Date: Mon, 12 Feb 2001 21:13:51 +0000 From: Tony Finch <dot@dotat.at> To: Kevin Oberman <oberman@es.net> Cc: mobile@freebsd.org Subject: Re: Any ideas on keeping the disk spun down on laptop Message-ID: <20010212211351.F35416@hand.dotat.at> In-Reply-To: <200102112211.f1BMBCL23187@ptavv.es.net> References: <200102112211.f1BMBCL23187@ptavv.es.net>
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Kevin Oberman <oberman@es.net> wrote: > >Has anyone looked into making update(4) not do any disk IO when there >have been no changes to metadata? And, is there a way to extend the >update period? Or am I completely off base in my belief that update(4) >is the source of the continuing disk accesses. There is a simple patch to extend the time between syncer runs: see PR#21859. I've been running with this for months now and it works nicely. In /etc/sysctl.conf I have kern.syncdelay=250 kern.filedelay=240 kern.dirdelay=230 kern.metadelay=220 and in my kernel configuration file I have options SYNCER_MAXDELAY=1024 # allow up to 17 minutes between syncs Tony. -- f.a.n.finch fanf@covalent.net dot@dotat.at FAEROES SOUTHEAST ICELAND: WEST 5 OR 6 BACKING SOUTHWEST 6 TO GALE 8. RAIN. GOOD BECOMING MODERATE. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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