Performance problem since updating from 6.0-RELEASE to
6.0-STABLE last friday
Pierre-Luc Drouin
pldrouin at pldrouin.net
Tue Nov 22 08:06:55 PST 2005
Hajimu UMEMOTO wrote:
>Hi,
>
>
>
>>>>>>On Thu, 17 Nov 2005 11:24:16 -0500
>>>>>>Pierre-Luc Drouin <pldrouin at pldrouin.net> said:
>>>>>>
>>>>>>
>
>
>
>>Ok, there is new development. I realized by playing with
>>debug.acpi.disabled="smbat", debug.acpi.disabled="smbat cmbat" and
>>debug.acpi.disabled="cmbat", that my laptop battery is not a smbat,
>>but a cmbat. When I played with hw.acpi.battery.info_expire after to
>>have applied the patch for acpi_smbat.c, it was freezing less often
>>because that sysctl variable was shared by both cmbat and smbat. So I
>>can only get battery status from cmbat (disabling cmbat disables the
>>use of acpiconf -i loop). To get the status of my battery via cmbat
>>was working fine up to 6.0-RELEASE (included), but makes my laptop to
>>freeze since I upgraded to 6.0-stable with Nov 10th sources. What
>>change related to cmbat between 6.0-release and 6.0-stable could be
>>causing this?
>>
>>
>
>pldrouin> Has someone found how to fix this problem in -stable?
>
>Perhaps, I found the cause. acpi_cmbat_get_bif() is heavy process,
>and it was called only when ACPIIO_CMBAT_GET_BIF ioctl was issued
>explicitly, until smbat stuff was committed. However,
>acpiio_cmbat_get_bif() is called from every
>acpi_battery_get_battinfo() call, now.
>The attached patch will bring back to former behavior. Please try it
>and let me know the result.
>It is against 7-CURRENT as of today. If you want to try it on
>6-STABLE, you need to apply following diff before applying it:
>
>
>
Wonderful! It fixes it!! I applied both patches and everything seams to
be working fine now!
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