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bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' a
From: |
Stephen Berman |
Subject: |
bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays. |
Date: |
Fri, 01 Mar 2024 15:35:09 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
On Fri, 01 Mar 2024 09:07:54 -0500 Andrea Corallo <acorallo@gnu.org> wrote:
> Stephen Berman <stephen.berman@gmx.net> writes:
>
>> On Fri, 01 Mar 2024 15:41:24 +0200 Eli Zaretskii <eliz@gnu.org> wrote:
>>
[...]
>>> My suggestion was to compare profiles in the byte-compiled and
>>> native-compiled cases.
>>>
>>> Btw, are you running both cases in the same session? If so, don't:
>>> restart Emacs and run the other case instead.
>>
>> Ok, I've now done that. Here's the report for the run with native
>> compilation:
>>
>> 12599 95% - command-execute
>> 12487 95% - funcall-interactively
>> 12486 95% - eval-expression
>> 12485 95% - #<compiled -0x5db3e1955cb81d1>
>> 12485 95% - #<compiled -0x8a5cf032951a0fe>
>> 12480 95% - eval
>> 12480 95% - progn
>> 12367 94% - benchmark-call
>> 12367 94% - #<lambda 0x8c97b8cb7bd82>
>> 12367 94% build-sieve
>> 113 0% - emacs-lisp-native-compile-and-load
>> 113 0% - emacs-lisp-native-compile
>> 113 0% - native-compile
>
> IIUC this is profiling the native compilation itself.
>
> BTW I'd suggest the profile is done with perf (and running batch).
I don't have perf installed, but I build the kernel from source, so I
guess I could build and install perf, but...
> Given you see on your machine similar times for native and byte compiled
> the expected outcome should be tha tthe time is spent in some C routine
> of our core.
If you consider ~12.7 (native-compiled) and ~9.6 (byte-compiled),
similar for this benchmark, and since Eli said it's expected that
native-compiled elisp can be slower than byte-compiled elisp for some
programs, then I guess I can just accept that for this case, the
difference between my timings is within a reasonable margin of error and
not due to some problem with my libgccjit (which I also built and
installed myself).
Steve Berman
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Andrea Corallo, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Andrea Corallo, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays.,
Stephen Berman <=
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Andrea Corallo, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Stephen Berman, 2024/03/01
- bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01
bug#69480: Emacs Lisp needs, for its great 'native-compile', 'declare' and 'the' for fixnums and arrays., Eli Zaretskii, 2024/03/01