[cairo] Re: [poppler] Re: poppler profiling on geode
with cairo backend
tomeu at tomeuvizoso.net
Sat Jan 20 08:38:38 PST 2007
I'm sending it again to poppler (got lost in the moderation queue) and
to cairo (as requested by Carl Worth call for unresolved issues) in the
hope that someone will be interested in giving a hand.
On Fri, 2007-01-12 at 21:04 +0100, Tomeu Vizoso wrote:
> The pdf used to test is here:
> and the results of the profiling in the olpc are here:
> On Fri, 2007-01-12 at 18:54 +0100, Tomeu Vizoso wrote:
> > It's much much faster now, thanks!
> > Trying a different pdf with big images showed another need for
> > performance improvement.
> > After sysprofiling evince, pixman_compositeGeneral still accounted for a
> > 22% of CPU time. Inside it, fbFetchTransformed consumed itself a 17.7%
> > of total CPU time.
> > I can send the sysprof file and the pdf used to test it.
> > Thanks,
> > Tomeu
> > On Tue, 2007-01-09 at 15:48 -0800, Carl Worth wrote:
> > > On Sat, 06 Jan 2007 13:56:09 +0100, Tomeu Vizoso wrote:
> > > > So I guess that the patch for speeding composition using mmx is still
> > > > not applied in the latest cairo.
> > > >
> > > > Can I do anything to speed up its inclusion?
> > >
> > > Tomeu discovered that the unaligned-clip was scaling up by 10% with
> > > every call to the drawing function (oops!). So now that that's fixed
> > > it was easy to drop in Soeren's fix and get a 1.6x speedup for that
> > > test case.
> > >
> > > So try it out now and let us know if there is still any unexplained
> > > slowness.
> > >
> > > -Carl
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