How Is the Time Line of the Call Chain Drawn?
How is the time line of the call chain drawn? When the time lines of the call chain are drawn as shown in the following figure, are they drawn incorrectly?
The time line of each method indicates the start position and total duration of the method. On the call chain page, a time line is drawn in gray, and the part of the duration of each method is filled with green. The part filled with green indicates the total duration. You may be confused about the call chain shown in the preceding figure. The time lines of methods 1 and 2 partially overlap, and the last part of each time line is not green.
Actually, the time lines are drawn correctly. Normally, they should be drawn as shown in the following figure. However, for the call chain in APM, the time line of each method indicates the start position and total duration of the method. Therefore, the time lines are drawn as described in the problem symptoms.