From owner-freebsd-hackers@FreeBSD.ORG Sat May 19 18:00:57 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 D688C1065679 for ; Sat, 19 May 2012 18:00:57 +0000 (UTC) (envelope-from rozhuk.im@gmail.com) Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by mx1.freebsd.org (Postfix) with ESMTP id 53AA68FC17 for ; Sat, 19 May 2012 18:00:57 +0000 (UTC) Received: by lbon10 with SMTP id n10so3860150lbo.13 for ; Sat, 19 May 2012 11:00:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=reply-to:from:to:references:in-reply-to:subject:date:message-id :mime-version:content-type:content-transfer-encoding:x-mailer :content-language:thread-index; bh=noj9OXfQTlBSEFZTbzr6sPZv3lGdej7A70U7gWigBPQ=; b=mzrTX3Cn56h2XrL79yES2BgtCuCciR4cgepDxNNUkf+XFROi96BOdT/Mu9QvRYbls/ ZM8+HVV61AqplHR9d0CJzu7mXOUvR45S/GK0AWod6eMMZeIcmpXOTdIdmlqWfDeof+TN 94xoPeop91yvIwbcJMmJ413TOJooTjGie/d2YVPb2MGoPI9dSuvXfoolRnWT7W7AywjL btAXSyzm5aW3dRrkow9X8XA7QA+jdtj6GR55Dhb+YA8zHnc1YO7k/pwXJRJluIOBVS2U 8dlVCGUVgL2Zu9CYKHwgkqLXWJ4ErlVgAquDxCmrjqlLzCZ+VvAH4Xq6XrelPO8U+7hP K3Qg== Received: by 10.112.36.42 with SMTP id n10mr6562232lbj.7.1337450456118; Sat, 19 May 2012 11:00:56 -0700 (PDT) Received: from rimwks1w7x64 ([164.215.82.187]) by mx.google.com with ESMTPS id gt19sm17903989lab.17.2012.05.19.11.00.53 (version=SSLv3 cipher=OTHER); Sat, 19 May 2012 11:00:54 -0700 (PDT) From: rozhuk.im@gmail.com To: "'User Wojtek'" , References: In-Reply-To: Date: Sun, 20 May 2012 03:00:46 +0900 Message-ID: <4fb7dfd6.736a980a.186d.ffff902f@mx.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Content-Language: ru thread-index: Ac01MpzdVxOWxnhjQVqcRxQYTJLnwQAti7ZA Cc: Subject: RE: proper newfs options for SSD disk X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Rozhuk.IM@gmail.com List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 May 2012 18:00:57 -0000 Partition must be aligned to: # gpart show => 34 62533229 ada0 GPT (29G) 34 6 - free - (3.0k) - for align 40 512 1 freebsd-boot (256k) - size 4k aligned 552 62532648 2 freebsd-ufs (29G) - size 4k aligned 62533200 63 - free - (31k) > -----Original Message----- > From: owner-freebsd-hackers@freebsd.org [mailto:owner-freebsd- > hackers@freebsd.org] On Behalf Of User Wojtek > Sent: Saturday, May 19, 2012 5:11 AM > To: freebsd-hackers@freebsd.org > Subject: proper newfs options for SSD disk > > what are proper settings > > a) 4kB fragments so everything is 4k aligned? SSD drives itself reports > as 512 byte blocks, but it is recomenned constantly on many places > about 4K alignment for SSD. > > b) small fragments (like 1KB) to reduce space usage, as there is no > seeking so it will not slow down but save space on relatively small SSD > > c) anything else? > > > i use b) now. > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers- > unsubscribe@freebsd.org"