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Source

Page history last edited by widefox 15 years, 9 months ago

Kernel Comparison: Linux (2.6.22) versus Windows (Vista)

(courtesy http://fcgp.sourceforge.net/)

Source Code

Kernel Source Code

*Kernel Language (no drivers)*	Linux	Windows
source	open source	closed source partly open source (WAP access WRK)
language - C	Y^'	Y^'
language - Assembly	Y^'	Y^'
language - SEH	N^'	Y^'
language - VEH	N^'	Y^'
language - C++⁸	N^'	Y^' ^'
language - C proportion⁸	94% ±3%y	60% ±25%^'
kernel - size Source_lines_of_code ²⁸	3.5M ±0.5M^'	10M ±5M²⁶^'

Driver Source Code

*Source Code (drivers)*	Linux	Windows
language - C	Y^'	Y^'
language - Assembly	Y^'	Y^'
language - SEH	N^'	Y^'
language - VEH	N^'	Y^'
language - C++⁸	N^'	Y^' ^'
drivers proportion of total	50%^'	40% ±20%^'
i.e. drivers - size Source_lines_of_code ²⁸	3.5M ±0.5M^'	7M ±3M^'²⁶
drivers proportion of total bugs	85%^'	75% ±20%^'

Kernel + Drivers Source Code

*Source Code (kernel + drivers)*	Linux	Windows
language - C proportion⁸	94% ±3%^'	70% ±25%^'
language - C++⁸	N^'	Y^' ^'
total Source_lines_of_code²⁸	7M ±2M^'	17M ±9M^'²⁶
estimated bug error rate per line	0.02%^'¹⁰	0.2%¹⁰^{, 16}^'
i.e. estimated bugs total	1400¹⁰^' * ^'	34000¹⁰^{, 16}^' * ^'

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Johnathon Weare © Johnny Weare 2008

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