That's fantastic! Tonight will try to hack the code to avoid this condition and will profile again on the board.
Thanks again for your interest, Tomeu On Wed, 2006-11-08 at 21:51 -0500, Jeff Muizelaar wrote: > On Wed, Nov 08, 2006 at 11:02:34AM +0100, Tomeu Vizoso wrote: > > Hi, > > > > this is the sysprof result of rendering several pages on evince, each > > taking approx. 4 seconds. > > > > It would be great if you found any opportunity to improve the > > performance of the cairo backend on this particular case (for example > > using less expensive operations than compositing). > > So I had a look at why pixman_compositeGeneral is being hit during text > rendering. It looks like this gets called for text when the document is > being rendered at weird scaling factors. > > For example with the pdf you provided: calling > poppler_page_render_to_pixbuf(..., scale=1.0, ...) > does not trigger any calls to pixman_compositeGeneral. Neither does: > poppler_page_render_to_pixbuf(..., scale=2.0, ...) > > However, > poppler_page_render_to_pixbuf(..., scale=0.5, ...) > does. As does: > poppler_page_render_to_pixbuf(..., scale=1.1, ...) > > I will follow up with the cairo people about why this happens and if > anything can be done to improve the situation. In the mean time it may > be possible to work around the problem by avoiding bad scaling factors. > > -Jeff _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
