On Mon, 8 Feb 2016 21:31:08 +0100, Jeremy Jongepier wrote: >On 02/08/2016 08:11 PM, Ralf Mardorf wrote: >> I forgot to mention, the lowlatency is a vanilla kernel with a >> special configuration, but without a realtime related patch. > >Afaik the Ubuntu low-latency kernel doesn't really have a special >config, just CONFIG_PREEMPT and CONFIG_HZ_1000.
A comparison between a standard Arch and an Ubuntu lowlatency kernel of a few other things that come to mind on the fly: [rocketmouse@archlinux ~]$ uname -r 4.4.1-2-ARCH [rocketmouse@archlinux ~]$ zgrep THREADING_DEFAULT /proc/config.gz [rocketmouse@archlinux ~]$ grep THREADING_DEFAULT /mnt/moonstudio/boot/config-4.2.0-27-lowlatency CONFIG_IRQ_FORCED_THREADING_DEFAULT=y [rocketmouse@archlinux ~]$ zgrep Q_DEFAULT_GOV /proc/config.gz # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set [rocketmouse@archlinux ~]$ grep -i Q_DEFAULT_GOV /mnt/moonstudio/boot/config-4.2.0-27-lowlatency CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set [rocketmouse@archlinux ~]$ zgrep NO_HZ /proc/config.gz CONFIG_NO_HZ_COMMON=y CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ_FULL is not set # CONFIG_NO_HZ is not set [rocketmouse@archlinux ~]$ grep NO_HZ /mnt/moonstudio/boot/config-4.2.0-27-lowlatency CONFIG_NO_HZ_COMMON=y CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ_FULL is not set CONFIG_NO_HZ=y _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
