Date: Sun, 11 Feb 2001 14:11:12 -0800 From: "Kevin Oberman" <oberman@es.net> To: mobile@freebsd.org Subject: Any ideas on keeping the disk spun down on laptop Message-ID: <200102112211.f1BMBCL23187@ptavv.es.net>
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One annoyance I have with FreeBSD on my laptop is that the disk will spin up on a frequent basis, even when the system seems completely idle. I suspect that this is the result of update(4). The man page claims that I can extend the period between updates with sysctl kern.update. But, when I try a "sysctl kern.update", I get a response of: sysctl: unknown oid 'kern.update' 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. FWIW, I am running with soft-updates on all file systems. This could well impact things. Thanks, R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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