On 05/31/2012 12:24 PM, Adrian Chadd wrote: > .. yup, I got it to 250MBit UDP. :-) > > It turns out that (at least in FreeBSD-9), the scheduler and sleep > state behaviour when doing adaptive power save/sleep state (ie, > adaptive CPU speed changes, going into C2) is enough to negatively > impact my iperf and ath/net80211 taskqueue scheduling. > > When I nail it back up to C1, fixed speed - everything is perfectly fine. > > I'll go and do some further digging into this, but it's good to see > that I can squeeze decently high throughput out of the 2x2 NICs.
I'm getting right at 250Mbps of UDP payload received when using a 2x2 AR9382 NIC (WPEA-121N) in a Lenovo X220i (with hacked white-listed BIOS). AP is a 3x3 AR9380 NIC (WPEA_127N) in Atom based network appliance. Open-air connection, about 3 feet apart. This is in the 'download' direction: Wired to Station. HT-40 on 5Ghz. The rates bounce around a bit...down to 240Mbps or so for a bit, then back to 250Mbps. Might be some other interference around as this is a relatively noisy environment... Upload speed seems to be a constant 243Mbps..at least at this moment. Kernel is 3.3.7+. Thanks, Ben -- Ben Greear <gree...@candelatech.com> Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
