Hands-On High Performance with Go

ReadMemStats

The ReadMemStats() function reads memory allocator statistics and populates them into a variable, say, m. The MemStats struct has a lot of really valuable information about in-flight memory utilization. Let's take a deep look into what values it can produce for us. An HTTP handler function that allows us to see the memory utilization of the binary may be helpful as we make more requests in our system and wish to see where our memory allocation is utilized:

1. First, we can instantiate the program and the function:

package main     import (    "fmt"    "net/http"    "runtime")      func memStats(w http.ResponseWriter, r *http.Request) {    var memStats runtime.MemStats    runtime.ReadMemStats(&memStats)

2. Next, we can print all of the values of the individual ...