Sprzęt masz nowszy niż ja 😉 (u mnie ciągle siedzi AMX FX 8320) nie mniej jednak tak jak już Ci doradzono testy należy wykonywać dedykowanymi aplikacjami i /lub możesz dodatkowo sprawdzić prędkośc do FB6 z poziomu samego FB (u mnie pokazuje ok 1.1 Gbps i taka prędkość pokrywa się gdy równocześnie uruchomię test na dwóch urządzeniach).
1 Gbps nigdy nie wyniesie w sieci ethernet dokładnie 1000 Mbps z uwagi na (rozłożone na czynnki p :
"(...)
This is because overhead information, to handle the TCP/IP based Ethernet communication itself. Take my word for it 949.2Mbit/s is about as fast as you can get in reality. And that 949.2Mbit/s of useful data is actually 1000Mbit/s of transferred data-bits over the gigabit-speed Internet connection.
Lets us break it down.
Ethernet.
Ethernet frame - Wikipedia
1500Bytes of payload go into each Ethernet packet going into the Internet.
7 Bytes go to the preamble.
1 Byte to start of frame
6 Bytes to MAC destination
6 Bytes to MAC source
2 Bytes to Ethernet type
4 Bytes to CRC frame Check Sequence
12 Bytes to the inter-packet gap
That is a total of 38 Byte, but it will be more overhead…
Or 1500/1538=0.9753
Then comes the IP frame a total of 24 Bytes
IPv4 - Wikipedia
Then comes the TCP frame a total of 16 Bytes
Transmission Control Protocol - Wikipedia
2 Byte source port
2 Byte destination port
4 Byte sequence number
4 Byte Acknowledgment number
2 Byte with various flags to indicate stuff
2 Byte Window size
2 Byte Checksum
2 Byte Urgent pointer
So a total of 78 Bytes of Ethernet + TCP/IP overhead 1460/1538=0.94928 of 1000Mbit/s and that is 949Mbit/s data throughput in reality.
I also think that some extra overhead is missing that I have forgotten (like VLAN tagging).
I am as an example a little bit curious about the “Options” section that can be from zero to 40Bytes.
I have also found this.
TCP Over IP Bandwidth Overhead
