Re: [rrd-users] Holt--Winters - learning phase / poisoning algorithm

2011-10-12 Thread John P. Rouillard
In message <1318447139088-6886392.p...@n2.nabble.com>, Crypty writes: >if I run HW prediction algorithm, it's collecting data for a day at first. >Since than, it's saving HW predicted values and after next day it presents >failures... I understand that... > >During these two days it is important t

Re: [rrd-users] Holt-Winters Forecasting

2010-06-08 Thread John P. Rouillard
In message , John huysing writes: >Can the Holt-Winter Forecasting  handle the fluctuating traffic flow >that occurs over a seven day period.  The traffic pattern on the >weekend is quite different that during the week. But the pattern from >week to week is the same When I was testing this I did

Re: [rrd-users] Is it possible to display two different time ranges for the same DS in one graph?

2010-06-04 Thread John P. Rouillard
In message , "Dave Whitehead" writes: >Is it possible to display two different time ranges for the same DS in >one graph? > >We want to compare trends for todays (still accumulating data) with >yesterdays to alert us to trends (eg is the rate of change of >temperature today faster than yesterday -

[rrd-users] Creating a XmR control chart.

2009-01-20 Thread John P. Rouillard
Hi folks: I am trying to get rrdtool to produce an XmR control chart. For example: http://gunston.gmu.edu/708/XmR.asp The data is throughput data measured in Kbits/sec that is gathered once per hour. So given: bw1 bw2 bw3 bw4 bw5 bw6 I need to calculate: the mean of the bw

[rrd-users] Getting restorable backups of rrd files

2008-12-08 Thread John P. Rouillard
Hi all: I need to backup a couple of thousand rrd files that are updated every 5 minutes. and I don't want to shut down the update process while the backup is going on. I am planning on using rsync, but the question is is that safe? The rrdtool dump and restore commands export the data to an xm