5.3. Using the Performance Tool

The performance tool can be used to display performance information about the transaction service. This information is gathered using the Performance JMX bean which means that the transaction service needs to be integrated into an Application Server to give any performance information.
The performance information is displayed via a multi-series graph. To view this graph simply open a performance window by selecting Performance > Open
The window now on screen contains a multi-serise graph which can display the following information:
  • Number of transactions.
  • Number of committed transactions.
  • Number of aborted transactions.
  • Number of nested transactions.
  • Number of heuristics raised.
To turn these series on and off simply select the menu option from the series menu.
When series are turned on they appear in the legend at the bottom of the graph. The colour next to the series name (for example, Transactions Created) is the colour of the line representing that data.
The data shown is graphed against time. The Y-axis represents the number of transactions and the X-axis represents time.
At any point the sampling of data can be stopped and restarted using the Sampling menu and the data currently visible in the graph can be saved to a Comma Separate Values (CSV) file for importing the data into a spreadsheet application using the Save to .csv menu option from the Data menu.