On Tue, Mar 29, 2011 at 9:36 AM, Felix Fietkau <[email protected]> wrote:
>
> In order to debug this properly, please send a dump of the rate control
> stats of both sides:
> cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/*/rc_stats
>
> And also a dump of the channel busy time:
> iw wlan0 survey dump
>
> This might help narrow down the cause of this issue.
>
> - Felix
Felix, this is from the AP. Similar information from the CPE will
require a short trip since the connection is not good enough to
support ssh. Information from the CPE will follow shortly. This
information is before your recommended changes.
root@OpenWrt:~# cat /etc/config/wireless
config wifi-device radio0
option type mac80211
option channel 5
option macaddr 00:15:6d:4e:f1:46
option hwmode 11ng
option htmode HT5
list ht_capab SHORT-GI-40
list ht_capab TX-STBC
list ht_capab RX-STBC1
list ht_capab DSSS_CCK-40
# REMOVE THIS LINE TO ENABLE WIFI:
option disabled 0
option uapsd 0
config wifi-iface
option device radio0
option network lan
option mode ap
option ssid OpenWrt
option encryption none
root@OpenWrt:~# cat
/sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/*/rc_stats
type rate throughput ewma prob this prob this
succ/attempt success attempts
HT20/LGI t MCS0 6.1 98.5 100.0 0( 0)
148 199
HT20/LGI PMCS1 7.1 60.4 12.5 0( 0)
413 533
HT20/LGI MCS2 5.8 35.2 0.0 0( 0)
2183 2898
HT20/LGI MCS3 4.8 23.1 0.0 0( 0)
2743 4346
HT20/LGI MCS4 4.4 15.6 0.0 0( 0)
6744 12776
HT20/LGI MCS5 0.0 5.9 0.0 0( 0)
8 123
HT20/LGI MCS6 0.0 0.0 0.0 0( 0)
0 106
HT20/LGI MCS7 0.0 0.0 0.0 0( 0)
0 106
HT20/LGI T MCS8 9.6 82.2 100.0 1( 1)
267 392
HT20/LGI MCS9 7.4 35.7 25.0 0( 0)
4434 6183
HT20/LGI MCS10 0.0 0.0 0.0 0( 0)
110 398
HT20/LGI MCS11 0.0 0.0 0.0 0( 0)
2 106
HT20/LGI MCS12 0.0 0.0 0.0 0( 0)
0 104
HT20/LGI MCS13 0.0 0.0 0.0 0( 0)
0 106
HT20/LGI MCS14 0.0 0.0 0.0 0( 0)
0 106
HT20/LGI MCS15 0.0 0.0 0.0 0( 0)
0 106
Total packet count:: ideal 15455 lookaround 1661
Average A-MPDU length: 1.0
type rate throughput ewma prob this prob this
succ/attempt success attempts
HT20/LGI TtPMCS0 1.9 30.5 25.0 1( 4)
240 1331
HT20/LGI MCS1 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS2 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS3 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS4 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS5 0.0 5.9 0.0 0( 0)
1 46
HT20/LGI MCS6 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS7 0.0 0.0 0.0 0( 0)
0 3
HT20/LGI MCS8 0.0 6.9 0.0 0( 0)
35 174
HT20/LGI MCS9 0.0 9.2 0.0 0( 0)
27 108
HT20/LGI MCS10 0.0 6.9 0.0 0( 0)
14 115
HT20/LGI MCS11 0.0 0.0 0.0 0( 0)
0 2
HT20/LGI MCS12 0.0 0.0 0.0 0( 0)
0 1
HT20/LGI MCS13 0.0 0.0 0.0 0( 0)
0 3
HT20/LGI MCS14 0.0 0.0 0.0 0( 0)
0 3
HT20/LGI MCS15 0.0 0.0 0.0 0( 0)
0 3
Total packet count:: ideal 331 lookaround 36
Average A-MPDU length: 1.0
root@OpenWrt:~# iw wlan0 survey dump
Survey data from wlan0
frequency: 2412 MHz
noise: -97 dBm
channel active time: 37 ms
channel busy time: 12 ms
channel receive time: 0 ms
channel transmit time: 0 ms
Survey data from wlan0
frequency: 2417 MHz
Survey data from wlan0
frequency: 2422 MHz
Survey data from wlan0
frequency: 2427 MHz
Survey data from wlan0
frequency: 2432 MHz [in use]
noise: -107 dBm
channel active time: 108058390 ms
channel busy time: 21908872 ms
channel receive time: 3395958 ms
channel transmit time: 2010797 ms
Survey data from wlan0
frequency: 2437 MHz
Survey data from wlan0
frequency: 2442 MHz
Survey data from wlan0
frequency: 2447 MHz
Survey data from wlan0
frequency: 2452 MHz
Survey data from wlan0
frequency: 2457 MHz
Survey data from wlan0
frequency: 2462 MHz
Survey data from wlan0
frequency: 2467 MHz
Survey data from wlan0
frequency: 2472 MHz
Survey data from wlan0
frequency: 2484 MHz
root@OpenWrt:~#
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