how to bind a task to "dedicated" core? (using cgroups/cpusets?)
I launch my application, and I bind one of it threads using sched_setaffinity to the certain core. This thread is latency-critical so I want to move everything else from this core.
I've already moved interrupts from this core.
Now I want to be sure that no other tasks are using this core. As I inderstand I should use cgroups (cpusets?). How can I ensure that no other processes (and no other threads of my application) are using this core?
Responses
Red Hat
Guru
7252 points
The isolcpus kernel boot parameter can do this:
Red Hat
Guru
7252 points
My understanding is that isolcpus removes a particular core from the task scheduler, so unless something manually requests a process be placed on that core (sched_setaffinity() and friends, handling a hard IRQ) then nothing else will be run on there.
However this is not my speciality area so others may have more insight than I do.
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