Re: [Emacs-diffs] comment-cache 223d16f 2/3: Apply `comment-depth' text properties when calling `back_comment'.

[Alan Mackenzie]

Hello, Martin.

On Sun, Mar 13, 2016 at 01:08:24PM +0100, martin rudalics wrote:
>  > OK.  I've just updated both emacs-25 and master, and built them normally
>  > (i.e. with default optimisation and no debugging info).  The timings I
>  > see (in seconds) are:

>  >              emacs-25          master
>  > foo          2.62              2.78
>  > bar         13.64             13.93

>  > I honestly don't know why you're seeing a factor of 20 difference.

> Probably because I build with debug information.  With optimized builds
> I get more or less the same figures as you do.

>  > I
>  > doubt it's got anything to do with CC Mode.  Perhaps you could tell me
>  > what flags (e.g. CFLAGS) you're using in your non-optimised builds,

> CFLAGS='-O0 -g3' --with-wide-int --enable-checking=yes 
> --enable-check-lisp-object-type=yes

>  > and
>  > I can rebuild and try again.

> Please do that.

                 emacs-25          master
foo               23.25             24.70
bar              146.73            153.38

And just in case the problem might be with elp,

                 emacs-25          master
foofoo            22.69             24.07
foobar           146.98            152.33

I don't know what more I can do at this end.  A factor of 20 takes a lot
of explaining.  Just for the record, I've been running on Linux virtual
terminals.

> martin

-- 
Alan Mackenzie (Nuremberg, Germany).