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New functions for bandwidth measurement

Discussion in 'Multiplayer' started by moco2k, Apr 20, 2017.

  1. moco2k

    moco2k

    Joined:
    Apr 29, 2015
    Posts:
    294
    Hey everyone,

    the release notes for the latest patch 5.6.0p1 include the following:

    Networking: Added new statistical functions allowing measure bandwidth per connection per host or per lib.

    I haven't found any docs on this so far.
    Does anyone know if there are some docs already? Respectively, how this new feature can be used? I would really appreciate something like a small tutorial on how to measure bandwidth consumption for UNET-based games.

    Thanks in advance!
     
    moco2k, Apr 20, 2017
    #1

  2. DBronson

    DBronson

    Unity Technologies

    Joined:
    Oct 1, 2016
    Posts:
    12
    Here is a quick rundown of the various functions:

    • GetIncomingMessageQueueSize - how many messages waiting for consuming (for host)
    • GetOutgoingMessageQueueSize - how many messages waiting for sending (for host)
    • GetCurrentRTT - current round trip time measured in the last ping period, NOT AVERAGED (per connection)
    • GetIncommingPacketLoss - how many incoming packets were lost in network (network packet drop count)
    • GetIncommingPacketCount - how many packets have been sent to us (including lost packet): (for ex: from the start sent 200 packets, where 10 packets were lost in transmitting)
    • GetOutgoingPacketNetworkLostPercent - how many outgoing packet were lost in transmitting (I have sent 100 packets to somebody, 5% of them were lost while transmitting)
    • GetOutgoingPacketOverflowLostPercent - how many outgoing packets were lost due incoming queue overfull (I have sent 100 packets, 7% of them were dropped by peer, because it does not have resources to handle them)
    • GetMaxAllowedBandwidth - what is the current allowed bandwidth. (Initially I set up 1 MB per sec, but due to big % overfull packet loss, library changed this value to 500kB/sec; 500kb/sec == MaxAllowedBandwidth)
    • GetAckBufferCount - how many slots in Acknowledged buffer have been occupied (my buffer size has 32 slots, current size is 31, most probably if I send 2 reliable messages, second one will not send,
      or, my AckBufferCountpersistently about 31, and I periodically get false while I send something -> I need change isAckLong to true )
    • GetIncomingPacketCountForAllHosts - how many incoming packets were dropped due lack space in incoming queue (I receive 100 packets per sec, while I read only one per sec, in 10 sec I will receive 1000 packets where 990 will be dropped)
    • GetIncommingPacketCountForAllHosts - how many incoming packets I received (so far: from game start I received 100000 packets) (see this function name is not correlated with GetIncomingPacketDropNumber() name and possible should be changed)
     
    DBronson, Apr 20, 2017
    #2
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