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Why does Linux run so well on ARM
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From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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A key factor is LINUX has been available for ARM since nearly "the beginning". Unlike Windows, which was basically Intel only for well over a decade, LINUX has had strong support for multiple architectures throughout its lifecycle. As a result, software that grew up within that ecosystem tended to be more agnostic in design which helps porting efforts.