Date: Mon, 01 Oct 2001 01:18:48 +0200 From: Dennis Berger <Dennis.Berger@nipsi.de> To: Mike Harding <mvh@ix.netcom.com> Cc: stable@freebsd.org Subject: Re: dirpref gives massive performance boost Message-ID: <3BB7A858.E3531219@nipsi.de> References: <200109301550.f8UFoEG02214@cwsys.cwsent.com> <20010930162030.10A5B133C1@netcom1.netcom.com>
next in thread | previous in thread | raw e-mail | index | archive | help
I tested FreeBSD-4.4 stable checked out today with a new created filesystem and a old existing one. The results are on the old filesystem with just tar and untaring ports, I can report afaik no speed up. On the new created filesystem the results are very impressive about 6 to 10 times faster. Mike Harding wrote: > 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 <cy@cwsys> using -f > Reply-To: Cy Schubert - ITSD Open Systems Group <Cy.Schubert@uumail.gov.bc.ca> > From: Cy Schubert - ITSD Open Systems Group <Cy.Schubert@uumail.gov.bc.ca> > 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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3BB7A858.E3531219>