Software Process Improvement Plan INF 5181 Presentation - - PowerPoint PPT Presentation

Software ¡Process ¡ Improvement ¡Plan ¡– ¡ INF ¡5181 ¡Presentation ¡

Study of a Software Bug-Fixing Project at a large software outsourcing company

Yannick LYF 20 Sep 2012

Project ¡Context ¡

O Infosys Ltd – Indian multinational provider of

business consulting, technology, engineering and

• utsourcing services company*

O Client Project – Big European Insurance company O Bug-Fixing of a (VB6 to VB.NET) Software Migration

Project – Involving testing, debugging, and fixing of defects raised by users at client location

* Source: http://en.wikipedia.org/wiki/Infosys

Project ¡Issues ¡

O Poor understanding of bug descriptions

O Syntax, Semantics, and Pragmatics

O High bug-fixing turnaround time O Poor code quality (Adherence, style) O Partial / Incomplete bug fixes

O Frequent “bug reopens” O Code-rewrite effort

O Lack of highly trained staff O Productivity nuisances

O Low bug fix count (1-2) per day

O Poor, inefficient, unequal utilization rate

Image courtesy: http://en.wikipedia.org/wiki/File:World_Map_flat_Mercator.png

Europe Mauritius Pune Bangalore

Improvement ¡Goals ¡

O Easy analysis and reproduction of bugs

O Through re-structuring of bug descriptions

O Improved Bug-Fixing turnaround time: <= 2 days O Code quality Improvements: 100 % random checks O Code-Rewrite Effort: < 20 % of total time / week

O Less bugs re-opened due to poor code fixing and new

bugs caused by previous code fixes

O Better training support for new and existing staff O Higher Productivity: min. of 4-5 bug fixes / day O Better utilization rate: > 90% utilization / day