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FreeBSD uses the HALT instruction in its idle loop to save power.

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Noticed by:	Stephen Roome <steve@visint.co.uk>
This commit is contained in:
David E. O'Brien 1997-03-19 17:17:59 +00:00
parent b90e65a439
commit 282c34bc1a
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=1328
1 changed files with 7 additions and 5 deletions
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12
FAQ/FAQ.sgml
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@ -1,5 +1,5 @@
<!DOCTYPE linuxdoc PUBLIC "-//FreeBSD//DTD linuxdoc//EN">
<!-- $Id: FAQ.sgml,v 1.37 1997-03-13 01:00:32 joerg Exp $ -->
<!-- $Id: FAQ.sgml,v 1.38 1997-03-19 17:17:59 obrien Exp $ -->
<article>
@ -7,7 +7,7 @@
<author>Maintainer: Peter da Silva <tt><htmlurl url='mailto:pds@FreeBSD.ORG'
name='&lt;pds@FreeBSD.ORG&gt;'></tt>
<date>$Date: 1997-03-13 01:00:32 $
<date>$Date: 1997-03-19 17:17:59 $
<abstract>
This is the FAQ for FreeBSD systems version 2.X All entries are
assumed to be relevant to FreeBSD 2.0.5+, unless otherwise noted.
@ -2153,9 +2153,11 @@ pseudo-device vn #Vnode driver (turns a file into a device)
now, working on their new ``scratch and sniff'' GUI. It's a
funny old business we're in!
Seriously, Linux uses the ``<tt/HALT/'' instruction when the
system is idle thus lowering its energy consumption and therefore
the heat it generates.
Seriously, both FreeBSD and Linux uses the ``<tt/HALT/''
instruction when the system is idle thus lowering its energy
consumption and therefore the heat it generates. Also if you
have APM (automatic power management) configured, then FreeBSD
can also put the CPU into a low power mode.
<sect1>
<heading>Who's scratching in my memory banks??</heading>