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Optimizing File Streaming Input/Output
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DOI：10.1109/MS.2025.3621023.png)
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Abstract
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Performance is a critical attribute of system software since even small improvements are amplified across the countless CPU instructions devoted to it. In the two previous installments of this column, I described how I ported the Unix sed stream editor1 from C into Rust2 and the system’s design.3 Here, I describe how I optimized its input/output (I/O) performance by exposing advanced operating system (OS) facilities as Rust abstractions.
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