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
