The Secret Life of Fsync

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  • libeatmydata

    libeatmydata - because fsync() should be a no-op

    • oh well if you want ZFS to ignore the fsync calls... you could disable sync and rely on txg_timeout (default 5s) to write your state to disk.

    Not recommended, but this is one of the things I tried (I tuned it to 1s to be slightly safer):

    https://vadosware.io/post/everything-ive-seen-on-optimizing-...

    But you probably want to be very sure that your desktop applications are somewhat safe with their data/can recover from crashes...

    TIL of libeatmydata[0], if you're comfortable using that, you'd probably be comfortable disabling fsync on the datasets for those apps.

    [0]: https://github.com/stewartsmith/libeatmydata

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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