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    SubjectRe: Btrfs v0.16 released
    On Thu, Aug 14, 2008 at 05:00:56PM -0400, Chris Mason wrote:
    > Btrfs defaults 57.41 MB/s
    > Btrfs dup no csum 74.59 MB/s

    With duplications checksums seem to be quite costly (CPU bound?)

    > Btrfs no duplication 76.83 MB/s
    > Btrfs no dup no csum no inline 76.85 MB/s

    But without duplication they are basically free here at least
    in IO rate. Seems odd?

    Does it compute them twice in the duplication case perhaps?

    -Andi


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