The file http://www.rtl-longueuil.qc.ca/images/reseau.pdf is rendered extremely slow with the cairo backend (more than 50 seconds) using poppler-glib-demo.
The same file is rendered in about 8 seconds with the splash/arthur backend using poppler_qt4viewer.
Created attachment 48707 [details]
The file which shows this behabiour
The slowdown is in TextOutputDev.