Theodore Ts’o • 3/16/2009

Don’t fear the fsync!

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This technical article clarifies misconceptions about the fsync() system call in Linux filesystems. It explains why fsync() is the only POSIX-compliant way to ensure data is written to stable storage, counters common excuses for not using it (like perceived performance issues), and analyzes a real-world example involving Firefox 3.0 and SQLite.

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#performance #linux #fsync
Don’t fear the fsync!

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