From: Andreas Hartmann <andihartmann@freenet.de>
To: Sourav <sourav.chakraborty@netcommwireless.com>,
linux-wireless@vger.kernel.org
Subject: Re: Not reaching optimum speeds with IEEE 802.11n
Date: Wed, 10 Sep 2014 16:53:09 +0200 [thread overview]
Message-ID: <541065D5.1020307@maya.org> (raw)
In-Reply-To: <540FA8D9.2070803@netcommwireless.com>
Sourav wrote:
> Hi All,
> We are using Ralink chip Rt3072L (using rt2800usb drivers rt2800usb.c),
> mac80211, and hostapd in our routers.
> root:~# lsmod
> Module Size Used by Tainted: P
> rt2800usb 15371 0
> rt2800lib 74214 1 rt2800usb
> rt2x00usb 9718 1 rt2800usb
> rt2x00lib 39328 3 rt2800usb,rt2800lib,rt2x00usb
> mac80211 266596 3 rt2800lib,rt2x00usb,rt2x00lib
> cfg80211 214073 2 rt2x00lib,mac80211
> compat 17406 4 rt2800usb,rt2x00lib,mac80211,cfg80211
>
> When we are measuring performance using iperf, we see ~20Mbps, using
> Channel 11 of 2.4GHZ, using 802.11n.
Known problem of rt2800usb. You might try the original vendor driver[1]
if you want to use the device as STA. Are you running this test on ARM?
rt2800usb runs *extremely* poor with Raspi, e.g.
With the vendor driver rt5572..., I'm getting > 100MBit/s (measured w/
netperf) running at 2.4 GHz and 40 MHz even through reinforced concrete
floor using a rt5372 chip, e.g. - even w/ Raspberry Pi.
[1] http://www.mediatek.com/en/downloads/
Kind regards,
Andreas
prev parent reply other threads:[~2014-09-10 14:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-10 1:26 Not reaching optimum speeds with IEEE 802.11n Sourav
2014-09-10 8:42 ` Arend van Spriel
2014-09-10 14:14 ` Helmut Schaa
2014-09-10 15:18 ` Andreas Hartmann
2014-09-11 10:15 ` Helmut Schaa
2014-09-12 2:11 ` Sourav
2014-09-12 7:46 ` Helmut Schaa
[not found] ` <5412A831.3050804@netcommwireless.com>
2014-09-18 8:53 ` Sourav
2014-09-10 14:53 ` Andreas Hartmann [this message]
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