From owner-svn-src-head@freebsd.org Mon Apr 17 01:02:54 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3884ED32E8D; Mon, 17 Apr 2017 01:02:54 +0000 (UTC) (envelope-from mahrens@gmail.com) Received: from mail-vk0-x235.google.com (mail-vk0-x235.google.com [IPv6:2607:f8b0:400c:c05::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DF60D1928; Mon, 17 Apr 2017 01:02:53 +0000 (UTC) (envelope-from mahrens@gmail.com) Received: by mail-vk0-x235.google.com with SMTP id j127so48504336vkh.0; Sun, 16 Apr 2017 18:02:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=7fU2u2jl6tWKFVZ9Easz8hsmMNOxlY9te70plXg2xLI=; b=Io6uyfsKoLAUQRO5qIygvPMB+vxH+z8XnXpN/qKn9qIfe2E7rwxgZxVTvp3HXxZM+L z0iA7dPX92e6cNgS/iXxC7ad/818lVleWi0qtakqdoZ3ii3lk0I/4uYCcF6GnuLZhIrY 8UPGNuiVCGQ7VDoK/55vUWvrOJ3en2jGGkjvK7R6G3ULBfv68ZfcoA1RVJvl7UJayD/y oS+vtyxf7hVIpemLHE8zkok6NoXO+/bw7pWHmDGX0hQqJ4AmepbnaG9o+JzzqX6NgK1/ L1+JsZAucGc91xvMV6apKDbABUEEweuoTLj6kaQD1gb1nICkXfzlZST/Clw0juJtk8cT AVkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=7fU2u2jl6tWKFVZ9Easz8hsmMNOxlY9te70plXg2xLI=; b=IShvMHoo69CHqJMd54J1pEUxoLcP8DX9bwPyELp/bZTGHJidkyifS3SywgLSBAbkNN NDZKDO9XZX5WKfu209VkVA96EuCV+10bZzW9H9mEulQr9Y+aXcd9fyH7MPSlHUhAHXtx gZDgyVl8iBBuJYj5DkIs4fxPFx8MDlstZETAj4F8EbyfjPoRDdf+0OSt5lInlie7bJAJ FfJ4gvSqIXkbsKAGr55nI0zq4bCnOs/iz4jmTYGHvfXkI2yVTNEXiu+7MaRHhZuTyfI7 cIP7MCBFV8KkeSJZQSfCf6zQE+7rRS5aLllD06Jhn44ehEtF7zmmQIeZmOKOpXfexQs7 tI2g== X-Gm-Message-State: AN3rC/7xoDc108Nt2P4uPSWvBfaA/Sa9wN59zFxjAd4Pv3Odzm/HSe/C pjrn5c0p7UgpI/ksONrC1oqfD/FnXAqws58= X-Received: by 10.31.157.130 with SMTP id g124mr7235416vke.139.1492390972384; Sun, 16 Apr 2017 18:02:52 -0700 (PDT) MIME-Version: 1.0 Sender: mahrens@gmail.com Received: by 10.176.80.18 with HTTP; Sun, 16 Apr 2017 18:02:52 -0700 (PDT) In-Reply-To: <20170416073551.557czdcksdmmuz24@ivaldir.net> References: <201704152005.v3FK5M2j002459@repo.freebsd.org> <201704152337.v3FNb2m1014053@pdx.rh.CN85.dnsmgr.net> <20170416073551.557czdcksdmmuz24@ivaldir.net> From: Matthew Ahrens Date: Sun, 16 Apr 2017 18:02:52 -0700 X-Google-Sender-Auth: 5GBv-HAU3rbcsir5bccEU2ZrCjE Message-ID: Subject: Re: svn commit: r316978 - in head: contrib/zstd etc/mtree lib lib/libzstd share/mk usr.bin usr.bin/zstd To: Baptiste Daroussin Cc: rgrimes@freebsd.org, "src-committers@freebsd.org" , svn-src-all@freebsd.org, svn-src-head@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Apr 2017 01:02:54 -0000 On Sun, Apr 16, 2017 at 12:35 AM, Baptiste Daroussin wrote: > > zstandard is the successor to lz4, That's not my understanding. zstandard is an improvement in every respect over zlib (gzip), but lz4 is faster, especially at decompression[*]. If you have data to the contrary I'd be happy to be wrong, but AFAIK, lz4 will retain its usefulness for some time, at least for ZFS. there are attempts to integrate zstandard in > ZFS, Allan Jude is working on that, That's great, I look forward to it! --matt [*] According to the zstandard github page, lz4 is 1.5x faster at compression and 3x faster at decompression. https://github.com/facebook/zstd