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From: Krzysztof Halasa <khc@pm.waw.pl>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Heikki Orsila <shdl@zakalwe.fi>, Bodo Eggert <7eggert@gmx.de>,
	Tony Foiani <tkil@scrye.com>,
	Leon Woestenberg <leon.woestenberg@gmail.com>,
	linux-kernel@vger.kernel.org,
	David Schwartz <davids@webmaster.com>
Subject: Re: PROBLEM: KB->KiB, MB -> MiB, ... (IEC 60027-2)
Date: Mon, 22 Jan 2007 02:56:37 +0100	[thread overview]
Message-ID: <m38xfvrfhm.fsf@maximus.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.61.0701212223340.29213@yvahk01.tjqt.qr> (Jan Engelhardt's message of "Sun, 21 Jan 2007 22:27:11 +0100 (MET)")

Jan Engelhardt <jengelh@linux01.gwdg.de> writes:

> Bleh. Except for storage, base 1024 was used for almost everything
> I remember. 4 MB memory meant 4096 KB, and that's still the case today.
> Most likely the same for transfer rates.

Nope, transfer rates were initially 1000-based: 9.6 kbps = 9600 bps,
28.8 kbps = 28800 bps, 64 kbps = 64000 bps. Then it went 128, 256,
512 kbps = 512000 bps and 1 Mbps = 2 * 512 kbps = 1024000 bps.

But it's limited mostly to serial interfaces. Other networks use
10, 1000 etc. because they have nothing natural in (powers of) 2
so 1 Mbps may be 1000000 bps as well.

> It's just that storage vendors broke the computer rule and went with 1000.

1024 etc. is (should be) natural to disks because the sector size
is 512 B, 2048 B or something like that.
-- 
Krzysztof Halasa

  reply	other threads:[~2007-01-22  1:56 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <7FsPf-51s-9@gated-at.bofh.it>
     [not found] ` <7FxlV-3sb-1@gated-at.bofh.it>
     [not found]   ` <7FyUF-5XD-21@gated-at.bofh.it>
2007-01-21 10:40     ` Bodo Eggert
2007-01-21 11:10       ` Eduard Bloch
2007-01-21 22:08         ` Stefan Richter
2007-01-22 15:53         ` Lennart Sorensen
2007-01-22 16:58           ` Jan Engelhardt
2007-01-22 18:36             ` Alan
2007-01-22 19:24               ` Tony Foiani
2007-01-22 22:26                 ` Bodo Eggert
2007-01-22 20:44               ` Lennart Sorensen
2007-01-22 21:17                 ` linux-os (Dick Johnson)
2007-01-22 20:43             ` Lennart Sorensen
2007-01-22 21:22               ` Jan Engelhardt
2007-01-21 14:45       ` Benny Amorsen
2007-01-21 15:06       ` Heikki Orsila
2007-01-21 21:27         ` Jan Engelhardt
2007-01-22  1:56           ` Krzysztof Halasa [this message]
2007-01-22 10:39             ` Bernd Petrovitsch
2007-01-22 10:48             ` Andreas Schwab
2007-01-23  1:04               ` Krzysztof Halasa
2007-01-23  1:45                 ` Jan Engelhardt
2007-01-23  9:23                 ` Andreas Schwab
2007-01-23 13:14                   ` Krzysztof Halasa
2007-01-20  8:08 Michał Kudła
2007-01-20 10:29 ` David Schwartz
2007-01-20 18:07   ` Leon Woestenberg
2007-01-20 22:54     ` David Schwartz
2007-01-21  0:07       ` Tony Foiani
2007-01-21 21:12         ` Jan Engelhardt
2007-01-22  6:45           ` Tony Foiani
2007-01-22  8:25           ` Roland Kuhn
2007-01-22 15:43           ` Lennart Sorensen
2007-01-21  7:11       ` H. Peter Anvin
2007-01-21 20:03         ` Geert Uytterhoeven
2007-01-21 20:06           ` H. Peter Anvin
2007-01-21 17:04       ` Leon Woestenberg
2007-01-21 22:12         ` David Schwartz
2007-01-22  8:49           ` Benny Amorsen
2007-01-27 15:06 ` Andries Brouwer

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