From unknown Sat Aug 16 23:46:25 2025 X-Loop: help-debbugs@gnu.org Subject: bug#21693: [PATCH] doc: remove obsolete performance comment Resent-From: Paul Eggert Original-Sender: "Debbugs-submit" Resent-CC: bug-coreutils@gnu.org Resent-Date: Fri, 16 Oct 2015 19:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 21693 X-GNU-PR-Package: coreutils X-GNU-PR-Keywords: patch To: 21693@debbugs.gnu.org Cc: Paul Eggert X-Debbugs-Original-To: bug-coreutils@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.144502253714369 (code B ref -1); Fri, 16 Oct 2015 19:09:01 +0000 Received: (at submit) by debbugs.gnu.org; 16 Oct 2015 19:08:57 +0000 Received: from localhost ([127.0.0.1]:53606 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZnAN6-0003jh-Ma for submit@debbugs.gnu.org; Fri, 16 Oct 2015 15:08:56 -0400 Received: from eggs.gnu.org ([208.118.235.92]:37660) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZnAN3-0003jY-Na for submit@debbugs.gnu.org; Fri, 16 Oct 2015 15:08:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZnAN2-0002GT-OH for submit@debbugs.gnu.org; Fri, 16 Oct 2015 15:08:53 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=BAYES_40 autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:45493) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnAN2-0002GL-Dx for submit@debbugs.gnu.org; Fri, 16 Oct 2015 15:08:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47652) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnAN1-0001iO-G4 for bug-coreutils@gnu.org; Fri, 16 Oct 2015 15:08:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZnAMy-0002Ep-Of for bug-coreutils@gnu.org; Fri, 16 Oct 2015 15:08:51 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:35989) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnAMy-0002Ef-JB for bug-coreutils@gnu.org; Fri, 16 Oct 2015 15:08:48 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6F84D160DFA for ; Fri, 16 Oct 2015 12:08:47 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id mHV7-WpgLPeL; Fri, 16 Oct 2015 12:08:46 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id AA5EB160998; Fri, 16 Oct 2015 12:08:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 2K835ebzYvUU; Fri, 16 Oct 2015 12:08:46 -0700 (PDT) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 945EE1601BC; Fri, 16 Oct 2015 12:08:46 -0700 (PDT) From: Paul Eggert Date: Fri, 16 Oct 2015 12:08:33 -0700 Message-Id: <1445022513-19779-1-git-send-email-eggert@cs.ucla.edu> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) sha512sum can be faster than sha256sum. E.g., =E2=80=98dd if=3D/dev/zero bs=3D1024k count=3D1024 | time sha256sum= =E2=80=99 reports 8.16 user CPU seconds on my host, whereas sha512sum consumes 5.45 seconds (Fedora x86-64 on an AMD Phenom II X4 910e). Although sha512sum is still considerably slower on x86, a good chunk of uses are on 64-bit hosts and anyway there=E2=80=99s little point to scaring people away from sha512sum nowadays. * doc/coreutils.texi (sha2 utilities): Remove obsolete comment. --- doc/coreutils.texi | 3 --- 1 file changed, 3 deletions(-) diff --git a/doc/coreutils.texi b/doc/coreutils.texi index a029ec6..c988aca 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -3948,9 +3948,6 @@ these commands are precisely the same as for @comma= nd{md5sum} and @command{sha1sum}. @xref{md5sum invocation}. =20 -Note: The SHA384 and SHA512 digests are considerably slower to -compute, especially on 32-bit computers, than SHA224 or SHA256. - =20 @node Operating on sorted files @chapter Operating on sorted files --=20 2.1.0 From debbugs-submit-bounces@debbugs.gnu.org Fri Oct 16 15:12:34 2015 Received: (at control) by debbugs.gnu.org; 16 Oct 2015 19:12:34 +0000 Received: from localhost ([127.0.0.1]:53611 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZnAQc-0003oz-AI for submit@debbugs.gnu.org; Fri, 16 Oct 2015 15:12:34 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:34831) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZnAQa-0003or-1E for control@debbugs.gnu.org; Fri, 16 Oct 2015 15:12:32 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 82C0C1601BC for ; Fri, 16 Oct 2015 12:12:31 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id azaC-rIj62f0 for ; Fri, 16 Oct 2015 12:12:30 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id DE83E160998 for ; Fri, 16 Oct 2015 12:12:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id hFHm1wy-T5C7 for ; Fri, 16 Oct 2015 12:12:30 -0700 (PDT) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id C8CB51601BC for ; Fri, 16 Oct 2015 12:12:30 -0700 (PDT) To: control@debbugs.gnu.org From: Paul Eggert Subject: 21693 is done Organization: UCLA Computer Science Department Message-ID: <56214C1E.7050506@cs.ucla.edu> Date: Fri, 16 Oct 2015 12:12:30 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) close 21693