Skip Headers
Previous
Previous
 
Next
Next

Event Types Panel

The Event Types panel show high-level information about all events recorded during the period defined on the range navigator. For more information on events, see Flight Recorder Events.

The Event Types panel is comprised of a pie chart and an associated Event Types table. The pie chart shows for each event its percentage of all events, while the Events Type table shows raw data for those percentages. Color chips next to the Event Type name in the table identify that event on the pie chart. The columns on the table are described in Table 6–31.

Producers Table Description

Column Description

Event Type

The name of the event type. A single event type might represent thousands of individual events of the same type, as indicated in the Count. The color chip to the left of the name matches that producer's section on the pie chart.

Total

The total amount of time, to the millisecond, consumed by all events of that type during the period specified on the range navigator.

Count

The total number of times that event occurred during the period specified on the range navigator.


You can also see the same data about an Event Type that appears in the table by hovering your pointer over the producer's segment on the pie chart.

Two features on this panel enable you to narrow the results appearing on both the table and the pie chart. These are a filtering mechanism and an option for displaying just the operative set of data.

Filtering Mechanism

You can use the filtering mechanism above the table to narrow the information shown in a table.

To filter a column:

  1. Right-click the Filter Column drop-down control to open its menu and select the column you want to filter on, for example Event Type.

    The column name appears in the Filter Column field.

  2. In the adjacent text box, enter the string for which you want to filter.

    Normally, to lessen the impact on performance, matching is done using only simple Kleene star wildcards. A star (*) will match zero or more occurrences of anything; for example:

    8* will match anything beginning with 8. *es will match anything ending with es.

    You can also match using regular expressions; however, resolution can take much longer with complex expressions and large amounts of data; for example:

    regexp:(YC|Young Collect).* will match anything starting with YC or Young Collect, such as YC Promotion Failed, Young Collection and Young Collector Nursery Snapshot.

    You can also build logical expressions for columns with numerical values. For instance, for a column with counts, such as the one in Memory/allocation Allocation by Class table, the expression > 100 && < 500 will filter out the classes with more than 100 but less than 500 events.

    The filter text entry field is case sensitive.

Using the Event Types Panel with the Operative Set

On the Event Types panel, you can add or remove specific event types from the operative set to compare just the events that occur in those traces. This functionality, accessible from the Operative Set context sub-menu, is similar to that available on other Flight Recorder tabs.