Date: Mon, 1 Apr 2013 15:21:43 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Gleb Romanov <gromanov@hellok.org> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: 802.11n performance for AR9280 Message-ID: <CAJ-VmomtBq8xw4apUmuZyOLcPe5KTGuHOxsyBMvzSWX0XhKbDQ@mail.gmail.com> In-Reply-To: <1ca04345430c497abdd21b72680e4e0b@BN1PR05MB060.namprd05.prod.outlook.com> References: <1ca04345430c497abdd21b72680e4e0b@BN1PR05MB060.namprd05.prod.outlook.com>
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Hi, 9.x doesn't implement 11n aggregation transmission. It only supports 11n MCS rate transmission (with no aggregation) and 11n RX with MCS and aggregation. If you update to -HEAD you should see the performance increase. Adrian On 1 April 2013 15:10, Gleb Romanov <gromanov@hellok.org> wrote: > Hello, > > I have a question about 802.11n performance for AR9280 ( my card is Ubiquiti SR71E ) in hostap mode. To measure performance, I'm looking at the download speeds from my file server (Samba) through a FreeBSD AP to a laptop with Centrino 6300 (agn 3x3:3). > I see 3-4 MBytes/s on the 2.4 GHz band (using ht/20 or ht/40 - doesn't matter) and around 5-6 MB/s on the 5 GHz band (ht/40). > The laptop is running Win 7 and can do 8-9 MB/s with a commercial AP (2.4 GHz ht/20 2x2:2) > > I run 9.1-RELEASE GENERIC and the question is this is the expected performance (from 9.1 RELEASE ) or I'm just doing something wrong? May be bad antennas or wires? > If it is expected and I need to switch to HEAD to do better, can I only update the "ATH_module_releated_stuff" and leave the rest of the base untouched? > Any comments would be helpful! > > Gleb > > > ------- > Here is some info about the system: > Right now it is configured for 2.4 GHz simply because of the range. With 5 GHz I need to in the same room with the AP to get the speeds I mentioned. > > uname -a > FreeBSD fwall 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 > > pciconf -lv > ath0@pci0:3:0:0: class=0x028000 card=0x4e050777 chip=0x002a168c rev=0x01 hdr=0x00 > vendor = 'Atheros Communications Inc.' > device = 'AR928X Wireless Network Adapter (PCI-Express)' > class = network > > /etc/rc.conf > wlans_ath0="wlan0" > create_args_wlan0="wlanmode hostap" > ifconfig_wlan0="apbridge mode 11ng ht channel 3:ht/40" > hostapd_enable="YES" #for wlan0 > hostapd_program="/usr/local/sbin/hostapd" #run from port instead of base > > ifconfig > wlan0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 > ether 00:15:6d:85:25:13 > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng <hostap> > status: running > ssid badaboom-n channel 3 (2422 MHz 11g ht/40+) bssid 00:15:6d:85:25:13 > country US ecm authmode WPA2/802.11i privacy MIXED deftxkey 2 > AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 27 scanvalid 60 > protmode CTS -htcompat -ampdu ampdulimit 64k ampdudensity 8 -amsdu > smps wme burst dtimperiod 1 -dfs > > /etc/hostapd.conf: > ht_capab=[HT40+][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC12][DELAYED-BA][MAX-AMSDU-7935][DSSS_CCK-40][LDPC][GF][SMPS-DYNAMIC][PSMP][LSIG-TXOP-PROT] > (Here I used all available options. I don't see any difference between using the line and commenting it out. Huh?) > _______________________________________________ > freebsd-wireless@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-wireless > To unsubscribe, send any mail to "freebsd-wireless-unsubscribe@freebsd.org"
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