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Re: Emacs very slow, how to investigate

From: Julien Cubizolles
Subject: Re: Emacs very slow, how to investigate
Date: Mon, 06 Oct 2014 14:33:50 +0200
User-agent: Gnus/5.13001 (Ma Gnus v0.10) Emacs/25.0.50 (gnu/linux)

Dan Espen <> writes:

> Julien Cubizolles <> writes:
>> After running for a few hours, Emacs becomes sluggish, to the point that
>> it takes several seconds to move the focus from one window to the other,
>> with switch-window (keyboard or mouse). I'm running GNU Emacs
>> (x86_64-pc-linux-gnu, GTK+ Version 3.10.8), my typical workflow includes
>> latex-mode org-mode gnus helm.
>> Has anyone seen something similar ? How can I investigate ?
> Haven't seen it, but I'd start by examining how much memory and CPU
> Emacs is using.
> The command line tool "top" is good enough.
> Take memory readings just after start up then
> when things slow down.  Look for memory use creeping up.

I finally could track it down. Whenever emacs was crawling the process
hud-service was also at 100% cpu. This manages the Heads-Up-Display
feature of Ubuntu Unity. I ditched Ubuntu Unity for gnome-shell and now
Emacs doesn't freezes anymore !


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