Re: ACPI problems (was: Re: Synaptics PS/2 driver and 2.6.0-test11)

[Lukas Hejtmanek]

On Tue, Dec 30, 2003 at 01:37:11AM +0100, Peter Osterlund wrote:
> That's normal. The hardware generates 80 packets/second and it keeps
> generating packets 1 second after you stop using the touchpad. Each
> packet is 6 bytes and the i8042 controller generates one
> interrupt/byte.
> 
> 500 interrupts/s shouldn't be any problem to handle though.

Well it depends. If ACPI disables interrupts or it keeps some spin lock then
there is a high probability that some interrupts are lost. 

If I do (with no load nor i/o stress):

# time cat /proc/acpi/battery/BAT0/state
present:                 yes
capacity state:          ok
charging state:          unknown
present rate:            unknown
remaining capacity:      4000 mAh
present voltage:         14800 mV

real    0m1.118s
user    0m0.001s
sys     0m0.007s


However for me it looks odd that sound is not corrupted (and I believe 
that dma buffer does not hold 1 sec of sound data) while serio and soft modem
is.

-- 
Lukáš Hejtmánek
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