These programs follow the usual GNU command line syntax, with long options starting with two dashes
(`-'). A summary of options is included below.
-s|--socket=SOCKET|HOSTNAME:PORT
Specify the location of the renderd socket or hostname and port to connect to.
-m|--map=MAP
Specify the rendering style to test. The default is "default"
-n|--num-threads=N
The number of parallel request threads (default 1).
-z|--min-zoom=ZOOM
Only render tiles greater or equal to this zoom level (default is 0).
-Z|--max-zoom=ZOOM
Only render tiles less than or equal to this zoom level (default is 20).
-h|--help
Print out a help text for render_speedtest
-V|--version
Print out the version number for render_speedtest