[mrtg] Re: Maxbytes for 1 meg serial?

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Fri Dec 10 10:56:35 MET 1999


Nick Bastin wrote:
> 
> on 12/9/99 8:08 PM, Marc-Adrian Napoli at marcadrian at cia.com.au wrote:
> 
> > 1megabit link - 125000 (Never gets higher than about 100000)
> 
> Maybe I'm missing something here, but last I checked a 1mbit link should get
> a maximum of 131072 bytes per second.  In my book, a megabit is 1/8 of a
> megabyte, which is 1024k, which makes a megabit 128k, which makes it 131072
> bytes.  Of course, I could be wrong and we really do count bandwidth with a
> megabit as 125k, but that doesn't make any sense, and even if we did, a
> kilobyte is still 1024 bytes, and that would make maxbytes 128000.
> 

Why do you think 1m=1024k==131072?  What distance is a kilometer,
how many grams go in a kilogram?

An exception is made for computer memory and disk space because of the
fact that ten address lines with two possible states is possible while
three lines with ten states is next to impossible. 

To make things more complicated:  for diskspace it is common to use
1024 per kilo and 1000kilo per mega.  For memory it is 1024*1024 per mega.

In other words: 1024 per kilo is strange; if it is not common to use it,
use the normal value:1000.  1024 is the exception and this is not used
for line speed.

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