Date: Sun, 15 Feb 2015 01:27:09 -0800 From: Rick Thomas <rbthomas@pobox.com> To: Adam Vande More <amvandemore@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: How to adjust clock frequency in FreeBSD 10.1 ? Message-ID: <AAD72646-255C-4F7F-8BD1-2783EA619F6B@pobox.com> In-Reply-To: <CA%2BtpaK1rJszT2-JMUqBp6hb3nMDVQchn8FBR7icQaSNi1gad4w@mail.gmail.com> References: <AE5A370C-A7F7-41D2-900D-B26521A2D705@pobox.com> <CA%2BtpaK3bn-UPrqTU9cME2V9Ls=auf1n0rdr%2BuHA1b7pcspmiPw@mail.gmail.com> <BF8DFE66-E19D-45DA-A0C3-EB08D7E9DFF9@pobox.com> <CA%2BtpaK1rJszT2-JMUqBp6hb3nMDVQchn8FBR7icQaSNi1gad4w@mail.gmail.com>
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On Feb 14, 2015, at 4:50 AM, Adam Vande More <amvandemore@gmail.com> = wrote: > Is there some other way to set the frequency? >>=20 >=20 > Sure, but I thought keeping accurate time was the goal? Indeed. And the machine is capable of doing that except for the problem = that the actual frequency is different from the frequency that the = kernel is assuming. Based on my experience with this machine using Linux, the actual = frequency is quite stable =97 certainly within the capability of ntp to = stabilize and maintain offsets of 10ms or less for extended periods. = But for some reason the actual frequency is about a percent or two off = from the frequency that the kernel wants to use. Under Linux, I can = tune that with adjtimex(8) setting TICK to an appropriate value. My = quest is to find out how to accomplish the same under FreeBSD. Your answer implies that there is a way to tune the frequency, but I = haven=92t found it yet. Any help will be appreciated. Thanks! Rick=
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