Effect of Cursor Movement

> Hello,
>
> To see this, Bring up BouncingAtomsMorph, enlarge the window, set a high atoms count so
> that you can easily sense atom movement.
>
> Notice how movement speeds up when the cursor is moved and slows when it stops? Turn
> on FPS. On my machine, frame rate is about 22 with no cursor movement and increases to
> around 36 when the cursor is moving. The cursor does not have to be in the window. It can
> be anywhere.
>
> Why should that be? It may not be a problem, but it is a curiosity. Any explanation?
>
> BTW this is Win7, cogwin-15.33.3427, Cuis 2478.
>
>   - Dan

> Hi Dan,
>
> (below)
> On 9/11/2015 1:19 PM, Dan Norton wrote:
> > Hello,
> >
> > To see this, Bring up BouncingAtomsMorph, enlarge the window, set a
> > high atoms count so
> > that you can easily sense atom movement.
> >
> > Notice how movement speeds up when the cursor is moved and slows
> > when it stops? Turn
> > on FPS. On my machine, frame rate is about 22 with no cursor
> > movement and increases to
> > around 36 when the cursor is moving. The cursor does not have to be
> > in the window. It can
> > be anywhere.
> >
> > Why should that be? It may not be a problem, but it is a curiosity.
> > Any explanation?
> >
> > BTW this is Win7, cogwin-15.33.3427, Cuis 2478.
> >
> >   - Dan
>
> Haven't even taken a look, so if I did maybe I would find something
> else... but for sure Cuis is triggering MouseMoveEvents, and looking
> for
> possible interested parties. That, on each Morphic cycle. So, each
> Morphic cycle might take a bit longer, and FPS can go a bit down.
>
> In any case, if you are curious, you can take a closer look. Often,
> questions like this lead to possible optimizations!
>

> On Fri, 2015-09-11 at 13:57 -0300, Juan Vuletich wrote:
>> Hi Dan,
>>
>> (below)
>> On 9/11/2015 1:19 PM, Dan Norton wrote:
>>> Hello,
>>>
>>> To see this, Bring up BouncingAtomsMorph, enlarge the window, set a
>>> high atoms count so
>>> that you can easily sense atom movement.
>>>
>>> Notice how movement speeds up when the cursor is moved and slows
>>> when it stops? Turn
>>> on FPS. On my machine, frame rate is about 22 with no cursor
>>> movement and increases to
>>> around 36 when the cursor is moving. The cursor does not have to be
>>> in the window. It can
>>> be anywhere.
>>>
>>> Why should that be? It may not be a problem, but it is a curiosity.
>>> Any explanation?
>>>
>>> BTW this is Win7, cogwin-15.33.3427, Cuis 2478.
>>>
>>>    - Dan
>> Haven't even taken a look, so if I did maybe I would find something
>> else... but for sure Cuis is triggering MouseMoveEvents, and looking
>> for
>> possible interested parties. That, on each Morphic cycle. So, each
>> Morphic cycle might take a bit longer, and FPS can go a bit down.
>>
>> In any case, if you are curious, you can take a closer look. Often,
>> questions like this lead to possible optimizations!
>>
> The issue he's describing sounds like the opposite of that.  Any chance
> this is related to the issue we discussed on vm-dev back in 2012? (The
> thread was titled "Cog VM idling performance")  Your fix back then
> mostly addressed the issue (I've noticed some minor idling slowdowns
> since then, but nothing as extreme as when I originally reported the
> issue)