Date: 07 Jun 2001 15:49:20 -0400 From: Vivek Khera <khera@kcilink.com> To: questions@freebsd.org Subject: Re: how to improve a bad timekeeper Message-ID: <x7bso02hq7.fsf@onceler.kciLink.com> In-Reply-To: <BA5D0CE1CBB2D411B6AA00A0CC3F02390AFA0C@ldcmsx01.lc.ca.gov> References: <BA5D0CE1CBB2D411B6AA00A0CC3F02390AFA0C@ldcmsx01.lc.ca.gov>
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>>>>> "DT" == Drew Tomlinson <drewt@writeme.com> writes: DT> Another thing you can try is changing your clock source. Add the DT> following lines to your kernel config file and recompile: DT> options CLK_USE_I8254_CALIBRATION DT> options CLK_USE_TSC_CALIBRATION DT> I don't understand what these do exactly and they're not documented in LINT DT> as of the 4.2-RELEASE. But I did this and it worked for me. Thanks! I finally tried this out, and it seems to help tremendously. The ticker is now only veering off a tenth of a second or so every few hours, and ntpd can keep up with that pretty easily. Does anyone have more info on what these really do? Also, I did a boot -v and the calibration never ended until I hit enter. Is that a feature of the -v or is that a feature of the calibration? I'd hate to have to be present every time I boot to hit a key... -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Vivek Khera, Ph.D. Khera Communications, Inc. Internet: khera@kciLink.com Rockville, MD +1-240-453-8497 AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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