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From: Ihor Radchenko <yantar92@posteo.net>
To: "Gerd Möllmann" <gerd.moellmann@gmail.com>
Cc: incal@dataswamp.org, emacs-devel <emacs-devel@gnu.org>
Subject: Re: [PATCH] Re: Bignum performance (was: Shrinking the C core)
Date: Mon, 14 Aug 2023 07:04:32 +0000	[thread overview]
Message-ID: <87bkfartof.fsf@localhost> (raw)
In-Reply-To: <ac3dc265-965d-049f-bf88-ecd3c2896bac@gmail.com>

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

>> Just for the record, SBCL/CMUCL don't use GMP.
>
> Hm, thinking of this - did someone measure how much time is spent in 
> malloc/realloc/free in the benchmarks?  That is what GMP uses, and SBCL 
> doesn't.

https://yhetil.org/emacs-devel/87bkfdsmde.fsf@localhost/

We can further get rid of the GC by temporarily disabling it (just for
demonstration):

(let ((beg (float-time)))
  (setq gc-cons-threshold most-positive-fixnum)
  (fib 10000 1000)
  (message "%.3f s" (- (float-time) beg)) )

perf record  ~/Git/emacs/src/emacs -Q -batch -l /tmp/fib.eln
0.739 s

    17.11%  emacs    libgmp.so.10.5.0      [.] __gmpz_sizeinbase
     7.35%  emacs    libgmp.so.10.5.0      [.] __gmpz_add
     6.51%  emacs    emacs                 [.] arith_driver
     6.03%  emacs    libc.so.6             [.] malloc
     5.57%  emacs    emacs                 [.] allocate_vectorlike
     5.20%  emacs    [unknown]             [k] 0xffffffffaae01857
     4.16%  emacs    libgmp.so.10.5.0      [.] __gmpn_add_n_coreisbr
     3.72%  emacs    emacs                 [.] check_number_coerce_marker
     3.35%  emacs    fib.eln               [.] F666962_fib_0
     3.29%  emacs    emacs                 [.] allocate_pseudovector
     2.30%  emacs    emacs                 [.] Flss
-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>



  reply	other threads:[~2023-08-14  7:04 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-14  6:28 [PATCH] Re: Bignum performance (was: Shrinking the C core) Gerd Möllmann
2023-08-14  6:56 ` Gerd Möllmann
2023-08-14  7:04   ` Ihor Radchenko [this message]
2023-08-14  7:35     ` Gerd Möllmann
2023-08-14  8:09       ` Ihor Radchenko
2023-08-14  9:28         ` Gerd Möllmann
2023-08-14  9:42           ` Ihor Radchenko
2023-08-15 14:03             ` Emanuel Berg
2023-08-15 15:01               ` Ihor Radchenko
2023-08-15 22:21                 ` Emanuel Berg
2023-08-15 22:33                 ` Emanuel Berg
2023-08-16  4:36                   ` tomas
2023-08-16  5:23                     ` Emanuel Berg
2023-08-14 16:51           ` Emanuel Berg
2023-08-15  4:58             ` Gerd Möllmann
2023-08-15 14:20               ` Emanuel Berg
2023-08-15  6:26             ` [PATCH] Re: Bignum performance Po Lu
2023-08-15 14:33               ` Emanuel Berg
2023-08-15 17:07                 ` tomas
2023-08-15 22:46                   ` Emanuel Berg
2023-08-16  1:31                 ` Po Lu
2023-08-16  1:37                   ` Emanuel Berg
2023-08-16  3:17                     ` Po Lu
2023-08-16  4:44                       ` tomas
2023-08-16  5:18                       ` Gerd Möllmann
2023-08-16  5:35                         ` Emanuel Berg
2023-08-18  7:14                           ` Simon Leinen
2023-08-19 13:10                             ` Emanuel Berg
2023-08-20  5:07                               ` Ihor Radchenko
2023-08-20  6:20                                 ` Emanuel Berg
2023-08-28  5:32                                 ` Emanuel Berg
2023-09-03  0:48                                   ` Emanuel Berg
2023-09-03  8:50                                     ` Ihor Radchenko
2023-09-03  9:05                                       ` Emanuel Berg
2023-09-03 10:30                                         ` Elisp native-comp vs. SBCL for inclist-type-hints benchmark (was: [PATCH] Re: Bignum performance) Ihor Radchenko
2023-09-04  1:03                                           ` Emanuel Berg
2023-09-03  1:57                                   ` [PATCH] Re: Bignum performance Emanuel Berg
2023-09-04  4:13                             ` Emanuel Berg
2023-08-16  5:41                         ` Gerd Möllmann
2023-08-16  6:42                         ` Po Lu
2023-08-16  8:05                           ` Gerd Möllmann
  -- strict thread matches above, loose matches on Subject: below --
2023-08-09  9:46 Shrinking the C core Eric S. Raymond
2023-08-09 12:34 ` Po Lu
2023-08-09 15:51   ` Eric S. Raymond
2023-08-09 23:56     ` Po Lu
2023-08-10  1:19       ` Eric S. Raymond
2023-08-10  7:44         ` Eli Zaretskii
2023-08-10 21:54           ` Emanuel Berg
2023-08-11 10:27             ` Bignum performance (was: Shrinking the C core) Ihor Radchenko
2023-08-11 12:10               ` Emanuel Berg
2023-08-11 12:32                 ` Ihor Radchenko
2023-08-11 12:38                   ` Emanuel Berg
2023-08-11 14:07                     ` [PATCH] " Ihor Radchenko
2023-08-11 18:06                       ` Emanuel Berg
2023-08-11 19:41                         ` Ihor Radchenko
2023-08-11 19:50                           ` Emanuel Berg
2023-08-12  8:24                             ` Ihor Radchenko
2023-08-12 16:03                               ` Emanuel Berg
2023-08-13  9:09                                 ` Ihor Radchenko
2023-08-13  9:49                                   ` Emanuel Berg
2023-08-13 10:21                                     ` Ihor Radchenko
2023-08-14  2:20                                       ` Emanuel Berg
2023-08-14  7:20                                         ` Ihor Radchenko
2023-08-11 22:46                           ` Emanuel Berg
2023-08-12  8:30                             ` Ihor Radchenko
2023-08-12 16:22                               ` Emanuel Berg
2023-08-13  9:12                                 ` Ihor Radchenko

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