LF (LinuxFoundation) has uploaded videos from the last Kernel Summit 2008 (held in last September) with interviews from some of the developers who works on the Linux Kernel. Some of them you probably aware of, such as Linus Torvalds, Greg Kroah-Hartman, Jon Corbet, Ted Ts'o, David Miller, Dave Jones, and many more.
Here you will see lots of topic about kernel development itself. Beware, the file are quite big and it's kinda slow from here.
Showing posts with label LinuxFoundation. Show all posts
Showing posts with label LinuxFoundation. Show all posts
Tuesday, October 28, 2008
Thursday, October 23, 2008
How Much a Linux Distribution Costs?
Amanda McPherson, Brian Proffitt, and Ron Hale-Evans from LinuxFoundation has released an interesting article about Estimating the Total Development Cost of a Linux Distribution.
It contains an updated calculations of Software Lines of Code present in a typical Linux distribution. In the paper, the authors uses Fedora 9 as the basis. Guess what? It's estimated that it would require approximately $10.8 billion to build Fedora 9. Additionally, it would take $1.4 billion to develop the Linux kernel alone.
The assumption used on this article for US programmer salary was $75,662.0810 (according to US BLS - Bureau of Labor Statistics). Given the assumption, here's the results:
And here's the results for the kernel estimation
In simple word, Linux has grown up and getting matured. It's getting bigger and bigger and compared to six years ago, a lot of new functionality has been added to Linux distribution.
It contains an updated calculations of Software Lines of Code present in a typical Linux distribution. In the paper, the authors uses Fedora 9 as the basis. Guess what? It's estimated that it would require approximately $10.8 billion to build Fedora 9. Additionally, it would take $1.4 billion to develop the Linux kernel alone.
The assumption used on this article for US programmer salary was $75,662.0810 (according to US BLS - Bureau of Labor Statistics). Given the assumption, here's the results:
| Total Physical Source Lines of Code (SLOC) | 204,500,946 |
| Development Effort Estimate, Person-Years (Person-Months) (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05)) | 59389.53 (712674.36) |
| Schedule Estimate, Years (Months) (Basic COCOMO model, Months = 2.5 * (person-months**0.38)) | 24.64 (295.68) |
| Total Estimated Cost to Develop (average salary = $75,662.08/year, overhead = 2.40). | $10,784,484,309 |
And here's the results for the kernel estimation
| Total Physical Source Lines of Code (SLOC) | 6,772,902 |
| Development Effort Estimate, Person-Years (Person-Months) (effort model Person-Months = 4.64607 * (KSLOC**1.12)) | 7557.4 (90688.77) |
| Schedule Estimate, Years (Months) (Basic COCOMO model, Months = 2.5 * (person-months**0.38)) | 15.95 (191.34) |
| Estimated Average Number of Developers (Effort/Schedule) | 473.96 |
| Total Estimated Cost to Develop (average salary = $75,662.08/year, overhead = 2.40). | $1,372,340,206 |
In simple word, Linux has grown up and getting matured. It's getting bigger and bigger and compared to six years ago, a lot of new functionality has been added to Linux distribution.
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