ath 802.11g throughput in 6.2-RELEASE

[Vladimir Botka]

Dne Wed, 16 May 2007 18:12:08 -0500
"Kernel Jake" <kerneljake at hotmail.com> napsal(a):

> Since upgrading to 6.2-RELEASE from 6.0-RC1, I have seen lower ath0
> network throughput than I had previously.  I can't remember exactly
> what speeds I had prior to 6.2, but they were definitely greater than
> 11 Mbps, probably closer to 48 Mbps.
> 
> When I used my old 6.0-RC1 kernel config file with 6.2-RELEASE, it
> contained "device ath_rate_onoe", and the speed was between 1 and 5
> Mbps .  I then noticed that the 6.2 ath man page listed "device
> ath_rate_sample", so I changed my config to use "sample" instead of
> "onoe", and now I get around 11 Mbps.  But it still isn't as fast as
> it used to be.  Nothing changed in my environment other than my
> client (meaning physical layout, wireless channel, wap firmware, etc).
> 
> WAP: D-Link WRT54G ver.4, Firmware version 4.71.1 Hyperwrt 2.1b1 +
> Thibor15c NIC: D-Link DWL-G520 Rev.B3
> 
> % uname -a
> FreeBSD canary 6.2-RELEASE-p3 FreeBSD 6.2-RELEASE-p3 #0: Mon May 14
> 22:14:35 CDT 2007     jake at canary:/usr/src/sys/i386/compile/CANARY
> i386
> 
> % dmesg | grep ath
> ath_hal: 0.9.17.2 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413,
> RF5413) ath0: <Atheros 5212> mem 0xeb000000-0xeb00ffff irq 17 at
> device 14.0 on pci0 ath0: Ethernet address: 00:11:95:92:72:55
> ath0: mac 7.9 phy 4.5 radio 5.6
> 
> % ifconfig ath0
> ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         inet 192.168.1.55 netmask 0xffffff00 broadcast 192.168.1.255
>         inet 192.168.1.54 netmask 0xffffffff broadcast 192.168.1.54
>         ether 00:11:95:92:72:55
>         media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
> (DS/11Mbps) status: associated
>         ssid yagi channel 2 bssid 00:14:bf:27:f1:bc
>         authmode WPA privacy ON deftxkey UNDEF TKIP 2:128-bit TKIP
> 3:128-bit txpowmax 36 bmiss 7 protmode OFF burst roaming MANUAL
> bintval 100
> 
>

Maybe interference problem. Any new bluetooth device in the vicinity ?
-vlado