[NTG-context] Re: Why LuaMetaTex is so slow?

[Henning Hraban Ramm <texml@fiee.net>]

Am 18.01.24 um 18:47 schrieb Pablo Rodriguez via ntg-context:
> On 1/18/24 18:24, Shiv Shankar Dayal wrote:
>> I can process TeXBook in almost an instant using PDFTeX which is about
>> 450+ pages but my math book takes around 30 seconds averaging ~40
>> pages/second.
> 
> Hi Shiv Shankar Dayal,
> 
> I guess that “The TeXbook” (having been written by Knuth himself) may be
> optimized for speed.
> 
> Your math book may use features (I’m guessing again) that require more
> resources than the features used by “The TeXbook”.
> 
>> Why LuaMetaTeX is so slow? How can I speed it up?
> 
> https://www.pragma-ade.com/general/manuals/musings.pdf#page=96 might
> explain why Lua(Meta)TeX is slower.
> 
> Other chapters in that document from Hans might give you some insight on
> the reasons why LMTX has to pay a price for being more feature-rich. I
> got such impression when I read it.
> 
> Just in case it might help,

In comparison to LaTeX with LuaHBTeX, ConTeXt with LuaMetaTeX is 
lightning fast.

pdfTeX is 8bit, and Knuth’s plain TeX is very low level – for a fairer 
comparison, try the TeXbook on LuaMetaTeX (I don’t know if “plain” works 
though).

Hraban
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