SCOM Pool or Pool Member Performance Indicators

So the way we calculate this avg/sec is by keeping track of the previous value received from the Big-IP as well as the timestamp. When the next value comes in, we take the difference of the 2 values and divide it by the amount of time that passed. For instance:

 

 

Received Bytes Out: 5302 @ 10:12:56

 

Received Bytes Out: 5518 @ 10:13:23

 

 

Works out as: 216 bytes / 27 seconds = 8bytes/sec which can be read as "the average increase in bytes out is 8 bytes per second".

 

 

That negative value you are seeing is actually a product bug that I was able to find today based on your logs. It looks like some packets are received in the wrong order, which creates a negative time span, which unchecked, then creates a negative average value. I've fixed the issue and it will be in the September release.