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How can I measure the server utilization in terms of requests per unit of time (lets say one hour), assuming the server’s maximum capacity is known (for example, 1000 requests per hour)?
I know the equation will be:
utilization = Number of executed requests by server / server capacity
But how can I measure the requests sent from a client to a server?
I need a valid equation to define a request please.
This cannot be answered as “request” in a client/server model cannot be identified without knowing the protocol. To illustrate, multiple HTTP requests can be sent in one connection. UDP based protocols do not use connections at all.
Most general description I can come up with to define a request in an unidentified client/server protocol is the number of messages initiated by the client that require a response by the server. It is a observed variable, not a derivative.
In a program you would obtain this variable via a callback or RPC to the server in question or a program that would be able to provide this variable by inspecting logfiles.