From: David Antos <antos@bart.math.muni.cz>
Subject: Re: New context version...
Date: Tue, 6 Nov 2001 15:58:31 +0100 [thread overview]
Message-ID: <20011106155831.A1598@bart.math.muni.cz> (raw)
In-Reply-To: <20011106150524.2ac086b4.taco@elvenkind.com>; from taco@elvenkind.com on Tue, Nov 06, 2001 at 03:05:24PM +0100
On Tue, Nov 06, 2001 at 03:05:24PM +0100, Taco Hoekwater wrote:
>
> Hi Hans,
>
> This is unrelated. I got curious and did some searching on the web. The
> kapm-idled is a kernel thread that executes the HLT instruction if the kernel
> has nothing better to do. Reason (sort of correct): the chip consumes less
> power when executing HLT than when doing nothing ;)
Hi, Taco was faster than me and absolutelly correct. The power saving is not
the only reason, each Un*x has a process with the lowest possible priority
which runs when there is nothing to do. Some kind of that behaviour occurs in
all OSs. One possibility is to execute HLT, another is an infinite loop. HLT is
prefered as it saves energy and makes CPU cooler.
D.A.
next prev parent reply other threads:[~2001-11-06 14:58 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Your message of "Mon, 05 Nov 2001 15:17:46 +0100." <5.1.0.14.1.20011105151614.03e65e78@server-1>
2001-11-05 14:46 ` Patrick Gundlach
2001-11-05 15:55 ` Hans Hagen
2001-11-05 19:50 ` David Antos
2001-11-06 9:33 ` Hans Hagen
[not found] ` <20011106150524.2ac086b4.taco@elvenkind.com>
2001-11-06 14:58 ` David Antos [this message]
2001-11-06 14:50 ` Frans Goddijn
2001-11-06 15:25 ` Hans Hagen
2001-11-07 0:25 ` Berend de Boer
2001-11-05 15:26 ` Accents too high Patrick Gundlach
2001-11-05 16:27 ` Hans Hagen
2001-11-05 17:52 ` Patrick Gundlach
2001-11-06 9:39 ` Hans Hagen
2005-08-28 16:55 New context version Rob Ermers
2005-08-28 18:38 ` Taco Hoekwater
2005-08-28 21:43 ` Rob Ermers
2005-08-29 13:19 ` Hans Hagen
2005-08-29 13:22 ` r.ermers
-- strict thread matches above, loose matches on Subject: below --
2005-08-28 14:04 Rob Ermers
[not found] <Your message of "Mon, 05 Nov 2001 13:38:31 +0100." <5.1.0.14.1.20011105133734.0311b2f8@server-1>
2001-11-05 14:07 ` Accents too high Patrick Gundlach
2001-11-05 13:45 ` Frans Goddijn
2001-11-05 14:17 ` Hans Hagen
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