# [OmniOS-discuss] [discuss] illumos power management

Rafael Vanoni rafael.vanoni at pluribusnetworks.com
Wed Nov 13 19:50:04 UTC 2013

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    On Wed, Nov 13, 2013 at 11:24 AM, Garrett D'Amore <garrett at damore.org>wrote:

    > CPU power management is unlikely to do much for you.  Its better to rely
    > on C-states to save power on modern systems.  That said,
    >

    Strictly speaking, C-states are part of CPU power management. If you were
    referring to p-states, with the exception of apps that require very low
    latency, the race to idle policy implemented with the Power Aware
    Dispatcher project improved power efficiency without affecting performance
    across a variety of workloads.

    > there are some known bugs with deep C states and some drivers; we don't
    > ordinarily recommend setting it for servers.
    >

    Can you point me at these bugs ?

    Rafael
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