Interrupts View

Use the Interrupts View to display information about data collected from SWI and IRQ interrupts. The graph portion of the Interrupts view shows the amount of interrupts per millisecond.

The Interrupts View has two different view options: Software interrupts (see Figure 2.) or Hardware interrupts (see Figure 3.). The display is different depending upon the view option selected in the Title bar drop-down menu, shown in Figure 1.

Figure 1. Interrupts view Title bar drop-down menu

Software interrupts

The Software interrupts graph displays the interrupts according to the threads and SWI functions selected in the legend tables. A separate line of graph is displayed for each selected thread, with the thread name in the top left-hand corner. In the graph, the height of the column shows the amount of interrupts, and each color represents an SWI function. The scaling of the graphs is shown at the left side of the graph.

Figure 2. Software interrupts view

There are two legend tables displayed below the software interrupts graph: One for the threads from a device and another for SWI functions.

Description of columns in the Threads table:

You can select the threads you want to display in the graph by checking the box next to the thread name in the table. A separate line of graph is displayed for each selected thread, with the thread name in the top left-hand corner.

Description of columns in the SWI Function table:

You can select the functions you want to be displayed in the graph by checking the box next to the function. Each function is represented by a unique colour, shown next to the function name in the Function table.

The columns in the tables may be reordered, resized, and sorted by clicking or dragging column headers.

Hardware interrupts

The Hardware interrupts graph displays the interrupts for the selected IRQ lines. A separate line of graph is displayed for each selected IRQ line, with the line ID in the top left-hand corner. In the graph, the height of the column shows the amount of interrupts. The scaling of the graphs is shown at the left side of the graph.

A legend table is displayed below the graph.

Figure 3. Hardware interrupts view

Description of the columns in the IRQ lines table:

You can select the IRQ line you want to be displayed in the graph by checking the box next to the line ID in the table. The color next to a check box corresponds to that item’s color in the graph.

The columns in the tables may be reordered, resized, and sorted by clicking or dragging column header.

Related references