From owner-freebsd-fs@FreeBSD.ORG Thu Nov 12 02:44:48 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 34A8C1065672 for ; Thu, 12 Nov 2009 02:44:48 +0000 (UTC) (envelope-from tamgya@gmail.com) Received: from mail-gx0-f218.google.com (mail-gx0-f218.google.com [209.85.217.218]) by mx1.freebsd.org (Postfix) with ESMTP id DAD218FC17 for ; Thu, 12 Nov 2009 02:44:47 +0000 (UTC) Received: by gxk10 with SMTP id 10so1689564gxk.3 for ; Wed, 11 Nov 2009 18:44:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:x-opensmtpd-loop:received :x-envelope-to:to:subject:mime-version:content-type:user-agent:from :organization:mail-followup-to:date:message-id; bh=j0ZSWGAv6zbi5R+ytR/shSPPXJKwrtfQdp47tcjcGPc=; b=ZqCnpfW+Gf/oQqJcNPvX3ALZrbnTyN3De4lxeoQ3vofwUYMr2FX8wTn1lMJaA2AMRb hmYn7/XJQHf7scoPkOWBeKrql9P7MLZcV6q4k2v2A5YeFzL8qkZj+iHfJWL+jkLGzJrW CeoVLXZN9xvd33E7ZbiYy/bzND0vch6Dl0f58= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=x-opensmtpd-loop:x-envelope-to:to:subject:mime-version:content-type :user-agent:from:organization:mail-followup-to:date:message-id; b=r8Z77Md58U3oMgdgwFR4PdQXGzTYWzGyAMdxh5y0nNOfQutleCH9pD19W27UKrzLMg cVAqDzwwBCdMkB/jHWhOWgWXEWeS7DI/pvgBRTU7+hDNmQpxcqIgopznN4+72RHsFoCe uHiikIPcSTC39G/9joHgeUVKiwIF8N+X2q8Uc= Received: by 10.90.16.35 with SMTP id 35mr3536080agp.54.1257991928909; Wed, 11 Nov 2009 18:12:08 -0800 (PST) Received: from mecuria.xbsd.name ([124.207.115.45]) by mx.google.com with ESMTPS id 9sm1088038yxf.23.2009.11.11.18.12.05 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 11 Nov 2009 18:12:08 -0800 (PST) X-OpenSMTPD-Loop: freebsd-fs@freebsd.org Received: from mecuria.xbsd.name (localhost.xbsd.name [IPv6:::1]) by mecuria.xbsd.name (OpenSMTPD) with ESMTP id 1257991917.cR3wD5HTzji8PiTK; Thu, 12 Nov 2009 10:11:57 +0800 (CST) X-Envelope-To: freebsd-fs@freebsd.org To: freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (berkeley-unix) From: tamgya@gmail.com (Denise H. G.) Organization: Terra Firma Mail-Followup-To: freebsd-fs@freebsd.org Date: Thu, 12 Nov 2009 10:11:56 +0800 Message-ID: <87vdhglcer.fsf@mecuria.xbsd.name> Subject: Is 'zfs prefetch' dangerous?CC: X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Nov 2009 02:44:48 -0000 Hi list. I've been wondering if I should turn on prefetch for ZFS, but after a search in google, I found there seem to be some issues on ZFS prefetch. Since I have got 4GB RAM, maybe it is a good idea to turn it on. My machine is mainly for home use and has no important data on it. If I turn it on, will my machine run smooth? Thanks, regards. -- tamgya |aT| GmAiL |DoT| cOm