## MIS BA: Graph Durations

This tool will generate a chart showing three metrics together. All three metrics relate to the number of seconds spent on each node within the model.

The aim of this tool is to help you identify where bottle necks are occurring.

The three metrics explained:

### “Total time spent (sec.)”

Arguably the least interesting of the three, it shows the total number of seconds the node has been displayed ever. Possibly interesting, possibly not.

### “Avg. % time spent per case”

Arguably the most interesting of the three. This is the percentage of time that a node takes in relation to it’s respective case over all cases on average. So, in other words, if a node is costing your end users a lot of time, this value will be higher than the other nodes.

### “Number of cases used in”

This metric is essential for qualifying a problem exposed by the previous metric, ‘Avg. % time spent per case’ - if the node has only been used in a few cases, then the average time is irrelevant, or at least not urgent.

### Use case:

Here’s an example of a testing NDA model

It’s clear to look at that there is a bottle neck in the node named “name_case” - which in this model is a node with a single interface asking the end user to give a name for the case.

It turned out that people were struggling to come up with a good name.

After removing that node, we reduced the time cost on the model, thereby optimizing it.