From owner-freebsd-fs@FreeBSD.ORG Thu Jul 4 20:36:50 2013 Return-Path: Delivered-To: freebsd-fs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 6C1B2C08; Thu, 4 Jul 2013 20:36:50 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from anubis.delphij.net (anubis.delphij.net [IPv6:2001:470:1:117::25]) by mx1.freebsd.org (Postfix) with ESMTP id 461AD1D9B; Thu, 4 Jul 2013 20:36:50 +0000 (UTC) Received: from delphij-macbook.local (c-67-188-85-47.hsd1.ca.comcast.net [67.188.85.47]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by anubis.delphij.net (Postfix) with ESMTPSA id 0CEBA9897; Thu, 4 Jul 2013 13:36:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=delphij.net; s=anubis; t=1372970209; bh=pz1QjjsZvvahfcmdN2qvXIjtvM85bzropJ1k+WNrlgw=; h=Date:From:Reply-To:To:CC:Subject:References:In-Reply-To; b=iMK6lJYsXSK5BUbcQBRRW3rC/4AkZElroawrlyQR9P+IOxMi5cWvhE7X3Uthz6M1S QLf/azlDklAeiwdHq58aHmarhjlJMKnhFUqynbGpEIy+X3bKfNfJw/MtB/8o5aVmai LmAuua66cUPpYUw+pu4OlzNDuNEwp3ZZQ8BaEH04= Message-ID: <51D5DCDF.2030503@delphij.net> Date: Thu, 04 Jul 2013 13:36:47 -0700 From: Xin Li Organization: The FreeBSD Project MIME-Version: 1.0 To: Volodymyr Kostyrko Subject: Re: ZFS default compression algo for contemporary FreeBSD versions References: <51D576E1.6030803@gmail.com> <51D59B6C.5030600@gmail.com> <51D59C88.9060403@FreeBSD.org> <51D5DAB9.4070507@gmail.com> In-Reply-To: <51D5DAB9.4070507@gmail.com> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@FreeBSD.org, Dmitry Morozovsky , Andriy Gapon X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: d@delphij.net List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Jul 2013 20:36:50 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 7/4/13 1:27 PM, Volodymyr Kostyrko wrote: > 04.07.2013 19:02, Andriy Gapon wrote: >> on 04/07/2013 18:57 Volodymyr Kostyrko said the following: >>> Yes. Much better in terms of speed. >> >> And compression too. > > Can't really say. > > When the code first appeared in stable I moved two of my machines > (desktops) to LZ4 recreating each dataset. To my surprise gain at > transition from lzjb was fairly minimal and sometimes LZ4 even > loses to lzjb in compression size. However better > compression/decompression speed and moreover earlier takeoff when > data is incompressible clearly makes lz4 a winner. I'm interested in this -- what's the nature of data on that dataset (e.g. plain text? binaries? images?) Cheers, -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJR1dzfAAoJEG80Jeu8UPuz84AIAMp8BT/a/H4tX1AzytmHxf5o zVC7yj59BnfmkgdeKbo49fIiEafg2FHRXNsGGQ/3TvMliDqmNPvTmJQwDApH9Efl oysm/OVcSy7ZtiT/3M2AQqNyzaIB90pidGYwO6oqZ7gwtMi6FJuiwZHsBMiHU92c F6tieTICIWKj8cF60oWBP+kx8oM4cTfdOt1S2SGfcaBySQdmw3B7Yxg7pLHoUZ1+ 6zcaoqFgSEIS8Svnk6pdOCRREUTcAKmE1W7SbEJEgeTbJ7TaCMt64yZoyQqeyayl KBo9v8/9mYwz89L1ljHoYAXInBMUQxqIiHPvN/H1QFSZomERaLjFSYDYaIbMGeQ= =6Zmf -----END PGP SIGNATURE-----