Hi, Thomas, Javier and Fabrice
Multihop for secured mesh using HT is working now. Before that, I have the
problem of "low throughput" for multihop scenario using the ath9k patch I
posted.
Thanks to Fabrice. I configure the rate adaptation algorithm for ath9k to
Minstrel. Everythings work fine now, even the contention problem is gone.
Regards,
Chun-Yeow
# iperf -c 10.44.29.245 -i 1 -u -b 100M -t 10
------------------------------------------------------------
Client connecting to 10.44.29.245, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 108 KByte (default)
------------------------------------------------------------
[ 3] local 10.44.29.154 port 34096 connected with 10.44.29.245 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 1.0 sec 11.4 MBytes 95.8 Mbits/sec
[ 3] 1.0- 2.0 sec 11.6 MBytes 97.1 Mbits/sec
[ 3] 2.0- 3.0 sec 11.6 MBytes 97.5 Mbits/sec
[ 3] 3.0- 4.0 sec 11.7 MBytes 97.8 Mbits/sec
[ 3] 4.0- 5.0 sec 11.6 MBytes 97.3 Mbits/sec
[ 3] 5.0- 6.0 sec 11.6 MBytes 97.4 Mbits/sec
[ 3] 6.0- 7.0 sec 11.7 MBytes 97.9 Mbits/sec
[ 3] 7.0- 8.0 sec 11.6 MBytes 97.1 Mbits/sec
[ 3] 8.0- 9.0 sec 11.6 MBytes 97.7 Mbits/sec
[ 3] 9.0-10.0 sec 11.7 MBytes 97.9 Mbits/sec
[ 3] 0.0-10.0 sec 116 MBytes 97.3 Mbits/sec
[ 3] Sent 82771 datagrams
[ 3] Server Report:
[ 3] 0.0-10.5 sec 37.8 MBytes 30.2 Mbits/sec 0.489 ms 55822/82772
(67%)
# iw mesh0 station dump
Station 0a:0b:6b:b6:5c:3c (on mesh0)
inactive time: 720 ms
rx bytes: 100243
rx packets: 1407
tx bytes: 0
tx packets: 0
tx retries: 0
tx failed: 0
signal: -46 dBm
signal avg: -46 dBm
tx bitrate: 6.0 MBit/s
rx bitrate: 6.0 MBit/s
mesh llid: 0
mesh plid: 0
mesh plink: LISTEN
authorized: no
authenticated: no
preamble: long
WMM/WME: no
MFP: no
Station 0a:0b:6b:7d:e3:b9 (on mesh0)
inactive time: 310 ms
rx bytes: 540863
rx packets: 5059
tx bytes: 209912902
tx packets: 134977
tx retries: 669123
tx failed: 0
signal: -52 dBm
signal avg: -52 dBm
tx bitrate: 65.0 MBit/s MCS 7
rx bitrate: 65.0 MBit/s MCS 7
mesh llid: 0
mesh plid: 0
mesh plink: ESTAB
authorized: yes
authenticated: yes
preamble: long
WMM/WME: no
MFP: yes
# cat /sys/kernel/debug/ieee80211/phy0/netdev\:mesh0/statio
ns/0a\:0b\:6b\:7d\:e3\:b9/rc_stats
type rate throughput ewma prob this prob this succ/attempt
success attempts
HT20/LGI MCS0 6.3 95.7 100.0 0( 0)
43 50
HT20/LGI MCS1 6.8 51.6 0.0 0( 0)
41 48
HT20/LGI MCS2 18.0 92.2 100.0 0( 0)
38 43
HT20/LGI MCS3 23.7 92.0 100.0 0( 0)
47 49
HT20/LGI MCS4 35.4 93.3 100.0 0( 0)
38 43
HT20/LGI MCS5 40.1 81.5 100.0 0( 0)
80 86
HT20/LGI t MCS6 46.0 84.2 68.5 0( 0)
8187 8953
HT20/LGI T PMCS7 58.2 95.0 100.0 1( 1)
126331 141867
HT20/LGI MCS8 11.6 88.1 100.0 0( 0)
43 52
HT20/LGI MCS9 22.1 85.7 100.0 0( 0)
42 51
HT20/LGI MCS10 37.0 97.4 100.0 0( 0)
18 41
HT20/LGI MCS11 26.6 54.0 100.0 0( 0)
26 42
HT20/LGI MCS12 0.0 0.0 0.0 0( 0)
4 344
HT20/LGI MCS13 0.0 0.0 0.0 0( 0)
0 344
HT20/LGI MCS14 0.0 0.0 0.0 0( 0)
0 344
HT20/LGI MCS15 0.0 0.0 0.0 0( 0)
0 343
Total packet count:: ideal 132728 lookaround 2210
Average A-MPDU length: 7.4
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