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Re: Why is Emacs so slow when used remotely?

From: mgrojo
Subject: Re: Why is Emacs so slow when used remotely?
Date: Fri, 15 Nov 2013 07:47:42 -0800 (PST)
User-agent: G2/1.0

El martes, 21 de septiembre de 2010 03:40:53 UTC+2,  
> "Russ P." writes:
> > As I explained a few days ago, I am trying to switch from XEmacs to
> > Emacs so I can use Ensime (an Emacs-based IDE for Scala). I finally
> > got my .emacs file debugged, but now I am finding that Emacs seems to
> > be very slow when used remotely.
> >
> > When I work from home, I login from one Linux machine to another using
> > ssh -X over a high-speed Internet connection, using my home machine as
> > an X terminal for my work machine. I am using Emacs 23.2.1 on Red Hat.
> > I am finding that opening a file or switching buffers by middle-
> > clicking in dired or the buffer menu takes approximately 20-30
> > seconds. With XEmacs it takes less than one second. I hope I am doing
> > something wrong that can be corrected, because I'll grow old sitting
> > around that long every time I open a file or switch buffers. Any
> > suggestions? Thanks.
> Did you file a bug report?
> Emacs seems a little over-active in dired-mode.
> I'm running at least one emacs remotely too.
> Just hovering over a name in dired causes a packet storm.
> My first guess was that it was tooltip-mode so I toggled that
> off.
> Dired is still doing something during hover though
> in the mode line it tries to tell me which button to push.
> Each time it does that, I get a mini-packet storm.
> (I can see my packet monitor graph move up.)
> Maybe someone knows how to kill over active help in Dired?

I was having the same problem using this version:
GNU Emacs 23.1.1 (x86_64-redhat-linux-gnu, GTK+ Version 2.18.9)
after recompiling with the latest version, the problem was still present:
GNU Emacs 24.3.4 (x86_64-unknown-linux-gnu, GTK+ Version 2.18.9)

I have worked around it by setting mouse-highlight to nil. So it guess that it 
is a problem with the mouse highlighting and ssh -X.

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