X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:subject:mime-version:content-type :content-transfer-encoding:date:from:in-reply-to:references :message-id; q=dns; s=default; b=UiR8O2XgV4QHkgKs1RT+mjqKr4lVttq RTX5LUQ40tZsuKvUWpsM+Qu0H07SjC6x1Zu/CzA/NDBxoqVQU/VRhqdmIQYSB84s 67Lkin+HePa+MLCBHdcYFAPLTZ2RFXYQ0jNC9NqYQ0bn3sgGTn0gq1RtFvTg9qGn MtTYsU+uAHXU= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:subject:mime-version:content-type :content-transfer-encoding:date:from:in-reply-to:references :message-id; s=default; bh=MeM9RggHGCXpHM7tvIey3ovjMfk=; b=YUtRq smwWEuGFalZkzZNkeDpErkY1frtWvHcZjFdU94QPSlxMOjVSVv3L2heGmhWqfU9/ cQijJPLuW4xAAJKSXbCGkFsu+8smBbHnKQM2Oy9hB3uwhNm26KoxWRezdwHCnhbo Y80l+WHL6cAT8mXdL7gsAPItoxamqy/YUVc9uo= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.8 required=5.0 tests=AWL,BAYES_00,FROM_STARTS_WITH_NUMS,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=inflate, datum, HContent-Transfer-Encoding:8bit X-HELO: smtp-out-so.shaw.ca X-Authority-Analysis: v=2.2 cv=e552ceh/ c=1 sm=1 tr=0 a=95A0EdhkF1LMGt25d7h1IQ==:117 a=95A0EdhkF1LMGt25d7h1IQ==:17 a=IkcTkHD0fZMA:10 a=SMorJkV_YP8A:10 a=02M-m0pO-4AA:10 a=NWXstJJV1e_peEOzr7AA:9 a=QEXdDO2ut3YA:10 To: cygwin AT cygwin DOT com Subject: Re: a few tar.xz packages are bigger than their uncompressed tar X-PHP-Originating-Script: 501:rcmail.php MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Thu, 05 Oct 2017 11:56:23 -0700 From: Kaz Kylheku <920-082-4242 AT kylheku DOT com> In-Reply-To: References: Message-ID: <960ca9df83cf80f4321a69f2d8b8c0ba@mail.kylheku.com> X-Sender: 920-082-4242 AT kylheku DOT com User-Agent: Roundcube Webmail/0.9.2 X-CMAE-Envelope: MS4wfLghwbH3I1/j5ZXXCfG+Eq84KbhfIzhhrblBBS2hDSy1XTeZNQTRkn4S9qejQEYgW9CzWzBKq7zZ+bCozZ6Eu2h0vbE56vCUlHT57+AJLHeNf+WJRVWo txjN+h2bhBik1aKDNJ6Ggi20+JILuMoW9fm/xqbA3MfQwFu139KF9v/5 X-IsSubscribed: yes On 24.09.2017 11:46, Jérôme Bouat wrote: > Hello, > > I looked into the local folder where the downloaded packages are saved > before they are installed. I noticed that a few compressed archives > files are using more size than their uncompressed form. For example, > the libstdc++6-6.4.0-1.tar.xz file uses more space than its > uncompressed tar file (on cygwin x86_64). > > That is not surprising. All compression methods may sometimes inflate > the final amount of data. No compression method need ever increase the size of the datum by more than one bit. The compressed representation can begin with a header bit which is 1 to indicate "compressed" and 0 to indicate "stored without compression". -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple