Using fontspec (which requires exp3-code.tex) makes lualatex slow











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I recently tried luatex (TeX Live on Mac) and found that if I use fontspec to load a font, it really slows down the compilation. My test document:



documentclass{article}

% usepackage{fontspec}
% setmainfont{ProximaNova}[
% Path=fonts/,
% UprightFont=*-Regular,
% ItalicFont=*-RegularIt,
% BoldFont=*-Bold,
% BoldItalicFont=*-BoldIt]

begin{document}
Hello World.
end{document}


If I keep the font section commented out, it takes 0.7 seconds to generate the PDF. If I uncomment the font section, it takes 2.7 seconds. That's almost 4x.



A huge chunk of this 2 sec increase seems to be processing expl3-code.tex which someone else complained about also.



Can this file be pre-compiled or something else to make it load faster?










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  • As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
    – Joseph Wright
    Nov 18 at 15:50










  • The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
    – Ulrike Fischer
    Nov 18 at 16:02










  • @DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
    – Roxy
    Nov 18 at 16:05










  • @Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
    – Joseph Wright
    Nov 18 at 16:07















up vote
0
down vote

favorite












I recently tried luatex (TeX Live on Mac) and found that if I use fontspec to load a font, it really slows down the compilation. My test document:



documentclass{article}

% usepackage{fontspec}
% setmainfont{ProximaNova}[
% Path=fonts/,
% UprightFont=*-Regular,
% ItalicFont=*-RegularIt,
% BoldFont=*-Bold,
% BoldItalicFont=*-BoldIt]

begin{document}
Hello World.
end{document}


If I keep the font section commented out, it takes 0.7 seconds to generate the PDF. If I uncomment the font section, it takes 2.7 seconds. That's almost 4x.



A huge chunk of this 2 sec increase seems to be processing expl3-code.tex which someone else complained about also.



Can this file be pre-compiled or something else to make it load faster?










share|improve this question







New contributor




Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
    – Joseph Wright
    Nov 18 at 15:50










  • The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
    – Ulrike Fischer
    Nov 18 at 16:02










  • @DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
    – Roxy
    Nov 18 at 16:05










  • @Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
    – Joseph Wright
    Nov 18 at 16:07













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I recently tried luatex (TeX Live on Mac) and found that if I use fontspec to load a font, it really slows down the compilation. My test document:



documentclass{article}

% usepackage{fontspec}
% setmainfont{ProximaNova}[
% Path=fonts/,
% UprightFont=*-Regular,
% ItalicFont=*-RegularIt,
% BoldFont=*-Bold,
% BoldItalicFont=*-BoldIt]

begin{document}
Hello World.
end{document}


If I keep the font section commented out, it takes 0.7 seconds to generate the PDF. If I uncomment the font section, it takes 2.7 seconds. That's almost 4x.



A huge chunk of this 2 sec increase seems to be processing expl3-code.tex which someone else complained about also.



Can this file be pre-compiled or something else to make it load faster?










share|improve this question







New contributor




Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I recently tried luatex (TeX Live on Mac) and found that if I use fontspec to load a font, it really slows down the compilation. My test document:



documentclass{article}

% usepackage{fontspec}
% setmainfont{ProximaNova}[
% Path=fonts/,
% UprightFont=*-Regular,
% ItalicFont=*-RegularIt,
% BoldFont=*-Bold,
% BoldItalicFont=*-BoldIt]

begin{document}
Hello World.
end{document}


If I keep the font section commented out, it takes 0.7 seconds to generate the PDF. If I uncomment the font section, it takes 2.7 seconds. That's almost 4x.



A huge chunk of this 2 sec increase seems to be processing expl3-code.tex which someone else complained about also.



Can this file be pre-compiled or something else to make it load faster?







luatex fontspec






share|improve this question







New contributor




Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






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asked Nov 18 at 15:43









Roxy

2353




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Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Roxy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
    – Joseph Wright
    Nov 18 at 15:50










  • The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
    – Ulrike Fischer
    Nov 18 at 16:02










  • @DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
    – Roxy
    Nov 18 at 16:05










  • @Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
    – Joseph Wright
    Nov 18 at 16:07


















  • As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
    – Joseph Wright
    Nov 18 at 15:50










  • The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
    – Ulrike Fischer
    Nov 18 at 16:02










  • @DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
    – Roxy
    Nov 18 at 16:05










  • @Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
    – Joseph Wright
    Nov 18 at 16:07
















As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
– Joseph Wright
Nov 18 at 15:50




As the question you link to notes, expl3 is quite large, but on most systems the load time is pretty trivial (certainly less than a second). Other than building stuff into the format file there's not much that can be done to load material faster.
– Joseph Wright
Nov 18 at 15:50












The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
– Ulrike Fischer
Nov 18 at 16:02




The complain about expl3 in the other question was a bug in miktex which has been resolved in the meantime. lualatex is slower than pdflatex - loading rather large fonts needs more time.
– Ulrike Fischer
Nov 18 at 16:02












@DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
– Roxy
Nov 18 at 16:05




@DavidCarlisle With usepackage{expl3} it takes 2.2 seconds, which is 80% of the time increase.
– Roxy
Nov 18 at 16:05












@Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
– Joseph Wright
Nov 18 at 16:07




@Roxy Sure, but from a very low base. With LuaTeX, we have a load of Unicode data needed that's not in pdfTeX (where the load time is really low). It's very hard to cut that down, as I said unless we went down the route of building expl3 directly into the LaTeX kernel. That has been discussed, but there are issues with doing that globally ...
– Joseph Wright
Nov 18 at 16:07















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