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Meltdown/PTI Mitigation Impact On BSDs vs. Linux

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  • -MacNuke-
    replied
    Pretty sure that every filesystem related benchmark is a benchmark ZFS vs ext4. And we already know that near to every filesystem is slower than ext4 (XFS and f2fs are good too). But that is not the point of this benchmark..

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  • bpetty
    replied
    Regardless of Meltdown, I can't believe BSD is so slow. I wonder how much of it is ZFS related. I remember thinking, when I was getting into assembly and FreeBSD, that FreeBSD didn't store values in CPU registers like Linux, but used stack memory or something. Am I remembering that wrong? That would make it easy to port, but a lot slower to run.

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  • phoronix
    started a topic Meltdown/PTI Mitigation Impact On BSDs vs. Linux

    Meltdown/PTI Mitigation Impact On BSDs vs. Linux

    Phoronix: Meltdown/PTI Mitigation Impact On BSDs vs. Linux

    Besides the fresh BSD/Linux disk performance tests, some other tests I ran on various BSDs and Linux distributions this week was looking at the performance impact of Intel Meltdown CPU vulnerability mitigation on each of them, namely the performance impact of using kernel page-table isolation...

    http://www.phoronix.com/scan.php?pag...-Linux-Compare
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