By this I mean, whats the best way show the uptime of systems? Idealy id like to show some sort of percentage figure, like what the webhosts do. ie 99.5% uptime.
Is there a standard way to determine this?
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Yes, actually there's several ways to do this. make sure you use the right data for the right consumer though, there is a difference. Iv written a full article on it here, its called "Service Availability Reporting" http://themonitoringguy.com/articles/service-availability-reporting/ That should answer your questions.. – Cheyne Feb 24 '11 at 03:12
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broken link to article – Riley Guerin Mar 07 '17 at 21:20
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link to wayback machine version: https://web.archive.org/web/20160506183609/http://themonitoringguy.com/articles/service-availability-reporting – Riley Guerin Mar 07 '17 at 21:22
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found it very helpful b/c it suggest an "outage" table where you subtract that from total time in the period. most advice i find assumes you have "time up in minutes/seconds/ms", but you dont generally have that. you have a sample of uptime (e.g. ping checks saying up/down). If you think of instead storing downs as an "incident" it really simplifies the development. at least it has for me. – Riley Guerin Mar 07 '17 at 21:24
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We use Pingdom to monitor our servers, and they generate the sort of numbers you're looking for (we just use the free account). They also seem to have an API which will let you get your info programatically - no guarantees that'll work with a free account, though.
Hope this helps!
Xavier Holt
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