tested the network
over a one hop path with two ALIX router using two 11a cards (2.4GHz are
too crowed in
our buildings).
I'm attaching the results obtained with iperf. There is a significant
improvement however the
performances are still 4/5 mbps lower than what I could obtain from a
master/client connection.
At this point the only way to improve performance is to run wing using a
profiler.
R.
root@Wing:~# iperf -t 60 -i 1 -c 6.35.170.152
------------------------------------------------------------
Client connecting to 6.35.170.152, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 6.35.170.123 port 59636 connected with 6.35.170.152 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 1.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 1.0- 2.0 sec 2.75 MBytes 23.1 Mbits/sec
[ 3] 2.0- 3.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 3.0- 4.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 4.0- 5.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 5.0- 6.0 sec 3.13 MBytes 26.2 Mbits/sec
[ 3] 6.0- 7.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 7.0- 8.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 8.0- 9.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 9.0-10.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 10.0-11.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 11.0-12.0 sec 2.63 MBytes 22.0 Mbits/sec
[ 3] 12.0-13.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 13.0-14.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 14.0-15.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 15.0-16.0 sec 3.00 MBytes 25.2 Mbits/sec
[ 3] 16.0-17.0 sec 2.75 MBytes 23.1 Mbits/sec
[ 3] 17.0-18.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 18.0-19.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 19.0-20.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 20.0-21.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 21.0-22.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 22.0-23.0 sec 2.50 MBytes 21.0 Mbits/sec
[ 3] 23.0-24.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 24.0-25.0 sec 3.13 MBytes 26.2 Mbits/sec
[ 3] 25.0-26.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 26.0-27.0 sec 3.00 MBytes 25.2 Mbits/sec
[ 3] 27.0-28.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 28.0-29.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 29.0-30.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 30.0-31.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 31.0-32.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 32.0-33.0 sec 2.63 MBytes 22.0 Mbits/sec
[ 3] 33.0-34.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 34.0-35.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 35.0-36.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 36.0-37.0 sec 2.88 MBytes 24.1 Mbits/sec
[ 3] 37.0-38.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 38.0-39.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 39.0-40.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 40.0-41.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 41.0-42.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 42.0-43.0 sec 3.00 MBytes 25.2 Mbits/sec
[ 3] 43.0-44.0 sec 3.00 MBytes 25.2 Mbits/sec
[ 3] 44.0-45.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 45.0-46.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 46.0-47.0 sec 3.13 MBytes 26.2 Mbits/sec
[ 3] 47.0-48.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 48.0-49.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 49.0-50.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 50.0-51.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 51.0-52.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 52.0-53.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 53.0-54.0 sec 2.63 MBytes 22.0 Mbits/sec
[ 3] 54.0-55.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 55.0-56.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 56.0-57.0 sec 3.38 MBytes 28.3 Mbits/sec
[ 3] 57.0-58.0 sec 3.00 MBytes 25.2 Mbits/sec
[ 3] 58.0-59.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 59.0-60.0 sec 3.25 MBytes 27.3 Mbits/sec
[ 3] 0.0-60.1 sec 192 MBytes 26.8 Mbits/sec
Il 16/02/2011 15:37, le thanh son ha scritto:
> Thanks a lot for your email.
>
> I have tried to make new build from scratch for ALIX board (svn co from http://gforge.create-net.org/svn/wing and compile for ATH9K, AR9220 radio board)
>
> I have set up the wing-mesh and tried the performance.
> The result is that ping is OK, but when I used iperf to measure throughput, it shows just less than 10 Mbps with TCP ( with minstrel rate control and fcfs)
>
> root@Wing:/# iperf -c 6.111.9.55 -t 60 -i 10
> ------------------------------------------------------------
> Client connecting to 6.111.9.55, TCP port 5001
> TCP window size: 16.0 KByte (default)
> ------------------------------------------------------------
> [ 3] local 6.111.66.67 port 50312 connected with 6.111.9.55 port 5001
> [ ID] Interval Transfer Bandwidth
> [ 3] 0.0-10.0 sec 8.25 MBytes 6.92 Mbits/sec
> [ 3] 10.0-20.0 sec 11.1 MBytes 9.33 Mbits/sec
> [ 3] 20.0-30.0 sec 11.9 MBytes 9.96 Mbits/sec
> [ 3] 30.0-40.0 sec 11.1 MBytes 9.33 Mbits/sec
> [ 3] 40.0-50.0 sec 11.8 MBytes 9.86 Mbits/sec
> [ 3] 50.0-60.0 sec 12.1 MBytes 10.2 Mbits/sec
> [ 3] 0.0-60.4 sec 66.4 MBytes 9.22 Mbits/sec
> root@Wing:/#
>
> Two ALIX boards are just 1/2 m distance, so the signal is quite good
>
> The questions are:
>
> 1. What can maximum throughput rate expect ? How does throughput achieve at your experiment for Point-to-Point scenario ?
>
> 2. Where can I set the channels and bit rate ? where can I see the received signal strength ? I am sorry for ask this, as the wing-mesh is different compared to normal ATH9K AP-STA scenario.
>
> My config files on ALIXs are:
> --------------------------------------------
> root@Wing:/etc/config# cat wireless
> config wifi-device radio0
> option type mac80211
> option channel 36
> option macaddr
> option hwmode 11na
> option htmode HT20
> 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 1
>
> #config wifi-iface
> # option device radio0
> # option network lan
> # option mode ap
> # option ssid test1
> # option encryption none
>
> config wifi-iface
> option device radio0
> #option network lan
> option mode monitor
> option ssid mesh2
> option encryption none
>
> root@Wing:/etc/config# cat network
>
> config 'interface' 'loopback'
> option 'ifname' 'lo'
> option 'proto' 'static'
> option 'ipaddr' '127.0.0.1'
> option 'netmask' '255.0.0.0'
>
> config 'interface' 'lan'
> option 'ifname' 'eth0'
> option 'type' 'bridge'
> option 'proto' 'static'
> option 'ipaddr' '10.50.0.55'
>
>
>
>
> _______________________________________________
> Wing mailing list
> Wing@create-net-ml.org
> http://diana.create-net-ml.org/cgi-bin/mailman/listinfo/wing
>
--
--------------------------------------------------------
Roberto Riggio, Ph.D.
CREATE-NET
Network& Security Solutions for Pervasive Computing Systems (iNSPIRE)
Senior Researcher
Via alla Cascata 56/D - 38123 Povo Trento (Italy)
e-mail: roberto.riggio@create-net.org
Tel: (+39) 0461 408400 - interno/extension 708
Fax: (+39) 0461 421157
www.create-net.org/~rriggio
--------------------------------------------------------
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