Date: Wed, 28 Feb 2007 20:23:21 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Nate Lawson <nate@root.org> Cc: arch@freebsd.org, current@freebsd.org Subject: Re: PATCH - update TSC freq when cpufreq changes it Message-ID: <70793.1172694201@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 28 Feb 2007 11:26:24 PST." <45E5D760.4030409@root.org>
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In message <45E5D760.4030409@root.org>, Nate Lawson writes: >Poul-Henning Kamp wrote: >It's a valid question, but mostly irrelevant. Not at all. It may be a lot cheaper for us to just use the value from the ACPI than to calibrate. Only in the increasingly rare case where TSC is used for timecounter AND the system isn't using NTP is the precise frequency really interesting. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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