Blog Matt McSpirit menjelaskan Core Parking:
Di post tersebut, Matt memperlihatkan feature Windows 7 dan Windows Server 2008 berjalan di sebuah server dengan empat (ya, benar - empat) prosesor quad core
“Windows Server 2008 R2 has the ability to adjust the ACPI “P-states” of processors and subsequently adjust server power consumption. ACPI “P-states” are the processor performance states within the ACPI specification. Depending on the processor architecture, Windows Server 2008 R2 can adjust the “P-states” of individual processors and provide very fine control over power consumption.”
Artikel di Betanews ini menjelaskan bagaimana Anda bisa mengatur core parking dengan perintah “powercfg”.
“Using powercfg, you create a power scheme (which is separate from a group policy object), and you give that scheme a name like ordinary_scheme. You may have already been doing this before for regular system power management. But now, the scheme adds a sub_processor parameter with which you designate the integer percentage of cores in your system (remember, a single R2 instance can now support 256 logical cores simultaneously) that can be regulated through PPM. If it just so happens that all the cores being powered down reside on the same die, PPM can take the next logical step and power down the whole chip, if necessary. In this type of regulation — again, if your CPUs support it — the various range of supported frequencies, known as ACPI p-states, can be tapped into to reduce the frequencies of underutilized cores at will, and power them back up again when the load gets heavier.”
Powercfg juga mempunyai banyak kegunaan lain, seperti membuat Power Efficiency Diagnostics Report.
sumber : http://www.chip.co.id/green/?p=407
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