Date: Tue, 16 Aug 2016 14:53:14 +0200 From: "Martin S. Weber" <Ephaeton@gmx.net> To: Arthur Chance <freebsd@qeng-ho.org> Cc: Matthew Seaman <matthew@FreeBSD.org>, freebsd-questions@freebsd.org Subject: Re: Followup: Losing time like crazy (1s short per 10s) Message-ID: <20160816125314.GE1241@hephaistos.local> In-Reply-To: <1bd2abf2-0cf6-cb0f-c8ec-c9c73d683ed8@qeng-ho.org> References: <20160816112002.GA3083@hephaistos.local> <20160816112714.GA1241@hephaistos.local> <d663a118-6ca3-fc1d-abe8-0da66b232fdf@FreeBSD.org> <20160816113933.GB1241@hephaistos.local> <20160816120454.GD1241@hephaistos.local> <1bd2abf2-0cf6-cb0f-c8ec-c9c73d683ed8@qeng-ho.org>
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On 2016-08-16 13:42:30, Arthur Chance wrote: >> (...) > For comparison, the same processor under 10.2 (really must find time to > upgrade) > > CPU: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (3997.77-MHz K8-class CPU) > > Timecounter "TSC-low" frequency 1998885348 Hz quality 1000 > > The only thing I can think of is that I don't have turbo mode enabled: > > dev.cpu.0.freq_levels: 4001/88000 4000/88000 3800/81704 etc... > dev.cpu.0.freq: 4000 > > What does "sysctl dev.cpu.0.freq" show on your machine? Varies, I'm not punishing the box atm, so it might be 3300, 1300, 1000, ... freq_levels is (under a -p4 kernel) dev.cpu.0.freq_levels: 4001/88000 4000/88000 3800/81704 3500/72258 3300/66530 3100/60999 2900/55687 2600/48456 2400/43627 2200/39003 1900/32072 1700/27930 1500/23963 1300/20178 1000/15137 800/11779 for a p7 freq_levels / freq I'd need to reinstall a known (for me) bad upgrade again, and reboot, brr Waiting for further suggestions of data to collect and will do all in one go, when I'm done with work. Thanks & Regards, -Martin
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