Here is the graph you wanted. I built Emacs at 500 points, from 2018 to today, on an up-to-date and unloaded Debian bookworm computer, and took the average wall clock time of 10 builds with "make -j20". The build times are in general constant. The few commits that change the build time significantly, figured by breaks of the red line in the graph, are: 97b7e58c4d improvement from 86s to 78s (9%) Stefan Monnier Try and fix the more obvious sources of bug#30635 d12e5d003d deterioration from 78s to 95s (22%) Daniel Colascione Add portable dumper .......... gradual deterioration from 95s to 108s (14%) from January 2019 to February 2021 a350ae058c deterioration from 108s to 129s (19%) Stefan Monnier * lisp/emacs-lisp/cconv.el: Improve line-nb info of unused var warnings fddd63f8b8 and b3d310fa96 deterioration from 129s to 140s (9%) Glenn Morris Distribute the real source for some doc/misc manuals (bug#45143) ff09851a1f improvement from 140s to 130s (9%) Stefan Monnier * lisp/emacs-lisp/macroexp.el: Rewrite the code warning about '(lambda ...) 1362a9fec4 improvement from 130s to 119s (8%) Mattias Engdegård Make lambda-lifting work again .......... gradual deterioration from 119s to 126s (6%) from March 2021 to January 2022 fd31ef21c5 deterioration from 126s to 132s (5%) Alan Mackenzie Don't use 'load-read-function' in byte-compile-from-buffer f687e62ac5 deterioration from 132s to 145s (10%) Alan Mackenzie Fix symbols with position appearing in the output of 'compile-defun' 6092ee1c3f improvement from 145s to 130s (10%) Alan Mackenzie Amend byte-run-strip-symbol-positions so that an unexec build builds 68cdb95019 deterioration from 130s to 136s (5%) Alan Mackenzie Restore call to byte-run-strip-symbol-positions in byte-compile-out 1d4e903417 improvement from 136s to 109s (20%) Lars Ingebrigtsen Speed up generation of loaddefs files 3e312d11ce improvement from 109s to 83s (24%) Lars Ingebrigtsen Reshuffle the generation of the OKURO-NASI entries to speed up build 73a384a986 improvement from 83s to 60s (28%) Lars Ingebrigtsen Increase gc-cons-percentage in -batch Emacs Congrats for 1d4e903417, 3e312d11ce and 73a384a986!