[rrd-users] Re: Newbie question

[Serge Maandag]

Create your rrd with ds minima/maxima of UN/UN and when plotting the
values, use an rpn to top of the values that are too large:

toppedvalue=myds,50,GT,50,myds,IF

if myds >50 then 50 else myds

Serge Maandag.

-----Original Message-----
From: Bill Ryan [mailto:billry at hotmail.com] 
Sent: Tuesday, May 28, 2002 4:00 PM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] Newbie question




Apology for the relative newbie-ness of the following:

Simple graph, GAUGE MAX, Sun server CPU loads (uptime) gathered only
once 
every 15 minutes.  The loads average ~ 0.5 -> 4, but occasionally will
ramp 
up well into the hundreds - indicative of severe NFS I/O and eventual
server 
failure if not caught in time ...

Anyway, what I need is a database which will have true values (unlimited

upper boundary) but will graph, say, 0 -> 50, so the typical range of
data 
will be viewable - but when the load spikes to past 50, rrdtool will not

consider it an anomaly and will show the spikes only as topping out the 
graph.  IOW, "-u 50" nicely keeps the graph between 0 -> 50, but removes
the 
spikes that go beyond ... and I need this information represented as
well.

Any help, thx.

B

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