don't stack-allocate specialized vectors on non-conservtive control stacks

[sbcl.git] / doc / manual / start-stop.texinfo

diff --git a/doc/manual/start-stop.texinfo b/doc/manual/start-stop.texinfo
index 362ad40..ece3c90 100644 (file)
--- a/doc/manual/start-stop.texinfo
+++ b/doc/manual/start-stop.texinfo
@@ -132,6 +132,13 @@ process, and is also provided as an extension to the user.
 @include fun-sb-ext-save-lisp-and-die.texinfo
 @include var-sb-ext-star-save-hooks-star.texinfo
 
 @include fun-sb-ext-save-lisp-and-die.texinfo
 @include var-sb-ext-star-save-hooks-star.texinfo
 

+In cases where the standard initialization files have already been loaded
+into the saved core, and alternative ones should be used (or none at all),
+SBCL allows customizing the initfile pathname computation.
+
+@include var-sb-ext-star-sysinit-pathname-function-star.texinfo
+@include var-sb-ext-star-userinit-pathname-function-star.texinfo
+

 To facilitate distribution of SBCL applications using external
 resources, the filesystem location of the SBCL core file being used is
 available from Lisp.
 To facilitate distribution of SBCL applications using external
 resources, the filesystem location of the SBCL core file being used is
 available from Lisp.

@@ -238,6 +245,26 @@ description of @code{--script} as a toplevel option below. If there
 are no other commandline arguments following @code{--script}, the
 filename argument can be omitted.
 
 are no other commandline arguments following @code{--script}, the
 filename argument can be omitted.
 

+
+@item --merge-core-pages
+When platform support is present, provide hints to the operating system
+that identical pages may be shared between processes until they are
+written to.  This can be useful to reduce the memory usage on systems
+with multiple SBCL processes started from similar but differently-named
+core files, or from compressed cores.  Without platform support, do
+nothing.
+
+
+@item --no-merge-core-pages
+Ensures that no sharing hint is provided to the operating system.
+
+
+@item --default-merge-core-pages
+Reverts the sharing hint policy to the default: only compressed cores
+trigger hinting.  Uncompressed cores are mapped directly from the core
+file, which is usually enough to ensure sharing.
+
+

 @item --help
 Print some basic information about SBCL, then exit.
 
 @item --help
 Print some basic information about SBCL, then exit.