Saturday, May 17, 2008

how to estimate workload - le2XR

Hi XR,

There's a lot of theory and many book chapters and courses on app development estimation. I don't know how managers in my department does it. I'm sure these factors below affect their estimations.

* the right way of solving a problem can shorten a 2-day analysis/discussion to 2 hours, provided someone points out the correct way in the beginning. In our bigger department (100+ developers), many managers make estimates assuming each developer knows the standard (not always best) solutions from the onset. If I am new i could spend hours and hours trying something wrong.

* as in your struts form-validation example, a good framework/design can reduce a 1-month job to 1-week.

* tool -- the right software tool can reduce a 3-hour job to 30-minutes. Example -- I once mentioned to you testing tools. Also consider automated regression testing.

* A common complaint in my department (100+ developers) -- a poorly documented system can turn a 2-day learning curve into a week.

* I suspect my colleagues do fewer test cases than i do, given the same system requirement. This is partly because they are confident and familiar with the system. This could mean 30% less effort over the entire project.

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