Re: Re: how to write snappy benchmark?

Owen Taylor <[email protected]>
Newsgroups gmane.comp.xfree86.forum
Message-ID <[email protected]>
On Sat, 2003-07-05 at 11:56, Marko Macek wrote:
> Hi!
> 
> David Jeske wrote:
> > I'm interested in soliciting ideas about how to write this "snappy"
> > benchmark that's been referred to a few times. While I don't have time
> > to write the benchmarks, if I can get a clear picture of what will
> > help, I may be able to project manage and pay to have them
> > written. Here is how I would state the objective:
> 
> A good base for benchmark is:
> 
> $ while true ; do xrefresh ; sleep 0.1 ; done
> 
> (time could be varied, and implemented in C for less overhead)
> 
> Things that can be done with it:
> 
> 1) observe repaints. Ideally, nothing on the screen will blink
> (the only app I can find that does this right is Mozilla,
> mostly by my efforts).

Note that the reason that Mozilla doesn't blink is the same
reason:

 A) When you switch to the desktop with Mozilla on it and
    Mozilla is swapped out, you see Mozilla slowly appear
    out of whatever you had before, often first as a blinking
    cursor in the URL line.

 B) Windows dragged over Mozilla's content area leave huge
    ugly trails of window border bits.

Some of us consider not blinking in Mozilla's way a distinctly
bad thing. 

Regards,
					Owen
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