On Fri, May 27, 2016 12:45 pm, Ralf Mardorf wrote: > if you're using a vanilla kernel, with boot option threadirqs > proprietary drivers could be used. In the past the kernel needed to be compiled with the CONFIG_PREEMPT flag for threadirqs to be available. I do not know if that is still true. On Fedora at least the standard kernel does not use CONFIG_PREEMPT (standard low latency) setting, it still uses CONFIG_PREEMPT_VOLUNTARY which is less good for low latency use. CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set Look at the kernel config in use, in order from worst to best the PREEMPT options are: CONFIG_PREEMPT_NONE <- don't use this one CONFIG_PREEMPT_VOLUNTARY <-- not good for low latency CONFIG_PREEMPT <- could be good for most use, test for yourself CONFIG_PREEMPT-RT <- lowest latency, requires out of tree RT patches -- Chris Caudle _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
