Re: [Gnash-dev] Optimization to jpeg decoding

[strk]

On Thu, Nov 27, 2008 at 02:48:48AM -0500, dolphinling wrote:
> strk wrote:
> >On Wed, Nov 26, 2008 at 08:32:03PM -0500, dolphinling wrote:
> >>boost::scoped_array<unsigned char>::operator[] is called nearly 25 
> >>million times from readSWFJpeg3, for 5.67% of the run time, but I don't 
> >>see a trivial way to eliminate those calls like with getWidth.
> >
> >I tought that operator would be inlined ? Are you building with inlines
> >turned off by any chance ?
> 
> Looks like it was because it was a debug build. I thought gcc kept 
> optimizations in debug by default, I guess you need to tell it to. In a 
> non-debug build, that doesn't show in the profiler (and getWidth is up to 
> 2.64% of the runtime).

Consider copying parts of the profile output to the wiki.
We've done it in other occasions, for a broader view and commenting
on it: http://wiki.gnashdev.org/Profiling

--strk;