On Jan 25, 2020, at 6:19 AM, Peter Zijlstra [off-list ref] wrote:

On Fri, Jan 24, 2020 at 01:19:05PM -0500, Alex Kogan wrote:

quoted

Is there a lightweight way to identify such a “prioritized” thread?

No; people might for instance care about tail latencies between their
identically spec'ed worker tasks.

I would argue that those users need to tune/reduce the intra-node handoff
threshold for their needs. Or disable CNA altogether.

In general, Peter, seems like you are not on board with the way Longman
suggested to handle prioritized threads. Am I right?

Thanks,
— Alex


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