[cairo] Performance stress-case (librsvg)
behdad at behdad.org
Sun Dec 3 21:58:30 PST 2006
On Sun, 2006-12-03 at 18:47 -0500, Daniel Amelang wrote:
> On 12/3/06, Kalle Vahlman <kalle.vahlman at gmail.com> wrote:
> > In any case, the svg should be a nice test case for performance, given
> > that it is obviously not a trivial one to render.
> This got me thinking...one of the most valuable tools I can think of
> for helping the performance effort would be something that, for a
> given run, captured all external cairo calls (LD_PRELOAD style) _with_
> the data passed in to the functions, and packaged all that up somehow
> in a single (really big) tar file or something. Then, we have a
> 'replayer' that our perf tests could use to replay the sequence of
> calls with that captured data contained in the tar file. I think it
> would be really hard to create one that did all that automatically, as
> you have to know in what cases you want to copy data that a pointer
> points to (think create_for_data) and all that. And yes, the data
> would need to be stored in a architecture-independent format if you
> want to use it as a general perf test. But, at least we would only
> have to do it for the functions in cairo.h (haha, I said _only_), and
> maybe we can just start with the common ones and go from there.
This has been already discussed here:
I'm working on generating the wrappers as an extra .so file inside cairo
> I know, major blue sky here, but a guy can dream, right? It's the
> weekend. Go, go gadget lazyweb!
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> cairo at cairographics.org
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