Re: How to debug high CPU usage -> hang

[Ken Goldman]

On 1/10/2023 10:21 AM, Eli Zaretskii wrote:
> > From: Ken Goldman <kgoldman@us.ibm.com>
> > Date: Tue, 10 Jan 2023 09:58:58 -0500
> >
> > I'm editing in ReST mode, Windows 11, emacs 28.1.
> >
> > Occasionally, I want to jump (search, etc.) and the CPU usage jumps and
> > emacs hangs. I suspect a font-lock issue.
> >
> > I fixed one by bisecting the text, then changing a table type.  Now I
> > have another.
> >
> > Is there a general way to debug?
>
> I can suggest profiling and/or attaching a debugger.

Attaching a debugger to the lisp major mode, or building emacs from
source?