Re: gtk performance testing [was Re: GNOME 2.11/2.12 targeting GTK+ 2.8 (ie cairo based)]

[Alexander Larsson <alexl redhat com>]

On Fri, 2005-06-10 at 09:21 -0400, Luis Villa wrote:
> On 6/9/05, Luis Villa <luis villa gmail com> wrote:
> > On 6/9/05, Luis Villa <luis villa gmail com> wrote:
> > > On 6/9/05, Jon K Hellan <hellan acm org> wrote:
> > > > On Thu, 2005-06-09 at 14:39 +0100, Mark McLoughlin wrote:
> > > > >       If we're talking about performance/stability in the context of whether
> > > > > GNOME 2.12 should use GTK+ 2.8, we're effectively saying "I think the
> > > > > GTK+ team might ship a unstable or unacceptably slow 2.8.0 release;
> > > > > GNOME shouldn't commit to using GTK+ 2.8 yet". I would hope that we
> > > > > would have more confidence in the judgement of the GTK+ team than that.
> > > >
> > > > Crashes and performance are very different types of problem. Crashes get
> > > > fixed once they can be reproduced. Fixing bad performance can take a
> > > > long time.
> > > >
> > > > Well, I haven't tested gtk2.7 since just after Cairo got added, so I
> > > > can't tell whether there is a performance problem. Has anybody got
> > > > numbers?
> > >
> > > I haven't seen this announced on gtk-devel or here, so:
> > >
> > > http://gtkperf.sourceforge.net/
> > >
> > > Apparently this is a test tool to test gtk performance. Would be great
> > > to have someone test 2.7 with it.
> > 
> > Went ahead and did it myself. TextView is brutally slower (300-400%),
> > some other things are 25-30% slower, and some things actually get
> > faster. Disclaimer: I'm pretty sure I did this right and I'm linking
> > against the right stuff, but these numbers should be confirmed by an
> > expert, and I can't speak to the validity of the tool's measurements
> > itself, except to note that scrolling in a textview area is *visibly*
> > slower.
> 
> New third column is HEAD + glitz, with an x31's ATI card. Still with
> Mist. Performance is slightly slower than HEAD just about everywhere,
> actually. I'll probably do an N=100 run with default theme +
> 2.6/HEAD/HEAD + glitz sometime later. Have to figure out how to
> automate this. :)

I didn't know you could even use glitz with gtk+ HEAD?
I asked owen, and he didn't think it worked atm.
How did you run this?

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Alexander Larsson                                            Red Hat, Inc 
                   alexl redhat com    alla lysator liu se 
He's a suicidal drug-addicted ex-con fleeing from a secret government 
programme. She's a sarcastic insomniac mechanic trying to make a difference in 
a man's world. They fight crime!