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Microsoft found that compressed pages were always faster, because added by de-/compression was less than the latency to disk (given a sufficiently fast compress

Microsoft found that compressed pages were always faster, because added by de-/compression was less than the latency to disk (given a sufficiently fast compression algorithm). As a bonus, it's also faster to read and write compressed pages to disk (if that absolutely has to happen). Zswap is therefore enabled by default on Windows. I configure my own kernel on Arch and Zswap is enabled by default there, too.

tomcam 6y ago
Pages as in the 8K (for example) data structure used to store portions of files on disk, or pages as in text files? I'm assuming the former but I am not very good with file system internals
- tyingq 6y ago
  Memory pages, typically 4kb.
  - tomcam 6y ago
    Thanks
londons_explore 6y ago
Microsoft's compressed pages implementation seems to work far better than zswap on Linux. I can't quite see why - perhaps the logic to decide which pages to compress is different, or there is too much code in the swap subsystem that slows down the compression/decompression process...