Performance Counters

[Mark Richman]

I'm relatively new to Go, coming from a Windows/.NET background primarily. Does the Go runtime itself offer performance counters similar to what Windows makes available via perfmon? Specifically, I'm looking to capture realtime (not via a dump) metrics on heap usage, thread counts, GC collections, HTTP queue length, etc.

[Diego Medina]

Hi,

You may want to look at

https://golang.org/pkg/expvar/

If your app is already running the built in server, you can 

import _ "expvar"

and then you will see a lot of internal counters at

localhost:6060/debug/vars

you can then add your own counters to it, which will also be displayed under that same url

Here is a blog post about integrating it datadog (you can use any monitoring tool you wish though)

https://www.datadoghq.com/blog/instrument-go-apps-expvar-datadog/

Hope that's what you were looking for.

Thanks

Diego

[Mark Richman]

Thanks Diego! I will check it out. Looks like it's what I'm after.