On Fri, 23 Jan 2015 19:12:32 +0100 Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx> wrote: > On Fri, 23 Jan 2015 18:32:07 +0100, Hermann Meyer wrote: > > 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. > > On Fri, 23 Jan 2015 17:36:05 +0000, Harry van Haaren wrote: > > 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 > > I just wanted to point out, that the CPU frequency scaling governor > might be useful for some computer usage. For audio production > "performance" is all we need. > > 3.14-rts suffer from this issue. > 3.10-rts seems to be ok. > > While Herman gets best results with 3.4 series, I still had good luck > with 3.8.13-rt14. I don't want to mount all my old installs I still > kept, but IIRC ... > [rocketmouse@archlinux ~]$ ls -hAl /mnt/debi386/boot/vm*3.8* > -rw-r--r-- 1 root root 2.8M Mar 21 > 2014 /mnt/debi386/boot/vmlinuz-3.8.13.14-rt30-pae-rocketmouse-1 > -rw-r--r-- 1 root root 2.8M Jan 27 > 2014 /mnt/debi386/boot/vmlinuz-3.8.13-rt14-pae-rocketmouse-2 > ... there were other builds ok too for 3.8 series, at least > 3.8.13.14-rt30 ;). But as mentioned before, I'm not using an aged Intel > machine. I'm using an aged AMD machine. Don't worry about the PAE, I > used them with 32-bit and 64-bit architecture. > > I don't remember if I used the aged onboard ATI, as I do now, or my > aged PCIe NVIDIA. Usually both aged graphics work ok with the FLOSS > drivers, when using Xfce4, Mate, JWM and openbox or similar, IIRC e.g. > Razor-Qt. They fail when using Cinnamon. I didn't really use Mate, but > Xfce4 a lot and nowadays I prefer JWM and openbox. > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user This is all very depressing! I may need to get a laptop in the near future (for the first time) specifically for audio, and I fear the possibility of a rather expensive mistake... or two :( -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
