[Xymon] Ping tests showing different levels percision
Michael Beatty
Michael.Beatty at sherwin.com
Tue Jan 8 14:56:59 CET 2013
I just noticed that different hosts are displaying ping results with
very different levels precision. On 3 of the hosts, the test seems to
be retuning results that are much more precise than on the other 3. If
you look at the graphs and data, data points are frequently changing up
and down with an active graph. On the other 3, the data is basically a
flat line, almost always showing the same value.
The one thing that that I can see that the more precise graphs are
showing is that all of those systems have ping results measured in
milisecods and are on the same network, where as the 3 that are not as
precise are not. One of them is my local system itself pinging itself
and its data points are measured microseconds. The other two are over a
satellite and their pings are between 1 and 3 seconds. For example, one
of the hosts is almost always showing 40 ms where as another is changing
with ever report between about 1000 ms and 3000 ms.
Is this normal, is there some kind of normalization that happens on
hosts whos tests don't change much in value?
--
Michael Beatty
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