[Orca-users] Re: httpops/second plotting bug??

[Blair Zajac]

You're talking about the web server hits per second?  When orcallator
is monitoring the web server, it sleeps for 5 seconds, counts the
number of new lines in the web server access log, goes back to sleep
for another 5 seconds, and repeats this.  After a 5 minute interval,
the average hits per second is calculated for the whole 5 minute
interval.  Over the 5 minute interval, the largest number of hits in a
5 second interval is saved and divided by 5 seconds to get the peak
hits per second.  A difference between 9 and 64 does sound high, but
you can check the access log to see if you get variations in hits
like this.

Regards,
Blair

paul beard wrote:
> 
> It's entirely possible I don't understand how the peak 5 second plots
> are generated vs the average values, but I know the average values are
> right and want to be able to defend, if possible, the peak values. I
> don't want anyone making assumptions about capacity on those values. Is
> this a bug (I note that the sample plots in the documentation don't show
> near as much variation).
> 
> For instance, where now I see 9 in my 5 minute average, my 5 second
> average is 64. I know the 9 is right.
> 
> Can someone 'splain this?
> 
> --
> Paul Beard / 206 728 4282 x138
> FizzyLab / 2025 First Ave, Suite 1150
> Seattle WA 98121
> 
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