netdev - Re: ANNOUNCE: debloat-testing kernel git tree

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Date:	Sun, 13 Mar 2011 11:27:17 +0100
From:	Pavel Machek <pavel@....cz>
To:	Rick Jones <rick.jones2@...com>
Cc:	Tianji Li <Tianji.Li@...m.ie>, Dave T?ht <d@...t.net>,
	sedat.dilek@...il.com, netdev@...r.kernel.org,
	linux-wireless@...r.kernel.org, bloat-devel@...ts.bufferbloat.net,
	linux-kernel@...r.kernel.org
Subject: Re: ANNOUNCE: debloat-testing kernel git tree

Hi!

> > Bandwidth varies greatly with time. On cellphone, you can go from
> > 5KB/sec GPRS to 300KB/sec HSDPA and back...
> 
> How quickly/often and does that trigger an event in the host that would
> allow adjustment of the queue?

I'd expect it to get fast when you leave the building, and back to
slow when you re-enter. It all depends how good 3G coverage is, but
seeing it change more than once a minute is not that uncommon.

Event... not sure. Linux can ask for current signal strength, and I
assume connection type works in similar way...
								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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