0.7.12.34

[sbcl.git] / README

diff --git a/README b/README
index 18578d6..5fed77a 100644 (file)
--- a/README
+++ b/README
@@ -1,3 +1,5 @@
+GENERAL INFORMATION
+

 Welcome to SBCL.
 
 To find out more about who created the system, see the "CREDITS" file.
 Welcome to SBCL.
 
 To find out more about who created the system, see the "CREDITS" file.

@@ -20,3 +22,18 @@ If you'd like to make suggestions, report a bug, or help to improve the
 system, please send mail to one of the mailing lists:
   sbcl-help@lists.sourceforge.net
   sbcl-devel@lists.sourceforge.net
 system, please send mail to one of the mailing lists:
   sbcl-help@lists.sourceforge.net
   sbcl-devel@lists.sourceforge.net

+
+
+SYSTEM-SPECIFIC HINTS
+
+for OpenBSD:
+  OpenBSD 3.0 has stricter ulimit values, and/or enforces them more
+  strictly, than its predecessors. Therefore SBCL's initial mmap()
+  won't work unless you increase the limit on the data segment from
+  the OpenBSD defaults, e.g. with
+    ulimit -S -d 1000000
+  before you run SBCL. Otherwise SBCL fails with a message like
+  "ensure_space: failed to validate xxxxxxx bytes at yyyyy". (SBCL
+  is just allocating this huge address space, not actually using this
+  huge memory at this point. OpenBSD <3.0 had no problem with this,
+  but OpenBSD 3.0 is less hospitable.)