[Prism54-users] Prism54 performance revisited ...

[feyd@seznam.cz]

Replaced the stick in eth1 by 10dBi antena about 1m far from the stick in eth2
I get results like below 100% repeatedly:

tcpspray -b1048576 -n 100 -e 192.168.1.2
Transmitted 104857600 bytes in 68.458243 seconds (1495.802 kbytes/s)
Received 104857600 bytes in 68.498439 seconds (1494.925 kbytes/s)

tcpspray -b1048576 -n 100 192.168.1.2
Transmitted 104857600 bytes in 36.401067 seconds (2813.104 kbytes/s)

iwconfig
eth1      PRISM Duette/GT  ESSID:"x"
          Mode:Master  Frequency:2.442GHz  Access Point: 00:04:E2:80:9C:8E
          Bit Rate:54Mb/s   Sensitivity=20/200
          Retry min limit:8   RTS thr:2347 B   Fragment thr:2346 B
          Encryption key:off
          Link Quality:250  Signal level:0  Noise level:67
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth2      PRISM Duette/GT  ESSID:"x"
          Mode:Managed  Frequency:2.442GHz  Access Point: 00:04:E2:80:9C:8E
          Bit Rate:54Mb/s   Sensitivity=20/200
          Retry min limit:8   RTS thr:2347 B   Fragment thr:2346 B
          Encryption key:off
          Link Quality:118/0  Signal level:-31 dBm  Noise level:-174 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0


ie
echo:      23.35Mbit/s
discard:   21.98Mbit/s


I read in a book that at 54Mbit/s the bandwidth for data is about 22Mbit/s and
the rest is consumed by overhead of the 802.11g protocol. Is it true?


Feyd