Hello everybody, I have a problem, which is a little bit complicated to explain, but I hope it is understandable... I want to graph the CPU Usage of a 4-CPU Linux-Server. Typically I would use the ssCpuIdle.0 to do so, but in my Linux-Version this vlaue is always 93, so I had to find an other way to do so. On the Internet, I found a formula to calculate the cpu usage by using ssCpuRawIdle, ssCpuRawSystem, ssCpuRawNice and ssCpuRawUser. I transformed the formula into MRTG and looked at the graphs. Firstly I was wondering, why this is always the same value, but now it is clear: MRTG calculates the given values resulting in the average load since last clearing of the counters... In my opinion I (or better MRTG) would have to calculate the valuechanges within the interval of each value and then use the formula. But I don't know how to do so. Here is the Target formula I use: 100 - ((100 * 1.3.6.1.4.1.2021.11.53.0&1.3.6.1.4.1.2021.11.53.0:[email protected]) / (1.3.6.1.4.1.2021.11.53.0&1.3.6.1.4.1.2021.11.53.0:[email protected] + 1.3.6.1.4.1.2021.11.52.0&1.3.6.1.4.1.2021.11.52.0:[email protected] + 1.3.6.1.4.1.2021.11.51.0&1.3.6.1.4.1.2021.11.51.0:[email protected] + 1.3.6.1.4.1.2021.11.50.0&1.3.6.1.4.1.2021.11.50.0:[email protected])) I am using MRTG with RRDtool. Thanks for your help. Stephan
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