Subject: multiple wireless cards
Newsgroups: gmane.linux.drivers.madwifi.devel
Date: 2008-07-19 19:24:58 GMT (24 weeks, 6 days, 8 hours and 32 minutes ago)
Hi there, I have a problem using 2 Atheros based wireless cards at the same time. Secifically, when each card works alone the driver works fine. However, when both cards work simultaneously, the per flow throughput of each cards is reduce of about 30-40%, even if the two wireless cards use different channels (1 and 11). My testbed consisted of a soekris 4801 with 2 R52H High Power Mikrotik 802.11a/b/g mPCI adapter runnig the madwifi 0.9.4 and the linux kernel 2.6.22. To see the throughput reduction I opened two outgoing asimptotic UDP flows (using the iperf tool) between the soekris board and two laptop. The two wireless cards worked in ad-hoc mode and I used 54Mbps as the wireless transmission rate (I disable the autorate alghoritm). Has anyone experienced the same problem? I would be really grateful if anyone shared his experience relative to my question. Regards, Emilio Ancillotti ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/