From owner-freebsd-questions@FreeBSD.ORG Sat Jun 5 11:17:57 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 48D5B106566B; Sat, 5 Jun 2010 11:17:57 +0000 (UTC) (envelope-from wooh@wooh.hu) Received: from mail.netidea.hu (netwarehouse.netidea.hu [195.228.254.126]) by mx1.freebsd.org (Postfix) with ESMTP id 00BC48FC16; Sat, 5 Jun 2010 11:17:56 +0000 (UTC) Received: from radon (localhost [127.0.0.1]) by mail.netidea.hu (Postfix) with ESMTP id 463A5129293; Sat, 5 Jun 2010 13:17:24 +0200 (CEST) X-Virus-Scanned: amavisd-new at netidea.hu Received: from mail.netidea.hu ([127.0.0.1]) by radon (mail.netidea.hu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5KpeR6XT2xRC; Sat, 5 Jun 2010 13:17:23 +0200 (CEST) Received: from jamms-MacBook.local (catv-89-134-206-111.catv.broadband.hu [89.134.206.111]) by mail.netidea.hu (Postfix) with ESMTP id 71A7F12925C; Sat, 5 Jun 2010 13:17:23 +0200 (CEST) Message-ID: <4C0A3262.8010507@wooh.hu> Date: Sat, 05 Jun 2010 13:17:54 +0200 From: Adam PAPAI User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: freebsd-hackers@freebsd.org, freebsd-questions@freebsd.org References: <4C09932B.6040808@wooh.hu> <201006050236.17697.bruce@cran.org.uk> <20100605120405.00007954@unknown> In-Reply-To: <20100605120405.00007954@unknown> X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Cc: Subject: Re: sysbench / fileio - Linux vs. FreeBSD X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jun 2010 11:17:57 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 6/5/10 1:04 PM, Bruce Cran wrote: > On Sat, 5 Jun 2010 12:50:15 +0200 > Stefan Miklosovic wrote: > >>> /var : ufs with softupdates >>> /usr/obj : zfs with checksums disabled >>> /usr/src : zfs with compression enabled >>> /home : zfs with compression disabled and checksums enabled >>> >>> I ran a test with a blocksize of 8KB and 16 threads. >>> >>> /var : 25.2MB/s >>> /usr/obj : 64.8MB/s >>> /usr/src : 386.3MB/s >>> /home : 60.3MB/s >> >> Do I understand it well? It seems that zfs with compression enabled on >> /usr/src with 8KB block size and 16 threads performs 386.3MB/s which >> is about 6 times better than debian5? I am thinking about this image >> http://tech-blog.wooh.hu/~wooh/debian_vs_freebsd_io_16_seqwr.png > > Yes - on one run it even hit 500MB/s. I suspect, however, that the > benchmark isn't accurate because it won't be writing typical data. > Instead it's probably using a buffer that compresses very well. Hm.. My ZFS tests showed me the same results. With compression it's pretty fast. An application benchmark will give us typical data write, so I'll run PgSQL benchmarks on the ZFS pool as well. - -- Adam PAPAI NETIDEA Informatikai Szolgáltató Kft. http://www.netidea.hu E-mail: wooh@wooh.hu Phone: +36 30 33-55-735 (Hungary) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJMCjJiAAoJEGq0EWvh5uiIKFMH/1dP4OZGAMiBNSoRqGFfnZ5B /vtf5do2t3JRbjfYi2HyNn8gXss4xRDPouVmftl2OglIXA77hMIyIcjyoWnHGTBc M1WnnNDz1wIb8EYSl9MYKAjQA1wGsYd4UImd1MqOtZfSuOht6hTLoSiAnC1xMLtk 9vgFUtMok8XclPqL08J/dWs39+HwhSaooRnLEx7IYLSgFis7vQtJjOaWWG3LUADw QsivcCSjBBoQ7LD9WXN5prmlwt+CMBU/F1yyMaJXa0bNI7AM+hh5Mix03P4HAKEz 4Z92lcmLXzSVnllA0tAJvAwEPtk4laP6yzM9egStDNvxONLueQVLXfY8gvukQ2k= =MVI2 -----END PGP SIGNATURE-----