--- El mié 14-ene-09, Andika Triwidada <[email protected]> escribió:
> De:: Andika Triwidada <[email protected]> > Asunto: Re: Shutting down one core when not needed > A: [email protected] > Fecha: miércoles, 14 enero, 2009, 7:30 am > On Wed, Jan 14, 2009 at 5:04 PM, Erik Andrén > <[email protected]> wrote: > > 2009/1/13 Arjan van de Ven > <[email protected]>: > >> Gioele Barabucci wrote: > >>> Hello, > >>> > >>> is there a way to shutdown one of the two > cores found in Core 2 Duo processors when, even if multiple > process are running, the load is low enough to be handled by > one CPU? > >>> > >>> The scheduler tries quite hard to balance > processes between the two cores, even when that balancing is > not really needed (listening to music in the background for > example, a 2% CPU task). This shows up as a lot of > "Kernel IPI: Rescheduling interrupts" messages in > powertop. > >>> > >> > >> unfortunately there is no efficient way to do > this; what is there actually ends up burning you more > power........ > >> > >> we need to fix the scheduler instead for sure. > >> > > > > Is there a kernel bug entry open for this issue? > > Yup > http://bugzilla.kernel.org/show_bug.cgi?id=5471 Mmmm... I don't think that's the bug. It talks about one core being unable to sleep when the other core is offline. We need a bug report about the process scheduler. Is there any? -William __________________________________________________ Correo Yahoo! Espacio para todos tus mensajes, antivirus y antispam ¡gratis! Regístrate ya - http://correo.yahoo.com.mx/ _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
