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This table shows the threads in which the application ended up spending the most time executing Java code. Table: Hot Threads Table Description describes the content of this table.
Hot Threads Table Description
Column | Description |
---|---|
Thread |
The thread identifier. |
Sample Count |
The number of times the thread was sampled during the period defined on the range navigator. |
Percentage |
The percentage of the total thread samplings that the associated thread was sampled during the period defined on the range navigator. |
You can use the filtering mechanism above the table to narrow the information shown in a table.
To filter a column:
Right-click the Filter Column drop-down control to open its menu and select the column you want to filter on, for example, Sample Count.
The column name appears in the Filter Column field.
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.
You can customize the Hot Classes table by using the context menu to do the following:
Change the sort order of each column. See Changing the Sort Order of a Table Column.
Select which data to show by selecting from a list of available columns.
Copy the selection for pasting elsewhere, for example in a text editor, and configure how that data is to be stored on your clipboard. See Copying Data to the Clipboard.
Add and remove individual data to and from the operative set. See Working with the Operative Set.