svn commit: r39253 - head/en_US.ISO8859-1/books/faq

Eitan Adler eadler at
Sun Jul 22 22:19:48 UTC 2012

Author: eadler (src,ports committer)
Date: Sun Jul 22 22:19:48 2012
New Revision: 39253

  Remove bogus information about SMP processors
  Approved by: wblock


Modified: head/en_US.ISO8859-1/books/faq/book.sgml
--- head/en_US.ISO8859-1/books/faq/book.sgml	Sun Jul 22 22:19:46 2012	(r39252)
+++ head/en_US.ISO8859-1/books/faq/book.sgml	Sun Jul 22 22:19:48 2012	(r39253)
@@ -2262,19 +2262,9 @@
 	      support on Intel CPUs that support this feature.  A kernel
 	      with the <literal>options SMP</literal> feature enabled
 	      will automatically detect the additional logical
-	      processors.  The default &os; scheduler treats the logical
-	      processors the same as additional physical processors; in
-	      other words, no attempt is made to optimize scheduling
-	      decisions given the shared resources between logical
-	      processors within the same CPU.  Because this naive
-	      scheduling can result in suboptimal performance, under
-	      certain circumstances it may be useful to disable the
-	      logical processors with the
-	      <varname>machdep.hlt_logical_cpus</varname> sysctl
-	      variable.  It is also possible to halt any CPU in the idle
-	      loop with the <varname>machdep.hlt_cpus</varname> sysctl
-	      variable.  The &man.smp.4; manual page has more
-	      details.</para>
+	      processors.</para>
+	    <para>&man.smp.4; has more details.</para>

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