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SubjectRe: [BUG] linux-2.6.11-rc3 probably in ACPI battery procfs ...
Stefan Seyfried wrote:
> aurelien francillon wrote:
>
>>hi,
>>since just before linux-2.6.11-rc3 ( i think it's rc2-bk10 ) there
>>seems to have a bug in the acpi part of the proc file system :
>>reading /proc/acpi/battery/BAT0/info takes a very long time and locks
>>up the computer, time gives:
>>cat /proc/acpi/battery/BAT0/info 0.00s user 6.76s system 12030% cpu
>>0.056 total
>>I notice it because kde reads it every 10seconds ... so the compuer gets
>>locked for ~5s every ~10s ...
>
>
>>computer is a dell D600 laptop,
>
>
> I have seen the same on a D600 and an Compaq Armada E500, not 6 seconds
> but ~1.2 seconds. Try to put a
>
> #define ACPI_ENABLE_OBJECT_CACHE 1
>
> at the end of include/acpi/acpi.h (before the last #endif), this sort of
> fixed it for me (now it again needs ~0.2 seconds, still way too long,
> but the same as with the last good 2.6.11-rc2-bk9).
>
> Good luck :-)
>
> Stefan
> -
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that's "fixed" it for me too,
thanks
Aurel

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