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<div><span class="785153718-26102010"><font face="Arial" size="2">Hi all,</font></span></div>
<div><span class="785153718-26102010"><font face="Arial" size="2"></font></span> </div>
<div><span class="785153718-26102010"><font face="Arial" size="2">When I go to the trend page for a host and then click on a graph to get the 48-hr, 12-day, 48-day, and 576-day graphs, something doesn't look right.
</font></span></div>
<div><span class="785153718-26102010"><font face="Arial" size="2"></font></span> </div>
<div><span class="785153718-26102010"><font face="Arial" size="2">For example, I'm looking at the CPU utilization graphs:</font></span></div>
<div><font face="Arial"><font size="2"><span class="785153718-26102010">* I</span><span class="785153718-26102010"><font>n the 48-hour graph, I see 2 spikes for "user" this morning that were near 60%.
</font></span></font></font></div>
<div><font face="Arial"><font size="2"><span class="785153718-26102010"><font>* In the 12-day graph, those same 2 spikes only go up to about 30%.</font></span></font></font></div>
<div><font face="Arial"><font size="2"><span class="785153718-26102010"><font>* In the 48-day graph, the spikes only go up to about 15%.</font></span></font></font></div>
<div><font face="Arial"><font size="2"><span class="785153718-26102010">* In the 576-day graph, the values hover around 10%.</span></font></font></div>
<div><span class="785153718-26102010"><font face="Arial" size="2"></font></span> </div>
<div><span class="785153718-26102010"><font face="Arial" size="2">Furthermore, the legend at the bottom of the graphs shows max values that are lower than what can be seen on the graphs. I'm seeing the same behavior on the other graphs from the trend page...not
just the CPU Utilization graphs.</font></span></div>
<div><span class="785153718-26102010"><font face="Arial" size="2"></font></span> </div>
<div><span class="785153718-26102010"><font face="Arial" size="2">Is there a problem with the scaling of the y-axis between the graphs over the various timeframes, or am I not understanding the way that RRDTool generates these graphs? I did notice that if
I zoom in from one of the higher level graphs to match a more granular graph, I get the same numbers that I expect in the more granular graph. For example, in my example above, if I go to the 12-day graph with spikes at 30% and zoom in to just the last 48
hours, the graph looks the same as the 48-hour graph with the spikes at 60%.</font></span></div>
<div><span class="785153718-26102010"><font face="Arial" size="2"></font></span> </div>
<div><span class="785153718-26102010"><font face="Arial" size="2">Thanks,</font></span></div>
<div><span class="785153718-26102010"><font face="Arial" size="2">Ray</font></span></div>
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