I recently installed FreeBSD 10.0-BETA3 onto my Thinkpad X200, everything is largely running fine except the wireless performance leaves a lot to be desired.
I've got an older Thinkpad T43 running -CURRENT next to the X200 in the same exact room, same distance from the AP, but with an iwi(4) card in it. The T43 will download large files between 100-200KB/s, and the "media" mode for wlan0 is "OFDM/48Mbps" which seems non-crazy. The X200 however will get between 20-90KB/s on the same files, and the "media" mode will oscillate *dramatically* during the transfer. I've watched it go from OFDM/54Mbps, down to 48Mbps, to 16Mbps, to DS/1Mbps which is where it seems to idle. I've started looking at the output of wlanstats(1) and nothing jumps out at me, then again, I'm a noob so what do I know: [23:35:28] tyler:~ $ wlanstats 8 rx frame too short 30 rx from wrong bssid 802156 rx discard 'cuz dup 4 rx discard 'cuz mcast echo 172272 rx beacon frames 175177 rx element unknown 996 rx frame chan mismatch 61 rx seq# violation (TKIP) 42 active scans started 41 background scans started 1072961 tkip crypto done in s/w 405918 tkip tx MIC done in s/w 667043 tkip rx MIC done in s/w 173976 rx management frames 667045 total data frames received 663976 unicast data frames received 3069 multicast data frames received 406278 total data frames transmit 405920 unicast data frames sent 1M current transmit rate 22 current rssi -86 current noise floor (dBm) -64 current signal (dBm) The only thing that looks removely suspicious is the "rx discard" segment, but again, I plead noob. Any pointers would be useful and appreciated! - R. Tyler Croy ------------------ Code: https://github.com/rtyler Chatter: https://twitter.com/agentdero rty...@jabber.org
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