[sdnog] cacti and old data values

Samir S. Omer samir.saif at sudren.edu.sd
Sun May 8 09:44:06 SAST 2016

Hi all 

can someone explain to me how does cacti/rrds work exactly in term of storing values ? 
I noticed that the values get inaccurate when time is defined for old times 

for example when I show the graph for last two days it shows a spike in traffic. However, if I set the time for the last week I see the graph is gone and graph is normal. 

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