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on May 8, 2007 at 11:43:46 pm

Kernel Comparison: Linux (2.6.21) versus Windows (Vista)

Source Code

Kernel Source Code

*Kernel Language (no drivers)*	Linux	Windows
source	open source	closed source partly open source (WAP access WRK)
language - C (#411, #412)	Y	Y
language - Assembly (#411, #412)	Y	Y
language - SEH (#411, #412)	N	Y
language - VEH (#411, #412)	N	Y
language - C++⁸ (#411, #412 #426)	N	Y
language - C proportion⁸ (#57, #58)	94% ±3%	60% ±25%
kernel - size Source_lines_of_code ²⁸ (#7, #8²⁶)	3.5M ±0.5M	10M ±5M²⁶

Driver Source Code

*Source Code (drivers)*	Linux	Windows
language - C (#411, #412)	Y	Y
language - Assembly (#411, #412)	Y	Y
language - SEH (#411, #412)	N	Y
language - VEH (#411, #412)	N	Y
language - C++⁸ (#411, #412 #426)	N	Y
drivers proportion of total (#51, #52)	50%	40% ±20%
i.e. drivers - size Source_lines_of_code ²⁸ (#7, #8²⁶)	3.5M ±0.5M	7M ±3M²⁶
drivers proportion of total bugs (#51, #52)	85%	75% ±20%

Kernel + Drivers Source Code

*Source Code (kernel + drivers)*	Linux	Windows
language - C proportion⁸ (#57, #58)	94% ±3%	70% ±25%
language - C++⁸ (#411, #412 #426)	N	Y
total Source_lines_of_code²⁸ (#3, #4²⁶)	7M ±2M	17M ±9M²⁶
estimated bug error rate per line (#5¹⁰, #6¹⁰^{, 16})	0.02%¹⁰	0.2%¹⁰^{, 16}
i.e. estimated bugs total (#3 * #5¹⁰, #4 * #6¹⁰)	1400¹⁰	34000¹⁰^{, 16}

Johnathon Weare © Johnny Weare 2007

Widefox - the Vertical Tab Firefox

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