Date: Wed, 12 Dec 2012 14:39:18 +0300 From: Johann Hugo <jhugo@meraka.csir.co.za> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: Re: [ath] Degraded throughput - adhoc mode Message-ID: <3370418.NcHjDjozy9@jeep> In-Reply-To: <CAJ-Vmomy3LXsumnbwpKt9nTnmBt=vZaHfK_meug32c5ga-1bpw@mail.gmail.com> References: <201205181133.57403.jhugo@meraka.csir.co.za> <CAJ-Vmo=V=EUEVs-_7tj8CQa6oNzyzZySrTQweQVNsS22LdCiWw@mail.gmail.com> <CAJ-Vmomy3LXsumnbwpKt9nTnmBt=vZaHfK_meug32c5ga-1bpw@mail.gmail.com>
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On Sunday, December 09, 2012 04:18:45 PM Adrian Chadd wrote:
> Ok, I've just taught the aggressive mode logic about IBSS. It's pretty
> dirty - I may cop some hate for enabling aggressive mode for IBSS as
> each IBSS node doesn't know about the overall voice/video data rates.
> That's how it works in AP mode - the AP tracks the traffic it is
> sending/receiving and changes its configuration based on that. It
> can't take into account overlapping BSSes.
>
> In any case, can you just try that out in your lab and let me know how it
> goes?
Great, I'm now getting the same throughput for ADHOC and AP/STA mode.
mesh-2870:~ # uname -a
FreeBSD mesh-2870 10.0-CURRENT FreeBSD 10.0-CURRENT #15: Wed Dec 12 11:38:06
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:02:6f:41:19:09
inet6 fe80::202:6fff:fe41:1909%wlan0 prefixlen 64 scopeid 0x7
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet autoselect mode 11a <adhoc>
status: running
ssid mesh channel 128 (5640 MHz 11a) bssid 02:88:99:fe:ca:00
regdomain NONE country ZA ecm authmode OPEN privacy OFF txpower 24
mcastrate 6 mgmtrate 6 scanvalid 60 wme burst
mesh-2870:~ # ifconfig wlan0 list wme
AC_BE cwmin 4 cwmax 10 aifs 3 txopLimit 0
AC_BK cwmin 4 cwmax 10 aifs 7 txopLimit 0
AC_VI cwmin 3 cwmax 4 aifs 2 txopLimit 94
AC_VO cwmin 2 cwmax 3 aifs 2 txopLimit 47
mesh-2870:~ # ifconfig wlan0 wme aifs be 2 cwmin be 4 cwmax be 10 txoplimit
be 64
mesh-2870:~ # iperf -V -c fe80::202:6fff:fe41:1908%wlan0
------------------------------------------------------------
Client connecting to fe80::202:6fff:fe41:1908%wlan0, TCP port 5001
TCP window size: 40.1 KByte (default)
------------------------------------------------------------
[ 3] local fe80::202:6fff:fe41:1909 port 60833 connected with
fe80::202:6fff:fe41:1908 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 34.4 MBytes 28.8 Mbits/sec
mesh-2870:~ # iperf -V -c fe80::202:6fff:fe41:1908%wlan0
------------------------------------------------------------
Client connecting to fe80::202:6fff:fe41:1908%wlan0, TCP port 5001
TCP window size: 40.1 KByte (default)
------------------------------------------------------------
[ 3] local fe80::202:6fff:fe41:1909 port 41099 connected with
fe80::202:6fff:fe41:1908 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 34.6 MBytes 29.0 Mbits/sec
Did you manage to figure out why the wme setting changes back when the
interface if taken down/up ?
Johann
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From: Johann Hugo <jhugo@meraka.csir.co.za>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: 11n in adhoc mode
Date: Wed, 12 Dec 2012 15:29:14 +0300
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On Wednesday, December 12, 2012 01:58:38 AM Adrian Chadd wrote:
> Here's what I have trimmed this down to so far:
>
> http://people.freebsd.org/~adrian/ath/20121212-11n-ibss-and-other-stuff-3.di
> ff
>
> Please disable ampdu for now (ifconfig wlanX -ampdu) as it just plain
> doesn't work.
> I'll figure out why once I figure out the cleanest way to get this 11n
> IBSS stuff working.
>
> I've tested this between two 11n nodes and a third 11a only node.
> So far it works out ok. But it obviously could do with a lot more
> thorough testing.
>
> I'd appreciate feedback!
