Add pprof links to landing page

[SuperQ]

Make it easier for users to fetch and download pprof data for debugging.

• Add a link to https://pprof.me for easy sharing.

[metalmatze]

That is an excellent idea!
It will make it a lot easier to get profiles from users.

[SuperQ]

@bboreham What do you think of adding something like this to Prometheus /status?

[bboreham]

Good idea; I had some suggestions about wording.

What would you think if I said it should offer both pprof.me and flamegraph.com ?

[bboreham]

What do you think of adding something like this to Prometheus /status?

Sure. I guess the page with most info about memory is /tsdb-status. Suspect what people really want is a top-level breakdown like "40% on samples, 30% on scraping, 20% on remote-write". Which we don't know how to do accurately, but might be able to approximate in a useful way.

[dswarbrick]

It might be worth mentioning somewhere in docs that these links will be ineffectual (and most likely just bounce back to the landing page, albeit with additional path suffixes each time) unless the exporter imports net/http/pprof.

[SuperQ]

My plan is to add pprof handling to the exporter-toolkit.