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Re: [OM] Re: How big is too big?

Subject: Re: [OM] Re: How big is too big?
From: Garth Wood <garth@xxxxxxxxxxxxxxx>
Date: Sun, 19 Jan 2003 07:14:27 -0700
At 08:50 PM 1/18/2003 -0800, Moose wrote:
That sounds right for pages that are primarily text, where the images elements are decorateive elements, product id shots, etc. and particularly in commercial venues. Where the true purpose IS the image, the image has to contain enough information to be worth viewing. When I run across a site of photos that are like big postage stamps, I think "Nothing to see here." and move on.

I don't think your dial-up speed numbers 'add up'. I just used dial-up to view a 256k image. Total time was under 17 sec from hitting return to completion, with 5-6 sec. before the site started downloading the image. Also, the site used progressive load, which should cost at least a sec or 2. That works out to something in the neighborhood of 25kbps net throughput. Dial-up from here is seldom better than 35-38kb, so someone with a 48kb connections like Mike has tonight, should get a net of about 30. Are you perhaps off by about 10x? Am I missing something?

At 30kbps, a 100k image should take about 3-4 sec. to download, which seems quite acceptable to me. That gives room for both reasonable size and high quality jpegs.


30 kbps is 30 kiloBITS per second, whereas a 100"k" image is 100 kiloBYTES. As you're all probably aware, a byte is eight times larger than a bit. A 30 kbps throughput is actually delivering around 3.75 kByte/sec. (assumes "perfect" throughput with no network overhead, an impossible assumption in real life, but what the hey), so a 100K image should d/l in about 27 seconds.

Garth

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