3 ms·
I seem to recall an ubuntu music variant distro with the RT patch baked in but cannot for the life of me dig it up. This however may give you a nice point to d
by eliasmacpherson 4y ago
I seem to recall an ubuntu music variant distro with the RT patch baked in but cannot for the life of me dig it up.
This however may give you a nice point to dive in from:
https://ubuntu.com/engage/an-introduction-to-real-time-linux-part-i https://ubuntu.com/engage/an-introduction-to-real-time-linux...
for more advanced projects consider getting preempt-rt going in a yocto install.
- squeaky-clean 4y agoUbuntu Studio. They removed the rt kernel a while ago though. From some googling it seems they now use a "Low Latency Kernel" which users say has lower actually latency than the rt kernel at the expense of no hard guarantees on the latency. Apparently a malicious or poorly coded rt process could also completely lock the machine on rt kernel. https://help.ubuntu.com/community/UbuntuStudio/RealTimeKernel https://help.ubuntu.com/community/UbuntuStudio/RealTimeKerne...
- PaulDavisThe1st 4y ago> Apparently a malicious or poorly coded rt process could also completely lock the machine on rt kernel. This is false by default. The kernel reserves 5% (configurable) of CPU cycles for non-RT tasks, meaning that no RT task can lock the machine unless it also blocks all IRQs; this could be done by a non-RT task too, so it is not an RT-related hazard. See /proc/sys/kernel/sched_rt_period_us /proc/sys/kernel/sched_rt_runtime_us It is true that if you misconfigure these values, things can go wrong, but that's true of a lot of kernel parameters.
- deleted 4y ago[deleted]