akr	2014-09-05 01:41:12 +0900 (Fri, 05 Sep 2014)

  New Revision: 47389

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=47389

  Log:
    Describe about vfork().

  Modified files:
    trunk/NEWS
Index: NEWS
===================================================================
--- NEWS	(revision 47388)
+++ NEWS	(revision 47389)
@@ -53,6 +53,8 @@ with all sufficient information, see the https://github.com/ruby/ruby/blob/trunk/NEWS#L53
   * Extended method:
     * Process execution methods such as Process.spawn opens the file in write
       mode for redirect from [:out, :err].
+  * Process creation methods, such as spawn(), uses vfork() system call.
+    vfork() is faster than fork() when the parent process uses huge memory.
 
 * Symbol
   * New methods

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