On Nov 30, 2011, at 10:27 PM, Larry Finger wrote: > On 11/30/2011 09:05 AM, francesco.gring...@ing.unibs.it wrote: >> Larry, >> >> I found your message on linux-wireless (end of July) reporting that the >> throughput was about 10Mb/s with bcma. You mention kernel >> "master-2011-07-26-150-g4ea94a9". I gave it a try (it is a 3.0.0 if I'm not >> wrong) but I'm still having very low throughput. >> >> Rafal: so you observe good/bad throughputs at random? Sometimes after cold >> boot it works fine, other times bad? >> >> Did you modprobe using some options? > > My netperf results (3 sec samples) are: > > TCP_MAERTS Test: 13.60 14.41 16.05 15.01 14.70 15.36 14.72 15.07 12.37 11.01 > Results: max 16.05, min 11.01. Mean 14.23(1.44) > > TCP_STREAM Test: 3.00 1.89 1.23 2.12 0.91 1.59 1.46 0.71 1.99 2.12 > Results: max 3.00, min 0.71. Mean 1.70(0.64) > > As you can see, RX is OK, but TX is quite low. > > I will run the same test with brcmsmac later. Their damned Kconfig won't let > me build both b43 and brcmsmac at the same time. Larry, Rafal,
I can now confirm that with kernel 3.0.0-wl everything is ok, tx power is as expected and in fact I achieve up to 23Mb/s (iperf) on free channels. With latest kernel (I'm talking about 3.2.0-rc3-wl) I believe that the initialization of the radio is broken and, in fact, tx power is the lowest possible. I will bisect to check when the problem was introduced. Cheers, -Francesco > > Larry > > > _______________________________________________ b43-dev mailing list b43-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/b43-dev
