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From: karthikbalaguru on 27 Dec 2009 07:30
On Dec 27, 4:55 pm, Rich Webb <bbew...(a)mapson.nozirev.ten> wrote:
> On Sun, 27 Dec 2009 03:24:29 -0800 (PST), Bob
>
>
>
> <bobcousin...(a)googlemail.com> wrote:
> >On 26 Dec, 10:10, karthikbalaguru <karthikbalagur...(a)gmail.com> wrote:
> >> I wonder why Iperf uses 1024*1024 for megabytes
> >> and 1000*1000 for megabits ?
>
> [snippety snip]
> >So in general, SI units are the preferred units. For directly
> >addressed RAM chips (or ROM, Flash etc) a binary unit reflects the
> >underlying layout, and gives an integral value. For storage media like
> >disks, it's a gray area, and usage depends on choice.
>
> The more cynical among us may contend that usage depends on marketing.
>
> Since, for a given quantity, an SI enumerated size is "bigger" than the
> equivalent binary size, which sells more? A 500 SI-gigabyte drive or a
> 466 binary-gigabyte drive? Or even a 480 binary-gigabyte? Who looks at
> the fine print?
>
> Some of us <cough> are old enough to remember when 64 Kbyte machines
> were the top of the line. Naturally, some advertising copy referred to
> *their* machines as "65 Kbytes!" and a few even noted that 65,536
> conventionally rounds to "66 Kbytes" and, yes, advertised them that way.
>

Interesting point of view :-) :-)

Karthik Balaguru
From: ArarghMail912NOSPAM on 27 Dec 2009 14:08
On Sun, 27 Dec 2009 06:55:31 -0500, Rich Webb
<bbew.ar(a)mapson.nozirev.ten> wrote:

<snip>
>The more cynical among us may contend that usage depends on marketing.

IMO, 'contend' should be 'believe'. :-)

And I think that the world would be a lot better off if most marketing
types (along with a few other groups) suffered the fate of "The
marketing division of the Sirius Cybernetics Corporation". :-)

<snip>
--
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To reply by email, remove the extra stuff from the reply address.
From: TBerk on 28 Dec 2009 03:12


Jeff is in fine form today, well, _that_ day...


berk
From: karthikbalaguru on 28 Dec 2009 10:08
On Dec 27, 3:24 am, Jeff Liebermann <je...(a)cruzio.com> wrote:
> On Sat, 26 Dec 2009 19:45:10 +0000, alexd <troffa...(a)hotmail.com>
> wrote:
>
> >On second thoughts, two different types of iperf floating around the
> >internet could lead to much confusion when trying to compare speed test
> >results.
>
> Well, since he's apparently benchmarking some device, it must mean he
> actually has something working.  There's hope, methinks, maybe.
>
> Perhaps it would be more appropriate to ask on the iPerf mailing list:
> <https://lists.sourceforge.net/lists/listinfo/iperf-users>
>
> Oh, he already posted a question and got a mostly wrong answer.  Oh
> well.
>

Okay, i posted it to iPerf mailing list.
Pls find the responses in the below link -
http://sourceforge.net/mailarchive/forum.php?thread_name=3e17ce20912270851g349ad1a7rfbdd76101f969b90%40mail.gmail.com&forum_name=iperf-users

> Pretend I didn't mention IEC 60027-2 A.2 which uses kibi, mebi, and
> gibi bytes.
> <http://members.optus.net/alexey/prefBin.xhtml>
> <http://physics.nist.gov/cuu/Units/binary.html>
>
> However, he wanted to know why iPerf did it both ways.  

Yes !

> The first
> version of iPerf was scribbled in May 2001.  The ISO released the
> binary prefix standards in 1998, which are generally ignored by the
> industry to this day.  Until the failure to use kibi, mebi, and gibi
> bytes is made an international crime punishable by being forced to
> read the entire standard from cover to cover, the choice of prefixes
> are those of the author.
>

Okay, this seems reasonable !
Maybe, if iPerf sticks to one convention, it would be better.

Karthik Balaguru
From: alexd on 29 Dec 2009 04:48
Meanwhile, at the alt.internet.wireless Job Justification Hearings,
karthikbalaguru chose the tried and tested strategy of:

> Maybe, if iPerf sticks to one convention, it would be better.

I think it would be nice if it printed both types of output, to keep pedants
happy :-)

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