Date: Tue, 13 Mar 2001 07:41:14 -0800 From: Cy Schubert - ITSD Open Systems Group <Cy.Schubert@uumail.gov.bc.ca> To: Pete French <pfrench@firstcallgroup.co.uk> Cc: bright@wintelcom.net, Helge.Oldach@de.origin-it.com, mobile@FreeBSD.ORG, oberman@es.net, sos@freebsd.dk, stable@FreeBSD.ORG Subject: Re: Disk I/O problem in 4.3-BETA Message-ID: <200103131541.f2DFfte07457@cwsys.cwsent.com> In-Reply-To: Your message of "Tue, 13 Mar 2001 11:51:11 GMT." <E14cnKZ-0005ZI-00@dilbert.fcg.co.uk>
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In message <E14cnKZ-0005ZI-00@dilbert.fcg.co.uk>, Pete French writes: > All very interesting, but a small point has been forgotten > hasnt it ? The way I read this thread is that until recentlly > write-caching was enabled by default and has now been disabled (hence > the original obseravtion of disc performance dropping). > > I havent noticed that FreeBSD has a bad reputation for loss of data > in the event of am power outage, and my own experience backs this up. > As so many people appear to have been running it this way by default until > now you might have though that if it were a serious problem in reality then > people would have noticed by now ? Operating systems which write their metadata asynchronously are worse for data loss during power failure than FreeBSD. My experiences with FreeBSD in this area have been excellent: Much better data integrity during power failure than Linux and the commercial UNIX systems. Any loss of data that I've experienced on a FreeBSD system has either been a hardware problem or I have been the cause of the data loss. 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, ISTA Province of BC To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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