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SubjectRe: [Bf-committers] [RFC] Re: Blender profiling-1 O16.2int
On Tue, 26 Aug 2003, Kester Maddock wrote:

>
> On Sun, Aug 17, 2003 at 11:36:42PM +1000, Con Kolivas wrote:
> > Now normally, blender should just sleep and wait till X comes
> > alive again before it does anything. However here it shows clearly that
> > it is spinning madly looking for something from X, and poor X can't do
> > anything. This is the busy on wait I've described.
>
> > Second, any applications that exhibit this should be fixed since it is a bug.
>
> Say if blender is polling the mouse in the view rotate loop? (If so, you
> should be able to just hold down the middle mouse to starve, without moving
> the mouse.)

yes i've mentioned this in the past. holding the middle mouse or right
mouse button _without_doing_anything_ eats up cpu time. it is clearly
a waste of cpu time. nobody responded.

> Is this really a bug in the application? Blender is interactive while rotating
> the view. More CPU means more frames per second which gives the user a
> better experience. The CPU usage will drop down when the user releases the
> middle mouse button.
>
> (OK, in this specific case blender could update the screen on mouse move
> events, but what about the general case eg a 3d game, where the screen
> is updated by eg monster ai?)
>
> And how do you fix it? Would sleep(0) in these loops do, or do you need to
> select(...) on X?
>
> CC me please on replys.
>
> Thanks,
>
> Kester Maddock.
> ^ sends occaisional patches to blender.
>
>
> _______________________________________________
> Bf-committers mailing list
> Bf-committers@blender.org
> http://www.blender.org/mailman/listinfo/bf-committers
>

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