It seems to me it's a 95 percentile (top 5% of the samples are excluded) combined<br>with an 85 percentile out of the remaining 95.<br>IMO think should be computing out of the MAX samples from the rrd and consolidate with an average (how this can be done ?)<br>
I'm also interested in the topic so i'll watch out.<br>Nice topic.<br><br><div class="gmail_quote">On Wed, Jun 18, 2008 at 7:28 PM, Ryan goldberg <<a href="mailto:rgoldber-rrdtool@bitburst.com">rgoldber-rrdtool@bitburst.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Our upstream does 95th percentile billing in a weird way. Quote:<br>
<br>
"Blahblah Telecom monitoring system takes and records a sample every five<br>
minutes for both the in and out going data stream. At the end of the month,<br>
the samples are ranked and the top 5% of the samples are excluded and the next<br>
highest 15% recorded samples are used to compute the monthly sustained usage.<br>
If the monthly average is larger than the base commitment level, the base<br>
commitment level is subtracted from the monthly average. The result is used<br>
to bill the burstable usage. The burstable useage rate is $blah/mps"<br>
<br>
Can someone point me in the right direction so that can I produce this number<br>
with rrdtool? I have 60 days of 5 minute samples...<br>
<br>
TIA-<br>
Ryan<br>
<br>
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</blockquote></div><br>