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Re: font-lock has become far too slow

From: Kim F. Storm
Subject: Re: font-lock has become far too slow
Date: 29 Apr 2004 01:07:28 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50

John Wiegley <address@hidden> writes:

> John Wiegley <address@hidden> writes:
> > Starting very recently, font-lock (using jit-lock) has become so
> > slow that Emacs can no longer keep up with my typing -- on a modern,
> > 1.25 GHz PowerBook G4.  I haven't profiled things yet, so does
> > anyone know what was added that might make things this slow?  I
> > compiled with -O3 -fomit-frame-pointer, but still am forced to turn
> > off font-lock mode.
> It looks like it's more than just font-lock.  With font-lock off, if I
> hold down C-p to move up in the buffer, drawing new pages takes up to
> a full second (subjective).  And typing past the end of a line has a
> hard time keeping up with my typing.  Even typing this message is very
> laggy.  I will have to do some profiling to see what it going on.
> Nothing in my configuration has changed very drastically since
> February, when things were working quite nicely.

I just installed a fix for a problem causing excessive redisplay.

Please see if this problem has been fixed as well.

Kim F. Storm <address@hidden> http://www.cua.dk

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