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A Look At The Meltdown Performance Impact With DragonFlyBSD 5.2

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  • A Look At The Meltdown Performance Impact With DragonFlyBSD 5.2

    Phoronix: A Look At The Meltdown Performance Impact With DragonFlyBSD 5.2

    Besides looking at the HAMMER2 performance in DragonFlyBSD 5.2, another prominent change with this new BSD operating system release is the Spectre and Meltdown mitigations being shipped. In this article are some tests looking at the performance cost of DragonFlyBSD 5.2 for mitigating the Meltdown Intel CPU vulnerability...

    http://www.phoronix.com/scan.php?pag...-Meltdown-Perf

  • #2
    why does intel not RMA swap our this defect CPUs again? :-/ #sad

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    • #3
      Originally posted by rene View Post
      why does intel not RMA swap our this defect CPUs again? :-/ #sad
      They don't have any replacements, that would cost a ton, and it can be mitigated through software. U.S. courts would never go for it anyway.

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      • #4
        this is the second "dieselgate" for intel: in the 2009 it was discovered that the intel compiler, the one used to compile some popular benchmarks, was disabling optimizations on non-intel cpus (the famous "cripple AMD" function), misleading benchmarks and thus the price/performance ratio of amd cpus

        today, the meltdown attack highlighted that the hardware was an oversimplified version and after the fixes it is a 10% slower and thus misleading benchmarks and price/performances ratio....

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        • #5
          Originally posted by trek View Post
          this is the second "dieselgate" for intel: in the 2009 it was discovered that the intel compiler, the one used to compile some popular benchmarks, was disabling optimizations on non-intel cpus (the famous "cripple AMD" function), misleading benchmarks and thus the price/performance ratio of amd cpus
          It still is, that hasn't changed.

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          • #6
            Michael Any chance of also including Ryzen 1 (or even better, Ryzen 2 after the emabargo) in this also with Intel CPUs?

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            • #7
              Originally posted by rene View Post
              why does intel not RMA swap our this defect CPUs again? :-/ #sad
              It's not serious enough to have PR issues for them (which is relative, Intel's near-domination of x86 marketshare does make even big fuckups a very small PR issue).

              AMD did issue the RMAs for PR reasons only, it's not like they would have any issue with consumers on linux not being able to use their product.

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