view .arcconfig @ 40958:abd7b75e80bc

contrib: provide a small script that draw performance plot

We have been using this script to look into the result of various runs of the
`hg perfrevlogwrite` command. It seems useful enough to be shared more widely.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}