Re: Interesting tidbit on effort estimation

Roger Tsang wrote:
> Hi,
>
> I was reading up
> http://www.dwheeler.com/essays/linux-kernel-cost.html#results and
> thought we'd punch in some numbers for fun.
>
> Calculating the approximate amount of new kernel code that went into
> creating OpenSSI-1.9.6 since last release:
>
> MM-nominal-semidetached = 3*(KSLOC)^1.12 =
>   = 3* (8)^1.12 = 45.3 MM
> Effort-adjustment =  1.15 * 1.0 * 1.65 * 1.11 * 1.0 * 1.15 *
>     1.0 * 0.86 * 1.0 * 0.86 * 1.0 * 0.95 * 0.91 * 1.0 * 1.0
>     = 1.54869
> MM-adjusted = 45.3 * 1.54869 = 70.2 Man-Months
>             = 5.85 Man-years of effort to (re)develop
> If average salary = $60K/year, and overhead = 2.40, then:
> Development cost = 60000*2.4*5.85 = $842,400
>
> Ever wonder what the estimate would be to re-develop OpenSSI from scratch?
>
>   
Well, considering it's taken about 28 years to get to this point...

http://en.wikipedia.org/wiki/LOCUS_(operating_system)


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