[rrd-users] Re: RRD Graph

Alex van den Bogaerdt alex at ergens.op.het.net
Mon Nov 22 10:14:31 MET 2004

On Mon, Nov 22, 2004 at 02:57:19PM +1000, Saravanan Suthanthiram wrote:
> I have recreated RRD database from COUNTER to DERIVE as 
> DS:ds1:DERIVE:600:0:U. Still there is a sudden increase in the graph. 
> I will briefly explain the scenario. We used to reboot the server every 
> couple of weeks and the value starts from 0 to 10000 (say for example) and 
> after reboot it will again starts from 0. In this case after the reboot 
> there is a sudden increase in the graph. 

The input goes from 10,000 to 0 so the rate should be (-10000/300 =) -333

Problem #1: you need to check that your modifications worked out, the
            increase is unexpected

After reconfiguring your database, you will need to discard negative
rates.  Limits should NOT be set to "U".  The minimum rate you allow
is zero; tell RRDtool this fact.


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