>
No luck. Maybe I'm missing some settings ?
mesh-2870:~ # uname -a
FreeBSD mesh-2870 10.0-CURRENT FreeBSD 10.0-CURRENT #15: Wed Dec 12 11:38:06
rc.conf
create_args_wlan1="wlanmode adhoc country ZA"
ifconfig_wlan1="10.50.50.2/24 ssid testADHOC channel 28:ht/40 -ampdu bssid
02:8c:ca:fe:ca:10"
mesh-2870:~ # ifconfig wlan1
wlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:0c:42:6c:63:20
inet 10.50.50.2 netmask 0xffffff00 broadcast 10.50.50.255
inet6 fe80::20c:42ff:fe6c:6320%wlan1 prefixlen 64 scopeid 0x8
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet autoselect mode 11na <adhoc>
status: running
ssid testADHOC channel 28 (5140 MHz 11a ht/40-) bssid
02:8c:ca:fe:ca:10
regdomain NONE country ZA ecm authmode OPEN privacy OFF txpower 17
mcastrate 6 mgmtrate 6 scanvalid 60 -ampdu ampdulimit 8k
ampdudensity 8 shortgi wme burst
mesh-2870:~ # ifconfig wlan1 list chan
Channel 1 : 2412 MHz 11g ht Channel 52 : 5260* MHz 11a ht
Channel 2 : 2417 MHz 11g ht Channel 56 : 5280* MHz 11a ht
Channel 3 : 2422 MHz 11g ht Channel 60 : 5300* MHz 11a ht
Channel 4 : 2427 MHz 11g ht Channel 64 : 5320* MHz 11a ht
Channel 5 : 2432 MHz 11g ht Channel 100 : 5500* MHz 11a ht
Channel 6 : 2437 MHz 11g ht Channel 104 : 5520* MHz 11a ht
Channel 7 : 2442 MHz 11g ht Channel 108 : 5540* MHz 11a ht
Channel 8 : 2447 MHz 11g ht Channel 112 : 5560* MHz 11a ht
Channel 9 : 2452 MHz 11g ht Channel 116 : 5580* MHz 11a ht
Channel 10 : 2457 MHz 11g ht Channel 120 : 5600* MHz 11a ht
Channel 11 : 2462 MHz 11g ht Channel 124 : 5620* MHz 11a ht
Channel 12 : 2467* MHz 11g ht Channel 128 : 5640* MHz 11a ht
Channel 13 : 2472* MHz 11g ht Channel 132 : 5660* MHz 11a ht
Channel 24 : 5120* MHz 11a ht Channel 136 : 5680* MHz 11a ht
Channel 28 : 5140* MHz 11a ht Channel 140 : 5700* MHz 11a ht
Channel 32 : 5160* MHz 11a ht Channel 149 : 5745* MHz 11a ht
Channel 36 : 5180* MHz 11a ht Channel 153 : 5765* MHz 11a ht
Channel 40 : 5200* MHz 11a ht Channel 157 : 5785* MHz 11a ht
Channel 44 : 5220* MHz 11a ht Channel 161 : 5805* MHz 11a ht
Channel 48 : 5240* MHz 11a ht Channel 165 : 5825* MHz 11a ht
mesh-2870:~ # ifconfig wlan1 list sta
ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG
00:0c:42:6c:63:20 0 28 0M 18.0 300 21 0 I A
00:0c:42:6c:61:91 0 28 54M 17.5 0 122 1552 I AQ HTCAP
WME
mesh-2870:~ # athratestats -i ath1 -m 00:0c:42:6c:61:91
static_rix (-1) ratemask 0x0
[ 250] cur rate 54 Mb since switch: packets 1 ticks 142385
[ 250] last sample (6 Mb) cur sample (0 ) packets sent 122
[ 250] packets since sample 1 sample tt 0
[1600] cur rate 54 Mb since switch: packets 1 ticks 93578
[1600] last sample (6 Mb) cur sample (0 ) packets sent 3
[1600] packets since sample 3 sample tt 0
TX Rate TXTOTAL:TXOK EWMA T/ F avg last xmit
[36 Mb: 250] 1:1 (100.0%) 1/ 0 464uS 6977
[36 Mb:1600] 1:1 (100.0%) 1/ 0 764uS 93021
[54 Mb: 250] 121:121 (100.0%) 121/ 0 444uS 142385
[54 Mb:1600] 2:2 (100.0%) 2/ 0 644uS 93578
Johann
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Subject: Re: 11n in adhoc mode
From: Adrian Chadd <adrian@freebsd.org>
To: Johann Hugo <jhugo@meraka.csir.co.za>
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Let me do some more digging. If you set the channel like that you run
through a different code path to if you do it via scanning.
Also, I did tidy up and remove some code before I posted that diff.
Maybe some of it was needed.
mesh-2870:~ # athratestats -i ath1 -m 00:0c:42:6c:61:91
static_rix (-1) ratemask 0x0
See that? The ratemask is all wrong, even for an 11a/11bg node. Maybe
how it learnt about the second node was via a different code path..
Adrian
On 12 December 2012 04:29, Johann Hugo <jhugo@meraka.csir.co.za> wrote:
> On Wednesday, December 12, 2012 01:58:38 AM Adrian Chadd wrote:
>
>> Here's what I have trimmed this down to so far:
>
>>
>
>>
>> http://people.freebsd.org/~adrian/ath/20121212-11n-ibss-and-other-stuff-3.di
>
>> ff
>
>>
>
>> Please disable ampdu for now (ifconfig wlanX -ampdu) as it just plain
>
>> doesn't work.
>
>> I'll figure out why once I figure out the cleanest way to get this 11n
>
>> IBSS stuff working.
>
>>
>
>> I've tested this between two 11n nodes and a third 11a only node.
>
>> So far it works out ok. But it obviously could do with a lot more
>
>> thorough testing.
