How to make TaskList show exact time it took to complete a Task?

Now it s开发者_如何学运维ays Created 2011-01-03 Completed 2011-01014.

But I wonder how long this feature took(for how long was task activated in minutes/hours if possible).

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Try hoverring over the task in the Task List view.

In my Eclipse 3.5 installation, I see the total time that a feature was active (in hours:minutes) in a popup when hovering over the task in the Task List view.