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Re: Low redisplay performance (23 regression)

From: Stefan Monnier
Subject: Re: Low redisplay performance (23 regression)
Date: Thu, 30 Apr 2009 16:00:42 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.92 (gnu/linux)

> The second case seems to slow down everything a little bit. Although I
> wouldn't vouch for the results as they're only based on 1 sample. But
> has there been work on the byte-compiler?

Yes, the byte-compiler has been changed slightly (some broken optimizations
have been fixed, mostly), so that can explain the little difference.
But still Emacs-23 with Emacs-22's font-lock.elc still takes 3.9s for
font-lock-fontify-keywords-region compared to 2.2s under Emacs-22.
So some of the underlying primitives have slowed down significantly.
Could you show the value of font-lock-keywords in that buffer?


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