increase receive buffer size


  1. Posts : 8
    windows 7 professional
       #1

    increase receive buffer size


    Hi:

    I need to increase the "Receive buffer" in a windows 10 system running on a Core i3 10105 10th gen processor, 8GB RAM and 240GB SSD. The default was 512 and woudn't let me go past that. Funnily, on my laptop with Core i5 10th processor, 8GB RAM, it worked.

    Device manager -> Network adaptos -> Realtek -> Properties -> advanced Tab -> receive buffer.

    Could anyone guide how to go about it and whether this is chipset dependent or processor. Or something else.

    Thank you
      My Computer


  2. Posts : 23,796
    Win 10 Home ♦♦♦19045.4651 (x64) [22H2]
       #2

    neerajgs said:
    Hi:

    I need to increase the "Receive buffer" in a windows 10 system running on a Core i3 10105 10th gen processor, 8GB RAM and 240GB SSD. The default was 512 and woudn't let me go past that. Funnily, on my laptop with Core i5 10th processor, 8GB RAM, it worked.

    Device manager -> Network adaptos -> Realtek -> Properties -> advanced Tab -> receive buffer.

    Could anyone guide how to go about it and whether this is chipset dependent or processor. Or something else.

    Thank you

    You can set the Max size here...

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0001\Ndi\Params\*ReceiveBuffers

    I would try with various multiples of 128 or 256 or 512... etc.
    Make a note of what the value is for Max, "before" you start playing around with the number.
      My Computer


  3. Posts : 8
    windows 7 professional
    Thread Starter
       #3

    Hi and thank you for your response.

    I can't find the "Receive buffer" option. Do I need to create the folder/key? Also, this shows roaming aggressiveness which indicates it's a WiFi adaptor, but I need it on the wired adaptor / ethernet.

    Thanks
      My Computer

  4.   My Computer


  5. Posts : 18,034
    Win 10 Pro 64-bit v1909 - Build 18363 Custom ISO Install
       #5

    Hello @bro67,

    Out of interest, did you notice a substantial increase using the above ?

    As per the link above, you should be able to use something like this for example in a CMD Prompt:

    Code:
    
    REG ADD "HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" /v "IRPStackSize" /t REG_DWORD /d "30" /f

    I used 30 [ double the default value setting ] because of this quote:

    While there is little official Microsoft documentation concerning this parameter, the default setting is 15, which is adequate for most normal speed (10 Mbps) network connections. The maximum number is limited to 50, and Microsoft warns that choosing values in the 33 to 38 range can cause stability issues.
    Last edited by Paul Black; 27 May 2023 at 18:09.
      My Computer


  6. Posts : 282
    Windows 10 Pro
       #6

    I'm not sure if this is correct or not, but I think perhaps the receive buffer is limited by the network integrated card's chipset. So if it's increased (surpassing the driver's default setting) you'll just choke off the network card and have even worse performance...

    I could be wrong though.
      My Computer


  7. Posts : 18,034
    Win 10 Pro 64-bit v1909 - Build 18363 Custom ISO Install
       #7

    Hello @F22 Simpilot,

    F22 Simpilot said:
    I could be wrong though.
    NOT necessarily. I looked at a few sites and they seemed to recommend the above to increase transfer rates over a Local Network !
      My Computer


  8. Posts : 282
    Windows 10 Pro
       #8

    Sorry, I was refereeing to what the OP mentioned with this:


    Device manager -> Network adaptos -> Realtek -> Properties -> advanced Tab -> receive buffer.
    I should have quoted it.
      My Computer


 

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