Date: Fri, 21 Sep 2001 10:26:03 -0700 (PDT) From: Matt Dillon <dillon@earth.backplane.com> To: j mckitrick <jcm@freebsd-uk.eu.org> Cc: Mike Meyer <mwm@mired.org>, "Daniel O'Connor" <doconnor@gsoft.com.au>, Kevin Oberman <oberman@es.net>, stable@freebsd.org Subject: Re: RE: hw.ata.wc && hw.ata.tags && softupdates short question Message-ID: <200109211726.f8LHQ3h70907@earth.backplane.com> References: <XFMail.20010921121832.doconnor@gsoft.com.au> <200109210329.f8L3TGR30860@ptavv.es.net> <20010920211704.C7820@gateway.bogus> <15274.48864.994229.51687@guru.mired.org> <200109210549.f8L5n6r67664@earth.backplane.com> <20010921122805.A78591@dogma.freebsd-uk.eu.org>
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:So, to boil everything down, I have 1 question: : :On a workstation LAPTOP (IDE, low load, etc), does it make more sense to use :softupdates, write caching, or both? : :jm Write caching is turned on by default in 4.4, so all you need to mess with is softupdates. In a laptop environment, softupdates will not realistically be any more or less reliable with write caching turned on or off. The issue with softupdates, regardless of whether write caching is turned on or off, is that softupdates can delay I/O by 30+ seconds. If your laptop crashes you can potentially lose more work with softupdates turned on verses if it is turned off. For myself, I turn on softupdates on my laptop. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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