]]>

CPU Vulnerabilities, Meltdown and Spectre, Kernel Page Table Isolation Patches, and more

Discussion in 'Hardware Components and Aftermarket Upgrades' started by hmscott, Jan 2, 2018.

  1. Tanner@XoticPC

    Tanner@XoticPC Company Representative

    Reputations:
    414
    Messages:
    2,879
    Likes Received:
    3,297
    Trophy Points:
    281
    Any word yet on the actual performance hit per generation/CPU? Sounds like they are very unsure of the actual effect given that I've seen 2%-30% thrown around. Makes me think it will affect different architectures differently at the very least.
     
    hmscott and Raiderman like this.
  2. ajc9988

    ajc9988 Death by a thousand paper cuts

    Reputations:
    1,092
    Messages:
    4,526
    Likes Received:
    6,276
    Trophy Points:
    581
    hmscott and Raiderman like this.
  3. Talon

    Talon Notebook Virtuoso

    Reputations:
    565
    Messages:
    2,264
    Likes Received:
    1,735
    Trophy Points:
    181
  4. ajc9988

    ajc9988 Death by a thousand paper cuts

    Reputations:
    1,092
    Messages:
    4,526
    Likes Received:
    6,276
    Trophy Points:
    581
    It does to a degree, but it varies more by task, procedure calls, and need for kernel access.

    This is why gaming isn't as affected as high performance computing.
     
    Raiderman likes this.
  5. Talon

    Talon Notebook Virtuoso

    Reputations:
    565
    Messages:
    2,264
    Likes Received:
    1,735
    Trophy Points:
    181
    https://www.hardwareluxx.de/index.p...er-sicherheitsluecke-im-prozessor-design.html

    Again more benchmarks with the latest Windows Insider Build 17063 that includes the KPTI patch. While there is some change, it's so small it's not even worth really the hype that has been thrown around. If this is their first hack at a fix and the change is this tiny then I'll take it. Given time and further refinements to the overhead I highly doubt there will be any measurable change after a few more patches.
     
    Ashtrix, Papusan and Mr. Fox like this.
  6. Tanner@XoticPC

    Tanner@XoticPC Company Representative

    Reputations:
    414
    Messages:
    2,879
    Likes Received:
    3,297
    Trophy Points:
    281

    Makes sense, will be interesting to see when more benchmarks start rolling in.
     
  7. ajc9988

    ajc9988 Death by a thousand paper cuts

    Reputations:
    1,092
    Messages:
    4,526
    Likes Received:
    6,276
    Trophy Points:
    581
    Yes, let us only look at the common consumer uses and benchmarks. Never mind that other, more intense uses that are seen with the HEDT and Server markets can be effected heavily.

    What that shows is that, to the consumer market, Intel is not hit hard by this, generally, leaving their crown intact there. What it doesn't show is the market where the real money is, servers, and the fact they have a 99% (or had, haven't checked numbers recently) market share that may be hit significantly. So, what is being shown is that the average consumer has little to worry about. In that, I'll agree with what you have posted. But, I am not seeing your refutation on their commercial side.
     
    Raiderman likes this.
  8. Raiderman

    Raiderman Notebook Evangelist

    Reputations:
    335
    Messages:
    656
    Likes Received:
    1,501
    Trophy Points:
    156
    Wish I knew the German language. I have not heard of these sites, and why isnt there any US based sites with benchmarks yet? Just curious as to how German sites are able to bench?
     
  9. Talon

    Talon Notebook Virtuoso

    Reputations:
    565
    Messages:
    2,264
    Likes Received:
    1,735
    Trophy Points:
    181
    Google translate..

    Also I would standby as most people probably didn't know the fix was in the latest build as the bug is under embargo until tomorrow from what I've read. I would expect that we will be seeing a lot more benchmarks being released today and tomorrow.
     
    Raiderman likes this.
  10. ajc9988

    ajc9988 Death by a thousand paper cuts

    Reputations:
    1,092
    Messages:
    4,526
    Likes Received:
    6,276
    Trophy Points:
    581
    That is a reputable German site and fairly accurate. So no reason to discount the information. They are using a publicly available windows insider ring deployment to test that has been confirmed as having the kernel fix in the build. So, the report there is on the up and up so long as the final build has similar effects on performance, which we have seen variance to the negative in public releases compared to beta builds before.
     
    Raiderman and Talon like this.
Loading...

Share This Page