Re: ANNOUNCE: Ada success story in IEEE Software

[Kilgallen@SpamCop.net (Larry Kilgallen)]

In article <3C3CB31E.BC6FDBED@acm.org>, Jeffrey Carter <jrcarter@acm.org> writes:
> Ted Dennison wrote:
>> 
>> In article <3c3aea7b$1@pull.gecm.com>, Martin Dowie says...
>> >
>> >"Dale Stanbrough" <dstanbro@bigpond.net.au> wrote in message
>> >news:dstanbro-FFA1D2.23113708012002@mec2.bigpond.net.au...
>> >> Rod Chapman wrote:
>> >>
>> >> > factor in the success of the project.  The final system achieved
>> >> > 0.04 defects per kloc (that's 4 defects in 100,000 lines of code) post-
>> >> > delivery, which compares favourably with industry norms.
>> >>
>> >> I'm not sure I follow this. If this result is the industry norm,
>> ..
>> >He said it "compares favourably with industry norms" not "matches the
>> >industry norms"
>> 
>> I suspect that may have been a bit of that famous British understatement too. I
>> think our last (non safety-critical) Ada project would have had a defect count
>> orders of magnitude higher than that.
> 
> I recall seeing the "industry norm" given as 1 defect per kloc.

I suppose it depends on what industry.  I have seen numbers of 10 and 5
defects per kloc on brand new code and modification of code, not specific
to Ada.