CPU scaling is broken in "recent" -rt; particularly on older CPU's (without the intel pstate stuff). I've also built -rt with the performance governer on as default, and some code in the kernel dis-allows any changing of CPU frequency. There's a thread over on -rt users, but it wasn't resolved yet: hence building with performance. Apart from minor lower battery life, and some extra heat / fan-noise, there's no dis-advantage. http://www.spinics.net/lists/linux-rt-users/msg12170.html HTH, -Harry On Fri, Jan 23, 2015 at 5:32 PM, Hermann Meyer <brummer-@xxxxxx> wrote: > > Am 23.01.2015 um 18:15 schrieb Ralf Mardorf: >> >> On Fri, 23 Jan 2015 12:45:39 +0100, Raffaele Morelli wrote: >>> >>> I recently compiled longterm 3.14.29 with realtime patch >>> https://www.kernel.org/pub/linux/kernel/projects/rt/3.14/ >>> works like a charm >> >> Assumed you don't need CPU frequency scaling "performance", can you >> switch to ondemand? >> >> _______________________________________________ > > > According to Raffaeles .config file, CPU frequency scaling is completely > disabled. > One of the difference to mine config, were I've set frequency scaling to > performance on default. > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user -- http://www.openavproductions.com _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
