How to verify speed of a 1Gb/s network?

Joel Jaeggli joelja at darkwing.uoregon.edu
Fri Apr 28 06:40:30 UTC 2006


On Fri, 28 Apr 2006, Mike McCarty wrote:

> Joel Jaeggli wrote:
>> On Fri, 28 Apr 2006, Tim wrote:
>> 
>>> On Wed, 2006-04-26 at 19:32 -0700, Rob wrote:
>>> 
>>>> Am I right, that the throughput here is 1 Giga BYTES,
>>>> which is 8 Giga bits?
>>> 
>>> 
>>> Network card speeds are listed in bits per second.  These are the three
>>> most common speeds:
>>> 
>>> 10 mega bits per second
>>> 100 mega bits per second
>>> 1 giga bits per second
>>> 
>>> Don't ask me whether they're playing the SI or bullshit game regarding
>>> mega and giga equalling millions and billions, or using 1024
>>> multipliers.
>> 
>> 
>> Bits are in fact bits in this case. When you talk about packets or frames 
>> you tend to use bytes or octets (same thing) but line rate is bits per 
>> second.
>
> I think the issue raised was whether 1 Gbps is 1024*1024*1024 bps or
> 1000*1000*1000 bps.

1 billion bits per second is 1*10^9 bits, contrast with 2^30 bits which bc 
says is 1073741824

http://en.wikipedia.org/wiki/Gigabit

> Mike
>

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Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu
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