Hello ,
    I   us   qperf   tool  test  delay  of  network  card  , result is 55us , 
The theoretical velocity should be 19,000, and the actual velocity is 7,800.
    What are the reasons for the difference?

   tcp_bw:
    bw        =  2.02 MB/sec
    msg_size  =     1 bytes
tcp_bw:
    bw        =  4.52 MB/sec
    msg_size  =     2 bytes
tcp_bw:
    bw        =  8.8 MB/sec
    msg_size  =    4 bytes
tcp_bw:
    bw        =  17.4 MB/sec
    msg_size  =     8 bytes
tcp_bw:
    bw        =  33.1 MB/sec
    msg_size  =    16 bytes
tcp_bw:
    bw        =  62.5 MB/sec
    msg_size  =    32 bytes
tcp_bw:
    bw        =  116 MB/sec
    msg_size  =   64 bytes

tcp_lat:
    latency   =  56.3 us
    msg_size  =     1 bytes
tcp_lat:
    latency   =  55.5 us
    msg_size  =     2 bytes
tcp_lat:
    latency   =  54.9 us
    msg_size  =     4 bytes
tcp_lat:
    latency   =  55.6 us
    msg_size  =     8 bytes
tcp_lat:
    latency   =  55.4 us
    msg_size  =    16 bytes
tcp_lat:
    latency   =  55.4 us
    msg_size  =    32 bytes
tcp_lat:
    latency   =  55.7 us
    msg_size  =    64 bytes

-- 
Best regards,
 $)ARWUq;*                          mailto:[email protected]

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