Year | Product Version | SLOC (Million) | Dev. Estimated Costs (Billion US Dollars) | Maint Estimated Costs (Billion US Dollars) |
2003 | Linux 2.6.0 | 5.2 | 0.61 | 1.5 |
2006 | Linux 2.6.8 | 6.5 | 1.14 | 2.7 |
Oct 2008 | Linux 2.6.25 | 8.2 | 1.3 | 3.1 |
2009 | Linux 2.6.29 | 11.0 | 1.4 | 3.7 |
Dec 2009 | Linux 2.6.32 | 12.6 | 1.8 | 4.0 |
Aug 2010 | Linux 2.6.35 | 13.5 | 2.4 | 5.2 |
July 2011 | Linux 3.6 | 15.9 | 3.0 | 6.8 |