Microsoft acknowledges slow NVMe SSD write speeds in Windows 11 - working on a fix.

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Dec 11, 2021.

  1. tsunami231

    tsunami231 Ancient Guru

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    from my understanding they knew about it also had fix for insiders, but RTM verison didnt have fixed included and wasnt for some time? wasnt it even fixed on insiders before RTM was even released? update bring bug all the time, I should know Roku update on my tv keep breaking same thing over and over. luckly the last update fixed it all again

    I do agree with there making thing dumber and worse for power users
     
  2. PrMinisterGR

    PrMinisterGR Ancient Guru

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    This one.
    Microsoft has more than 100,000 programmers employed. The problem is that at this point the source code of Windows is so large that they had to modify Git to be able to even work on it.

    https://arstechnica.com/information...s-source-in-a-monstrous-300gb-git-repository/
     
  3. shadex

    shadex Master Guru

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    Sigh.. this is bugging me:

    MP33 M.2 PCIe SSD using NVMe 1.3 protocol:
    https://www.teamgroupinc.com/en/upload/product_note_pic/c5b68811632bdcc2e516ca197fe7bf1d.jpg

    Read and Write should be 1,800 MBP/s.

    I am getting 800 MBPS both read and write. :\. See my benchmark:

    https://anonfiles.com/Hd58S20cv7/pix_jpg

    MSI B350 Tomahawk (AMD). See CPUz ID for more info:

    https://anonfiles.com/3aG1S508v2/pix2_jpg

    PCI-e bandwidth chart (for reference):

    https://anonfiles.com/b4HcSa0bv4/pix3_jpg

    Thanks.

    I may have a working theory behind this. Currently, I am using PCI-e adapter for NVM-e until I get some spart parts (screws) for my NVMe on my motherboard. A NVMe slot is a dedicated lane to the CPU unlike PCI-e x8/x16 slots? This might explains why I am only seeing 800 MBP/s.
     
    Last edited: Dec 14, 2021
  4. shadex

    shadex Master Guru

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    Update. After doing some research, I found out that my secondary PCIe slot is operating 2.0 x2 bandwidth which is 800 MBP/s because one of 2.0 x4 slot was used (PCIe x1). So I took it off and my speed was at (R): 1,400 MBP/s and (W): 500 MBP/s. I find that very odd because 1) with PCIe x1 in use, it operates both R/W at 800 MBP/s. By making PCIe x1 slot available, write speed seems to be a lot slower, but the read speed doubles. I wondered why.

    It wouldn't really matter because PCIe slots are on shared lanes anyways. M.2 is on dedicated lane, correct me if I am wrong. I will find out on the 29th once the correct screws for M.2 NVMe board arrives from MSI.
     

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