Date: Thu, 1 Oct 1998 22:51:25 -0500 From: Zach Heilig <zach@gaffaneys.com> To: Kris Kennaway <kkennawa@physics.adelaide.edu.au>, Nate Williams <nate@mt.sri.com> Cc: current@FreeBSD.ORG Subject: Re: fetch -p Message-ID: <19981001225125.B29551@znh.org> In-Reply-To: <Pine.OSF.4.03.9810021256330.20490-100000@mercury.physics.adelaide.edu.au>; from Kris Kennaway on Fri, Oct 02, 1998 at 01:01:23PM %2B0930 References: <199810011721.LAA10552@mt.sri.com> <Pine.OSF.4.03.9810021256330.20490-100000@mercury.physics.adelaide.edu.au>
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On Fri, Oct 02, 1998 at 01:01:23PM +0930, Kris Kennaway wrote: > Yes, this was actually my point; on a 14.4k modem without compression I should > be getting about 1.4k/s throughput. The figure I got was 16% higher than this > just on the downloaded data transfer speed, and PPP adds extra overhead for > the protocol (compressing the file by a further 16% is no mean feat :-). > > Getting transfer rates of this speed and higher is commonplace for text > transfers which can be easily compressed, but this is the first time I'd > noticed an already-compressed data stream coming in that fast (which is what > makes me suspicious). I heard a rumor that the modem <-> phone <-> modem was a syncronous connection. In this case, there would be only 8 bits, no start or stop bits. a 14.4K connection would then have raw data rate of 1.8K/sec. This would tend to make sense, since I commonly average 3.0K-3.3K/sec connected at 26.4K or 28.8K (3.3K or 3.6K/sec raw data rate). -- Zach Heilig -- zach@gaffaneys.com A horse without a nose... never wins. (unknown) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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