Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 10 Apr 2024 14:24:14 +0200 | Subject | Re: [RFC PATCH 0/2] Disable RT-throttling for idle-inject threads | From | Daniel Bristot de Oliveira <> |
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On 4/10/24 13:46, Peter Zijlstra wrote: > Also, we'll be replacing the throttling code with DL servers 'soonish' > at which point all this will stop working anyway, since DL will preempt > anything FIFO, including your idle injection crud.
+1
also, given that the code spins with preempt disabled, with dl server it could even become a non-rt thread...
FIFO RUNNING DL_SERVER activates their loop disables preemption() run() enable preemption() DL_SERVE throttled FIFO BACK
So, there will be no need for this busy loop to be RT.
Anyways, it breaks RT and DL if it keeps running for too long... It can also cause complaints like RCU stalls and loong wait on locks, e.g., on kworkers...
-- Daniel
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