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List:       acpi4linux
Subject:    [ACPI] Why don't use C2/C3 with high latency?
From:       Ruediger Otte <tierra.y.libertad () gmx ! net>
Date:       2003-03-28 18:22:45
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Hi,

on my system (Gigabyte GA-7VTXH, VIA KT266A Chipset, Athlon XP 1600+)
the C2 processor powerstate have not been enabled until I set the
ACPI_PROCESSOR_MAX_C2_LATENCY to a value above 100. The system runs
quite normal after this change and consumes much less power than before.
Also the processor temperature goes down from 48°C to under 35°C when
idle.

So why is the MAX_C2_LATENCY set to this value? Is it possible to
optimize the use of this high latency C2 to only use it when the system
is _really_ idle? 

-- 
Rüdiger



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