Kobboi wrote: > Hello, > > I'm having a performance issue with my wireless card. I'd be grateful if > someone could help out, pinpoint the cause or propose a solution. I'm > using good old easy-to-crack WEP. > > Kobboi > > === My hardware ========== > > 03:0c.0 Network controller: Broadcom Corporation BCM4306 802.11b/g > Wireless LAN Controller (rev 02) [0280: 14e4:4320 (rev 02)] >
The cause is probably an error in the reverse engineering of the code for the BCM4306/2. As you discovered, this card _NEEDS_ b43legacy. I don't quite know why users think they are smarter than the device selection code and try b43 with legacy devices and vice versa. These devices have never performed very well; however, I think they used to be better with bcm43xx than they are with b43legacy, but I have no real proof. > I can put the wireless speed to 54MB with iwconfig (and waiting a few > seconds), but then the transfer speed of a large file drops to 0-20KB/s > > wlan0 IEEE 802.11 ESSID:"xxxxx" > Mode:Managed Frequency:2.412 GHz Access Point: > 00:11:F5:30:88:6A > Bit Rate=54 Mb/s Tx-Power=27 dBm > Retry min limit:7 RTS thr:off Fragment thr=2352 B > Encryption key:xxxxx > Link Quality=78/100 Signal level=-49 dBm Noise level=-64 dBm > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:0 Invalid misc:0 Missed beacon:0 The rate-setting algorithm in mac80211 is very good. When you force a rate higher than it picks, you increase the error rate and drop the overall performance - just as you found. Larry _______________________________________________ Bcm43xx-dev mailing list [email protected] https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
