Re: Help CPU usage at 8.9% ?

[Rasoul Hajikhani <rhajikhani exchange office etoys com>]

--p,
how is it done, one gtk_timeout_add() for all _TWTY of them? Sorry man but
I am new to the whole concept of gtk... 
-r

On Wed, 15 Nov 2000, Paul Barton-Davis wrote:

> In message <Pine LNX 4 10 10011151819450 2040-100000 localhost localdomain>you 
> write:
> >I have this piece of code that when run, has a 9.0% cpu usage
> 
> Ah, did you mention you were using GtkLevelHold the last time ? :))
> 
> Yes, if you have twenty of these suckers updating every 10msecs,
> you'll be burning a notable fraction of your CPU. The way they use
> GtkRgb (and GdkRgb below it) is not supremely efficient.
> 
> For my project ardour (http://ardour.sourceforge.net), I typically
> have 26 on screen, and its been a growing concern of mine. It would be
> possible to do 90% of the functionality with gdk_copy_area() and 1 or
> 2 pixmaps, but the level *hold* bar is a little tricker to get right.
> 
> So basically, yep, this is exactly what you'd expect.
> 
> However, I would point out that your implementation could be
> improved. You only need a single gtk_timeout_add() - that function can
> itself loop through all _TWTY LevelHolds and update them. This will
> reduce the strain on the main loop scheduling in glib. Right now, you
> have one timeout per bar, which is the wrong way around, IMHO
> 
> --p (seasoned LevelHold user and hacker)
> 
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