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Surface Laptop Studio 2 shows high latency during startup of LinqPad

EricHarmonEricHarmon

I have had a Surface Laptop Studio (the original one) for a couple years, and never had a problem with LinqPad or anything else. I bought a Surface Laptop Studio 2 the other day, and when I start LinqPad, it shows me SSD latency of about 500 ms. Disk performance utilities showed poor random access times so I returned the computer and got another to replace it. I have exactly the same issue. Is anyone else seeing an issue with the Surface Laptop Studio 2? I have literally nothing installed on this new one except all Windows updates, and LinqPad. I can't believe Microsoft would be putting horrible SSDs in the new Laptop Studio, so I'm thinking I must be missing something.

I do have a 50 GB DevDrive created.

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  • JohnASmithJohnASmith

    I have these messages too even with Defender real time turned off, also on a Surface but a new 15" Surface Laptop 7 (Arm64). In task manager the SSD appears to be SkHynix.

    The LINQPad Antivirus Performance test reports these numbers with real time protection off

    Test 1 - 450.725 milliseconds
    Test 2 - 580.491 milliseconds
    Test 3 - 460.048 milliseconds
    Test 4 - 533.671 milliseconds
    Test 5 - 388.476 milliseconds
    Test 6 - 438.63 milliseconds
    Test 7 - 499.581 milliseconds
    Test 8 - 424.295 milliseconds
    Test 9 - 501.542 milliseconds
    Test 10 - 480.956 milliseconds

    For comparison, an Intel x64 13900KS desktop system with Samsung 990 Pro 1TB yields (with Defender real time protection on)

    Test 1 - 8.542 milliseconds
    Test 2 - 0.318 milliseconds
    Test 3 - 0.551 milliseconds
    Test 4 - 0.551 milliseconds
    Test 5 - 0.474 milliseconds
    Test 6 - 0.515 milliseconds
    Test 7 - 0.467 milliseconds
    Test 8 - 0.228 milliseconds
    Test 9 - 0.296 milliseconds
    Test 10 - 0.585 milliseconds

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  • JohnASmithJohnASmith

    I stumbled into this thread because I was searching on Surface related problems but I missed this one

    https://forum.linqpad.net/discussion/3057/antivirus-performance-test

    Turning on defender switches on yields

    Test 1 - 612.412 milliseconds
    Test 2 - 412.698 milliseconds
    Test 3 - 656.689 milliseconds
    Test 4 - 423.792 milliseconds
    Test 5 - 506.693 milliseconds
    Test 6 - 511.122 milliseconds
    Test 7 - 463.499 milliseconds
    Test 8 - 417.623 milliseconds
    Test 9 - 432.6 milliseconds
    Test 10 - 386.19 milliseconds

    Disabling "Cloud-delivered protection" in Virus & Threat protections yields

    Test 1 - 79.641 milliseconds
    Test 2 - 82.83 milliseconds
    Test 3 - 85.642 milliseconds
    Test 4 - 65.878 milliseconds
    Test 5 - 68.429 milliseconds
    Test 6 - 78.206 milliseconds
    Test 7 - 73.886 milliseconds
    Test 8 - 64.587 milliseconds
    Test 9 - 92.348 milliseconds
    Test 10 - 58.781 milliseconds

    Real-time protection turn off yields

    Test 1 - 46.878 milliseconds
    Test 2 - 32.298 milliseconds
    Test 3 - 40.822 milliseconds
    Test 4 - 27.164 milliseconds
    Test 5 - 27.565 milliseconds
    Test 6 - 39.737 milliseconds
    Test 7 - 48.325 milliseconds
    Test 8 - 30.624 milliseconds
    Test 9 - 30.912 milliseconds
    Test 10 - 34.635 milliseconds

    So cloud-delivered protection seems to be the main culprit.

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