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  1. DragonFly has taken an entirely different...

    DragonFly has taken an entirely different approach to scalability than Linux. Whereas Linux uses under most circumstances the typical blocking mutex model and in certain cases it does RCU, DragonFly...
  2. The DragonFly BSD virtual memory subsystem has...

    The DragonFly BSD virtual memory subsystem has diverged quite a bit from the FreeBSD one since the fork 9 years ago. We use both different multiprocessor synchronization primitives and strategies...
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    I think giving these benchmarks another go...

    I think giving these benchmarks another go against our recent DragonFly BSD 2.10 release is probably warranted.
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    @ciplogic -- what you seem to be failing to...

    @ciplogic -- what you seem to be failing to understand is that the ZFS random write results aren't actually possible, there is something else going on. Without an explanation as to what else is going...
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    Fortunately, I am familiar with the internals of...

    Fortunately, I am familiar with the internals of UFS, ZFS and HAMMER. HAMMER is "log structured" in the same fashion as ZFS. Being log structured does nothing to explain the -increase- in performance...
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    That's cute, but the results don't jive. Unless...

    That's cute, but the results don't jive. Unless you can explain why ZFS was miraculously faster when all of the other file systems were slower I have to assume there is something wrong with your test.
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    Also, the blogbench results indicate that you ran...

    Also, the blogbench results indicate that you ran the benchmark and seperated the read and write results to create the independent graphs. You should point this out in your article. For heavy...
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    There is something seriously wrong with the...

    There is something seriously wrong with the Threaded I/O tester results. There is simply no way possible that the ZFS writes got faster when switching from linear to random writes, especially...
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