From owner-freebsd-hackers@FreeBSD.ORG Sun Dec 9 04:04:41 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 188D7B61 for ; Sun, 9 Dec 2012 04:04:41 +0000 (UTC) (envelope-from kabaev@gmail.com) Received: from mail-vc0-f182.google.com (mail-vc0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id B61438FC16 for ; Sun, 9 Dec 2012 04:04:40 +0000 (UTC) Received: by mail-vc0-f182.google.com with SMTP id fo14so2017518vcb.13 for ; Sat, 08 Dec 2012 20:04:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type; bh=UU46dKdHC1T3oL1/oK9rZgyE+aJrh5MaMpimA5aVDu4=; b=uKCAx0dOmcHB29fF3T1Ua7XZiIKFvu+cZEJcvOo+bYRPY9E7ykhypLyQ5iHMFkQAFB VfvhVrK19dk3ZG81W9Z51NpvpIv0q2ihe308LiiFt30toQKK+mcMDx1fAH/96X+xWQgX F6WbHqod9d1+QRKBOyjjDKnV1gZI9MAxcywEobLKIg6JEIRvMsPbVSkDCxUntZcW0AdN xRUcVBDNBJAI9jfkSndBW8QN6ob8dm644i3ozpqamm+4JBK7iTjjJRveiMv6mwPIjyGP xkTG9s0UI7Ou4nlGYSbhjc2UhpeXQKn3VzRs7pKHrdlxtEsQg/a+Hu2ShwLz2mVfyxO4 oI3A== Received: by 10.52.35.20 with SMTP id d20mr5792855vdj.50.1355025880254; Sat, 08 Dec 2012 20:04:40 -0800 (PST) Received: from kan.dyndns.org (c-24-63-226-98.hsd1.ma.comcast.net. [24.63.226.98]) by mx.google.com with ESMTPS id x17sm1711454vdi.1.2012.12.08.20.04.38 (version=SSLv3 cipher=OTHER); Sat, 08 Dec 2012 20:04:39 -0800 (PST) Date: Sat, 8 Dec 2012 23:04:33 -0500 From: Alexander Kabaev To: "Ronald F. Guilmette" Subject: Re: FreeBSD for serious performance? (was: Re: 9.x -- New Install -- serious partition misalignment) Message-ID: <20121208230433.2c54f44a@kan.dyndns.org> In-Reply-To: <1830.1355025154@tristatelogic.com> References: <20121209014547.238070@gmx.com> <1830.1355025154@tristatelogic.com> X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.6; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/fPOp/Lv6L2AbPx+pizu/K++"; protocol="application/pgp-signature" Cc: freebsd-hackers@freebsd.org X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Dec 2012 04:04:41 -0000 --Sig_/fPOp/Lv6L2AbPx+pizu/K++ Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sat, 08 Dec 2012 19:52:34 -0800 "Ronald F. Guilmette" wrote: "analysis" skipped. >=20 > As regards to the Native Command Queuing.... all I can say is "Crap!" > I wasn't aware...until now... that FreeBSD did not support that. That > really is a rather entirely serious issue. But I do think that the > performance hit from that would be dwarfed by the performance hit that > could be caused by the AF misaligment problem. >=20 ada0 at ahcich1 bus 0 scbus2 target 0 lun 0 ada0: ATA-8 SATA 2.x device ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada0: Command Queueing enabled ada0: 715404MB (1465149168 512 byte sectors: 16H 63S/T 16383C) ada0: Previously was known as ad0 ada1 at ahcich3 bus 0 scbus4 target 0 lun 0 ada1: ATA-8 SATA 2.x device ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada1: Command Queueing enabled ada1: 715404MB (1465149168 512 byte sectors: 16H 63S/T 16383C) Crap! I must be dreaming then. --=20 Alexander Kabaev --Sig_/fPOp/Lv6L2AbPx+pizu/K++ Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iD8DBQFQxA3WQ6z1jMm+XZYRAseaAKDPlHKCrzVgKx/UbDTwwg7g5cajWACfYiXf 0YQzgKzM9RPluTHpUHWZooo= =/66g -----END PGP SIGNATURE----- --Sig_/fPOp/Lv6L2AbPx+pizu/K++--