[RFC/RFT] calloutng

[Alexander Motin]

On 21.12.2012 14:16, Fabian Keil wrote:
> Fabian Keil <freebsd-listen at fabiankeil.de> wrote:
>
>> Alexander Motin <mav at FreeBSD.org> wrote:
>>
>>> On 20.12.2012 15:26, Fabian Keil wrote:
>>>> Alexander Motin <mav at FreeBSD.org> wrote:
>>>>
>>>>> On 20.12.2012 12:56, Fabian Keil wrote:
>>>>>> Alexander Motin <mav at FreeBSD.org> wrote:
>>>>>>
>>>>>>> Experiments with dummynet shown ineffective support for very short
>>>>>>> tick-based callouts. New version fixes that, allowing to get as many
>>>>>>> tick-based callout events as hz value permits, while still be able to
>>>>>>> aggregate events and generating minimum of interrupts.
>>>>>>>
>>>>>>> Also this version modifies system load average calculation to fix some
>>>>>>> cases existing in HEAD and 9 branches, that could be fixed with new
>>>>>>> direct callout functionality.
>>>>>>>
>>>>>>> http://people.freebsd.org/~mav/calloutng_12_17.patch
>>>>>>
>>>>>> With this patch (and the previous one, I didn't test the others)
>>>>>> my mouse cursor is occasionally not reacting for short amounts of
>>>>>> time (less than a second, but long enough to be noticeable).
>>
>>>>> Could you try to revert part of the patch, related to dev/atkbdc? I am
>>>>> not strong in details of that hardware, but in comments there mention
>>>>> that they are related. May be lost keyboard interrupts (which polling
>>>>> rate was increased to 1 second) cause PS/2 mouse delays.
>>>>
>>>> I reverted the changes to sys/dev/atkbdc/* about an hour ago
>>>> and so far it's looking good. I'll report back tomorrow after
>>>> some more testing.
>
> Still looking good.

Thank you. I think it may be some locking issue in atkbdc code. I'll 
revert that part of the patch until somebody rewrite it properly.

-- 
Alexander Motin