[ILUG] Linux uptime statistics

Liam Bedford lbedford at lbedford.org
Wed May 5 18:01:47 IST 2004


Rick Moen wrote:

>By the way, I'm having a difficult time figuring out what you're saying
>was wrong with my earlier calculation.  I've just re-done the _arithmetic_
>carefully; if you're saying there's something wrong with the conceptual
>framework (as you say, the "statistics"), then please do explain.  Thanks.
>
>Number of seconds in a quarter:  60 x 60 x 24 x 90 = 7,776,000
>  
>
90 days is a rough estimate of a quarter, which leaves out a whole day 
or so.. a year being 365.2something
days longs..

>Percent uptime over a quarter, given 90 seconds of downtime during 
>    that quarter:  100 * ( 1 - 90 / 7,776,000 ) = 99.998843 %
>
>  
>
it's a rough estimate, and a little low was what he said..

L.



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