[mrtg] Re: 95th percentile?

[Landa, Brian]

I would like to see a full config of this....

Brian Landa
Trend Consulting Services Inc.
Centre Plaza North, Suite #201
Eastlake, OH 44095
T: 440.942.4040 X243
F: 440.942.4848
Pager: 440.303.5426
Email: landa at trendcs.com <mailto:landa at trendcs.com>
Network Support Specialist 
WE make the NET * work




-----Original Message-----
From: David C Prall [mailto:dcp at dcptech.com]
Sent: Friday, September 24, 1999 1:17 PM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: 95th percentile?


> Most folks looking for 95th percentile want to be able to calculate
the
> 95th percentile of all of the data over a given time period (usually a
> month).  MRTG only keeps its five minutes numbers for about two days,
and
> then it only stores averaged averages.  It's impossible to recreate
the
> true 95th percentile five minute average using reaveraged numbers; the
> peaks merely show the highest five minute peak across a two hour
period.
> There's no way to determine how many five minute samples were that
high.
>
> Some people have written scripts that archive a day's worth of
five-minute
> samples each day, and then crank through that unaveraged data at the
end
> of the month.  The few folks I've talked to about this usually wrote
it on
> company time, and weren't permitted to release their script.  It's
> actually not that hard; the challenge is making sure that it scales
well
> (or can be reengineered to scale).
>
Thanks for the excellent example. So I went back and took a look at
above.net which supposedly had the 95th Percentile patched and found it
actually listed on the Monthly graph, along with a Red Line across at
this value. http://stats.sjc.above.net/traffic/

So what I am to understand is that they take this number and charge a
higher rate for all traffic above and beyond this value? So if I decide
to copy the entire Windows NT i386 directory over the wire to another
server at night, I am going to get charged an additional amount for this
half-hour burst of abnormal traffic? Since it wasn't critical it would
probably be cheaper to send the CD and have the local admin insert it
into the CD-ROM drive instead?

I don't really understand this, all that well. I've never had to
provision major connections beyond a T-1 to an ISP that was X amount a
month. No funny stuff in the contract that I saw.

David C Prall, MCNE MCSE          DCP Technologies
dcp at dcptech.com                       http://www.dcptech.com
dcppage at dcptech.com


--
* To unsubscribe from the mrtg mailing list, send a message with the
  subject: unsubscribe to mrtg-request at list.ee.ethz.ch
* The mailing list archive is at http://www.ee.ethz.ch/~slist/mrtg

--
* To unsubscribe from the mrtg mailing list, send a message with the
  subject: unsubscribe to mrtg-request at list.ee.ethz.ch
* The mailing list archive is at http://www.ee.ethz.ch/~slist/mrtg