From owner-freebsd-current@FreeBSD.ORG Tue Dec 1 15:38:27 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 21469106568D for ; Tue, 1 Dec 2009 15:38:27 +0000 (UTC) (envelope-from matheusber@gmail.com) Received: from mail-yw0-f204.google.com (mail-yw0-f204.google.com [209.85.211.204]) by mx1.freebsd.org (Postfix) with ESMTP id C994C8FC1E for ; Tue, 1 Dec 2009 15:38:26 +0000 (UTC) Received: by ywh42 with SMTP id 42so4398610ywh.28 for ; Tue, 01 Dec 2009 07:38:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:received:date:from:to :subject:message-id:in-reply-to:references:x-mailer:mime-version :content-type:content-transfer-encoding; bh=5FGyPvkh2nXw3psyw58jxfkV889rSk9RcLs06vZRUKU=; b=P50pkl2qJBizpsiGxNxUi9nA00JyW0Jju2nOJF6+rOiM4W+xXpebioE8youssTArq5 5GvbcO9gwKcpOMZyItaU0rmlzQeRwtPKj52hUAfdxPiA2LOdMvQFBQywRSU5lAz8Dzef 1/6ydtbt7xtmHd/tG9Je2Ztz+nE7TAXEVDkHs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:date:from:to:subject:message-id:in-reply-to:references :x-mailer:mime-version:content-type:content-transfer-encoding; b=J2r6VTACImyjtXP3dvNP/m3Wxb2TG03YSVo1mPln8310WmdwBlXtLT8s4xKCT+m4G8 bhX5LScJHobJBW2qa80wgSv+5FChPD5/DXIZ5nvR+lgs3zSWzCRIjho2kX3DxxbYxrf4 C9oEm4yecsB44MATd6pg3SaNg3bAN2CfIfNbk= Received: by 10.101.156.1 with SMTP id i1mr2417493ano.66.1259681905083; Tue, 01 Dec 2009 07:38:25 -0800 (PST) Received: from cygnus.homeunix.com ([189.71.5.3]) by mx.google.com with ESMTPS id 22sm91105yxe.3.2009.12.01.07.38.23 (version=TLSv1/SSLv3 cipher=RC4-MD5); Tue, 01 Dec 2009 07:38:24 -0800 (PST) Sender: Nenhum_de_Nos Received: from arroway.apartnet (arroway.apartnet [10.1.1.80]) by cygnus.homeunix.com (Postfix) with SMTP id 68F48B808E for ; Tue, 1 Dec 2009 12:38:18 -0300 (BRT) Date: Tue, 1 Dec 2009 12:38:41 -0300 From: Nenhum_de_Nos To: freebsd-current@freebsd.org Message-Id: <20091201123841.0dee277f.matheus@eternamente.info> In-Reply-To: <4B153498.8050601@FreeBSD.org> References: <1259583785.00188655.1259572802@10.7.7.3> <1259659388.00189017.1259647802@10.7.7.3> <4B153498.8050601@FreeBSD.org> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.9; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: FreeBSD 8.0 Performance (at Phoronix) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Dec 2009 15:38:27 -0000 On Tue, 01 Dec 2009 17:22:00 +0200 Alexander Motin wrote: > Alexander Motin wrote: > > Threaded I/O activity could get much benefit from NCQ-aware disk driver. > > It is not included in default FreeBSD kernel, but it would be nice to > > compare. > > To check possible NCQ effect, I've built test setup with new 320GB > 7200RPM Seagate drive connected to Intel ICH10R controller. I've run > IMHO more reasonable benchmark/raidtest tool from ports on whole device, > to execute pregenerated random mix of 10000 random-sized (512B - 128KB) > read/write requests using default ata(4) driver and new ahci(4): > Number of READ requests: 5029. > Number of WRITE requests: 4971. > Number of bytes to transmit: 655986688. > Number of processes: 32. > > The results: > ata(4) - no NCQ: > Bytes per second: 12455402 > Requests per second: 189 > ahci(4) - with NCQ: > Bytes per second: 19889778 > Requests per second: 303 > > Results are repeatable up to the 4-th digit. Average time per request is > 5.29ms and 3.3ms respectively, that seems realistic for this drive. Alexander, to make use of all this new stuff I need to run HEAD ? as former HEAD was born recently as 8.0R and the new stuff in it is big compared to 7.x, I'd like to use it from RELENG_8. is this possible ? my hardware would be NVIDIA nForce 680i SLI motherboard and Seagate ES.2 disks. thanks, matheus -- We will call you Cygnus, The God of balance you shall be A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? http://en.wikipedia.org/wiki/Posting_style