Gc.Tweak(3)                      OCaml library                     Gc.Tweak(3)

NAME
       Gc.Tweak - GC Tweaks are unstable and undocumented configurable GC
       parameters, primarily intended for use by GC developers.

Module
       Module   Gc.Tweak

Documentation
       Module Tweak
        : sig end


       GC Tweaks are unstable and undocumented configurable GC parameters,
       primarily intended for use by GC developers.

       As well as using Gc.Tweak.set "foo" 42, they can also be configured in
       OCAMLRUNPARAM, using the following syntax:

       OCAMLRUNPARAM='Xfoo=42'

       Additionally, OCAMLRUNPARAM=Xhelp will show the available GC tweaks.


       Since 5.5






       val set : string -> int -> unit

       Change a parameter.  Raises Invalid_argument if no such parameter
       exists



       val get : string -> int

       Retrieve a parameter value.  Raises Invalid_argument if no such
       parameter exists



       val list_active : unit -> (string * int) list

       Returns the list of parameters and their values that currently have
       non-default values



OCamldoc                          2026-06-22                       Gc.Tweak(3)