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Re: extreme lagging

From: Kim F. Storm
Subject: Re: extreme lagging
Date: 01 Apr 2004 18:24:04 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50

Mario Domgörgen <address@hidden> writes:

> >> Starting with the cvs version from 04-01-2004 i have extreme lagging
> >> in emacs. i-search-forward need for example 0.08 seconds compared
> >> with 0.008 on my old cvs from November last year. 
> > How can you mentally differentiate 0.08 and 0.008 seconds?
> I used elp to get that results, i could used another functions as it
> happens with almost all functions...

I repeated your tests (using isearch-forward) with a version from CVS
built yesterday and stock 21.2.  I do see a slowdown of approx 25% -
33%, but I don't see anyway near the slowdown (a factor of 10) that
you reported.

On the other hand, my results for isearch-forward (search for "copyr"
in etc/NEWS) were a long way from yours:

        CVS emacs 0.00185
        21.2      0.00127

(on a 1.4 GHz centrino)

We have made some improvements to various areas of redisplay and other
things, so a slight slowdown may be expected (that may account for the
added 0.0006 seconds).

I don't find the current figures alarming, but if you could send me a
more elaborate test of a command (which takes significantly more time
than isearch-forward), and compare performance then I might be able to
look further into this.

Please start emacs -q --no-site-file and explain your test case from
there...  Also be sure to load the .elc files and compile emacs with
optimizations on.

Kim F. Storm  http://www.cua.dk

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