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    SubjectRe: Power consumption HZ100, HZ250, HZ1000: new numbers
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    On Tue, 2005-08-02 at 11:13 +0200, Tomasz Torcz wrote:
    > On Mon, Aug 01, 2005 at 08:19:42AM +0200, Stefan Seyfried wrote:
    > > Lee Revell wrote:
    > > > On Mon, 2005-08-01 at 00:47 +0200, Pavel Machek wrote:
    > > >> I'm pretty sure at least one distro will go with HZ<300 real soon now
    > > >> ;-).
    > > >>
    > > >
    > > > Any idea what their official recommendation for people running apps that
    > > > require the 1ms sleep resolution is? Something along the lines of "Get
    > > > bent"?
    > >
    > > MPlayer is using /dev/rtc and was running smooth for me since the good
    > > old 2.4 days.
    >
    > VMware also uses /dev/rtc. So is NTP, which is needed when time drifts.
    > But they can't use /dev/rtc simultanously, as it's single-open device.
    > So running ntpd denies vmware and mplayer access to RTC. Bummer.
    >

    You could work around this to some extent by using the ALSA timer API
    with the RTC timer. I think this allows multiple open by setting the
    RTC to tick based on the lowest common denominator. It won't help
    vmware and NTP though.

    Lee

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