[ltp] kapm-idled

George Staikos linux-thinkpad@www.bm-soft.com
Wed, 9 May 2001 10:21:35 -0400


On Wednesday 09 May 2001 05:30, Falco Cesare wrote:
> I was playing with top on my TP i1200 (Debian 2.2 with Kernel 2.4.3) and i
> noticed the process
> kapm-idled doing over 25% of the cpu.
>
> I think it's a kernel daemon (maybe apm=advanced power management???), but
> it seems so expensive for cpu usage...

  That's an idle daemon which just (iirc) just issues halts to preserve power 
for the CPU.  Now I did install one kernel on my i Series that had the idle 
daemon using heavy cpu and actually making the machine very slow.  I upgraded 
and now all works fine.  The annoying thing is that it screws up statistics, 
and I think they have fixed this in the more recent 2.4.x kernels.  In fact, 
on my 2.4.1 Mandrake patched kernel, this doesn't show any cpu load % anymore 
but the cpu _Time_ still goes up (which makes sense to do).

-- 

George Staikos


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