Date: Thu, 12 Apr 2012 21:13:30 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Florian Unglaub <ueber@roladder.net> Cc: freebsd-questions@freebsd.org Subject: Re: Intel turbo mode support Message-ID: <alpine.BSF.2.00.1204122103360.1978@wonkity.com> In-Reply-To: <4F85FF2E.3000309@roladder.net> References: <4F85FF2E.3000309@roladder.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 12 Apr 2012, Florian Unglaub wrote: > I've stumbled upon http://goo.gl/Aq6Vd in the freebsd-current mailling list > and started investigating if turbo mode is working on my i7 860 here. The CPU > stock frequency is 2.8GHZ which is the maximum that dev.cpu.0.freq_levels > reports (powerd is enabled). According to the link above, freq_levels should > show a maximum frequency of 2801 if turbo mode is working. > > The patch above was MFC'ed quite a while ago. I updated to 9-stable yesterday > and it looks like the turbo is not working. dev.cpu.0.freq is at max. 2.8GHz, > even if I am using some CPU stress testing utilities (like burnP6). Works here on an i5, amd64: dev.cpu.0.freq_levels: 5801/300000 5800/300000 I found this by accident, noticing only that a buildworld suddenly was a lot faster when powerd was running. powerd_enable="YES" powerd_flags="-a hadp -n hadp" performance_cpu_freq="HIGH" During a buildworld, dev.cpu.0.freq goes to 5801.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?alpine.BSF.2.00.1204122103360.1978>