netdev - Re: txqueuelen has wrong units; should be time

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Message-ID: <20110228174517.GD2515@tuxdriver.com>
Date:	Mon, 28 Feb 2011 12:45:18 -0500
From:	"John W. Linville" <linville@...driver.com>
To:	Albert Cahalan <acahalan@...il.com>
Cc:	Hagen Paul Pfeifer <hagen@...u.net>,
	Jussi Kivilinna <jussi.kivilinna@...et.fi>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Mikael Abrahamsson <swmike@....pp.se>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org
Subject: Re: txqueuelen has wrong units; should be time

On Mon, Feb 28, 2011 at 11:37:45AM -0500, Albert Cahalan wrote:

> Keeping the timeout really low is important because it isn't
> OK to eat up all the latency tolerance in one hop. You have
> an end-to-end budget of 20 ms for usable GUI rubber banding.
> The budget for gaming is about 80 and for VoIP is about 150.

Oooh, numbers! :-)

Where can I find estimates on average hop counts for internet
connections?

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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