From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: rrandresf@gmail.com Newsgroups: gmane.emacs.devel Subject: Re: emacs rendering comparisson between emacs23 and emacs26.3 Date: Thu, 26 Mar 2020 20:38:22 +0000 Message-ID: <86d08y4zsx.fsf@gmail.com> References: <86tv2h2vww.fsf@gmail.com> <20200322123818.GB32470@ACM> <87eetk5swm.fsf@gnu.org> <20200326193128.GC14092@ACM> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="54116"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Richard Stallman , emacs-devel@gnu.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Mar 26 21:39:00 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jHZHH-000Dxi-Q8 for ged-emacs-devel@m.gmane-mx.org; Thu, 26 Mar 2020 21:38:59 +0100 Original-Received: from localhost ([::1]:60088 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHZHG-0001jE-Ti for ged-emacs-devel@m.gmane-mx.org; Thu, 26 Mar 2020 16:38:58 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38072) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHZGo-0001Eu-R6 for emacs-devel@gnu.org; Thu, 26 Mar 2020 16:38:31 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jHZGn-0003vx-JX for emacs-devel@gnu.org; Thu, 26 Mar 2020 16:38:30 -0400 Original-Received: from mail-qt1-x830.google.com ([2607:f8b0:4864:20::830]:43217) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jHZGn-0003vX-Dq; Thu, 26 Mar 2020 16:38:29 -0400 Original-Received: by mail-qt1-x830.google.com with SMTP id a5so6710386qtw.10; Thu, 26 Mar 2020 13:38:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:in-reply-to:references:date:message-id :mime-version:content-transfer-encoding; bh=mU63ApWYQg3gboZuiRJxg7DTPFa6cH0s4r7EHwPCXMA=; b=Er3xmtVdx3iW9UgLCJ8QlHUtmGjgdKVjM/IGSh7UJTuw17CMnrH89R2ivXCU+d4kIx O5Jde5N9p11wnJrROFzF8hv2VsUTWIko8fRf0QLXoExZEX+3fFw0PTUUcmgqCt42d++f wz6YY9rdxulhkJllp/sePf3vt2iN3u0vny0yipjQZWFOx/DIA9Dlq4rnMiTqXzBhvyow bENCTHnbLwXZk6JHkyPRqjdEkIbRk7bmP2B0oRo+CuxLxXVHo+9DjDkCjvziD8bH0RWB Gp7lpg52xM0WZ65eK4p9MTgpM95mXnv/qRhF0n02wJt0VmSih2zmUbuhKci1OqeOnE9H 4P8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version:content-transfer-encoding; bh=mU63ApWYQg3gboZuiRJxg7DTPFa6cH0s4r7EHwPCXMA=; b=rgKdCbE3u5zflBBpzmzIvot1l8/CbCPQ6SIt1NTlTUwoH6Yc/Prb4Vp3s0h5UEVmHn oWaPLPx1sgapOKHx5/p4whIUWRw4iw6AOqIus+O+PiYgPtFk0sInbvwBCJfGZMmqLMZ7 mIfVtNYx4lV6ZIxUihzGgAHQq8RcjDx1diCt1ol4heqlOILS63XOGdlFO/VMfWWSpqqb YQdvME6fgbHsK3fz7KMPHJ40L6MMHIhIjNZhKAwwKo3khIIEIckVRdn6RXYIquz/yPwx pIT7M/mbdHAjz/tihL3j8A11WVkJKFPt95jMhnLc4fIFP/5rU7gTyLpNmq9iuQuRqu9Z zmAw== X-Gm-Message-State: ANhLgQ0apB6fmXSZk2Nx8RQhsmzENqbVWjluKe+NxmzObAYIMBFYSMoY 3y7Mf+uoTsBJ1sNkjofiTCR+Ux/k X-Google-Smtp-Source: ADFU+vu6JIELy8EhRpwj/M8ylQRyZpydFIK9KV9+zsGjhB9RQeKNrLnmUZFSypU0eIGNDOvaZAZhAw== X-Received: by 2002:ac8:72da:: with SMTP id o26mr10742387qtp.261.1585255108077; Thu, 26 Mar 2020 13:38:28 -0700 (PDT) Original-Received: from sacsa.n800.arm.processor.yandex.fm ([190.236.255.22]) by smtp.gmail.com with ESMTPSA id m1sm2324060qtk.16.2020.03.26.13.38.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2020 13:38:27 -0700 (PDT) In-Reply-To: <20200326193128.GC14092@ACM> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::830 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." 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:245821 Archived-At: Hi Alan. Hi. Richard. >> contain the "Management Engine" back door and can't start up >> without it. Alan> That's a good point. Presumably processors without these back Alan> doors are difficult to come by nowadays. >> Is it possible, to restore most of the lost peformance by >> deactivating some new features? Alan> The only way at the moment (for CC Mode) is to change Alan> font-lock-maximum-decoration from t to 2. BTW. On my comparissons that variable was set no nil as Doc says: --8<---------------cut here---------------start------------->8--- If nil, use the default decoration (typically the minimum available). --8<---------------cut here---------------end--------------->8--- Also xdisp.c. Just load c-mode not c++-mode Alan> Most of the increased processing comes from fixing bugs rather Alan> than adding new features. Keeping up with, in particular, the Alan> latest C++ standard (which seems to appear every three years) is Alan> a challenge, as they steadily make shallow syntactic analysis Alan> more and more difficult. I have complete the same test on all Emacsen (Sxemacs-git and Xemacs 21.5). Nothing beats GNU/Emacs23 on rendering. As Eli pointed out on another email on this same thread. It could be BIDI. I would need to check on configure If it is possible to deactivate BIDI support and see what difference it Does. With the help of Michael Albinus I have update the emacs23 builtin tramp version to the latest one that supports GNU/Emacs23 (wellcome multihops and adb). I think perhaps in the future I could upgrade org-mode to the last version that supports GNU/Emacs23 (=C2=BF?). And I am going to stay with th= at setup on low power machines. BTW. Not having magit on GNU/Emacs23 have made me discover the niceties about vc-dir (sometimes it hangs on GNU/Emacs23) not on 26.3. Also on the same subject. There are several packages that require GNU/Emacs24 as minimum but they DO work fine with GNU/Emacs23. Yes I Do use GNU/Emacs23 with package.el. and GNU/Emacs23 coexist with GNU/Emacs26.3 Also GNU/Emacs23. with all the patches from Gentoo (thanks Ulrich Mueller). compiles fine with latest and greatest tooling {glibc 2.30} on x8= 6 (32 and 64 bits). But does not compile on ARM (a low power machine like orange pi). It stays on a loop. I have no hav= e the time for attaching gdb to it. But I plan on doing it sometime in the future. So for ARM architecture= just CANNOT_DUMP works with a lot of tweaking for compilation (Do not try it). Best Regards