Приветствую, друзья!
Имею следующую проблему, с которой измучился.
Тормозит wi-fi под ubuntu. C Windows и FreeBSD все нормально при тех же условиях настройки.
Точка: WL-520GC
Подопытная ось:
root@solariz-laptop:/home/solariz# uname -a
Linux solariz-laptop 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010 x86_64 GNU/Linux
Сеть:
root@solariz-laptop:/home/solariz# lshw -C network
*-network
description: Network controller
product: BCM4311 802.11b/g WLAN
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0c:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=b43-pci-bridge latency=0
resources: irq:17 memory:f9ffc000-f9ffffff
*-network
description: Ethernet interface
product: NetLink BCM5906M Fast Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:09:00.0
logical name: eth0
version: 02
serial: 00:1c:23:f9:60:a3
size: 100MB/s
capacity: 100MB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.99 duplex=full firmware=sb v3.04 ip=192.168.1.200 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s
resources: irq:30 memory:f9bf0000-f9bfffff
*-network
description: Wireless interface
physical id: 2
logical name: wlan0
serial: 00:1e:4c:05:5a:76
capabilities: ethernet physical wireless
configuration: broadcast=yes ip=192.168.1.201 multicast=yes wireless=IEEE 802.11bg
root@solariz-laptop:/home/solariz# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:"solariZAeroNet"
Mode:Managed Frequency:2.412 GHz Access Point: 90:E6:BA:92:B0:1B
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:4C77-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx [2]
Power Management:off
Link Quality=28/70 Signal level=-82 dBm Noise level=-70 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
pan0 no wireless extensions.
Рекомендую обратить внимание, что Link Quality=28/70 при том, что точка находится в 2 метрах без препятствий. Не смотря на Bit Rate=54 Mb/s измеряем скорость:
<IMG SRC="
http://www.speedtest.net/result/754944318.png">
root@solariz-laptop:/home/solariz# iperf -c 89.112.xxx.xxx -P 5
------------------------------------------------------------
Client connecting to 89.112.xxx.xxx, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 7] local 192.168.1.201 port 56585 connected with 89.112.xxx.xxx port 5001
[ 3] local 192.168.1.201 port 56583 connected with 89.112.xxx.xxx port 5001
[ 4] local 192.168.1.201 port 56582 connected with 89.112.xxx.xxx port 5001
[ 5] local 192.168.1.201 port 56584 connected with 89.112.xxx.xxx port 5001
[ 6] local 192.168.1.201 port 56586 connected with 89.112.xxx.xxx port 5001
[ ID] Interval Transfer Bandwidth
[ 7] 0.0-10.1 sec 376 KBytes 306 Kbits/sec
[ 4] 0.0-10.2 sec 200 KBytes 161 Kbits/sec
[ 6] 0.0-10.7 sec 256 KBytes 196 Kbits/sec
[ 5] 0.0-11.0 sec 192 KBytes 142 Kbits/sec
[ 3] 0.0-11.6 sec 200 KBytes 141 Kbits/sec
[SUM] 0.0-11.6 sec 1.20 MBytes 862 Kbits/sec
Теперь подключаемся к той же точке через ethernet и измеряем еще раз и оппппа, получаем заявленную провом скорость:
<IMG SRC="
http://www.speedtest.net/result/754946125.png">
root@solariz-laptop:/home/solariz# iperf -c 89.112.xxx.xxx -P 5
------------------------------------------------------------
Client connecting to 89.112.xxx.xxx, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 7] local 192.168.1.200 port 49080 connected with 89.112.xxx.xxx port 5001
[ 3] local 192.168.1.200 port 49076 connected with 89.112.xxx.xxx port 5001
[ 4] local 192.168.1.200 port 49077 connected with 89.112.xxx.xxx port 5001
[ 5] local 192.168.1.200 port 49078 connected with 89.112.xxx.xxx port 5001
[ 6] local 192.168.1.200 port 49079 connected with 89.112.xxx.xxx port 5001
[ ID] Interval Transfer Bandwidth
[ 7] 0.0-10.1 sec 312 KBytes 252 Kbits/sec
[ 5] 0.0-10.7 sec 312 KBytes 239 Kbits/sec
[ 3] 0.0-11.6 sec 408 KBytes 288 Kbits/sec
[ 4] 0.0-11.9 sec 416 KBytes 287 Kbits/sec
[ 6] 0.0-12.4 sec 416 KBytes 275 Kbits/sec
[SUM] 0.0-12.4 sec 1.82 MBytes 1.23 Mbits/sec
Иными словами скорость падает примерно в два раза.
Пробовал b43, ssb, виндовые дрова от HP через ndiswrapper (
https://help.ubuntu.com/community/WifiDocs/Device/Broadcom_BCM4311_rev_01_%28ndiswrapper%29 )
Ничего не изменилось. Прошу совета.
Тема: тормозит wi-fi. именно с UBUNTU (( (Прочитано 1960 раз)
