# [OmniOS-discuss] Creating KVMs

Eric Sproul esproul at omniti.com
Thu Oct 4 12:34:16 EDT 2012

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    On Tue, Oct 2, 2012 at 5:23 PM, Bryan Horstmann-Allen
    <bdha at mirrorshades.net> wrote:
    > | You'll probably also want "set hires_tick=1" if you're not doing that already.
    >
    > Do you have a reference for that?

    Theo talked about it on IRC a while back:
    http://echelog.com/logs/browse/illumos/1332712800 (search for "hires")

    The gist is that it affects the minimum sleep time available.  If a
    program wants to "sleep 1ms" the least it can get with the default
    tick rate is 10ms.  That leads to a non-trivial amount of busywait or
    sleep time and less work getting done, especially for highly
    concurrent apps like Reconnoiter and ATS.

    Eric

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