>
>>
>
>> I'd appreciate feedback!
>
>>
>
>
>
> No luck. Maybe I'm missing some settings ?
>
>
>
> mesh-2870:~ # uname -a
>
> FreeBSD mesh-2870 10.0-CURRENT FreeBSD 10.0-CURRENT #15: Wed Dec 12 11:38:06
>
>
>
> rc.conf
>
> create_args_wlan1="wlanmode adhoc country ZA"
>
> ifconfig_wlan1="10.50.50.2/24 ssid testADHOC channel 28:ht/40 -ampdu bssid
> 02:8c:ca:fe:ca:10"
>
>
>
> mesh-2870:~ # ifconfig wlan1
>
> wlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>
> ether 00:0c:42:6c:63:20
>
> inet 10.50.50.2 netmask 0xffffff00 broadcast 10.50.50.255
>
> inet6 fe80::20c:42ff:fe6c:6320%wlan1 prefixlen 64 scopeid 0x8
>
> nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>
> media: IEEE 802.11 Wireless Ethernet autoselect mode 11na <adhoc>
>
> status: running
>
> ssid testADHOC channel 28 (5140 MHz 11a ht/40-) bssid 02:8c:ca:fe:ca:10
>
> regdomain NONE country ZA ecm authmode OPEN privacy OFF txpower 17
>
> mcastrate 6 mgmtrate 6 scanvalid 60 -ampdu ampdulimit 8k
>
> ampdudensity 8 shortgi wme burst
>
>
>
> mesh-2870:~ # ifconfig wlan1 list chan
>
> Channel 1 : 2412 MHz 11g ht Channel 52 : 5260* MHz 11a ht
>
> Channel 2 : 2417 MHz 11g ht Channel 56 : 5280* MHz 11a ht
>
> Channel 3 : 2422 MHz 11g ht Channel 60 : 5300* MHz 11a ht
>
> Channel 4 : 2427 MHz 11g ht Channel 64 : 5320* MHz 11a ht
>
> Channel 5 : 2432 MHz 11g ht Channel 100 : 5500* MHz 11a ht
>
> Channel 6 : 2437 MHz 11g ht Channel 104 : 5520* MHz 11a ht
>
> Channel 7 : 2442 MHz 11g ht Channel 108 : 5540* MHz 11a ht
>
> Channel 8 : 2447 MHz 11g ht Channel 112 : 5560* MHz 11a ht
>
> Channel 9 : 2452 MHz 11g ht Channel 116 : 5580* MHz 11a ht
>
> Channel 10 : 2457 MHz 11g ht Channel 120 : 5600* MHz 11a ht
>
> Channel 11 : 2462 MHz 11g ht Channel 124 : 5620* MHz 11a ht
>
> Channel 12 : 2467* MHz 11g ht Channel 128 : 5640* MHz 11a ht
>
> Channel 13 : 2472* MHz 11g ht Channel 132 : 5660* MHz 11a ht
>
> Channel 24 : 5120* MHz 11a ht Channel 136 : 5680* MHz 11a ht
>
> Channel 28 : 5140* MHz 11a ht Channel 140 : 5700* MHz 11a ht
>
> Channel 32 : 5160* MHz 11a ht Channel 149 : 5745* MHz 11a ht
>
> Channel 36 : 5180* MHz 11a ht Channel 153 : 5765* MHz 11a ht
>
> Channel 40 : 5200* MHz 11a ht Channel 157 : 5785* MHz 11a ht
>
> Channel 44 : 5220* MHz 11a ht Channel 161 : 5805* MHz 11a ht
>
> Channel 48 : 5240* MHz 11a ht Channel 165 : 5825* MHz 11a ht
>
>
>
> mesh-2870:~ # ifconfig wlan1 list sta
>
> ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG
>
> 00:0c:42:6c:63:20 0 28 0M 18.0 300 21 0 I A
>
> 00:0c:42:6c:61:91 0 28 54M 17.5 0 122 1552 I AQ HTCAP WME
>
>
>
> mesh-2870:~ # athratestats -i ath1 -m 00:0c:42:6c:61:91
>
> static_rix (-1) ratemask 0x0
>
> [ 250] cur rate 54 Mb since switch: packets 1 ticks 142385
>
> [ 250] last sample (6 Mb) cur sample (0 ) packets sent 122
>
> [ 250] packets since sample 1 sample tt 0
>
>
>
> [1600] cur rate 54 Mb since switch: packets 1 ticks 93578
>
> [1600] last sample (6 Mb) cur sample (0 ) packets sent 3
>
> [1600] packets since sample 3 sample tt 0
>
>
>
> TX Rate TXTOTAL:TXOK EWMA T/ F avg last xmit
>
> [36 Mb: 250] 1:1 (100.0%) 1/ 0 464uS 6977
>
> [36 Mb:1600] 1:1 (100.0%) 1/ 0 764uS 93021
>
> [54 Mb: 250] 121:121 (100.0%) 121/ 0 444uS 142385
>
> [54 Mb:1600] 2:2 (100.0%) 2/ 0 644uS 93578
>
>
>
> Johann
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