Search code examples
azurevirtual-machinemonitormetrics

Azure VM stats - Network In/Out - what are the measurements?

I feel perturbed, but I don't understand the measurement Azure uses for Network In/Out and a few other things.

On Azure portal -> my VM -> Metrics -> [Host] Network In/Out, it says that it is measured in bytes, but then it also draws graph over time. Azure VM Monitoring If it were plain, bytes, it should be cumulative and therefore grow indefinitely, but it isn't, therefore I am inclined to believe it is measured per second or something like that. But Azure docs claim that it is bytes and not bytes per second (link here)

enter image description here

Am I missing something obvious?

Solution

  • I am inclined to believe the data is in bytes per minute. At least for mine it appears that way. I set my graph for a 10 minute interval. Taking the mouse off the graph the total bytes show at the bottom. Hovering over the individual sample points (10 in total) they average between 31-34MB each. Adding them up you get close to the total for the graph interval 326MB. 10*32.5 is very close to the this total leading me to believe that each interval on the graph is a sum of the individual interval (1 minute). That is what I am seeing anyway. Terrible documentation from Microsoft. Why not just specify this in the (i) hover point on the individual graph? @eddyP23 - if you add up all your points in your graph it appears you would come to the same conclusion. Each point is a sum of the interval (1 minute). I am not sure how else to read this.
    If it were bytes per second the data total for the complete interval would be vastly larger. 10 minute interval