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Re: Lexical binding doesn't seem to be faster?
From: |
Stefan Monnier |
Subject: |
Re: Lexical binding doesn't seem to be faster? |
Date: |
Mon, 11 Mar 2019 15:26:49 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
> So, it turned out to be a bug in linux 4.20.5 and earlier, so I
> updated to 5.0, and everything is fine now.
Hmm... still at 4.18 here, so no wonder I wasn't seeing this problem.
> I re-run tests, benchmark results now are tiny bit better for lexical
> scope when GC is on, and are the same when GC is off:
>
> With GC:
> t: (8.451301031000002 87 1.5439787770000004), (8.492936438 85
> 1.527223621)
> nil: (8.654444538 87 1.5810563760000003), (8.549887916 85
> 1.5612690489999996)
>
> No GC:
> t: (7.548030708 0 0.0) (7.591869120999999 0 0.0)
> nil: (7.519884027 0 0.0) (7.577961806 0 0.0)
Hmm... looks like the difference might be statistically insignificant
after all (or maybe lexical-binding makes cc-engine.el marginally
faster, so it hides the slight slowdown in cc-mode.el). I think you
might decide to drop this investigation, at least until you find more
clear evidence of a slowdown.
Stefan
> On Mon, 11 Mar 2019 at 00:22, Hi-Angel <hiangel999@gmail.com> wrote:
>>
>> done https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34809
>>
>> On Sun, 10 Mar 2019 at 23:48, Stefan Monnier <monnier@iro.umontreal.ca>
>> wrote:
>> >
>> > > Do you want me to open a report for above?
>> >
>> > Yes, please: this is definitely not right.
>> >
>> >
>> > Stefan
- Re: Lexical binding doesn't seem to be faster?, (continued)
- Re: Lexical binding doesn't seem to be faster?, Stefan Monnier, 2019/03/09
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Stefan Monnier, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Stefan Monnier, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Stefan Monnier, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/10
- Re: Lexical binding doesn't seem to be faster?, Hi-Angel, 2019/03/11
- Re: Lexical binding doesn't seem to be faster?,
Stefan Monnier <=