Re: etex and pdftex have diverging memory constraints?

> Le 27 août 2025 à 18:47, David Carlisle <[email protected]> a écrit :
> 
> 
> 
> On Wed, 27 Aug 2025 at 17:46, David Carlisle <[email protected] <mailto:[email protected]>> wrote:
>> it's main memory that you are hitting so there are several differences in the format, not least a different banner text,  You can see the memory usage in the format by looking at
>> 
>> 
> 
> /usr/local/texlive/2025/texmf-var/web2c/pdftex/etex.log
> 
> /usr/local/texlive/2025/texmf-var/web2c/pdftex/pdftex.log 

Here is the diff. It is not very large. I am sorry I don't know how to paste it here with coloring for easier reading.

--- etex.log	2025-08-27 15:37:03.000000000 +0200
+++ pdftex.log	2025-07-12 22:24:09.000000000 +0200
@@ -1,11 +1,12 @@
-This is pdfTeX, Version 3.141592653-2.6-1.40.28 (TeX Live 2025) (INITEX)  27 AUG 2025 15:37
+This is pdfTeX, Version 3.141592653-2.6-1.40.28 (TeX Live 2025) (INITEX)  12 JUL 2025 22:24
 entering extended mode
  restricted \write18 enabled.
  %&-line parsing enabled.
  (/usr/local/texlive/202x/texmf-dist/web2c/cp227.tcx)
-***etex.ini
-(/usr/local/texlive/202x/texmf-dist/tex/plain/config/etex.ini
-(/usr/local/texlive/202x/texmf-dist/tex/plain/etex/etex.src
+***pdfetex.ini
+(/usr/local/texlive/202x/texmf-dist/tex/plain/config/pdfetex.ini
+(/usr/local/texlive/202x/texmf-config/tex/generic/tex-ini-files/pdftexconfig.te
+x) (/usr/local/texlive/202x/texmf-dist/tex/plain/etex/etex.src
 (/usr/local/texlive/202x/texmf-dist/tex/plain/base/plain.tex
 Preloading the plain format: codes, registers,
 \maxdimen=\dimen10
@@ -769,12 +770,13 @@
 \forcer@cycle, \usef@llback, \usef@llbacktrue, \usef@llbackfalse, 
 Retaining: \et@xerr, \et@xinput, \et@xlibhdr, \et@xmsg, \et@xtoks, \et@xwarn,
 \et@xl@@d, \et@xl@ad, \et@xload, \et@xlang, \et@xhash, \eTeX, \etexhdrchk,
-\etexstatus, \module, \uselanguage, \r@tain, \r@cycle,) )
-Beginning to dump on file etex.fmt
- (preloaded format=etex 2025.8.27)
-5428 strings of total length 104520
-13473 memory locations dumped; current usage is 203&10344
-1709 multiletter control sequences
+\etexstatus, \module, \uselanguage, \r@tain, \r@cycle,)
+(/usr/local/texlive/202x/texmf-dist/tex/plain/config/pdftexmagfix.tex) )
+Beginning to dump on file pdftex.fmt
+ (preloaded format=pdftex 2025.7.12)
+5438 strings of total length 104949
+13473 memory locations dumped; current usage is 203&10375
+1711 multiletter control sequences
 \font\nullfont=nullfont
 \font\tenrm=cmr10
 \font\preloaded=cmr9
@@ -912,5 +914,10 @@
 0 words of pdfTeX memory
 0 indirect objects
 No pages of output.
+PDF statistics:
+ 0 PDF objects out of 1000 (max. 8388607)
+ 0 named destinations out of 1000 (max. 500000)
+ 1 words of extra memory for PDF output out of 10000 (max. 10000000)
+
 # actual command line used during this run
-# pdftex -ini   -jobname=etex -progname=etex -translate-file=cp227.tcx *etex.ini </dev/null
+# pdftex -ini   -jobname=pdftex -progname=pdftex -translate-file=cp227.tcx *pdfetex.ini </dev/null