From owner-freebsd-fs@FreeBSD.ORG Thu Jul 4 20:44:56 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 971E4F0F; Thu, 4 Jul 2013 20:44:56 +0000 (UTC) (envelope-from c.kworr@gmail.com) Received: from mail-ea0-x235.google.com (mail-ea0-x235.google.com [IPv6:2a00:1450:4013:c01::235]) by mx1.freebsd.org (Postfix) with ESMTP id 055D91DF4; Thu, 4 Jul 2013 20:44:55 +0000 (UTC) Received: by mail-ea0-f181.google.com with SMTP id a15so1073104eae.12 for ; Thu, 04 Jul 2013 13:44:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=+sEwFB6EFkD0opZX8QQbeDALsvZPAMfBBlzsoBKid/s=; b=VcEQ8XMTTkxJdjU3V2vSbNbeBREA75woFe08GcJa/MSiplRUgZgqGM9yL1JIe1MvVw 03jhnFKCtY6gLCPsdKMAt5IhfmFuUlXQpPK8+qdwBMzpynGYT2v29VD2elysRmU4N83l g7noXnfnRWBMaPYoSPCnAXHZbYt37PeGr8iE1u7eZrBCdmn70iHpxGjePelKal//OhD+ FDaW/DEVkOWUmmZb8+XuIp1UAkifb+Faav3sjrlc26NvfrveXfwtuMssW2kjbBbELh6V oPHl3wgsXbVB/AbRBB6ZJGK/MRpTe7GFdrfXoXQhmxKP99roeJr2LKkJ7b6EtYCWs/+w DXjg== X-Received: by 10.14.203.194 with SMTP id f42mr8761491eeo.53.1372970694908; Thu, 04 Jul 2013 13:44:54 -0700 (PDT) Received: from limbo.xim.bz ([46.150.100.6]) by mx.google.com with ESMTPSA id b3sm7958963eev.10.2013.07.04.13.44.53 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 04 Jul 2013 13:44:54 -0700 (PDT) Message-ID: <51D5DEC4.2000101@gmail.com> Date: Thu, 04 Jul 2013 23:44:52 +0300 From: Volodymyr Kostyrko User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130627 Thunderbird/17.0.7 MIME-Version: 1.0 To: d@delphij.net 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> <51D5DCDF.2030503@delphij.net> In-Reply-To: <51D5DCDF.2030503@delphij.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Jul 2013 20:44:56 -0000 04.07.2013 23:36, Xin Li wrote: > -----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?) Triple no. Biggest difference in lzjb favor was at zvol with Mac OS X Snow Leo. Maybe it's just because recordsize is too small on zvols? Anyway the difference was like a 1% or 2%. Can't remember but can retest. -- Sphinx of black quartz judge my vow.