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Re: Emacs Slowdown

From: Eli Zaretskii
Subject: Re: Emacs Slowdown
Date: Tue, 10 Mar 2015 21:00:42 +0200

> From: address@hidden (Phillip Lord)
> Cc: <address@hidden>
> Date: Tue, 10 Mar 2015 12:37:15 +0000
> >> which is an awful lot of functions to be called on every keypress. I
> >> realise that I may have gone a bit overboard here, especially as five of
> >> those functions are mine!
> >
> > The question is: what do those hook do, on average?  If they are very
> > lightweight (profile them to see if they are), then this isn't your
> > villain.
> >
> > Also, try removing most of the hooks when you see sluggish operation,
> > and see if that brings any significant speedup; if not, these aren't
> > what you are looking for.
> Saw Stefan's post and think these are a red-herring also.

So if turning on GC messages doesn't give any hints, I'd suggest to
wait until you see a sluggish cursor movement, then start a CPU
profiler, perform several such cursor movements, produce the report,
and post that here.

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