From owner-freebsd-questions@FreeBSD.ORG Fri Nov 21 07:54:32 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CBD101065679 for ; Fri, 21 Nov 2008 07:54:32 +0000 (UTC) (envelope-from valentin.bud@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.228]) by mx1.freebsd.org (Postfix) with ESMTP id 9B51F8FC14 for ; Fri, 21 Nov 2008 07:54:32 +0000 (UTC) (envelope-from valentin.bud@gmail.com) Received: by rv-out-0506.google.com with SMTP id b25so800719rvf.43 for ; Thu, 20 Nov 2008 23:54:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=FZLqWOBBqKGDPg5ejJoRVCkK2YLhi6SxeeOBPAt5hfA=; b=XcFW24+EvFLHEazSJvff3jqz3idADSJ1iW7tiNrL3TA+Eenj6ME2Z0TckUSRT9BbKn wvwnMqCEfDFlO6Wfzx7YrE6vn9sD/pYZvDHxaaEGVOJ71lBGByU5BXGnEi1M+nvW+TBQ QRXuZ9N49+Qk02LIX6WQPxsrMlKp5A/bDU0pA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=TmHTgXrXM4cA0wyBdL8Zt7hqLgz5LrQ1rsjvo/vjliNBOOtf1FgZCM/6sjucv30OhR 9/O8xBG3+3bMBDFRbbUXMv0yInMr0HX6q6hfyP4dy/4i7GLctlvFY1lvm5kKjji3nnnG DwoTUsn9l5oJMaHslFB47fDv99/4O+GM4TUqk= Received: by 10.142.109.8 with SMTP id h8mr131026wfc.139.1227252392029; Thu, 20 Nov 2008 23:26:32 -0800 (PST) Received: by 10.142.180.17 with HTTP; Thu, 20 Nov 2008 23:26:31 -0800 (PST) Message-ID: <139b44430811202326j6eafb93fgde2a55c1564da68f@mail.gmail.com> Date: Fri, 21 Nov 2008 09:26:31 +0200 From: "Valentin Bud" To: "Wojciech Puchar" In-Reply-To: <20081120222909.K17356@wojtek.tensor.gdynia.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <02c801c94b40$4b6a2f10$e23e8d30$@za.net> <20081120204756.O16829@wojtek.tensor.gdynia.pl> <20081120222909.K17356@wojtek.tensor.gdynia.pl> Cc: questions@freebsd.org, Marcel Grandemange , Tsu-Fan Cheng Subject: Re: ZFS Recovery Tools X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Nov 2008 07:54:32 -0000 On Thu, Nov 20, 2008 at 11:31 PM, Wojciech Puchar wrote: > >> Hi, >> I was just reading stuff about ZFS, and wonder if it would be >> beneficial for me to use it. I store a lots of multimedia files in my >> HD, they usually have the size of > 1GB (e.g. 1.2, 1.7 or even >> bigger), and my system is running UFS. > > simply use UFS with big blocks (-b 65536 -f 8192) will be OK. > > BTW i have such change in param.h on every system i have: > > --- param.h~ 2008-10-09 20:49:54.000000000 +0200 > +++ param.h 2008-10-09 20:49:54.000000000 +0200 > @@ -121,7 +121,7 @@ > #define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size > */ > #endif > #ifndef MAXPHYS > -#define MAXPHYS (128 * 1024) /* max raw I/O transfer size > */ > +#define MAXPHYS (1024 * 1024) /* max raw I/O transfer > size */ What does MAXPHYS mean (yes max raw I/O transfer) and do? A little bit more specific if you may. thank you. > #endif > #ifndef MAXDUMPPGS > #define MAXDUMPPGS (DFLTPHYS/PAGE_SIZE) > > > no idea why it's not the default. > > > >> so can I buy a new HD, say 500GB, and format it ZFS style and use it >> along with other UFS? and will ZFS performs better than UFS in my > > there may be slight (if any) speedup with transfer speed, and HUGE (like > 10x) increase in CPU load. on slower CPUs transfers will be actually slower. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >