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From: Larry Finger <Larry.Finger@lwfinger.net>
To: b43-dev@lists.infradead.org
Subject: low throughputs with 14e4:4353
Date: Wed, 30 Nov 2011 15:27:40 -0600	[thread overview]
Message-ID: <4ED69FCC.7030200@lwfinger.net> (raw)
In-Reply-To: <47FBA4BF-B673-43AE-9271-9976878D130D@ing.unibs.it>

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

  reply	other threads:[~2011-11-30 21:27 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-29 19:28 low throughputs with 14e4:4353 francesco.gringoli at ing.unibs.it
2011-11-29 20:08 ` Rafał Miłecki
2011-11-29 21:36   ` Rafał Miłecki
2011-11-30 15:05     ` francesco.gringoli at ing.unibs.it
2011-11-30 21:27       ` Larry Finger [this message]
2011-12-01 19:01         ` francesco.gringoli at ing.unibs.it
2011-12-02 18:14         ` francesco.gringoli at ing.unibs.it
2011-12-05 20:39     ` Rafał Miłecki
2011-12-06  8:23       ` francesco.gringoli at ing.unibs.it
2011-12-07 12:01       ` Rafał Miłecki
2011-12-07 21:26         ` Larry Finger
2011-12-08  9:21         ` francesco.gringoli at ing.unibs.it
2011-12-08  9:34           ` Rafał Miłecki
2011-12-08 11:06             ` francesco.gringoli at ing.unibs.it
2011-12-10 10:17             ` francesco.gringoli at ing.unibs.it
2011-12-14 17:02             ` francesco.gringoli at ing.unibs.it
2011-12-14 18:04               ` Rafał Miłecki
2011-12-15 18:11                 ` francesco.gringoli at ing.unibs.it

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