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On Tuesday, December 30, 2014 13:14:19 Bernhard Frühmesser wrote: > Hello, > > For a friend i setup a small RAID-1 config using Wheezy on one of his > old machines, just to backup his most important stuff. Unfortunately the > location where the box is placed can not be reached via cable because of > building conditions, so only Wireless is possible. > > I have installed package "firmware-ralink" for the network card and > these modules are loaded after reboot: > > rt2800pci > rt2800lib > rt2x00pci > > After using wpa_passphrase and adding wlan0 to /etc/network/interfaces > all works so far, the client get´s an ip from the dhcp server, can copy > stuff and so on. > > The Problem is that it´s extremely slow. > > The WLAN-Router is setup to support 11bgn mixed mode, channel bandwith > "audo" and max transfer rate 150Mbit/s. > > But when i check the client side with iwconfig i get this: > > wlan0 IEEE 802.11bgn ESSID:"My friends SSID" > Mode:Managed Frequency:2.462 GHz Access Point:MAC-Adress > Bit Rate=58.5 Mb/s Tx-Power=20 dBm > Retry long limit:7 RTS thr:off Fragment thr:off > Encryption key:off > Power Management:off > Link Quality=45/70 Signal level=-65 dBm > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:5788 Invalid misc:58 Missed beacon:0 > > The wlan-card is supposed to support 150Mbit/s as well. > > I have tested and position the box right next to the wlan-Router but > this doesn´t help much except the Link Quality is then 70/70. > > I have used iptraf to check for the data rates and the overall input > rate for this interface is about 5,8 Mbit/s which is not even 5% of the > max (theoretical) speed. I know that the max speed of a WLAN is never > reached but 5,8 Mbit/s overall speed seems very slow to me - no? > > Anything i can do to speed this up? > > Thanks, > > BF.
Just because the card will support 150Mbit/s does not mean the system will. The computer has other things to do besides see to the network, and the router has other connections to service and the system on the other side has other things to do too. It all adds up.
-- Mike McGinn KD2CNU Be happy that brainfarts don't smell. No electrons were harmed in sending this message, some were inconvenienced. ** Registered Linux User 377849
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