Mark H Weaver <[email protected]> writes: > Mark H Weaver <[email protected]> writes: > >> FYI, for those who use Emacs shell mode (M-x shell), I wanted to give a >> heads-up about a severe performance regression in Linux-libre 5.10.20, >> and I suspect the same regression exists in 5.11.3. >> >> For details, see the bug report I submitted to the Emacs developers, >> here: <https://bugs.gnu.org/46978>. > > I've since confirmed that reverting the two upstream commits mentioned > in <https://bugs.gnu.org/46978> fixes the performance regression. I've > attached a preliminary patch for Guix that reverts those upstream > commits for [email protected], and which I've tested on my system. > > I guess that the same fix is also needed for [email protected], but I've > not checked. I'll leave it to others to try applying the same reverts > to 5.11.3 if they wish, and to decide what (if anything) should be done > in Guix about this issue.
Ah, thanks so much for investigating this Mark! I only got as far as asking around on #emacs. I can confirm that 5.11.3 is affected, and that reverting to 5.10.19 avoids the issue. I haven't tried your patch yet.
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