How to use pprof to monitor the number of goroutines in a Go program?

How to monitor the number of goroutines in a Go program using pprof

Profiling the number of goroutines can help identify potential goroutine leaks. pprof, a Go profiling tool, provides insights into the current state of a running Go program, including the number of active goroutines.

Approach:

To monitor goroutine count using pprof:

• Enable profiling server: Start your Go program with the -cpuprofile flag.

  go run main.go -cpuprofile=cpu.pprof

• Open pprof dashboard: Visit localhost:8888/debug/pprof/ in a web browser.

• Select relevant links: The dashboard includes two links for goroutine profiling:

  • "goroutine" (http://localhost:8888/debug/pprof/goroutine?debug=1)
  • "full goroutine stack dump" (http://localhost:8888/debug/pprof/goroutine?debug=2)
• Analyze goroutine count: The "goroutine" link displays a list of all active goroutines, grouped by their shared code base. Each goroutine entry includes the number of instances of that goroutine.
• Inspect individual goroutines: The "full goroutine stack dump" link provides detailed information about each individual goroutine, including its stack trace and current state (e.g., receiving from a channel).

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