From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Date: Wed, 30 Nov 2011 15:27:40 -0600 Subject: low throughputs with 14e4:4353 In-Reply-To: <47FBA4BF-B673-43AE-9271-9976878D130D@ing.unibs.it> References: <77990757-D72B-4BF7-BEEB-5EDB9486236B@ing.unibs.it> <47FBA4BF-B673-43AE-9271-9976878D130D@ing.unibs.it> Message-ID: <4ED69FCC.7030200@lwfinger.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: b43-dev@lists.infradead.org On 11/30/2011 09:05 AM, francesco.gringoli at 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