[rrd-users] Re: Sudden spike in RRD graph

[Alex van den Bogaerdt]

Tay Chee Yong wrote:

> I have implemented a large scale RRD plotting on all of my edge routers. I 
> am plotting the rate-limit traffic for my customers, but however, whenever 
> I change the value of the rate-limit (eg. from 1Mbps - 2Mbps), there will 
> be a sudden spike in the RRD graph, like the one shown in the attachment. 

Could this be due to a counter reset?  Have you set proper
max values (rrdtool tune) ?

> And what does the 'P' in the graph means?

Peta, which is 10^15.  You are using 64-bit counters?

HTH,
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