Mailinglist Archive: opensuse (2358 mails)

[tomas@xxxxxxxxxxxx (S.Toms)]

On 26 Oct 1999, Lenz Grimmer wrote:

lg> Hi Jon,
lg> 
lg> On Mon, 25 Oct 1999, Jon Pennington wrote:
lg> 
lg> > Care to back that up with some docs, Mr. `I'm not a kernel hacker'? :)
lg> 
lg> /usr/src/linux/Documentation/Configure.help:
lg> 
lg> "Do CPU IDLE calls
lg> CONFIG_APM_CPU_IDLE
lg>   Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
lg>   On some machines, this can activate improved power savings, such as
lg>   a slowed CPU clock rate, when the machine is idle. These idle calls
lg>   are made after the idle loop has run for some length of time (e.g.,
lg>   333 mS)...."
lg> 
lg> 
lg> http://www.notebookreview.com/coolcpu.html :
lg> 
lg> "Some operating systems, like Linux, NT and OS/2 have a so-called "idle
lg> loop" - a loop that's always executed when the CPU has nothing to do. This
lg> loop consists of halt (HLT) instructions. CPUs like the AMD K6, the Cyrix
lg> 6x86 and 6x86MX have a special feature called "suspend-on-halt"."
lg> 

  That must of stung, ehh Jon :)


-- 
        S.Toms - tomas@xxxxxxxxxxxx - New homepage coming soon
                   SuSE Linux v6.2+ - Kernel 2.2.13

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