From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.devel Subject: Re: The Emacs master is much slower than the emacs-27 branch. 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:260347 Archived-At: > I don't know what happens on your computer (what is your platform/compiler?) but on mine (Debian GNU/Linux with the latest Linux kernel and the latest GCC) the effect on -O0 is almost the same as on -Og for this particular benchmark. I just tried again on the emacs-27 branch: > > -Og: ~67s > -O0: ~63s > -O1: ~26s > -O2: ~18s > -O3: ~17s So when I want to compare Emacs 27 and Emacs 28 benchmarks, -Og builds are off limits. Now can I use O0 builds or do I have to use O1-O3 builds exclusively? martin