Finding x values for peaks in graph

I am trying to find the hours where my server load goes high (peak hours). As per what I know and have read, I can employ shape matching to find a peak, and for that I can use neural networks, etc.

But this will only tell me that the input is a peak or not. I wont be able to pass in a graph of my daily server usage and have it tell me the peak hours.

Pardon me, if the question is too idiotic, but trust me I have no leads on how th开发者_如何学运维is might be done. All my research is pointing to ways to find a peak, whereas I need to find where the peak exists in a data set, and there might be more than one such peaks too.

So, you have an algorithm to detect peaks but you don't know how to find peak hours. The obvious idea is to collect peak rate per hour and build a histogram. Then find peaks in that histogram.

Or am I missing something?