fix structure stack allocation for high-debug code

[sbcl.git] / doc / sbcl.1

diff --git a/doc/sbcl.1 b/doc/sbcl.1
index a877657..5f44109 100644 (file)
--- a/doc/sbcl.1
+++ b/doc/sbcl.1
@@ -41,13 +41,13 @@ To run SBCL, type "sbcl". After startup messages a prompt
 execute it, print any values returned, give you another prompt, and
 wait for your next input.
 
 execute it, print any values returned, give you another prompt, and
 wait for your next input.
 

-\f(C
+\f(CR

   $ sbcl
   ...[startup messages elided]...
   * (+ 1 2 3)
 
   6
   $ sbcl
   ...[startup messages elided]...
   * (+ 1 2 3)
 
   6

-  * (quit)
+  * (exit)

 \fR
 
 Most people like to run SBCL as a subprocess under Emacs. The Emacs
 \fR
 
 Most people like to run SBCL as a subprocess under Emacs. The Emacs

@@ -122,6 +122,22 @@ As a runtime option equivalent to \-\-noinform \-\-disable\-ldb
 <filename>. See the description of \-\-script as a toplevel option
 below.
 .TP 3
 <filename>. See the description of \-\-script as a toplevel option
 below.
 .TP 3

+.B \-\-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.
+.TP 3
+.B \-\-no-merge\-core\-pages
+Ensures that no sharing hint is provided to the operating system.
+.TP 3
+.B \-\-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.
+.TP 3

 .B \-\-help
 Print some basic information about SBCL, then exit.
 .TP 3
 .B \-\-help
 Print some basic information about SBCL, then exit.
 .TP 3