## ssic-linux-devel

 [SSI-devel] Interesting tidbit on effort estimation From: Roger Tsang - 2008-10-22 23:01:30 ```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? -Roger ```
 Re: [SSI-devel] Interesting tidbit on effort estimation From: John Hughes - 2008-10-23 14:05:50 ```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) ```