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A comment on Ask HN: Why are supercomputers all running Linux and not BSD?. Parent comment

Re:Ask HN: Why are supercomputers all running Linux and not ... by tatersolid on Saturday November 18, 2017 @09:47PM (#15731978)
Bingo. Async disk IO on Linux has to be unbuffered and block aligned. Making it useful only for databases that manage their own caching, and useless for file systems.

A video CDN needs lots of concurrent access to a file system.

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