32
Technical Data
2.1.9
Ethernet Performance / Latency vs. Throughput
For small amounts of data, latency is relatively equal regardless of the packet size.
NOTE:
For larger amounts of data, Ethernet throughput is equal regardless of the
packet size. Only latency varies.
Packet
Size
Throughput
(Kbps)
Latency
(usec)
64
100
196
128
100
200
256
100
208
512
100
224
768
100
240
1024
100
256
1280
100
272
1518
100
286
Table 2.24
Typical Latency @ 56 MHz / 64QAM
Coding & Modulation Schemes
Modulation
QPSK
8PSK
16 QAM
32 QAM
64 QAM
128 QAM
256 QAM
Code Rate
3/4
15/19
15/19
5/6
8/9
9/10
11/12
Throughput (Mbps)
13
21
28
37
47
56
65
64-
Byte
Packet
Max Delay
(usec)
2202
1398
1062
809
982
979
978
Min Delay
(usec)
2198
1382
1053
800
973
971
969
1518-
Byte
Packet
Max Delay
(usec)
3122
1989
1515
1159
1269
1225
1194
Min Delay
(usec)
3111
1977
1508
1153
1255
1213
1184
5000-
Byte
Packet
Max Delay
(usec)
5350
3420
2610
2011
1939
1807
1705
Min Delay
(usec)
5326
3403
2596
1999
1933
1795
1699
Table 2.25
10 MHz Bandwidth
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