Re: indirect threading for bytecode interpreter

[David Kastrup <dak@gnu.org>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> I've profiled (using oprofile) Emacs running this a few times;
>> typical results show mark_object at 10-12% of runtime.  It is
>> probably pretty easy to reproduce this with a variety of elisp
>> programs.
>
> So no matter how hard we try, we won't gain more than about 10%
> speed-up trying to optimize the GC.  Doesn't sound like a great
> motivator.

The 10% occur in bursts of unresponsiveness.  If such a burst is halved
in size, the total runtime improvement will not be impressive, but the
responsiveness gets quite better.

-- 
David Kastrup