Re: Intel TurboBoost in practice

2010-07-24 Thread Alexander Motin
Rui Paulo wrote: > On 24 Jul 2010, at 14:53, Alexander Motin wrote: >> Here is my test case: FreeBSD 9-CURRENT on Core i5 650 CPU, 3.2GHz + 1/2 >> TurboBoost steps (+133/+266MHz) with boxed cooler at the open air. I was >> measuring building time of the net/mpd5 from sources, using only one CPU >>

Re: Intel TurboBoost in practice

2010-07-24 Thread Alexander Motin
Norikatsu Shigemura wrote: > On Sat, 24 Jul 2010 16:53:10 +0300 > Alexander Motin wrote: >> PS: In this case benefit is small, but it is the least that can be >> achieved, depending on CPU model. Some models allow frequency to be >> risen by up to 6 steps (+798MHz). > > I tested on Core i7

Re: Intel TurboBoost in practice

2010-07-24 Thread Norikatsu Shigemura
Hi mav. On Sat, 24 Jul 2010 16:53:10 +0300 Alexander Motin wrote: > PS: In this case benefit is small, but it is the least that can be > achieved, depending on CPU model. Some models allow frequency to be > risen by up to 6 steps (+798MHz). I tested on Core i7 640UM (Arrandale 1.2GHz ->

Re: Intel TurboBoost in practice

2010-07-24 Thread Garrett Cooper
On Sat, Jul 24, 2010 at 9:18 AM, Rui Paulo wrote: > > On 24 Jul 2010, at 14:53, Alexander Motin wrote: > >> Hi. >> >> I've make small observations of Intel TurboBoost technology under >> FreeBSD. This technology allows Intel Core i5/i7 CPUs to rise frequency >> of some cores if other cores are idl

Re: Intel TurboBoost in practice

2010-07-24 Thread Rui Paulo
On 24 Jul 2010, at 14:53, Alexander Motin wrote: > Hi. > > I've make small observations of Intel TurboBoost technology under > FreeBSD. This technology allows Intel Core i5/i7 CPUs to rise frequency > of some cores if other cores are idle and power/thermal conditions > permit. CPU core counted a

Re: Intel TurboBoost in practice

2010-07-24 Thread Alan Cox
2010/7/24 Alexander Motin > Hi. > > I've make small observations of Intel TurboBoost technology under > FreeBSD. This technology allows Intel Core i5/i7 CPUs to rise frequency > of some cores if other cores are idle and power/thermal conditions > permit. CPU core counted as idle, if it has been p

Intel TurboBoost in practice

2010-07-24 Thread Alexander Motin
Hi. I've make small observations of Intel TurboBoost technology under FreeBSD. This technology allows Intel Core i5/i7 CPUs to rise frequency of some cores if other cores are idle and power/thermal conditions permit. CPU core counted as idle, if it has been put into C3 or deeper power state (may r