From owner-freebsd-security@FreeBSD.ORG Tue Sep 11 22:49:08 2012 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 02836106564A; Tue, 11 Sep 2012 22:49:08 +0000 (UTC) (envelope-from arthurmesh@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id AFCBF8FC16; Tue, 11 Sep 2012 22:49:07 +0000 (UTC) Received: by pbbrp2 with SMTP id rp2so1583160pbb.13 for ; Tue, 11 Sep 2012 15:49:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=GwSOhj5pwn6zfn3C/BUsoR3CNBN3xgXrw7zHomTQXdU=; b=KIHHLm4/J0RZzDRlczctpVoVvZuX7yiMrYvhyVeMT7rlNvoZtAGG27uAgY12yuaOJ/ Q9C5cqogycWcfT5S1osunk3PPHRoPkEn/BBD1spKQgsdZgn26BgYOSPFBcHYXpOe/vjF eoCZDAeKC6rAmjvCDkH8Onkq3ulaj7OAHRoDMQB+GFX064+SfudqNetGXMYcJurob8sB 53RudFUScLp/EB3SnDyeJ5/VVbHHPawb8IW6ieVpLGFH89OJo6nLQPv6a3S/rFHtqwDc HBsbDmojQBnL4G7Jok+tOruf65mx/Fr5bhxDzRxHRNNxuzd0sFiZpR/oNVD0PjEyRS2X UNYg== Received: by 10.68.236.67 with SMTP id us3mr13219775pbc.80.1347403741382; Tue, 11 Sep 2012 15:49:01 -0700 (PDT) Received: from x96.org (x96.org. [64.85.165.177]) by mx.google.com with ESMTPS id oc2sm10433724pbb.69.2012.09.11.15.48.58 (version=SSLv3 cipher=OTHER); Tue, 11 Sep 2012 15:48:59 -0700 (PDT) Date: Tue, 11 Sep 2012 15:48:55 -0700 From: Arthur Mesh To: d@delphij.net Message-ID: <20120911224855.GE14077@x96.org> References: <20120911061530.GA77399@dragon.NUXI.org> <504EDC67.9070700@FreeBSD.org> <86sjao7q8c.fsf@ds4.des.no> <20120911205302.27484fd6@gumby.homeunix.com> <20120911200925.GA88456@dragon.NUXI.org> <504FA76A.5000209@delphij.net> <20120911211730.GB89188@dragon.NUXI.org> <504FAB87.3020701@delphij.net> <20120911215212.GA89515@dragon.NUXI.org> <504FBD15.8040907@delphij.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <504FBD15.8040907@delphij.net> User-Agent: Mutt/1.5.21 (2010-09-15) X-Mailman-Approved-At: Wed, 12 Sep 2012 01:03:06 +0000 Cc: Arthur Mesh , Doug Barton , freebsd-rc@freebsd.org, freebsd-security@freebsd.org, RW , Dag-Erling ??? Subject: Re: svn commit: r239569 - head/etc/rc.d X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Sep 2012 22:49:08 -0000 On Tue, Sep 11, 2012 at 03:37:09PM -0700, Xin Li wrote: > Using gzip is better than not using it though, since 4k worth of > compressed data is better than 4k worth of plain text because of > higher entropy destiny (note that the FreeBSD gzip uses 64K of > input/output buffer for compression by the way so maybe only the first > 64K is meaningful if we take only 4k of output). Since there is 1:1 correspondence between compressed and uncompressed data, entropy should be the same in both. I am not sure it's better to use compression than not -- you do end up seeding fewer bytes to yarrow, but you spend more CPU cycles compressing it...