Re: responsiveness: newer kernels causing lagging and blocking

[Dave Airlie]

On Thu, Feb 23, 2012 at 5:29 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Thu, Feb 23, 2012 at 9:21 AM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
>>
>> One mystery that has never been resolved is just why wine causes a flood
>> of xrandr/connection probes, and then there is still the underlying issue
>> that probing blocks the device and causes noticeable latency.
>
> Is there any chance that the EDID code would just have a "if I probed
> in the last second or two, let's not do it again and instead just
> return the cached data from last time" thing to just protect against
> some odd interrupt flood (or a user that asks for edid information
> explicitly like xrandr).

X already does that, if you can the randr interfaces it doesn't cause
a probe unless you ask for it.

wine must be doing something silly or just needs to call a different interface.

Dave.
>
>                   Linus
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