Date: Sat, 28 Apr 2001 09:24:40 -0500 From: Erick Kinnee <erick@kinnee.net> To: Bruce Evans <bde@zeta.org.au> Cc: Cejka Rudolf <cejkar@dcse.fee.vutbr.cz>, freebsd-current@FreeBSD.ORG Subject: Re: Experiences with new dir allocation on FFS? Message-ID: <20010428092440.A6828@www.kinnee.net> In-Reply-To: <Pine.BSF.4.21.0104281418120.7618-100000@besplex.bde.org>; from bde@zeta.org.au on Sat, Apr 28, 2001 at 02:34:12PM %2B1000 References: <20010427192546.A50092@dcse.fee.vutbr.cz> <Pine.BSF.4.21.0104281418120.7618-100000@besplex.bde.org>
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On Sat, Apr 28, 2001 at 02:34:12PM +1000, Bruce Evans wrote: > On Fri, 27 Apr 2001, Cejka Rudolf wrote: > > > Right now, I have upgraded my -current machine from > > February 13 to April 26. > > > > I were pleased with change to dir allocation in FFS, > > but here are my unpleasant test results (UDMA33, partition > > is 3 GB where 1 GB is free, soft-updates are enabled): > > ... > > rm -r is much faster, but tar xvfz is much slower. > > This is probably caused by write caching now being off by default > in the ata driver, possibly amplified by not using soft updates. > Without the new dir allocation, -current would be even slower :(. OK, I;ve looked and looked and can't seem to figure out how to set hw.ata.wc to enabled. I've put and a few other things in /etc/sysctl.conf, the others get set, hw.ata.wc doesn't. You can't change it by hand either as sysctl tells you it's readonly. Grepping in /sys/i386/conf has turned up nothing and neither has grepping /boot. No flames please, I feel I have tried to find the answer. :) Erick -- "Our vision is to speed up time, eventually eliminating it." -- Alex Schure To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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