Re: [Caml-list] Faster byte code

[Gabriel Scherer <gabriel.scherer@gmail.com>]

I believe the change that was described is the now-merged

  GPR#226: Compiling the run-time system at higher levels of C optimization
  https://github.com/ocaml/ocaml/pull/226

From the experiments reported by Xavier, I have the impression that
most gains are about the way the C compiler optimizes the bytecode
dispatch loop, so these would be specific to running bytecode-compiled
programs. Native programs should also benefit by linking to a
better-optimized runtime system, but no noticeable gains have been
observed on these so far -- probably because a lot of the runtime code
is memory-access-bound and harder to optimize.

Note that we don't have much performance numbers for now, so extra
data points are welcome: if you have a program spending a noticeable
time in specific parts of the runtime system, you might see a gain.

On Sun, Sep 20, 2015 at 12:06 AM, Andy Ray <andy.ray@ujamjar.com> wrote:
> Hi,
>
> Xavier; you mentioned during the state of ocaml 2015 talk that there
> was a 30% faster bytecode runtime coming.  Is there any more
> information on this?  I found this part of the talk difficult to
> follow on youtube.
>
> I am mainly interested if there will be a change in the bytecode
> runtime, or if it is related to the compiler.
>
> Regards,
> Andy
>
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