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Date:      Sun, 20 Nov 2005 16:47:50 +0100
From:      "Damien Bergamini" <damien.bergamini@free.fr>
To:        "Sam Leffler" <sam@errno.com>
Cc:        cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/dev/usb if_ural.c if_uralvar.h
Message-ID:  <03f501c5ede9$c46874b0$0300a8c0@COMETE>
References:  <200511182137.jAILb2Am040002@repoman.freebsd.org> <43800AA9.1020700@errno.com>

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| Damien Bergamini wrote:
| > damien      2005-11-18 21:37:02 UTC
| > 
| >   FreeBSD src repository
| > 
| >   Modified files:
| >     sys/dev/usb          if_ural.c if_uralvar.h 
| >   Log:
| >   Second part of the AMRR commit.
| >   Enable automatic rate adaptation in BSS operating mode.
| >   Works great here.  Will need a lot of testing though.
| 
| This is a big improvement, thank you.  Can you say what "works great" 
| means?  I just tried a couple of ural sticks and they max out at ~13 
| Mb/s for upstream tcp netperf to an 11g ap in close proximity.  This 
| appears to be the max for the adapter as locking the rate to 54M gets 
| about the same (though I don't see any way to get stats on what's going 
| on to see if there's room for improvement).
| 
| Sam


By "works great" I mean that the rate decreases when I move far from
the access point and increases back when I get closer to it.
And when I don't move the rate seems to stay steady.
I'm testing a rate adaptation algorithm there, not becnhmarking the
maximum throughput of the adapter when locked at 54Mbps.

Damien




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