Attempt to set WCE for raw file backends #665
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hawkw
reviewed
Mar 21, 2024
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I've taken this for a spin in my local environment, and it improves performance by around ~3x! |
When the file-based block backend is running atop a zvol, it will default to synchronous writes unless otherwise toggled by DKIOCSETWCE. Since the backend is already minding flush requests via fsync(), we should enable the write cache on the device for a significant performance gain.
hawkw
approved these changes
Mar 22, 2024
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When the file-based block backend is running atop a zvol, it will default to synchronous writes unless otherwise toggled by DKIOCSETWCE. Since the backend is already minding flush requests via fsync(), we should enable the write cache on the device for a significant performance gain.