file will include all the lines as they are displayed in the table, in a .csv file format.
7.5. Log filters
Each new measure is registered on the database so it is important to filter the logging. An
overcharged database has as consequence:
• Increase in the space used on the disk
• The variable access time to show curves and graphs can become slower
• Increase in the data amount and thus in the time, and possibly in the communication costs in
case where µServer sends its data to a central server. In this case, the central server
database is also heavier.
By default, µServer registers a new point any time a logged variable changes its value. This is not
adapted to a variable that constantly changes and, in particular, if it is the case of a decimal
variation, as the minimal variation will be considered as a new value, and thus a new log.
Log parameters Hysteresis, Delay between two points and Average measure, described on
section 4.4 Administration of variables allow to register just significant data.
A well configured filter allows to analyze the evolution of an application without lack of
information, just by saving a minimum of logged data. It is usually not necessary to have a great
precision in order to analyze the behavior of an application.
72/126