[mrtg] Re: Formula for calculating Network Utilisation

[Alex van den Bogaerdt]

On Tue, Jun 22, 2004 at 08:38:34PM -0700, Meng Keng Lee wrote:
> Hello,
> 
> Can I check with you whether the formula for calculating Network Utilisation (Input/Ouput) is correct?
> 
> Network Utilisation (Input in %) = ifInOctets/ifSpeed * 800
> 
> Network Utilisation (Output in %) = ifOutOctets/ifSpeed * 800

___if___ the ifInOctets counter counts bytes and ifSpeed is in bits
then it is correct.  This is __not__ the case.

Both counters are of the same type (both bits or both bytes) and thus
a percentage is 100 * x/y.

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