[poppler] too slow when opening PDF 1.5 files

[Pablo Rodríguez]

On 02/24/2010 10:33 PM, Albert Astals Cid wrote:
> 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.

Sorry, Albert. I'm not using the latest version from poppler, so I
wanted to know whether this was already been fixed (but I forgot to
mention it too :-)).

I'll report the bug right now.

> 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.

I'm not good at math, but it takes only 25-30% longer with acroread and
mupdf to open the compressed file.

Thanks,


Pablo