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Industry Average Defect Rate

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  • #25970

    Girijesh
    Participant

    Can anyone shed some light on prevelant industry average delivered defect rates (per function point) ? Is there any literature that you know of that further breaks these defects down by severity – what percentage are high criticality, low criticality etc ?
    I am also looking for project related data – for an application of size greater than 10,000 FPs – defect arrival patterns and support team size and structure. Appreciate it if you can share any information regarding the same.
    Thanks

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    #63061

    Gary A. Gack
    Participant

    Check out books and articles by Caper Jones

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    #63067

    Balaji
    Participant

    I have collected ana analysis the data provided by the SPIN. From the data from the
    53 representative projects / two broad domain – Application & system SW / predominatly C,C++, Java, VB, VC++ / Average Size of the projects = 30KLOC / Average Project duration = 900 Staff days / Average Duration of the projects = 190 Days.
    Defects: Total Defect Density = 8.2 per KLOC (58% detected through Reviews & 42% detected through Testing)
    Productivity:Overall project = 57 LOC / Staffday, Code Phase = 121 LOC/StaffDay

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    #63071

    Vikas M. Valsang
    Member

    For System Software
    Typically it is observed
    Requirements: 2 – 3 def/KLOC
    Analysis        : 3 – 4
    Design          : 5 – 6 defects/KLOC
    Coding         : 14 – 16 defects/KLOC
    Unit Testing  : 4 – 5 defects / KLOC
    System Integration Testing : 2 – 3 defects /KLOC
    These might be applicable for non hardware dependent software. However as software being developed, depends on the hardware, review defects vs testing defects will change with testing defects being detected more than the above mentioned norm

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    #63074

    alexhunt
    Participant

    Would you kindly disclose where you got these industry defect numbers from? Any web links to these reports, perhaps?
    Thanks!
     

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    #63076

    Balaji
    Participant

    I got some extracts from SPIn-benchamarkin, You shall visit this site and download this .pdf. To download, you must login. register and login and get the .pdf
    Link:
    http://www.soft.net/soft.net/spin/pdf/B2SIG.pdf

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