On Tue, Dec 30, 2014 at 07:14:19PM +0100, 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. > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject > of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: https://lists.debian.org/54a2eb7b.9020...@a1.net
Megabits are not the same as megabytes. Eight bits in byte + start/stop and overheads. 150Mb is probably closer to 150/10MB - so 150Mb = 15MB in ideal conditions without any loss. Add in radio noisy environments / other interference and you can soon lose speed :( All the best, AndyC -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20141230183632.ga2...@galactic.demon.co.uk
