The History / Chart screen graphs various data from the MOMI history files. History capture must be enabled in order for this screen to function.
Activity on this screen is started by pressing the Config button and selecting a predefined, previously saved or defining data to graph. The pop-up window allows selection of database, start/stop time and item(s) to display. Up to 16 different history items may be selected. When an Element Type is selected, the available items appear in the Element Sub Type along with other fields such as a CPU number or process name. For example, selecting a Process Element Typee requires a process name (or cpu,pin for unnamed processes). The predefined charts Chart all CPUs for Busy percent or previously saved user chart are also available.
Once a graph is displayed additional information and drill down options are available by placing the mouse over a chart line or point.
Clicking on a chart line will display the date/time and exact value at the point,minimum and maximum values and other information at that point or point in time.
Additional data may also be displayed in some charts. For example, a right-click over a CPU busy line displays menu that allows display of History CPU Detail.
Selecting Goto History CPU Detail jumps to the History / CPU Detail screen for the chart line CPU and processes captured at that point in time. The Backward and Forward buttons allow stepping through history intervals.
Charts of user defined entities are defined in Config / Chart Elements. In the image below, the CPU Busy percent for $MOMI4 is selected. Additional chart elements are defined by pressing Add New Element.
The scrolling feature allows the User to easily scroll forward and backward in time and visually search for unexpected activities. Additionally, when scrolling forward in time, the chart becomes 'live' and displays new data as it arrives.
History drill-down is aided by two bars (highlighted in green) on the left and right hand sides of the chart. They provide a graphical means to select a select a window of time based on the current data displayed. In the image below, history at 1 hour is displayed.
Left-click and hold on a line to move it left and right. A pop-up tool tip appears in the bottom center to show the current time values with the history bar selection. In this example, the scroll bars are moved to just either side of a 'bump' in the history chart graph data.
After the bars are positioned, right click on the chart area and select Reload Chart with New Times.
If Reload Chart with New Times... is selected, the History Chart Configuration pop-up is displayed. Note that the Chart START and STOP times are preloaded with the values displayed when the history bars were positioned. Additionally, the History database was pre-selected to the next higher resolution. Press Request to reload the chart based on the new time values and selected database.
The screen is reloaded with the times selected (perhaps adjusted to the capture interval).
The following video demonstrates drill-down and detail display at a point in time.
Further history drill-down can occur until the highest resolution data is reached (assuming the history is still available). Available history may be see on Server_Info .