Re: Speeding up pdf:api2

--- In [email protected], "spinningwebz2002" 
<spinningwebz2002@...> wrote:
>
> I looking for ways of speeding up how long it takes PDF::API2 to 
get 
> started (once it gets going it is very spiffy). One of the things I 
> noticed while profiling it that it loads the uniglyph.txt file. Can 
> this be trimmed down if you know you are not using all the unicode 
> characters? Would this increase the startup time? If not, are there 
> other ways of speeding it up?
> 
> I have some basic caveats that I will be using with the PDF:API2, 
maybe 
> there are things that could be done to make it quicker:
> 
> 1. I will not be using any internal fonts.
> 2. I will always be using specific fonts that I load with ttfont.
> 3. I will always be using the english character set.
> 4. All images inserted into the pdf will always be jpg.
> 
> Bill H
>

As a follow, I decided to trim off all the glpyhs in uniglyph.txt 
above $FF and using the perl profiler to examine it:

Original uniglyph.txt:

Total Elapsed Time = 4.850968 Seconds
  User+System Time = 4.747968 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 9.20   0.437  0.499     12   0.0364 0.0416  PDF::API2::Util::BEGIN
 7.37   0.350  0.350  96795   0.0000 0.0000  
PDF::API2::Basic::TTF::Table::read
 7.27   0.345  0.345      3   0.1150 0.1150  main::parseHtml
 5.73   0.272  0.609   9238   0.0000 0.0001  
PDF::API2::Basic::TTF::Loca::read
 4.91   0.233  0.341  21056   0.0000 0.0000  
PDF::API2::Basic::TTF::Hhea::read
 4.65   0.221  0.235    219   0.0010 0.0011  Exporter::import
 3.90   0.185  0.904  21040   0.0000 0.0000  
PDF::API2::Basic::TTF::Hmtx::read
 3.64   0.173  0.329    825   0.0002 0.0004  
PDF::API2::Matrix::multiply
 3.54   0.168  1.214     44   0.0038 0.0276  PDF::API2::BEGIN
 3.43   0.163  0.163   4689   0.0000 0.0000  
PDF::API2::Basic::TTF::Glyph::new
 3.37   0.160  0.228  21040   0.0000 0.0000  
PDF::API2::Basic::TTF::Hmtx::_read
 3.24   0.154  0.285  35204   0.0000 0.0000  
PDF::API2::Basic::TTF::Maxp::read
 3.14   0.149  0.149  14356   0.0000 0.0000  
PDF::API2::Resource::CIDFont::True
                                             Type::fontfile
 2.95   0.140  0.986   4646   0.0000 0.0002  
PDF::API2::Resource::CIDFont::True
                                             
Type::FontFile::subsetByCId
 2.61   0.124  0.169      6   0.0207 0.0282  
PDF::API2::Basic::TTF::Font::read

Trimmed uniglyph.txt

Total Elapsed Time = 5.336135 Seconds
  User+System Time = 5.282135 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 8.39   0.443  0.443  96795   0.0000 0.0000  
PDF::API2::Basic::TTF::Table::read
 7.33   0.387  0.730   9238   0.0000 0.0001  
PDF::API2::Basic::TTF::Loca::read
 6.68   0.353  0.551  21040   0.0000 0.0000  
PDF::API2::Basic::TTF::Hmtx::_read
 6.23   0.329  0.329      3   0.1097 0.1097  main::parseHtml
 4.90   0.259  0.374  35204   0.0000 0.0000  
PDF::API2::Basic::TTF::Maxp::read
 4.75   0.251  0.888     44   0.0057 0.0202  PDF::API2::BEGIN
 4.47   0.236  1.337  21040   0.0000 0.0001  
PDF::API2::Basic::TTF::Hmtx::read
 4.15   0.219  0.219  66057   0.0000 0.0000  
PDF::API2::Resource::BaseFont::dat
                                             a
 4.09   0.216  0.232    219   0.0010 0.0011  Exporter::import
 3.56   0.188  0.251  21056   0.0000 0.0000  
PDF::API2::Basic::TTF::Hhea::read
 3.10   0.164  1.175      6   0.0274 0.1958  
PDF::API2::Resource::CIDFont::True
                                             Type::FontFile::new
 2.57   0.136  0.136  48792   0.0000 0.0000  
PDF::API2::Resource::CIDFont::True
                                             Type::FontFile::data
 2.56   0.135  0.135   4689   0.0000 0.0000  
PDF::API2::Basic::TTF::Glyph::new
 2.52   0.133  1.020   4646   0.0000 0.0002  
PDF::API2::Resource::CIDFont::True
                                             
Type::FontFile::subsetByCId
 2.27   0.120  0.966    825   0.0001 0.0012  
PDF::API2::Resource::CIDFont::text
                                             _cid

Interesting thing. Without trimming the file, PDF::API2::Util::BEGIN 
takes 9.2% of the time in the execution, after trimming the file 
there is no entry for it. But, the execution time goes up a 1/2 
second?

Bill H