On 12/2/2020 10:40 AM, Stephen Gaito wrote:
Many thanks for your swift and helpful comments.
After some *very crude* tests using the `luametatex` and `luametafun`
documents, I find that while I *can* stop effective processing at
various points in the LuaMetaTeX pipeline, the time difference overall
is not really significant enough to bother with this approach.
The principle problem is, as you suggested below, "stopping" the
pipeline at the PDF stage (using for example the `pre_output_filter`)
corrupted the `*.tuc` data which is for my purposes, critical.
Your comment was:
but keep in mind that multipass data is flushed as part of the
shipout (because it is often location and order bound)
For the record, using the `append_to_vlist_filter` callback, I did
manage to drastically reduce the "pages" (which were all blank, not
surprisingly).
However, on my elderly desktop from 2008, both callbacks essentially cut
only 6-8 seconds out of 18 seconds, for the `luametatex` document, and
190 seconds, for the `luametafun` document.
hm, on my 2013 laptop the luametatex manual needs 10 sec (i have all the
fonts, so that includes a bunch) and a metafun manual should do about 20
a test on am M1 mini needs half those times as reported yesterday
i bet that on a modern desktop the luatex manual will do < 5 sec
In the case of the `luametafun` document, it is the MetaFun/MetaPost
processing which, of course, is taking a long time (as it should, the
graphics computations represent important but complex computations).
One run or many due to xref? Maybe your machine has no significant cpu
cache? Do you run from disk or ssd? How much memory?
My ultimate goal is to parallelize the production of large, heavily
cross-referenced, ConTeXt documents... more on this in a future email...
Hans
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Hans Hagen | PRAGMA ADE
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