* Re: ACPI: EC: evaluating _Q10
[not found] <45992109.9050009@m3y3r.de>
@ 2007-01-02 17:05 ` Len Brown
2007-01-02 20:32 ` Thomas Meyer
0 siblings, 1 reply; 4+ messages in thread
From: Len Brown @ 2007-01-02 17:05 UTC (permalink / raw)
To: Thomas Meyer; +Cc: linux-kernel, linux-acpi
On Monday 01 January 2007 09:56, Thomas Meyer wrote:
> I know this topic was already on the list. But 2.6.20-rc3 still gives me
> tons of these messages in the log buffer:
>
> "ACPI: EC: evaluating _Q10
> ACPI: EC: evaluating _Q10
> ACPI: EC: evaluating _Q10
> ACPI: EC: evaluating _Q10
> ACPI: EC: evaluating _Q10
> [and so on]"
>
> Is this an error at all?
not an error, just a stray printk in an EC event handler.
fix already queued to linus.
The bigger question is why you get "tons of these" --
as EC events are usually infrequent.
Do you have a big number next to "acpi" in /proc/interrupts?
If so, at what rate is it growing?
thanks,
-Len
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: ACPI: EC: evaluating _Q10
2007-01-02 17:05 ` ACPI: EC: evaluating _Q10 Len Brown
@ 2007-01-02 20:32 ` Thomas Meyer
2007-01-03 3:41 ` Len Brown
0 siblings, 1 reply; 4+ messages in thread
From: Thomas Meyer @ 2007-01-02 20:32 UTC (permalink / raw)
To: Len Brown; +Cc: linux-kernel, linux-acpi
Len Brown schrieb:
> The bigger question is why you get "tons of these" --
> as EC events are usually infrequent.
> Do you have a big number next to "acpi" in /proc/interrupts?
> If so, at what rate is it growing?
>
> thanks,
> -Len
maybe tons were a bit to overstated... After a fresh reboot, i count 110
_q10 and one _q21messages now with 8 min. uptime and around 10300 acpi
interrupts.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: ACPI: EC: evaluating _Q10
2007-01-02 20:32 ` Thomas Meyer
@ 2007-01-03 3:41 ` Len Brown
2007-01-03 7:46 ` Thomas Meyer
0 siblings, 1 reply; 4+ messages in thread
From: Len Brown @ 2007-01-03 3:41 UTC (permalink / raw)
To: Thomas Meyer; +Cc: linux-kernel, linux-acpi
> > The bigger question is why you get "tons of these" --
> > as EC events are usually infrequent.
> > Do you have a big number next to "acpi" in /proc/interrupts?
> > If so, at what rate is it growing?
>
> maybe tons were a bit to overstated... After a fresh reboot, i count 110
> _q10 and one _q21messages now with 8 min. uptime and around 10300 acpi
> interrupts.
480 sec/110 ec events = 4 seconds/event. This doesn't worry me.
Could be battery updates, thermal updates etc.
480/10300 = an interrupt every 46 ms.
This is certainly not right.
Have you always seen runaway acpi interrupts on this box, no matter the kernel?
thanks,
-Len
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: ACPI: EC: evaluating _Q10
2007-01-03 3:41 ` Len Brown
@ 2007-01-03 7:46 ` Thomas Meyer
0 siblings, 0 replies; 4+ messages in thread
From: Thomas Meyer @ 2007-01-03 7:46 UTC (permalink / raw)
To: Len Brown; +Cc: linux-kernel, linux-acpi
Len Brown schrieb:
>>> The bigger question is why you get "tons of these" --
>>> as EC events are usually infrequent.
>>> Do you have a big number next to "acpi" in /proc/interrupts?
>>> If so, at what rate is it growing?
>>>
>> maybe tons were a bit to overstated... After a fresh reboot, i count 110
>> _q10 and one _q21messages now with 8 min. uptime and around 10300 acpi
>> interrupts.
>>
>
> 480 sec/110 ec events = 4 seconds/event. This doesn't worry me.
> Could be battery updates, thermal updates etc.
>
> 480/10300 = an interrupt every 46 ms.
> This is certainly not right.
> Have you always seen runaway acpi interrupts on this box, no matter the kernel?
>
To be honest i didn't care and knew about that this could be an problem
until now. But the biggest part of the acpi interrupts seems to happen
while the first minutes, maybe while booting because with 22 min. uptime
i get these values:
CPU0 CPU1
0: 413784 0 IO-APIC-edge timer
9: 14544 0 IO-APIC-fasteoi acpi
24 min. uptime:
CPU0 CPU1
0: 435875 0 IO-APIC-edge timer
9: 15247 0 IO-APIC-fasteoi acpi
26 min. uptime:
0: 470428 0 IO-APIC-edge timer
9: 16251 0 IO-APIC-fasteoi acpi
So let's say approximatley 700 to 1000 acpi interrupts in 120 seconds. I
guess this sounds better, doesn't it?
^ permalink raw reply [flat|nested] 4+ messages in thread
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2007-01-02 17:05 ` ACPI: EC: evaluating _Q10 Len Brown
2007-01-02 20:32 ` Thomas Meyer
2007-01-03 3:41 ` Len Brown
2007-01-03 7:46 ` Thomas Meyer
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