Date: Wed, 24 Mar 2004 10:35:10 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: adp <dap99@i-55.com> Cc: questions@freebsd.org Subject: Re: FreeBSD hdparm? Message-ID: <20040324163510.GA3446@dan.emsphone.com> In-Reply-To: <013a01c411b6$68742a20$4b0a000a@yourqqh4336axf> References: <013a01c411b6$68742a20$4b0a000a@yourqqh4336axf>
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In the last episode (Mar 24), adp said: > I know that under Linux I can modify how the OS uses IDE drives using > hdparm. Is there an equivilent for FreeBSD? 'man tuning' seems to > indicate that there isn't anything and that I only need to worry > about whether I need to use softupdates. (It also mentions sysctl > values such as vfs.vmiodirenable, which seems enabled in 4.9 by > default.) I can see a need to tweak the parameters of how FreeBSD > uses my disks unless it already knows when to enable certain > features, for example 32-bit IO. The old wd disk driver used to have a flag to enable 32-bit transfers, but the ATA driver doesn't. I assume it always uses 32-bit. You can set the transfer speed with the "atacontrol" command if the driver didn't detect the right speed. -- Dan Nelson dnelson@allantgroup.com
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