Date: Tue, 28 Feb 2006 21:47:59 -0300 From: Marcus Alves Grando <mnag@FreeBSD.org> To: Nate Lawson <nate@root.org> Cc: FreeBSD Stable <freebsd-stable@FreeBSD.org> Subject: Re: sysctl: dev.cpu.0.freq: Device busy (cpufreq p4tcc / RELENG_6) Message-ID: <4404EF3F.8050006@FreeBSD.org> In-Reply-To: <4404EC20.8030500@root.org> References: <4404E852.80908@FreeBSD.org> <4404EC20.8030500@root.org>
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Well, works. Thanks. It's possible to printf some message about this if kern.timecounter.hardware != ACPI-fast? Or add message in cpufreq(4)? Thanks Nate Lawson wrote: > Marcus Alves Grando wrote: >> I have problems in cpufreq in RELENG_6 (today). >> >> I try to set another frequency in my laptop and get this error: >> >> # sysctl dev.cpu.0.freq=250 >> dev.cpu.0.freq: 2000 >> sysctl: dev.cpu.0.freq: Device busy >> >> Timecounter "TSC" frequency 1995011972 Hz quality 800 >> Timecounters tick every 1.000 msec > > Try setting your timecounter to acpi or i8254 (not TSC): > > sysctl kern.timecounter.hardware="acpi" > > Without complicated recalibration code (which no one has written yet), > we can't base our system time off the TSC counter when cpufreq is > changing it. > -- Marcus Alves Grando marcus(at)corp.grupos.com.br | Grupos Internet S/A mnag(at)FreeBSD.org | FreeBSD.org
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