Hi Bishal, On Tue, Dec 6, 2011 at 3:28 PM, Bishal Thapa <[email protected]> wrote: > Hello list, > I am following up with Chun-Yeow's report. I used > compat-wireless-2011-11-22. I am using Ubuntu 11.10. Two different set of > IEEE802.11n hardware: > > 1) TP-Link TL-WN821N AR9287 - rev2 USB dongles > 2) Azurewave AR5008 (rev1) AR5BXB72 PCIe cards > > Things I did to get Over-The-Air experimentation going: > > a) Applied Chun-Yeow's recommended patch to enable the HW acceleration for > ath9k (Therefore, didn't have to do nohwcrypt=1) > b) Changed ath9k rate adaptation algorithm to minstrel in config.mk > c) For (2), had to fix the ath9k filtering issue suggested by > http://open80211s.org/trac/wiki/ath9kFilteringIssueFix > (Otherwise it will form neighbors, but ARP request and replies won't succeed > without the FilteringIssueFix) > d) For (1), had to add support for NL80211_IFTYPE_MESH_POINT interface > suggested by Javier Cardona on June 9th, 2011 > (Surprisingly the patch was not there already at least in > compat-wireless-2011-11-22) > > Then, I get following HT throughput. > > I: Between (1) cards :) > > bishal@A:~$ iperf -c 10.105.0.5 -t 10 -i 1 > ------------------------------------------------------------ > Client connecting to 10.105.0.5, TCP port 5001 > TCP window size: 21.0 KByte (default) > ------------------------------------------------------------ > [ 3] local 10.105.0.6 port 34993 connected with 10.105.0.5 port 5001 > [ ID] Interval Transfer Bandwidth > [ 3] 0.0- 1.0 sec 14.4 MBytes 121 Mbits/sec > (...) > II: Between (2) cards :( > > bishal@C:~$ iperf -c 10.105.0.2 -u -b 100m -t 10 -i 1 > ------------------------------------------------------------ > Client connecting to 10.105.0.2, UDP port 5001 > Sending 1470 byte datagrams > UDP buffer size: 160 KByte (default) > ------------------------------------------------------------ > [ 3] local 10.105.0.1 port 56893 connected with 10.105.0.2 port 5001 > [ ID] Interval Transfer Bandwidth > [ 3] 0.0- 1.0 sec 4.57 MBytes 38.3 Mbits/sec > [ ID] Interval Transfer Bandwidth > [ 3] 0.0- 5.1 sec 5.55 MBytes 9.21 Mbits/sec > (...)
That's interesting info. Considering that those Azurwave cards are quite old I doubt anyone will spend time trying to improve throughput on those. That said, your test results will certainly save others from buying those cards on ebay and expecting to observe HT rates. Thanks! Javier -- Javier Cardona cozybit Inc. http://www.cozybit.com _______________________________________________ Devel mailing list [email protected] http://open80211s.com/mailman/listinfo/devel
