From owner-freebsd-stable Sun Sep 30 9:20:54 2001 Delivered-To: freebsd-stable@freebsd.org Received: from mclean.mail.mindspring.net (mclean.mail.mindspring.net [207.69.200.57]) by hub.freebsd.org (Postfix) with ESMTP id 49A7837B409 for ; Sun, 30 Sep 2001 09:20:46 -0700 (PDT) Received: from netcom1.netcom.com (user-2initp0.dialup.mindspring.com [165.121.119.32]) by mclean.mail.mindspring.net (8.9.3/8.8.5) with ESMTP id MAA16402; Sun, 30 Sep 2001 12:20:32 -0400 (EDT) Received: by netcom1.netcom.com (Postfix, from userid 1000) id 10A5B133C1; Sun, 30 Sep 2001 09:20:30 -0700 (PDT) From: Mike Harding To: Cy.Schubert@uumail.gov.bc.ca Cc: admin@rshb.com.ru, stable@FreeBSD.ORG In-reply-to: <200109301550.f8UFoEG02214@cwsys.cwsent.com> (message from Cy Schubert - ITSD Open Systems Group on Sun, 30 Sep 2001 08:49:47 -0700) Subject: Re: dirpref gives massive performance boost References: <200109301550.f8UFoEG02214@cwsys.cwsent.com> Message-Id: <20010930162030.10A5B133C1@netcom1.netcom.com> Date: Sun, 30 Sep 2001 09:20:30 -0700 (PDT) Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG So it sounds like there would be some benefit in tar'ing and untarring /usr/local, /usr/ports, /usr/src, etc. which will be less disruptive... Thanks! - Mike H. X-Authentication-Warning: cwsys.cwsent.com: smtpd set sender to using -f Reply-To: Cy Schubert - ITSD Open Systems Group From: Cy Schubert - ITSD Open Systems Group X-Sender: schubert Cc: admin@rshb.com.ru, stable@FreeBSD.ORG Content-Type: text/plain; charset=us-ascii Date: Sun, 30 Sep 2001 08:49:47 -0700 Sender: cy@uumail.gov.bc.ca X-SpamBouncer: 1.4 (8/24/01) X-SBClass: OK In message <20010930152404.581A8133C1@netcom1.netcom.com>, Mike Harding writes: > > Um - what about my question? Is the newfs necessary? Repartitioning, > backup, and restore also require a backup medium, etc. The more of your filesystem that has had its files allocated using the new dirpref, the greater the benefit. There was a comment made earlier in another thread on another list (see archives) that the new dirpref has the risk of greater fragmentation. There were no responses to the comment. I'm not sure whether this is just a concern someone had or whether the risk is real. The fact that there were no replies to that comment seems to indicate we just don't know yet. In some OpenBSD mailing list archives (search Google) there were comments about dirpref + softupdates being 60x faster than UFS without the two features. Regards, Phone: (250)387-8437 Cy Schubert Fax: (250)387-5766 Team Leader, Sun/Alpha Team Internet: Cy.Schubert@osg.gov.bc.ca Open Systems Group, ITSD Ministry of Management Services Province of BC To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message