>My daily graphic has a 4Mb/sec peak but the weekly, monthly >and annual graphs shows different peak values. What I want is >the same 4Mb/sec peak value for all year,month,week,daily >graphs, how can I solve this? I tried the unscaled, gauge, >absolute options but nothing seem to help. >
This is an unavoidable problem caused by the RRDTool rollup calculations and statistics. Basically, it is because: Max[d](Avg[e](x)) != Max[e](x) for intervals d>e Since, in a daily graph, the interval is 5min (one data point) you are showing the max of this fine. However, in a monthly graph, the interval is 2hours (24 data points) and the graph shows the average of these 24 data points. This smooths out the graph but results in a smoothed out Max line as well. The mathematics behind the calculations to explain the everage/max behaviour as data is rolled up are relatively complex. And as for trend prediction.... Hope this makes sense! Steve -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
