Hi, Denis
> Takayuki, have you tested it on 5ghz band?
blow shows my test result with channel 48, which is 5.24GHz.
I also got the pretty good throughput for 5GHz with 2.6.39-rc5-wl.
BTW, did you use fixed frequency in your test ? In my case, the
channel is fixed to 48 as show below.
root@RMR1:/# ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:0E:8E:13:A9:F6
inet addr:10.0.1.72 Bcast:10.0.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18513 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:27980008 (26.6 MiB) TX bytes:3672 (3.5 KiB)
root@RMR1:/# iwconfig wlan0
wlan0 IEEE 802.11abg ESSID:"test48"
Mode:Ad-Hoc Frequency:5.24 GHz Cell: 56:3E:BD:4D:5D:91
Tx-Power=20 dBm
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
root@RMR1:/# iperf -s -u -i 3.0 (==> command at the peer node :
iperf -c 10.0.1.72 -u -b 20M -t 100 )
------------------------------------------------------------
Server listening on UDP port 5001
Receiving 1470 byte datagrams
UDP buffer size: 108 KByte (default)
------------------------------------------------------------
[ 3] local 10.0.1.72 port 5001 connected with 192.168.1.242 port 54899
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 0.0- 3.0 sec 7.16 MBytes 20.0 Mbits/sec 0.170 ms 0/ 5105 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 3.0- 6.0 sec 7.15 MBytes 20.0 Mbits/sec 0.250 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 6.0- 9.0 sec 7.14 MBytes 20.0 Mbits/sec 0.499 ms 0/ 5093 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 9.0-12.0 sec 7.17 MBytes 20.0 Mbits/sec 0.244 ms 0/ 5112 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 12.0-15.0 sec 7.15 MBytes 20.0 Mbits/sec 0.107 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 15.0-18.0 sec 7.15 MBytes 20.0 Mbits/sec 0.253 ms 0/ 5101 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 18.0-21.0 sec 7.15 MBytes 20.0 Mbits/sec 0.239 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 21.0-24.0 sec 7.15 MBytes 20.0 Mbits/sec 0.218 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 24.0-27.0 sec 7.15 MBytes 20.0 Mbits/sec 0.172 ms 0/ 5102 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 27.0-30.0 sec 7.14 MBytes 20.0 Mbits/sec 0.483 ms 0/ 5095 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 30.0-33.0 sec 7.16 MBytes 20.0 Mbits/sec 0.307 ms 0/ 5110 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 33.0-36.0 sec 7.15 MBytes 20.0 Mbits/sec 0.175 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 36.0-39.0 sec 7.15 MBytes 20.0 Mbits/sec 0.285 ms 0/ 5102 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 39.0-42.0 sec 7.15 MBytes 20.0 Mbits/sec 0.210 ms 0/ 5103 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 42.0-45.0 sec 7.15 MBytes 20.0 Mbits/sec 0.250 ms 0/ 5102 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 45.0-48.0 sec 7.15 MBytes 20.0 Mbits/sec 0.218 ms 0/ 5102 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 48.0-51.0 sec 7.15 MBytes 20.0 Mbits/sec 0.368 ms 0/ 5097 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 51.0-54.0 sec 7.03 MBytes 19.7 Mbits/sec 0.182 ms 91/ 5107 (1.8%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 54.0-57.0 sec 7.16 MBytes 20.0 Mbits/sec 0.250 ms 0/ 5104 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 57.0-60.0 sec 7.15 MBytes 20.0 Mbits/sec 0.308 ms 0/ 5099 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 60.0-63.0 sec 7.16 MBytes 20.0 Mbits/sec 0.250 ms 0/ 5105 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 63.0-66.0 sec 7.15 MBytes 20.0 Mbits/sec 0.277 ms 0/ 5102 (0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 66.0-69.0 sec 7.15 MBytes 20.0 Mbits/sec 0.247 ms 0/ 5103 (0%)
But, it went into the crash again as reported yesterday. This seems to
be a issue of wireless-testing rather than ath5k.
BUG: unable to handle kernel NULL pointer dereference at 00000002
IP: [<c895fc3b>] ieee80211_rx_handlers+0x6ab/0x1a90 [mac80211]
*pde = 00000000
Oops: 0000 [#1] PREEMPT
last sysfs file: /sys/devices/pci0000:00/0000:00:0f.0/ieee80211/phy1/index
Modules linked in: scx200_wdt xt_NOTRACK iptable_raw xt_state
nf_defrag_ipv4 nf_conntrack pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG
xt_multiport xt_mac xt_limit iptable_mangle iptable_filte]
Pid: 0, comm: swapper Not tainted 2.6.39-rc5-wl #1
EIP: 0060:[<c895fc3b>] EFLAGS: 00010282 CPU: 0
EIP is at ieee80211_rx_handlers+0x6ab/0x1a90 [mac80211]
EAX: 00000000 EBX: c7bc1800 ECX: 00000001 EDX: c7a42634
ESI: c7809ee4 EDI: c7bb6022 EBP: c7809e54 ESP: c7809dd4
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process swapper (pid: 0, ti=c7808000 task=c139e300 task.ti=c1398000)
Stack:
0000003b c7809dec c1003f02 00000030 c7809e34 c7809e40 00000000 c7bc1800
c128f863 c7ae8364 c7809e14 c7809ee4 c7a42360 c7809e20 c7809e20 c1003f02
00000030 c7809e20 c102cdc3 c7809e00 00000000 ffffffff c7a42360 c7b91c18
Call Trace:
[<c1003f02>] ? handle_irq+0x12/0x80
[<c128f863>] ? do_IRQ+0x43/0x8d
[<c1003f02>] ? handle_irq+0x12/0x80
[<c102cdc3>] ? irq_exit+0x43/0x60
[<c1206914>] ? skb_queue_tail+0x54/0x60
[<c8961266>] ieee80211_prepare_and_rx_handle+0x246/0x8a0 [mac80211]
[<c1208802>] ? __alloc_skb+0x32/0x120
[<c8961c24>] ieee80211_rx+0x2e4/0x970 [mac80211]
[<c1208831>] ? __alloc_skb+0x61/0x120
[<c89e5ce8>] ath5k_tasklet_rx+0x308/0x850 [ath5k]
[<c1003f02>] ? handle_irq+0x12/0x80
[<c102cdc3>] ? irq_exit+0x43/0x60
[<c128f863>] ? do_IRQ+0x43/0x8d
[<c102c846>] tasklet_action+0xb6/0xd0
[<c102cfc7>] __do_softirq+0x77/0x1b0
[<c102cf50>] ? irq_enter+0x50/0x50
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