From owner-svn-doc-head@FreeBSD.ORG Fri Jul 13 12:45:28 2012 Return-Path: Delivered-To: svn-doc-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 34DF61065672 for ; Fri, 13 Jul 2012 12:45:28 +0000 (UTC) (envelope-from isabell@issyl0.co.uk) Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by mx1.freebsd.org (Postfix) with ESMTP id AAB588FC1B for ; Fri, 13 Jul 2012 12:45:27 +0000 (UTC) Received: by wibhm11 with SMTP id hm11so456352wib.13 for ; Fri, 13 Jul 2012 05:45:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=sender:subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer :x-gm-message-state; bh=4FX0/YErMDxqfp6cU2vhfRUrmKXplrQ19ePT70WfuC4=; b=TOJt9fLvswaJs9ipexHNLw4pRiBxw+ZaRPVGUYhtNetMmjgkfjyW9XXcsAGLbigdHL l+4jyf5LsT3pHaugDOo4Me6uNag7ueopXCiHJdhMcYzIO0OqHxnKkIclPD0BP97zs3Ot HoDk6k/fjNOr7M32FktmT1vrk0gc4Duphd4R/9HFUSwKeh6Y2LjQqUo1KrYYwyh3eObf hMLehVlErkeD2ECrh/+5U6KcDSNlKKWscTnHgWAbugUhv2Rhzt6fa1wSDVRS7M2C6fIs Y7U/XVqJLWK6UzR7ulkNzExP9L0NUcvv4dQfM2WvBRM3abvztrsUmyHeILmPnsGDF/me 5O+A== Received: by 10.216.101.68 with SMTP id a46mr563095weg.120.1342183526378; Fri, 13 Jul 2012 05:45:26 -0700 (PDT) Received: from c0231.aw.cl.cam.ac.uk (c0231.aw.cl.cam.ac.uk. [128.232.100.231]) by mx.google.com with ESMTPS id el6sm3188891wib.8.2012.07.13.05.45.24 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 13 Jul 2012 05:45:25 -0700 (PDT) Sender: Isabell Long Mime-Version: 1.0 (Apple Message framework v1278) Content-Type: text/plain; charset=us-ascii From: Isabell Long In-Reply-To: <20120712150548.GK2338@deviant.kiev.zoral.com.ua> Date: Fri, 13 Jul 2012 13:45:26 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <6106A7A7-090A-4C55-91E4-7EDF994E83A8@freebsd.org> References: <201207121412.q6CECngA011553@svn.freebsd.org> <20120712150548.GK2338@deviant.kiev.zoral.com.ua> To: Konstantin Belousov X-Mailer: Apple Mail (2.1278) X-Gm-Message-State: ALoCoQnvR0MKyRPUzXgBMWYKl4/s19toZ3coNucc2Ls45mikSUX43nyrUzDk/mFKrAbEIsOw7tJ1 Cc: svn-doc-head@freebsd.org, svn-doc-all@freebsd.org, doc-committers@freebsd.org Subject: Re: svn commit: r39189 - head/en_US.ISO8859-1/books/porters-handbook X-BeenThere: svn-doc-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the doc tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jul 2012 12:45:28 -0000 Hey, On 12 Jul 2012, at 16:05, Konstantin Belousov wrote: > On Thu, Jul 12, 2012 at 02:12:49PM +0000, Isabell Long wrote: >=20 >> + A number of simple syscalls (for example >> + &man.gettimeofday.2;, &man.getpid.2;) are much faster on >> + &linux; than on any other operating system due to caching and >> + the vsyscall performance optimizations. Do not rely on them >> + being cheap in performance-critical applications. In general, >> + try hard to avoid syscalls if possible. > And this is not quite true for HEAD and soon for RELENG_9. Sorry, this came directly from a Google Code-In task done back in = November that simply asked to transfer the info wiki -> SGML, which I = did, and I don't have enough knowledge to check the current status of = the things mentioned. The task was just sat in the list, as it had been = for months, so I decided to commit it. Feel free to submit patches. :-) Isabell.=