[rrd-users] Re: cuting peaks ?

[Erik de Mare]

Hugo van der Kooij wrote:

>On Thu, 8 Jan 2004, Alex van den Bogaerdt wrote:
>
>  
>
>>On Thu, Jan 08, 2004 at 11:24:24AM +0200, raptor wrote:
>>
>>
>>    
>>
>>>Is there a method/way to cut high peaks so that other values do not flatten on the graphic...
>>>I have no MAX value set during creation of the RRD i.e. "DS:x:COUNTER:0:U", i dont want to, but want to
>>>cut peaks if they show up..
>>>      
>>>
>>Choose between these two:
>>
>>1: specify a maximum (--upper-limit) and rigid (--rigid)
>>2: use a CDEF to change large rates into unknown
>>    
>>
>
>So if my CPU graphs shows a glitch into the MEGA %s I could reduce it
>with:
>
>        CDEF:rawuser=cpurawuser,100,GT,nan,IF
>
>Hugo.
>
>  
>
or you can use LIMIT
*
LIMIT*


    replaces the value with /*UNKNOWN*/ if it is outside the limits
    specified by the two values above it on the stack. 

 CDEF:a=alpha,0,100,LIMIT


Erik.

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