On this page the bottom and most important half of the Ymonitor application is described. Here you can find your data displayed in different ways. To select what you want to see, there are several buttons at the top of the website. These buttons show the different views that are possible to select. Each shows different data or the same data in a different way. The currently selected view will have a black background.

General information

Exporting data

At the top right corner of a graph or table you can see the following icon:

Open

If you click this icon you get a menu with several export options. This could be an export to the clipboard, a png file or a CSV document in case of table, and an export to a png file in case of graph.

Working with graphs

At any place where there is a graph and not a table it is possible to filter what the graph shows. If you click on an option in the legend below the graph, it will remove that option from the graph. This could be useful to rescale the graph for more details. This goes for any graph so not only the line graphs but also bar or pie charts. It doesn't work in the tables that are shown.

Availability

Open

On this page you can see the availability of your application. First you will see a graph with the transactions, then a table with the transactions. Under that is the same but showing sentinels instead of transactions. In the case you see a grey block here it means that there has been no measurement at that time. This could have several reasons but one of them is that the script came across an error. In most cases Sentia will build a script so that it will stop after failing one transaction. The reason for this is that it is impossible for the script to know if the other transactions can be performed. For instance, when the login transaction fails a lot of the other transactions after it won't be possible to do (since the user is not logged in). So in most cases you will see grey blocks after a failed transaction (red block).

Performance

In here you can see the performance of your application in seconds. As with the availability view, you will first see a graph and table depicting the transactions with under that same as for the sentinels. The colouring of the blocks is done using the set thresholds. To see the settings you can click on the threshold button in the top right. In the case that a measurement is unavailable it will show as a grey block within this view. This is because we can't tell the performance of a failed transaction. It could be quicker because the server gives an error message or it could be longer than it should be because of timeouts. Note: There are cases where this view doesn't actually show the performance but is measuring something else. This is the case with services that for example measure the amount of currently active Citrix sessions. If a script is measuring this, it will use the performance view as a way of portraying the number.

Alerts

In this view you can see the amount of triggered alerts. The Alerts have been set up by Ketenbewaking and if there needs to be more alerting or less please contact them.
If you click on one of the bars you get a list of all the alerts in that timeframe along with the content of those alerts.

Errors

In this view you can see the amount of errors (failed transactions) there have been over the selected period.
If you click on one of the bars you will get a list of all the errors in that timeframe. It will also show which sentinel generated the error along with the message of the error. On the right side, if you click on the download icon you can download screenshots showing what our tooling saw at the moment of the error. It is possible that screenshots aren't available. This is dependent on application being monitored and the tooling used to do so. 

There is another button available next to the download button which is 'compare screenshots'. More detailed information can be found on Screenshot compare page.

Apdex

On this page you can see the apdex value of your application. The view for the apdex value is similar to the availability and performance views. The first graph and table shows the apdex value of the transaction and the graph and table below them are same as for the sentinels. The colouring of the blocks is done using the set thresholds. To see the settings you can click on the threshold button in the top right. To have more detailed information on Apdex value, please visit Report page.

Percentile

The data shown in the graph and matrix on this view can help with filtering outliers from your information. The data that is being calculated can be summed up in the following sentence:

If for example the 95th percentile has a value of 5 (seconds) it means that of all the measurements done 95% of the measurements have finished in 5 seconds or less. Therefore 5% of the measurements took 5.1 seconds or higher.

Tresholds

By clicking on 'Tresholds' button, the availability, performance and APDEX thresholds of the currently selected service will be shown. The threshold is the value a measurement has to reach before the colour in Ymonitor will change. Below image shows the values that are set for 3 situations.

If the measurement of the transaction is completed in less than 1.258 seconds, that will be shown in green in Ymonitor.

If the measurement of the transaction takes more than 1.585 seconds, that will be shown in red in Ymonitor.

If the measurement of the transaction lasts between 1.258 and1.585 seconds, that will be shown in orange in Ymonitor.