From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.help Subject: Re: Fixxed buffer size for eshell Date: Sun, 30 Apr 2017 22:21:03 +0300 Message-ID: <83vaplk8gw.fsf@gnu.org> References: <20170430100252.ibyfpqkgibupjddh@gmail.com> <83fugqkmbk.fsf@gnu.org> <20170430183746.uyr7ayi4wxnnpe5h@gmail.com> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1493580120 17920 195.159.176.226 (30 Apr 2017 19:22:00 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 30 Apr 2017 19:22:00 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Apr 30 21:21:53 2017 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d4uPo-0004VT-18 for geh-help-gnu-emacs@m.gmane.org; Sun, 30 Apr 2017 21:21:52 +0200 Original-Received: from localhost ([::1]:45678 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d4uPt-0007xQ-MR for geh-help-gnu-emacs@m.gmane.org; Sun, 30 Apr 2017 15:21:57 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54756) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d4uPW-0007xA-1d for help-gnu-emacs@gnu.org; Sun, 30 Apr 2017 15:21:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d4uPS-0005by-UU for help-gnu-emacs@gnu.org; Sun, 30 Apr 2017 15:21:34 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:49263) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d4uPS-0005bu-Qy for help-gnu-emacs@gnu.org; Sun, 30 Apr 2017 15:21:30 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2633 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1d4uPS-0000rs-5Z for help-gnu-emacs@gnu.org; Sun, 30 Apr 2017 15:21:30 -0400 In-reply-to: <20170430183746.uyr7ayi4wxnnpe5h@gmail.com> (message from Anast Gramm on Sun, 30 Apr 2017 21:37:46 +0300) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:112910 Archived-At: > Date: Sun, 30 Apr 2017 21:37:46 +0300 > From: Anast Gramm > Cc: help-gnu-emacs@gnu.org > > On Sun, Apr 30, 2017 at 05:21:51PM +0300, Eli Zaretskii wrote: > > > Date: Sun, 30 Apr 2017 13:02:52 +0300 > > > From: Anast Gramm > > > > > > When I run a build command eshell gets filled with thousands of lines > > > with the compiler commands. > > > > > > This results in a huge buffer (>10mb) thus slowing down emacs. > > > > Large buffers shouldn't slow down Emacs. They don't here. And 10MB > > is not large by today's standards anyway. > Actually it's 10mb for every time I run the afformentioned commands, > so it gets big fast. OK, but that's still not large. When you get around 1GB, that will be large. > > Can you show a recipe for reproducing the problem? > An example is when I print the contents of a binary file using > a C++ program, and that file is big, eshell buffer gets ~50000 lines > at that point stuff moves slower for a while. All I can say is that I cannot reproduce this here. I've ran this command $ od prog where prog is a 13MB executable program. That filled the Eshell buffer with 190,000 lines, and I still didn't see any slowdown. Not sure why you do see Emacs getting slower (I tried C-b and C-p). Is this similar to what you do in your case?