From owner-freebsd-fs@FreeBSD.ORG Sun Jul 6 08:13:30 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E612F411; Sun, 6 Jul 2014 08:13:30 +0000 (UTC) Received: from mail-qg0-x229.google.com (mail-qg0-x229.google.com [IPv6:2607:f8b0:400d:c04::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 92ABE2BE9; Sun, 6 Jul 2014 08:13:30 +0000 (UTC) Received: by mail-qg0-f41.google.com with SMTP id i50so2744364qgf.28 for ; Sun, 06 Jul 2014 01:13:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=K5iTvwa+3zCE5oHL/S4zIpnC5KWzIh97gFWGEn+Q9ac=; b=jRNWPIucZfLjp9Xsu1hnpUVtzHY8/pkahxDrQDccWmoMJ6Zgvw9BKpfKJGCJO7r85J 8qOhEtMcLz/K74RF4cIZXu9WWkqzT+62Hru8xasSpLANA4h6lP90c3iF02t63V6M1aZG pgVnGi0FDzEmPm71Pm8bOxM/G6ccrvPHKEp9Kkilzzq+aX6vAjRNwGaXgJfYWhFNqDEn drYsfK6Py7FN116lF0d6LTk+FhQckCNpAvaGMszMXf//Rijoipu1srwSxC5/pAWIW6aJ EKYIvB7AA4NcpFiPuKC7RKyjsyecamA31uTfmDq7mF1nCZo+mNfLAwzgRULkAgVbAdon lGCQ== MIME-Version: 1.0 X-Received: by 10.224.128.133 with SMTP id k5mr18930843qas.49.1404634409695; Sun, 06 Jul 2014 01:13:29 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.202.193 with HTTP; Sun, 6 Jul 2014 01:13:29 -0700 (PDT) In-Reply-To: <20140706071735.GZ93733@kib.kiev.ua> References: <53B691EA.3070108@citrix.com> <53B69C73.7090806@citrix.com> <20140705001938.54a3873dd698080d93d840e2@systemdatarecorder.org> <53B7C616.1000702@citrix.com> <20140705095831.GO93733@kib.kiev.ua> <53B7D4DF.40301@citrix.com> <20140705112448.GQ93733@kib.kiev.ua> <53B8253F.5060403@citrix.com> <20140705195816.GV93733@kib.kiev.ua> <20140706071735.GZ93733@kib.kiev.ua> Date: Sun, 6 Jul 2014 01:13:29 -0700 X-Google-Sender-Auth: ya7N-p4PK2sVEfrz4TgWB0iDjoo Message-ID: Subject: Re: Strange IO performance with UFS From: Adrian Chadd To: Konstantin Belousov Content-Type: text/plain; charset=UTF-8 Cc: freebsd-fs@freebsd.org, Stefan Parvu , FreeBSD Hackers X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 08:13:31 -0000 On 6 July 2014 00:17, Konstantin Belousov wrote: > On Sat, Jul 05, 2014 at 05:34:48PM -0700, Adrian Chadd wrote: >> Hm, wait a sec. So if the IO size is a multiple of the underlying FS >> block size, it should be okay? > It was already suggested in the thread, and confirmed later. > Did you read the mails ? I did, I must've missed it. SOrry! -a