Windows 10: Intermittent UDP drops in Windows 10 OS

  1.    16 Mar 2018 #1

    Intermittent UDP drops in Windows 10 OS


    Hi,
    I have a receiver-side NDIS ETL capture. It shows packets in order and all present. I also have an application receiving data off of the socket. The application misses some data, and the data is occasionally in the wrong order.
    The application is receiving multicast UDP via a LAN. The loss is apx. 0.01% of data received. While UDP delivery and ordering aren't guaranteed by the protocol and the throughput isn't terrible, I want to understand why the OS would drop the data.
    It doesn't need to be lossless, but I want to first identify where the packets are being lost (e.g. in some finite kernel buffer), then find the threshold (e.g. after 64MB of queued data).
    Any tips or ideas on steps to take would be greatly appreciated.
      My ComputerSystem Spec

  2.    16 Mar 2018 #2

    Welcome to the forum. Its not very clear what your asking dropped packets are often due to having full duplex set as most domestic router cant handle it. udp doesnt make a connection so there is no real trace
      My ComputerSystem Spec

  3.    16 Mar 2018 #3

    Thanks for the welcoming.

    So the interesting thing is that the receivers NDIS later processes the packets.

    The packets go through the sender, the network including cabling, hit the receivers nic, NDIS, go to the receivers OS, the socket, and finally the appplication.

    Iím specifically seeing data at the NDIS layer and not the socket/application. Why would the OS drop the data?

    Thanks
      My ComputerSystem Spec


 

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