[poppler] too slow when opening PDF 1.5 files

[Albert Astals Cid]

A Dimecres, 24 de febrer de 2010, Pablo Rodríguez va escriure:
> Hi there,
> 
> I have just discovered that evince (and also xpdf) is much slower
> dealing with PDF 1.5 documents than it is with the same document in PDF
> 1.4.
> 
> Here you have the test (generated both with XeLaTeX):
> 
> http://www.tei-c.org/release/doc/tei-p5-doc/en/Guidelines.pdf (PDF 1.4)
> http://users.ox.ac.uk/~rahtz/Guidelines.pdf (PDF 1.5, much smaller)
> 
> Evince and pdfinfo show a huge difference when opening both versions and
> acroread 9.3 and mupdf-r938 show almost an irrelevant one.
> 
> Tests bellow (correct me if I'm wrong). Guidelines.pdf is the PDF 1.5
> document and TEI_Guidelines.pdf is the PDF 1.4 document.

Unless you are going to develop a fix, please file a bug report or this will 
end up lost in the history of the list.

On the other hand i don't see why you are surprised, one file is compressed, 
the other is not, thus reading the compressed file takes longer.

On the other hand probably it can be made faster, yes.

Albert

> 
> I hope it helps,
> 
> 
> Pablo
> 
> 
> 
> time evince TEI_Guidelines.pdf
> real	0m15.900s
> user	0m1.504s
> sys	0m0.192s
> 
> time evince Guidelines.pdf
> real	0m29.384s
> user	0m26.510s
> sys	0m0.320s
> 
> time pdfinfo TEI_Guidelines.pdf
> real	0m0.253s
> user	0m0.220s
> sys	0m0.024s
> 
> time pdfinfo Guidelines.pdf
> real	0m16.328s
> user	0m15.433s
> sys	0m0.116s
> 
> time acroread TEI_Guidelines.pdf
> real	0m5.828s
> user	0m3.220s
> sys	0m0.520s
> 
> time acroread Guidelines.pdf
> real	0m6.297s
> user	0m4.132s
> sys	0m0.460s
> 
> time mupdf TEI_Guidelines.pdf
> real	0m1.670s
> user	0m0.264s
> sys	0m0.028s
> 
> time mupdf Guidelines.pdf
> real	0m2.106s
> user	0m0.384s
> sys	0m0.020s
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