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<div>I am just starting to look at using the threshold process within MRTG. I set up a sample instance today and ran into a question on the "unbroken" messaging. In this case, I am monitoring CPU. The threshold is set to 23. I have not set the "ThreshHyst"
parameter, so I believe this should default to 10%. </div>
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<div> I received a message indicating CPU reached 26.79. That is as expected. The next message I received was an "unbroken" message, indicating that the CPU was now at 22.13333333. I was surprised to see this, as I thought I would not get an unbroken
message until CPU was at or below 21.7 (Threshold - 10% of Threshold or 23 - 2.3 = 21.7). </div>
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<div>Is my math wrong? Or am I misunderstanding when the unbroken message is supposed to be sent? Did I misread the default value of ThreshHyst?</div>
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<div>The only way I can see that this might be expected is if the ".1" default is applied directly to the threshold, in which case I would get an unbroken notice whenever CPU dropped below 22.9. But if that's the case, is there a difference in the way this
will be applied to, for example, the amount of traffic flowing on a 1G link? </div>
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<div>Or is there actually NO default, and so I really need to specify ThreshHyst in all instances?</div>
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<div>Thanks for any help in clearing up my confusion!</div>
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<div>Russ</div>
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