[2pt] Describe LuaJIT profiler (aka "jit.p")

[olegrok]

Product: Tarantool
Root document: TBD
SME: @ igormunkin

Details

See link - https://www.tarantool.io/ru/doc/latest/book/admin/server_introspection/#jit-p

First of all, link to "The LuaJIT Profiler" is dead.

Secondly, it would be great to describe this feature in details started from flags and using some examples.

I expect to see something like in case with memprof.

ToDo

• The description of the profiler is there in a separate resource: https://docs.imun.cloud/luajit/v2.1/ext_profiler.html
• No need to duplicate this info in Tarantool documentation. The link to the article can be put in documentation, in a section related to different tooling useful for Tarantool users -- currently, there's no such a section, but later we can create it and put there the info about tools like Memory profiler, metrics, CPU profiler, etc.

[igormunkin]

There is LuaJIT 2.1 doc page I am hosting by myself and Mike's post in LuaJIT ml.