Re: Emacs cvs (23) uses too much CPU with compilation mode

[daviddisco <zenbulogy@gmail.com>]

On May 8, 9:39 pm, Felipe Magno de Almeida
<felipe.m.alme...@gmail.com> wrote:
> On Thu, Apr 16, 2009 at 6:28 PM, Felipe Magno de Almeida
>
>
>
> <felipe.m.alme...@gmail.com> wrote:
> > Hi,
>
> > I can see emacs uses 80% of CPU of a 600Mhz Celeron for about 2
> > minutes after it gets the compiler error output.
> > The compiler only runs for less than 15 seconds.
> > It happens only when the error message is a bit big. ( > 50Kb).
> > It is instantaneous with emacs-22.3. I don't have to wait at all.
> > I'm using multi-tty, but I can reproduce it without server-start. I
> > also use CEDET, but
> > the behavior is the same without it.
> > Sometimes the error message is *much bigger*. And that makes it
> > unbearable to wait.
> > Is this behavior known? Is it considered a bug? Is there anything I
> > can do (aside from not using compilation
> > mode, or using emacs v22.3)?
>
> > Both emacs (emacs-23 and emacs-22.3 are compiled for console and used
> > through ssh).
>
> ping?
>
> > --
> > Felipe Magno de Almeida
>
> --
> Felipe Magno de Almeida

Check the value of compilation-error-regexp-alist.  Remove any
unnecessary regular expressions.  It might help.