From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ihor Radchenko Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] Re: Bignum performance (was: Shrinking the C core) Date: Mon, 14 Aug 2023 07:04:32 +0000 Message-ID: <87bkfartof.fsf@localhost> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29545"; mail-complaints-to="usenet@ciao.gmane.io" Cc: incal@dataswamp.org, emacs-devel To: Gerd =?utf-8?Q?M=C3=B6llmann?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Aug 14 09:05:05 2023 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qVRdQ-0007Oq-0U for ged-emacs-devel@m.gmane-mx.org; Mon, 14 Aug 2023 09:05:04 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qVRcb-0008Pa-4J; Mon, 14 Aug 2023 03:04:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qVRcZ-0008Ot-6n for emacs-devel@gnu.org; Mon, 14 Aug 2023 03:04:11 -0400 Original-Received: from mout01.posteo.de ([185.67.36.65]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qVRcX-0006Og-H8 for emacs-devel@gnu.org; Mon, 14 Aug 2023 03:04:10 -0400 Original-Received: from submission (posteo.de [185.67.36.169]) by mout01.posteo.de (Postfix) with ESMTPS id 71A09240028 for ; Mon, 14 Aug 2023 09:04:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1691996647; bh=pGHzPU1CPjvnf3phqIwkF+a/OBgxfeZv5TTYl8zJZmk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:From; b=Cbo3lM5pwjV4TjauUStvfvGcvHIV2DaoD7IIRtNpw/TiM/OwnjbhyXuQ8HHGfdyqa utMJQMcctuDpo3zwO5NLllvJ6oYP5n4C5qiw/1JRDgo1hTwnKJc/YPLRFxiU8vRlMM /GRmuRhqjQCEn9JUgTDq18oisvGbQZJZKHHZ6LPLhh7YW7tThDbaBACPXPeQKRmKOD GCOJo8JqnO/oRCMWAUaL5WBxFLini8uh6KoeGvROObmrVTT8R5mK7zziOTJcyCNU92 EpdehpP96M/BtrD6WjaqIcyfGBX06dbm4RU+aMhPXNK8AW58gUw4OId0q1f6AjImeY EU7jyRG6OXdVA== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4RPQP24Zdzz9rxD; Mon, 14 Aug 2023 09:04:06 +0200 (CEST) In-Reply-To: Received-SPF: pass client-ip=185.67.36.65; envelope-from=yantar92@posteo.net; helo=mout01.posteo.de X-Spam_score_int: -53 X-Spam_score: -5.4 X-Spam_bar: ----- X-Spam_report: (-5.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:308701 Archived-At: Gerd M=C3=B6llmann writes: >> Just for the record, SBCL/CMUCL don't use GMP. > > Hm, thinking of this - did someone measure how much time is spent in=20 > malloc/realloc/free in the benchmarks? That is what GMP uses, and SBCL=20 > 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 --=20 Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at